corprof.idl

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

/**************************************************************************************
 **                                                                                  **
 ** Corprof.idl - CLR Profiling interfaces.                                          **
 **                                                                                  **
 **************************************************************************************/

/* -------------------------------------------------------------------------- *
 * Imported types
 * -------------------------------------------------------------------------- */

#if !DEFINITIONS_FROM_NON_IMPORTABLE_PLACES

cpp_quote("#if 0")


import "unknwn.idl";

typedef LONG32  mdToken;
typedef mdToken mdModule;
typedef mdToken mdTypeDef;
typedef mdToken mdMethodDef;
typedef mdToken mdFieldDef;
typedef ULONG CorElementType;

// Forward declaration of enum in CorHdr.h
enum    CorElementType;

// Forward declaration of structs in Cor.h

typedef struct
{
    DWORD       dwOSPlatformId;         // Operating system platform.
    DWORD       dwOSMajorVersion;       // OS Major version.
    DWORD       dwOSMinorVersion;       // OS Minor version.
} OSINFO;

typedef struct
{
    USHORT      usMajorVersion;         // Major Version.
    USHORT      usMinorVersion;         // Minor Version.
    USHORT      usBuildNumber;          // Build Number.
    USHORT      usRevisionNumber;       // Revision Number.
    LPWSTR      szLocale;               // Locale.
    ULONG       cbLocale;               // [IN/OUT] Size of the buffer in wide chars/Actual size.
    DWORD       *rProcessor;            // Processor ID array.
    ULONG       ulProcessor;            // [IN/OUT] Size of the Processor ID array/Actual # of entries filled in.
    OSINFO      *rOS;                   // OSINFO array.
    ULONG       ulOS;                   // [IN/OUT]Size of the OSINFO array/Actual # of entries filled in.
} ASSEMBLYMETADATA;

cpp_quote("#endif")

typedef const BYTE *LPCBYTE;
typedef BYTE *LPBYTE;

typedef BYTE COR_SIGNATURE;
typedef COR_SIGNATURE* PCOR_SIGNATURE;
typedef const COR_SIGNATURE* PCCOR_SIGNATURE;

#endif


cpp_quote("#ifndef _COR_IL_MAP")
cpp_quote("#define _COR_IL_MAP")

#ifdef INTERNAL_DOCS
// Note that this structure is also defined in CorDebug.idl - PROPAGATE CHANGES
// BOTH WAYS, or this'll become a really insidious bug some day.
#endif
typedef struct _COR_IL_MAP
{
    ULONG32 oldOffset;        // Old IL offset relative to beginning of function
    ULONG32 newOffset;        // New IL offset relative to beginning of function
    BOOL    fAccurate; //put here for compatibility with the Debugger structure.
} COR_IL_MAP;

cpp_quote("#endif //_COR_IL_MAP")

cpp_quote("#ifndef _COR_DEBUG_IL_TO_NATIVE_MAP_")
cpp_quote("#define _COR_DEBUG_IL_TO_NATIVE_MAP_")

/* ICorProfilerInfo:: GetILToNativeMapping returns an array of
 * COR_DEBUG_IL_TO_NATIVE_MAP structures.  In order to convey that certain
 * ranges of native instructions correspond to special regions of code (for
 * example, the prolog), an entry in the array may have it's ilOffset field set
 * to one of these values.
 */
typedef enum CorDebugIlToNativeMappingTypes
{
    NO_MAPPING = -1,
    PROLOG     = -2,
    EPILOG     = -3
} CorDebugIlToNativeMappingTypes;

typedef struct COR_DEBUG_IL_TO_NATIVE_MAP
{
    ULONG32 ilOffset;
    ULONG32 nativeStartOffset;
    ULONG32 nativeEndOffset;
} COR_DEBUG_IL_TO_NATIVE_MAP;

cpp_quote("#endif // _COR_DEBUG_IL_TO_NATIVE_MAP_")

cpp_quote("#ifndef _COR_FIELD_OFFSET_")
cpp_quote("#define _COR_FIELD_OFFSET_")

typedef struct _COR_FIELD_OFFSET
{
    mdFieldDef ridOfField;  // fieldDef token of the field
    ULONG      ulOffset;      // offset (from the ObjectID pointer) of the field
} COR_FIELD_OFFSET;

cpp_quote("#endif // _COR_FIELD_OFFSET_")


#ifndef DO_NO_IMPORTS
import "wtypes.idl";
import "unknwn.idl";
#endif

#define STDMETHODCALLTYPE

typedef UINT_PTR ProcessID;
typedef UINT_PTR AssemblyID;
typedef UINT_PTR AppDomainID;
typedef UINT_PTR ModuleID;
typedef UINT_PTR ClassID;
typedef UINT_PTR ThreadID;
typedef UINT_PTR ContextID;
typedef UINT_PTR FunctionID;
typedef UINT_PTR ObjectID;
typedef UINT_PTR GCHandleID;
typedef UINT_PTR COR_PRF_ELT_INFO;
typedef UINT_PTR ReJITID;

typedef union {FunctionID functionID; UINT_PTR clientID;} FunctionIDOrClientID;

/*
 * The FunctionIDMapper type definition is used by the
 * ICorProfilerInfo::SetFunctionIDMapper method to specify
 * a function that will be called to map FunctionIDs to alternative
 * values that will be passed to the function entry and function exit
 * callbacks supplied to the ICorProfilerInfo::SetEnterLeaveFunctionHooks
 * method. The mapper can be set only once and it is recommended to do so
 * in the Initialize callback.
 *
 * NOTE: There is a known bug in this API that must be worked around.
 * The return value of FunctionIDMapper cannot be NULL (unless the boolean
 * value in pbHookTheFunction is FALSE).  All other values are treated as
 * opaque data to be passed to the entry/exit callback functions.  The use
 * of a NULL return value will produce unpredictable results, including
 * possibly halting the process.
 *
 * NOTE: Profilers should be tolerant of cases where multiple threads of
 * a profiled app are calling the same method simultaneously.  In such
 * cases, the profiler may receive multiple FunctionIDMapper callbacks
 * for the same functionId.  The profiler should be certain to return
 * the same values from this callback when it is called multiple times
 * with the same functionId.
 *
 */
typedef UINT_PTR __stdcall FunctionIDMapper(
                FunctionID funcId,
                BOOL *pbHookFunction);

typedef UINT_PTR __stdcall FunctionIDMapper2(
                FunctionID funcId,
                void *clientData,
                BOOL *pbHookFunction);

/*
 * Enum for specifying how much data to pass back with a stack snapshot
 */
typedef enum _COR_PRF_SNAPSHOT_INFO
{
    COR_PRF_SNAPSHOT_DEFAULT            = 0x0,

    // Return a register context for each frame
    COR_PRF_SNAPSHOT_REGISTER_CONTEXT   = 0x1,

    // Use a quicker stack walk algorithm based on the EBP frame chain. This is available
    // on x86 only.
    COR_PRF_SNAPSHOT_X86_OPTIMIZED      = 0x2,
} COR_PRF_SNAPSHOT_INFO;

/*
 * Opaque handle that represents information about a given stack frame. It is only
 * valid during the callback to which it is passed.
 */
typedef UINT_PTR COR_PRF_FRAME_INFO;

/*
 * Describes a range of function arguments stored contiguously in left-to-right
 * order in memory.
 */
typedef struct _COR_PRF_FUNCTION_ARGUMENT_RANGE
{
    UINT_PTR startAddress;          // start address of the range
    ULONG length;                         // contiguous length of the range
} COR_PRF_FUNCTION_ARGUMENT_RANGE;

/*
 * Describes the locations in memory of a function's arguments, in
 * left-to-right order. Note that arguments stored in registers are
 * spilled to memory to build these structures.
 */
typedef struct _COR_PRF_FUNCTION_ARGUMENT_INFO
{
    ULONG numRanges;                // number of chunks of arguments
    ULONG totalArgumentSize;    // total size of arguments
    COR_PRF_FUNCTION_ARGUMENT_RANGE ranges[1];  // chunks
} COR_PRF_FUNCTION_ARGUMENT_INFO;

/*
 * Represents one contiguous chunk of native code
 */
typedef struct _COR_PRF_CODE_INFO
{
    UINT_PTR startAddress;
    SIZE_T size;
} COR_PRF_CODE_INFO;

/*
 * Enum for describing the type of static a field is.  These may be bit-wise
 * or'ed with each other if the field is multiple types.
 */
typedef enum
{
    COR_PRF_FIELD_NOT_A_STATIC = 0x0,
    COR_PRF_FIELD_APP_DOMAIN_STATIC = 0x1,
    COR_PRF_FIELD_THREAD_STATIC = 0x2,
    COR_PRF_FIELD_CONTEXT_STATIC = 0x4,
    COR_PRF_FIELD_RVA_STATIC = 0x8
} COR_PRF_STATIC_TYPE;

/*
 * Represents a function uniquely by combining the FunctionID
 * with a ReJITID.
 */
typedef struct _COR_PRF_FUNCTION
{
    FunctionID functionId;
    ReJITID    reJitId;
} COR_PRF_FUNCTION;


/*
 * Structure populated by profiler when declaring additional assembly references
 * that the CLR should consider when performing an assembly reference closure
 * walk.  See ICorProfilerCallback6::GetAssemblyReferences and
 * ICorProfilerAssemblyReferenceProvider::AddAssemblyReference
 */
typedef struct _COR_PRF_ASSEMBLY_REFERENCE_INFO
{
    void  *pbPublicKeyOrToken;          // Public key or token of the assembly.
    ULONG       cbPublicKeyOrToken;     // Count of bytes in the public key or token.
    LPCWSTR     szName;                 // Name of the assembly being referenced.
    ASSEMBLYMETADATA * pMetaData;       // Assembly MetaData, as defined in cor.h
    void  *pbHashValue;                 // Hash Blob.
    ULONG       cbHashValue;            // Count of bytes in the Hash Blob.
    DWORD       dwAssemblyRefFlags;     // Flags.
} COR_PRF_ASSEMBLY_REFERENCE_INFO;


/*
 * Represents a IL methods uniquely by combining the module ID and method token.
 */
typedef struct _COR_PRF_METHOD
{
    ModuleID    moduleId;
    mdMethodDef methodId;
} COR_PRF_METHOD;

/*
 * NOTE!!!
 *
 * The following applies to ALL FunctionEnter[2,3], FunctionLeave[2,3],
 * FunctionTailcall[2,3] hooks below:
 *
 * It is VERY IMPORTANT to note that these function implementations must be
 * __declspec(naked), since the EE is not saving any registers before calling
 * any of them.  YOU MUST SAVE ALL REGISTERS YOU USE, INCLUDING FPU REGISTERS
 * IF THE FPU STACK IS NOT EMPTY AND YOU INTEND TO USE IT.
 *
 * NOTE: The profiler should not block here, since the stack may not be in a
 *       GC-friendly state and so preemptive GC cannot be enabled.  If the
 *       profiler blocks here and a GC is attempted, the runtime will block
 *       until this callback returns.  Also, the profiler may NOT call into
 *       managed code or in any way cause a managed memory allocation.
 */

 /*
 * NOTE: DEPRECATED IN V2
 *
 * These functions are considered deprecated in V2 and higher.  They will
 * continue to work, but incur a performance penalty for usage.  For equivalent
 * functionality, use the FunctionEnter3/Leave3/Tailcall3 callbacks with
 * bits cleared for COR_PRF_ENABLE_FRAME_INFO, COR_PRF_ENABLE_FUNCTION_RETVAL
 * and COR_PRF_ENABLE_FUNCTION_ARGS.
 */
typedef void STDMETHODCALLTYPE FunctionEnter(
                FunctionID funcID);

typedef void STDMETHODCALLTYPE FunctionLeave(
                FunctionID funcID);

typedef void STDMETHODCALLTYPE FunctionTailcall(
                FunctionID funcID);

/*
 * NOTE: DEPRECATED IN V4
 *
 * These functions are considered deprecated in V4 and higher.  They will
 * continue to work, but incur a performance penalty for usage.  For equivalent
 * functionality, use the FunctionEnter3/Leave3/Tailcall3 callbacks.
 */

typedef void STDMETHODCALLTYPE FunctionEnter2(
                FunctionID funcId,
                UINT_PTR clientData,
                COR_PRF_FRAME_INFO func,
                COR_PRF_FUNCTION_ARGUMENT_INFO *argumentInfo);

typedef void STDMETHODCALLTYPE FunctionLeave2(
                FunctionID funcId,
                UINT_PTR clientData,
                COR_PRF_FRAME_INFO func,
                COR_PRF_FUNCTION_ARGUMENT_RANGE *retvalRange);

typedef void STDMETHODCALLTYPE FunctionTailcall2(
                FunctionID funcId,
                UINT_PTR clientData,
                COR_PRF_FRAME_INFO func);

/*
 * When you are not interested in inspecting arguments or return values, then
 * use these to be notified as functions are called and return.  Use
 * SetEnterLeaveFunctionHooks3 to register your implementations of these
 * functions.
 *
 * functionIDOrClientID: if the profiler returned a remapped value from
 * FunctionIDMapper[2], then this is that remapped value; else it is the
 * true FunctionID of the function.
 */

typedef void STDMETHODCALLTYPE FunctionEnter3(
                FunctionIDOrClientID functionIDOrClientID);

typedef void STDMETHODCALLTYPE FunctionLeave3(
                FunctionIDOrClientID functionIDOrClientID);

typedef void STDMETHODCALLTYPE FunctionTailcall3(
                FunctionIDOrClientID functionIDOrClientID);

/*
 * When you are interested in inspecting arguments and return values, then
 * use these to be notified as functions are called and return.  Use
 * SetEnterLeaveFunctionHooks3WithInfo to register your implementations of these
 * functions.
 *
 * functionIDOrClientID: if the profiler returned a remapped value from
 * FunctionIDMapper[2], then this is that remapped value; else it is the
 * true FunctionID of the function.
 *
 * eltInfo is an opaque handle that represents information about a given stack frame.
 * It is only valid during the callback to which it is passed.
 */

typedef void STDMETHODCALLTYPE FunctionEnter3WithInfo(
                FunctionIDOrClientID functionIDOrClientID,
                COR_PRF_ELT_INFO eltInfo);

typedef void STDMETHODCALLTYPE FunctionLeave3WithInfo(
                FunctionIDOrClientID functionIDOrClientID,
                COR_PRF_ELT_INFO eltInfo);

typedef void STDMETHODCALLTYPE FunctionTailcall3WithInfo(
                FunctionIDOrClientID functionIDOrClientID,
                COR_PRF_ELT_INFO eltInfo);

/*
 * Stack snapshot callback definition.
 *
 * This callback is called once per managed frame or run of unmanaged frames.
 *
 * funcID is the FunctionID of the managed function. If funcID == 0, the callback is
 * for a run of unmanaged frames. The profiler may either ignore the frame, or use
 * the register context to perform its own unmanaged stackwalk.
 *
 * ip is the native IP in the frame
 *
 * frameInfo is the COR_PRF_FRAME_INFO for this frame. It is only valid for
 * use during this callback.
 *
 * context is a Win32 CONTEXT struct for the current platform (size given in
 * contextSize). It will only be valid if the COR_PRF_SNAPSHOT_CONTEXT flag
 * was passed to DoStackSnapshot.
 *
 * clientData is a void* passed straight through from DoStackSnapshot
 *
 * NOTE: One must limit the complexity of work done in StackSnapshotCallback.
 * For example, particularly when using DoStackSnapshot in an asynchronous manner,
 * the target thread may be holding locks. Executing code within StackSnapshotCallback
 * that requires the same locks could lead to deadlock.
 */
typedef HRESULT __stdcall StackSnapshotCallback(
                FunctionID funcId,
                UINT_PTR ip,
                COR_PRF_FRAME_INFO frameInfo,
                ULONG32 contextSize,
                BYTE context[],
                void *clientData);

/* Callback for each object reference */
typedef BOOL STDMETHODCALLTYPE ObjectReferenceCallback(ObjectID root, ObjectID* reference, void *clientData);

typedef enum
{
    // These flags represent classes of callback events
    COR_PRF_MONITOR_NONE                = 0x00000000,

    // MONITOR_FUNCTION_UNLOADS controls the
    // FunctionUnloadStarted callback.
    COR_PRF_MONITOR_FUNCTION_UNLOADS    = 0x00000001,

    // MONITOR_CLASS_LOADS controls the ClassLoad*
    // and ClassUnload* callbacks.
    // See the comments on those callbacks for important
    // behavior changes in V2.
    COR_PRF_MONITOR_CLASS_LOADS         = 0x00000002,

    // MONITOR_MODULE_LOADS controls the
    // ModuleLoad*, ModuleUnload*, and ModuleAttachedToAssembly
    // callbacks.
    COR_PRF_MONITOR_MODULE_LOADS        = 0x00000004,

    // MONITOR_ASSEMBLY_LOADS controls the
    // AssemblyLoad* and AssemblyUnload* callbacks
    COR_PRF_MONITOR_ASSEMBLY_LOADS      = 0x00000008,

    // MONITOR_APPDOMAIN_LOADS controls the
    // AppDomainCreation* and AppDomainShutdown* callbacks
    COR_PRF_MONITOR_APPDOMAIN_LOADS     = 0x00000010,

    // MONITOR_JIT_COMPILATION controls the
    // JITCompilation*, JITFunctionPitched, and JITInlining
    // callbacks.
    COR_PRF_MONITOR_JIT_COMPILATION     = 0x00000020,


    // MONITOR_EXCEPTIONS controls the ExceptionThrown,
    // ExceptionSearch*, ExceptionOSHandler*, ExceptionUnwind*,
    // and ExceptionCatcher* callbacks.
    COR_PRF_MONITOR_EXCEPTIONS          = 0x00000040,

    // MONITOR_GC controls the GarbageCollectionStarted/Finished,
    // MovedReferences, SurvivingReferences,
    // ObjectReferences, ObjectsAllocatedByClass,
    // RootReferences*, HandleCreated/Destroyed, and FinalizeableObjectQueued
    // callbacks.
    COR_PRF_MONITOR_GC                  = 0x00000080,

    // MONITOR_OBJECT_ALLOCATED controls the
    // ObjectAllocated callback.
    COR_PRF_MONITOR_OBJECT_ALLOCATED    = 0x00000100,

    // MONITOR_THREADS controls the ThreadCreated,
    // ThreadDestroyed, ThreadAssignedToOSThread,
    // and ThreadNameChanged callbacks.
    COR_PRF_MONITOR_THREADS             = 0x00000200,

    // CORECLR DEPRECATION WARNING: Remoting no longer exists in coreclr
    // MONITOR_REMOTING controls the Remoting*
    // callbacks.
    COR_PRF_MONITOR_REMOTING            = 0x00000400,

    // MONITOR_CODE_TRANSITIONS controls the
    // UnmanagedToManagedTransition and
    // ManagedToUnmanagedTransition callbacks.
    COR_PRF_MONITOR_CODE_TRANSITIONS    = 0x00000800,

    // MONITOR_ENTERLEAVE controls the
    // FunctionEnter*/Leave*/Tailcall* callbacks
    COR_PRF_MONITOR_ENTERLEAVE          = 0x00001000,

    // MONITOR_CCW controls the COMClassicVTable*
    // callbacks.
    COR_PRF_MONITOR_CCW                 = 0x00002000,

    // CORECLR DEPRECATION WARNING: Remoting no longer exists in coreclr
    // MONITOR_REMOTING_COOKIE controls whether
    // a cookie will be passed to the Remoting* callbacks
    COR_PRF_MONITOR_REMOTING_COOKIE     = 0x00004000 | COR_PRF_MONITOR_REMOTING,

    // CORECLR DEPRECATION WARNING: Remoting no longer exists in coreclr
    // MONITOR_REMOTING_ASYNC controls whether
    // the Remoting* callbacks will monitor async events
    COR_PRF_MONITOR_REMOTING_ASYNC      = 0x00008000 | COR_PRF_MONITOR_REMOTING,

    // MONITOR_SUSPENDS controls the RuntimeSuspend*,
    // RuntimeResume*, RuntimeThreadSuspended, and
    // RuntimeThreadResumed callbacks.
    COR_PRF_MONITOR_SUSPENDS            = 0x00010000,

    // MONITOR_CACHE_SEARCHES controls the
    // JITCachedFunctionSearch* callbacks.
    // See the comments on those callbacks for important
    // behavior changes in V2.
    COR_PRF_MONITOR_CACHE_SEARCHES      = 0x00020000,

    // NOTE: ReJIT is now supported again.  The profiler must set this flag on
    // startup in order to use RequestReJIT or RequestRevert.  If the profiler specifies
    // this flag, then the profiler must also specify COR_PRF_DISABLE_ALL_NGEN_IMAGES
    COR_PRF_ENABLE_REJIT                = 0x00040000,

    // V2 MIGRATION WARNING: DEPRECATED
    // Inproc debugging is no longer supported. ENABLE_INPROC_DEBUGGING
    // has no effect.
    COR_PRF_ENABLE_INPROC_DEBUGGING     = 0x00080000,

    // V2 MIGRATION NOTE: DEPRECATED
    // The runtime now always tracks IL-native maps; this flag is thus always
    // considered to be set.
    COR_PRF_ENABLE_JIT_MAPS             = 0x00100000,

    // DISABLE_INLINING tells the runtime to disable all inlining
    COR_PRF_DISABLE_INLINING            = 0x00200000,

    // DISABLE_OPTIMIZATIONS tells the runtime to disable all code optimizations
    COR_PRF_DISABLE_OPTIMIZATIONS       = 0x00400000,

    // ENABLE_OBJECT_ALLOCATED tells the runtime that the profiler may want
    // object allocation notifications.  This must be set during initialization if the profiler
    // ever wants object notifications (using COR_PRF_MONITOR_OBJECT_ALLOCATED)
    COR_PRF_ENABLE_OBJECT_ALLOCATED     = 0x00800000,

    // MONITOR_CLR_EXCEPTIONS controls the ExceptionCLRCatcher*
    // callbacks.
    COR_PRF_MONITOR_CLR_EXCEPTIONS      = 0x01000000,

    // All callback events are enabled with this flag
    COR_PRF_MONITOR_ALL                 = 0x0107FFFF,

    // ENABLE_FUNCTION_ARGS enables argument tracing through FunctionEnter2.
    COR_PRF_ENABLE_FUNCTION_ARGS        = 0X02000000,

    // ENABLE_FUNCTION_RETVAL enables retval tracing through FunctionLeave2.
    COR_PRF_ENABLE_FUNCTION_RETVAL      = 0X04000000,

    // ENABLE_FRAME_INFO enables retrieval of exact ClassIDs for generic functions using
    // GetFunctionInfo2 with a COR_PRF_FRAME_INFO obtained from FunctionEnter2.
    COR_PRF_ENABLE_FRAME_INFO           = 0X08000000,

    // ENABLE_STACK_SNAPSHOT enables the used of DoStackSnapshot calls.
    COR_PRF_ENABLE_STACK_SNAPSHOT       = 0X10000000,

    // USE_PROFILE_IMAGES causes the native image search to look for profiler-enhanced
    // images.  If no profiler-enhanced image is found for a given assembly the
    // runtime will fallback to JIT for that assembly.
    COR_PRF_USE_PROFILE_IMAGES          = 0x20000000,

    // COR_PRF_DISABLE_TRANSPARENCY_CHECKS_UNDER_FULL_TRUST will disable security
    // transparency checks normally done during JIT compilation and class loading for
    // full trust assemblies. This can make some instrumentation easier to perform.
    COR_PRF_DISABLE_TRANSPARENCY_CHECKS_UNDER_FULL_TRUST
                                        = 0x40000000,

    // Prevents all NGEN images (including profiler-enhanced images) from loading.  If
    // this and COR_PRF_USE_PROFILE_IMAGES are both specified,
    // COR_PRF_DISABLE_ALL_NGEN_IMAGES wins.
    COR_PRF_DISABLE_ALL_NGEN_IMAGES     = 0x80000000,

    // The mask for valid mask bits
    COR_PRF_ALL                         = 0x8FFFFFFF,

    // COR_PRF_REQUIRE_PROFILE_IMAGE represents all flags that require profiler-enhanced
    // images.
    COR_PRF_REQUIRE_PROFILE_IMAGE       = COR_PRF_USE_PROFILE_IMAGES |
                                          COR_PRF_MONITOR_CODE_TRANSITIONS |
                                          COR_PRF_MONITOR_ENTERLEAVE,

    COR_PRF_ALLOWABLE_AFTER_ATTACH      = COR_PRF_MONITOR_THREADS |
                                          COR_PRF_MONITOR_MODULE_LOADS |
                                          COR_PRF_MONITOR_ASSEMBLY_LOADS |
                                          COR_PRF_MONITOR_APPDOMAIN_LOADS |
                                          COR_PRF_ENABLE_STACK_SNAPSHOT |
                                          COR_PRF_MONITOR_GC |
                                          COR_PRF_MONITOR_SUSPENDS |
                                          COR_PRF_MONITOR_CLASS_LOADS |
                                          COR_PRF_MONITOR_EXCEPTIONS |
                                          COR_PRF_MONITOR_JIT_COMPILATION |
                                          COR_PRF_ENABLE_REJIT,

    COR_PRF_ALLOWABLE_NOTIFICATION_PROFILER
                                        =     COR_PRF_MONITOR_FUNCTION_UNLOADS |
                                              COR_PRF_MONITOR_CLASS_LOADS |
                                              COR_PRF_MONITOR_MODULE_LOADS |
                                              COR_PRF_MONITOR_ASSEMBLY_LOADS |
                                              COR_PRF_MONITOR_APPDOMAIN_LOADS |
                                              COR_PRF_MONITOR_JIT_COMPILATION |
                                              COR_PRF_MONITOR_EXCEPTIONS |
                                              COR_PRF_MONITOR_OBJECT_ALLOCATED |
                                              COR_PRF_MONITOR_THREADS |
                                              COR_PRF_MONITOR_CODE_TRANSITIONS |
                                              COR_PRF_MONITOR_CCW |
                                              COR_PRF_MONITOR_SUSPENDS |
                                              COR_PRF_MONITOR_CACHE_SEARCHES |
                                              COR_PRF_DISABLE_INLINING |
                                              COR_PRF_DISABLE_OPTIMIZATIONS |
                                              COR_PRF_ENABLE_OBJECT_ALLOCATED |
                                              COR_PRF_MONITOR_CLR_EXCEPTIONS |
                                              COR_PRF_ENABLE_STACK_SNAPSHOT |
                                              COR_PRF_USE_PROFILE_IMAGES |
                                              COR_PRF_DISABLE_ALL_NGEN_IMAGES,

    // MONITOR_IMMUTABLE represents all flags that may only be set during initialization.
    // Trying to change any of these flags elsewhere will result in a
    // failed HRESULT.
    COR_PRF_MONITOR_IMMUTABLE           = COR_PRF_MONITOR_CODE_TRANSITIONS |
                                          COR_PRF_MONITOR_REMOTING |
                                          COR_PRF_MONITOR_REMOTING_COOKIE |
                                          COR_PRF_MONITOR_REMOTING_ASYNC |
                                          COR_PRF_ENABLE_INPROC_DEBUGGING |
                                          COR_PRF_ENABLE_JIT_MAPS |
                                          COR_PRF_DISABLE_OPTIMIZATIONS |
                                          COR_PRF_DISABLE_INLINING |
                                          COR_PRF_ENABLE_OBJECT_ALLOCATED |
                                          COR_PRF_ENABLE_FUNCTION_ARGS |
                                          COR_PRF_ENABLE_FUNCTION_RETVAL |
                                          COR_PRF_ENABLE_FRAME_INFO |
                                          COR_PRF_USE_PROFILE_IMAGES |
                                          COR_PRF_DISABLE_TRANSPARENCY_CHECKS_UNDER_FULL_TRUST |
                                          COR_PRF_DISABLE_ALL_NGEN_IMAGES
} COR_PRF_MONITOR;

/*
 * Additional flags the profiler can specify via SetEventMask2 when loading
 */
typedef enum
{
    COR_PRF_HIGH_MONITOR_NONE                       = 0x00000000,

    // CORECLR DEPRECATION WARNING: This flag is no longer checked by the runtime
    COR_PRF_HIGH_ADD_ASSEMBLY_REFERENCES            = 0x00000001,

    COR_PRF_HIGH_IN_MEMORY_SYMBOLS_UPDATED          = 0x00000002,

    COR_PRF_HIGH_MONITOR_DYNAMIC_FUNCTION_UNLOADS   = 0x00000004,

    COR_PRF_HIGH_DISABLE_TIERED_COMPILATION         = 0x00000008,

    COR_PRF_HIGH_BASIC_GC                           = 0x00000010,

    // Enables the MovedReferences/MovedReferences2 callback for compacting GCs only.
    COR_PRF_HIGH_MONITOR_GC_MOVED_OBJECTS           = 0x00000020,

    COR_PRF_HIGH_REQUIRE_PROFILE_IMAGE              = 0,

    // Enables the large object allocation monitoring according to the LOH threshold.
    COR_PRF_HIGH_MONITOR_LARGEOBJECT_ALLOCATED      = 0x00000040,

    COR_PRF_HIGH_MONITOR_EVENT_PIPE                 = 0x00000080,

    // Enables the pinned object allocation monitoring.
    COR_PRF_HIGH_MONITOR_PINNEDOBJECT_ALLOCATED     = 0x00000100,

    COR_PRF_HIGH_ALLOWABLE_AFTER_ATTACH             = COR_PRF_HIGH_IN_MEMORY_SYMBOLS_UPDATED |
                                                      COR_PRF_HIGH_MONITOR_DYNAMIC_FUNCTION_UNLOADS |
                                                      COR_PRF_HIGH_BASIC_GC |
                                                      COR_PRF_HIGH_MONITOR_GC_MOVED_OBJECTS |
                                                      COR_PRF_HIGH_MONITOR_LARGEOBJECT_ALLOCATED |
                                                      COR_PRF_HIGH_MONITOR_EVENT_PIPE,

    COR_PRF_HIGH_ALLOWABLE_NOTIFICATION_PROFILER
                                        =     COR_PRF_HIGH_IN_MEMORY_SYMBOLS_UPDATED |
                                              COR_PRF_HIGH_MONITOR_DYNAMIC_FUNCTION_UNLOADS |
                                              COR_PRF_HIGH_DISABLE_TIERED_COMPILATION |
                                              COR_PRF_HIGH_BASIC_GC |
                                              COR_PRF_HIGH_MONITOR_GC_MOVED_OBJECTS |
                                              COR_PRF_HIGH_MONITOR_LARGEOBJECT_ALLOCATED |
                                              COR_PRF_HIGH_MONITOR_EVENT_PIPE,

    // MONITOR_IMMUTABLE represents all flags that may only be set during initialization.
    // Trying to change any of these flags elsewhere will result in a
    // failed HRESULT.
    COR_PRF_HIGH_MONITOR_IMMUTABLE                  = COR_PRF_HIGH_DISABLE_TIERED_COMPILATION,

} COR_PRF_HIGH_MONITOR;

/*
 * COR_PRF_MISC contains miscellaneous constant ID's used for special
 * purposes.
 */
typedef enum
{
    // PROFILER_PARENT_UNKNOWN is the AssemblyID used by GetModuleInfo
    // when a module has not yet been attached to an assembly.
    PROFILER_PARENT_UNKNOWN             = 0xFFFFFFFD,

    // PROFILER_GLOBAL_CLASS is a ClassID used for globals that belong to no class
    PROFILER_GLOBAL_CLASS               = 0xFFFFFFFE,

    // PROFILER_GLOBAL_MODULE is a ModuleID used for globals that belong
    // to no module in particular
    PROFILER_GLOBAL_MODULE              = 0xFFFFFFFF
} COR_PRF_MISC;

/*
 * COR_PRF_JIT_CACHE contains values used to express the result of a
 * cached function search. Note that FOUND is 0, and thus this is not truly
 * a boolean.
 */
typedef enum
{
    COR_PRF_CACHED_FUNCTION_FOUND,
    COR_PRF_CACHED_FUNCTION_NOT_FOUND
} COR_PRF_JIT_CACHE;

/*
 * COR_PRF_TRANSITION_REASON contains values used to describe
 * the reason for a ManagedToUnmanaged or UnmanagedToManagedTransition
 * callback.
 */
typedef enum
{
    COR_PRF_TRANSITION_CALL,
    COR_PRF_TRANSITION_RETURN
} COR_PRF_TRANSITION_REASON;

/*
 * COR_PRF_SUSPEND_REASON contains values used to describe the
 * reason for suspending the runtime. See the RuntimeSuspension*
 * callbacks for detailed descriptions of each.
 */
typedef enum
{
    COR_PRF_SUSPEND_OTHER                   = 0,
    COR_PRF_SUSPEND_FOR_GC                  = 1,
    COR_PRF_SUSPEND_FOR_APPDOMAIN_SHUTDOWN  = 2,
    COR_PRF_SUSPEND_FOR_CODE_PITCHING       = 3,
    COR_PRF_SUSPEND_FOR_SHUTDOWN            = 4,
    COR_PRF_SUSPEND_FOR_INPROC_DEBUGGER     = 6,
    COR_PRF_SUSPEND_FOR_GC_PREP             = 7,
    COR_PRF_SUSPEND_FOR_REJIT               = 8,
    COR_PRF_SUSPEND_FOR_PROFILER            = 9,
} COR_PRF_SUSPEND_REASON;

/*
 * COR_PRF_RUNTIME_TYPE contains values used to indicate the
 * type of runtime.
 */
typedef enum
{
    COR_PRF_DESKTOP_CLR = 0x1,
    COR_PRF_CORE_CLR    = 0x2,
} COR_PRF_RUNTIME_TYPE;

/*
 * COR_PRF_REJIT_FLAGS contains values used to control the behavior of
 * RequestReJITWithInliners.
 */
typedef enum
{
    // ReJITted methods will be prevented from being inlined
    COR_PRF_REJIT_BLOCK_INLINING = 0x1,

    // This flag controls whether the runtime will call GetReJITParameters
    // on methods that are ReJITted because they inline a method that was requested
    // for ReJIT
    COR_PRF_REJIT_INLINING_CALLBACKS    = 0x2
} COR_PRF_REJIT_FLAGS;

typedef UINT_PTR EVENTPIPE_PROVIDER;
typedef UINT_PTR EVENTPIPE_EVENT;
typedef UINT64   EVENTPIPE_SESSION;

typedef enum
{
    COR_PRF_EVENTPIPE_OBJECT = 1,         // Instance that isn't a value
    COR_PRF_EVENTPIPE_BOOLEAN = 3,        // Boolean
    COR_PRF_EVENTPIPE_CHAR = 4,           // Unicode character
    COR_PRF_EVENTPIPE_SBYTE = 5,          // Signed 8-bit integer
    COR_PRF_EVENTPIPE_BYTE = 6,           // Unsigned 8-bit integer
    COR_PRF_EVENTPIPE_INT16 = 7,          // Signed 16-bit integer
    COR_PRF_EVENTPIPE_UINT16 = 8,         // Unsigned 16-bit integer
    COR_PRF_EVENTPIPE_INT32 = 9,          // Signed 32-bit integer
    COR_PRF_EVENTPIPE_UINT32 = 10,        // Unsigned 32-bit integer
    COR_PRF_EVENTPIPE_INT64 = 11,         // Signed 64-bit integer
    COR_PRF_EVENTPIPE_UINT64 = 12,        // Unsigned 64-bit integer
    COR_PRF_EVENTPIPE_SINGLE = 13,        // IEEE 32-bit float
    COR_PRF_EVENTPIPE_DOUBLE = 14,        // IEEE 64-bit double
    COR_PRF_EVENTPIPE_DECIMAL = 15,       // Decimal
    COR_PRF_EVENTPIPE_DATETIME = 16,      // DateTime
    COR_PRF_EVENTPIPE_GUID = 17,          // Guid
    COR_PRF_EVENTPIPE_STRING = 18,        // Unicode character string
    COR_PRF_EVENTPIPE_ARRAY = 19,         // Arbitrary length array
} COR_PRF_EVENTPIPE_PARAM_TYPE;

typedef enum
{
    COR_PRF_EVENTPIPE_LOGALWAYS = 0,
    COR_PRF_EVENTPIPE_CRITICAL = 1,
    COR_PRF_EVENTPIPE_ERROR = 2,
    COR_PRF_EVENTPIPE_WARNING = 3,
    COR_PRF_EVENTPIPE_INFORMATIONAL = 4,
    COR_PRF_EVENTPIPE_VERBOSE = 5
} COR_PRF_EVENTPIPE_LEVEL;

typedef struct
{
    const WCHAR* providerName;
    UINT64       keywords;
    UINT32       loggingLevel;
    // filterData expects a semicolon delimited string that defines key value pairs
    // such as "key1=value1;key2=value2;". Quotes can be used to escape the '=' and ';'
    // characters. These key value pairs will be passed in the enable callback to event
    // providers
    const WCHAR* filterData;
} COR_PRF_EVENTPIPE_PROVIDER_CONFIG;

typedef struct
{
    UINT32       type;
    // Used if type == ArrayType
    UINT32       elementType;
    const WCHAR *name;
} COR_PRF_EVENTPIPE_PARAM_DESC;

typedef struct
{
    UINT64 ptr;
    UINT32 size;
    UINT32 reserved;
} COR_PRF_EVENT_DATA;

typedef struct
{
    UINT64 Ptr;
    UINT32 Size;
    UINT32 Type;
} COR_PRF_FILTER_DATA;

typedef STDMETHODCALLTYPE void EventPipeProviderCallback(
    const UINT8 *source_id,
    UINT32 is_enabled,
    UINT8 level,
    UINT64 match_any_keywords,
    UINT64 match_all_keywords,
    COR_PRF_FILTER_DATA *filter_data,
    void *callback_data);

typedef enum _COR_PRF_HANDLE_TYPE
{
    COR_PRF_HANDLE_TYPE_WEAK    = 0x1,
    COR_PRF_HANDLE_TYPE_STRONG  = 0x2,
    COR_PRF_HANDLE_TYPE_PINNED  = 0x3,
} COR_PRF_HANDLE_TYPE;

typedef void** ObjectHandleID;

/*
* Callback for each object in the GC Heap
*/
typedef BOOL STDMETHODCALLTYPE (* ObjectCallback)(ObjectID object, void* callbackState);

/* -------------------------------------------------------------------------- *
 * Forward declarations
 * -------------------------------------------------------------------------- */

interface ICorProfilerCallback;
interface ICorProfilerCallback2;
interface ICorProfilerCallback3;
interface ICorProfilerCallback4;
interface ICorProfilerInfo;
interface ICorProfilerInfo2;
interface ICorProfilerInfo3;
interface ICorProfilerInfo4;
interface ICorProfilerObjectEnum;
interface ICorProfilerFunctionEnum;
interface ICorProfilerModuleEnum;
interface ICorProfilerThreadEnum;
interface ICorProfilerMethodEnum;
interface IMethodMalloc;
interface ICorProfilerFunctionControl;
interface ICorProfilerAssemblyReferenceProvider;
/* -------------------------------------------------------------------------- *
 * User Callback interface
 * -------------------------------------------------------------------------- */

/*
 * The ICorProfilerCallback interface is used by the CLR to notify a
 * code profiler when events have occurred that the code profiler has registered
 * an in interest in receiving. This is the primary callback interface through
 * which the CLR communicates with the code profiler. A code profiler
 * must register this callback interface in the Win32 registry. This object has
 * several methods that receive notification from the runtime when an event is
 * about to occur in an executing runtime process.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 */

[
    object,
    uuid(176FBED1-A55C-4796-98CA-A9DA0EF883E7),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback : IUnknown
{

    /*
     *
     * STARTUP/SHUTDOWN EVENTS
     *
     */

    /*
     * The CLR calls Initialize to setup the code profiler
     * whenever a new CLR application is started. The call provides
     * an IUnknown interface pointer that should be QI'd for an ICorProfilerInfo
     * interface pointer.
     *
     * NOTE: this is the only opportunity to enable callbacks that are a part
     * of COR_PRF_MONITOR_IMMUTABLE, since they can no longer be changed after
     * returning from this function.  This is done through SetEventMask on the
     * ICorProfilerInfo object.
     */
    HRESULT Initialize(
                [in] IUnknown     *pICorProfilerInfoUnk);

    /*
     * The CLR calls Shutdown to notify the code profiler that
     * the application is exiting.  This is the profiler's last opportunity to
     * safely call functions on the ICorProfilerInfo interface.  After returning
     * from this function the runtime will proceed to unravel its internal data
     * structures and any calls to ICorProfilerInfo are undefined in their
     * behaviour.
     *
     * NOTE: Certain IMMUTABLE events may still occur after Shutdown.
     *
     * NOTE: Shutdown will only fire where the managed application that is being
     * profiled was started running managed code (i.e., the initial frame on the
     * process' stack is managed).  If the application being profiled started
     * life as unmanaged code, which later 'jumped into' managed code (thereby
     * creating an instance of the CLR), then Shutdown will not fire.  In these
     * cases, the profiler should include a DllMain routine in their library that
     * uses Win32's DLL_PROCESS_DETACH call to free any resources and perform tidy-up
     * processing of its data (flush traces to disk, etc)
     *
     * NOTE: The profiler must in general cope with unexpected shutdowns, such as
     * when the process is "killed" by Win32's TerminateProcess.
     *
     * NOTE: Sometimes the CLR will violently kill certain managed threads
     * (background threads) without delivering orderly destruction messages for them.
     */
    HRESULT Shutdown();


    /*
     *
     * APPLICATION DOMAIN EVENTS
     *
     */

    /*
     * Called when an application domain creation has begun and ended.
     * The ID is not valid for any information request until the Finished
     * event is called.
     *
     * Some parts of app domain loading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of app domain creation succeeded.
     */
    HRESULT AppDomainCreationStarted(
                [in] AppDomainID appDomainId);

    HRESULT AppDomainCreationFinished(
                [in] AppDomainID appDomainId,
                [in] HRESULT     hrStatus);

    /*
     * Called before and after an app domain is unloaded from a process.
     * The ID is no longer valid after the Started event returns.
     *
     * Some parts of app domain unloading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of app domain unloading succeeded.
     */
    HRESULT AppDomainShutdownStarted(
                [in] AppDomainID appDomainId);

    HRESULT AppDomainShutdownFinished(
                [in] AppDomainID appDomainId,
                [in] HRESULT     hrStatus);

    /*
     *
     * ASSEMBLY EVENTS
     *
     */

    /*
     * Called when an Assembly load has begun and ended. The ID is not valid
     * for any information request until the Finished event is called.
     *
     * Some parts of assembly loading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of assembly loading succeeded.
     */
    HRESULT AssemblyLoadStarted(
                [in] AssemblyID assemblyId);

    HRESULT AssemblyLoadFinished(
                [in] AssemblyID assemblyId,
                [in] HRESULT    hrStatus);

    /*
     * Called before and after an assembly is unloaded.
     * The ID is no longer valid after the Started event returns.
     *
     * Some parts of assembly unloading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of assembly unloading succeeded.
     */
    HRESULT AssemblyUnloadStarted(
                [in] AssemblyID assemblyId);

    HRESULT AssemblyUnloadFinished(
                [in] AssemblyID assemblyId,
                [in] HRESULT    hrStatus);


    /*
     *
     * MODULE EVENTS
     *
     */

    /*
     * Called when a module load has begun and ended. The ID is not valid
     * for any information request until the Finished event is called.
     *
     * Some parts of module loading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of module loading succeeded.
     *
     * Note that when a module load is reported as finished this indicates
     * that the load has completed but it has not yet returned to the caller.
     * This is the opportunity for the profiler to note that other notifications regarding
     * this module may start coming afterwards however internal safeguards
     * protecting the runtime from recursive loading are still present and so it is
     * a bad time to begin inquiries on this module.  The notification is informational
     * only.
     *
     * Note: ModuleLoadFinished is a reasonable time to interrogate MetaData via API's
     * like GetModuleMetadata, however APIs that create (e.g. ClassID's and FunctionID's)
     * are not safe to use here.  Profiler writers are advised to stay in the universe of
     * tokens.
     *
     */
    HRESULT ModuleLoadStarted(
                [in] ModuleID moduleId);

    HRESULT ModuleLoadFinished(
                [in] ModuleID moduleId,
                [in] HRESULT  hrStatus);

    /*
     * Called before and after a module is unloaded.
     * The ID is no longer valid after the Started event returns.
     *
     * Some parts of module unloading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of module unloading succeeded.
     */
    HRESULT ModuleUnloadStarted(
                [in] ModuleID moduleId);

    HRESULT ModuleUnloadFinished(
                [in] ModuleID moduleId,
                [in] HRESULT  hrStatus);

    /*
     * A module can get loaded through legacy means (ie: IAT or LoadLibrary) or
     * through a metadata reference.  The CLR loader therefore has many code
     * paths for determining what assembly a module lives in.  It is therefore
     * possible that after a ModuleLoadFinished event, the module does not
     * know what assembly it is in and getting the parent AssemblyID is not possible.
     * This event is fired when the module is officially attached to its parent
     * assembly.  Calling GetModuleInfo after this function is called will return the
     * proper parent assembly.
     */
    HRESULT ModuleAttachedToAssembly(
                [in] ModuleID   moduleId,
                [in] AssemblyID AssemblyId);


    /*
     *
     *  CLASS EVENTS
     *
     */

    /*
     * Called when a class load has begun and ended. The ID is not valid
     * for any information request until the Finished event is called.
     *
     * Some parts of class loading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of class loading succeeded.
     *
     * Note that when a class load is reported as finished this indicates
     * that the load has completed but it has not yet returned to the caller.
     * This is the opportunity for the profiler to note that other notifications regarding
     * this class may start coming afterwards however internal safeguards
     * protecting the runtime from recursive loading are still present and so it is
     * a bad time to begin inquiries on this class.  The notification is informational
     * only.
     *
     */
    HRESULT ClassLoadStarted(
                [in] ClassID classId);

    HRESULT ClassLoadFinished(
                [in] ClassID classId,
                [in] HRESULT hrStatus);

    /*
     * Called before and after a class is unloaded.
     * The ID is no longer valid after the Started event returns.
     *
     * Some parts of class unloading may take place lazily at some time
     * after the Finished callback. Therefore, while a failure HRESULT in
     * hrStatus definitely indicates a failure, a success HRESULT only indicates
     * that the first part of class unloading succeeded.
     */
    HRESULT ClassUnloadStarted(
                [in] ClassID classId);

    HRESULT ClassUnloadFinished(
                [in] ClassID classId,
                [in] HRESULT hrStatus);

    /*
     *
     * JIT EVENTS
     *
     */

    /*
     * The CLR calls FunctionUnloadStarted to notify the code
     * profiler that a function is being unloaded.  After returning from this
     * call, the FunctionID is no longer valid.
     */
    HRESULT FunctionUnloadStarted(
                [in] FunctionID functionId);


    /*
     * The CLR calls JITCompilationStarted to notify the code
     * profiler that the JIT compiler is starting to compile a function.
     *
     * The fIsSafeToBlock argument tells the profiler whether or not blocking
     * will affect the operation of the runtime.  If true, blocking may cause
     * the runtime to wait for the calling thread to return from this callback.
     * Although this will not harm the runtime, it will skew the profiling
     * results.
     *
     * NOTE: It is possible to receive more than one JITCompilationStarted/
     * JITCompilationFinished pair for each method.  This is because of how
     * the runtime handles class constructors: method A starts to be JIT'd,
     * then realizes that the class ctor for class B needs to be run, so
     * JIT's it and runs it, and while it's running makes a call to original
     * method A, which causes it to be JIT'd again, and causes the original
     * (incomplete) JIT'ing of A to be aborted.  However, both attempts to
     * JIT A are reported with JIT compilation events.  If the profiler is
     * going to replace IL code for this method with SetILFunctionBody, then
     * it must do so for both JITCompilationStarted events, but may use the
     * same IL block for both.
     *
     * NOTE: A profiler should be tolerant of the sequence of JIT callbacks
     * received in cases where two threads are simultaneously calling a
     * method.  For example, thread A receives JITCompilationStarted.
     * But before thread A receives JITCompilationFinished, thread B
     * receives FunctionEnter with the functionId from thread A's
     * JITCompilationStarted callback.  It may appear that functionId should
     * not yet be valid because JITCompilationFinished had not yet been
     * received.  But it is indeed valid in such a case.
     */
    HRESULT JITCompilationStarted(
                [in] FunctionID functionId,
                [in] BOOL       fIsSafeToBlock);

    /*
     * The CLR calls JITCompilationFinished to notify the code
     * profiler that the JIT compiler has finished compiling a function.
     *
     * The fIsSafeToBlock argument tells the profiler whether or not blocking
     * will affect the operation of the runtime.  If true, blocking may cause
     * the runtime to wait for the calling thread to return from this callback.
     * Although this will not harm the runtime, it will skew the profiling
     * results.
     *
     * The FunctionID is now valid in ICorProfilerInfo APIs.
     *
     * The hrStatus provides the success or failure of the operation
     */
    HRESULT JITCompilationFinished(
                [in] FunctionID functionId,
                [in] HRESULT    hrStatus,
                [in] BOOL       fIsSafeToBlock);

    /*
     * V2 MIGRATION WARNING: DOES NOT ALWAYS OCCUR
     * The JITCachedFunctionSearchStarted/Finished callbacks
     * will now occur only for some functions in regular NGEN images;
     * only profiler-optimized NGEN images will generate callbacks for
     * all functions in the image. Profilers which do not use these callbacks
     * to force a function to be JIT-compiled should move to using a lazy
     * strategy for gathering function information.
     *
     * This notifies the profiler when a search for a prejitted function is
     * starting.
     *
     *    functionId: the function for which the search is being performed.
     *    bUseCachedFunction: if true, the EE uses the cached function (if applicable)
     *                        if false, the EE jits the function instead of
     *                        using a pre-jitted version.
     *
     * NOTE: Profilers should be tolerant of cases where multiple threads of
     * a profiled app are calling the same method simultaneously.  For example,
     * thread A may receive JITCachedFunctionSearchStarted (and the
     * profiler sets *pbUseCachedFunction=FALSE to force a JIT), thread A
     * then receives JITCompilationStarted/JITCompilationFinished, then
     * thread B receives another JITCachedFunctionSearchStarted for the same
     * method.  It might appear odd to receive this final callback, since the
     * profiler already stated its intention to JIT the method.  But this is
     * occurring because the CLR in thread B decided to send this callback
     * before thread A responded to JITCachedFunctionSearchStarted
     * with *pbUseCachedFunction=FALSE, and the thread B callback
     * hadn't actually been sent until now due how the threads
     * happened to be scheduled.  In such cases where the profiler
     * receives duplicate JITCachedFunctionSearchStarted callbacks for
     * the same functionId, the profiler should be certain to set
     * *pbUseCachedFunction to the same value from this callback
     * when it is called multiple times with the same functionId.
     */
    HRESULT JITCachedFunctionSearchStarted(
                [in] FunctionID functionId,
                [out] BOOL      *pbUseCachedFunction);

    /*
     * V2 MIGRATION WARNING: DOES NOT ALWAYS OCCUR
     * The JITCachedFunctionSearchStarted/Finished callbacks
     * will now occur only for some functions in regular NGEN images;
     * only profiler-optimized NGEN images will generate callbacks for
     * all functions in the image. Profilers which do not use these callbacks
     * to force a function to be JIT-compiled should move to using a lazy
     * strategy for gathering function information.
     *
     * This notifies the profiler when a search for a cached function has been
     * performed.
     *
     *    functionId: the function for which the search has been performed.
     *    result: the result of the search.  There are two possible results:
     *        COR_PRF_CACHED_FUNCTION_FOUND
     *        COR_PRF_CACHED_FUNCTION_NOT_FOUND
     *
     */
    HRESULT JITCachedFunctionSearchFinished(
                [in] FunctionID        functionId,
                [in] COR_PRF_JIT_CACHE result);

    /*
     * The CLR calls JITFunctionPitched to notify the profiler
     * that a jitted function was removed from memory.  If the pitched
     * function is called in the future, the profiler will receive new
     * JIT compilation events as it is re-jitted.
     *
     * Currently the CLR JIT does not pitch functions, so this callback
     * will not be received.
     *
     * NOTE: the FunctionID is not valid until it is re-jitted.  When it is
     * re-jitted, it will use the same FunctionID value.
     */
    HRESULT JITFunctionPitched(
                [in] FunctionID functionId);

    /*
     * The CLR calls JITInlining to notify the profiler that the jitter
     * is about to inline calleeId into callerId.  Set pfShouldInline to FALSE
     * to prevent the callee from being inlined into the caller, and set to
     * TRUE to allow the inline to occur.
     *
     * NOTE: Inlined functions do not provide Enter/Leave events, so if you desire
     *       an accurate callgraph, you should set FALSE.  Be aware that
     *       setting FALSE will affect performance, since inlining typically
     *       increases speed and reduces separate jitting events for the inlined
     *       method.
     *
     * NOTE: It is also possible to globally disable inlining by setting the
     *       COR_PRF_DISABLE_INLINING flag.
     */
    HRESULT JITInlining(
                [in] FunctionID callerId,
                [in] FunctionID calleeId,
                [out] BOOL      *pfShouldInline);

    /*
     *
     * THREAD EVENTS
     *
     */

    /*
     * The CLR calls ThreadCreated to notify the code profiler
     * that a thread has been created.  The ThreadID is valid immediately.
     */
    HRESULT ThreadCreated(
                [in] ThreadID threadId);

    /*
     * The CLR calls ThreadDestroyed to notify the code profiler
     * that a thread has been destroyed.  The ThreadID is no longer valid
     * at the time of this call.
     */
    HRESULT ThreadDestroyed(
                [in] ThreadID threadId);

    /*
     * The CLR calls ThreadAssignedToOSThread to tell the profiler
     * that a managed thread is being implemented via a particular OS thread.
     * This callback exists so that the profiler can maintain an accurate
     * OS to Managed thread mapping across fibres.
     */
    HRESULT ThreadAssignedToOSThread(
                [in] ThreadID managedThreadId,
                [in] DWORD    osThreadId);

    /*
     *
     * REMOTING EVENTS
     *
     */

    //
    // Client-side events
    //

    /*
     * NOTE: each of the following pairs of callbacks will occur on the same
     *       thread
     *   RemotingClientInvocationStarted  & RemotingClientSendingMessage
     *   RemotingClientReceivingReply     & RemotingClientInvocationFinished
     *   RemotingServerInvocationReturned & RemotingServerSendingReply
     *
     * There are a few issues with the remoting callbacks that should be outlined.
     * First, remoting function execution is not reflected by the profiler API, so
     * the notifications for functions that are called from the client and executed
     * to the server are not properly received. The actual invocation happens via a
     * proxy object. That creates the illusion to the profiler that certain
     * functions get jit-compiled but they never get used. Second, the profiler does
     * not receive accurate notifications for asynchronous remoting events.
     */

    /*
     * The CLR calls RemotingClientInvocationStarted to notify the profiler that
     * a remoting call has begun.  This event is the same for synchronous and
     * asynchronous calls.
     */
    HRESULT RemotingClientInvocationStarted();

    /*
     * The CLR calls RemotingClientSendingMessage to notify the profiler that
     * a remoting call is requiring the caller to send an invocation request through
     * a remoting channel.
     *
     * pCookie  - if remoting GUID cookies are active, this value will correspond with the
     *            the value provided in RemotingServerReceivingMessage, if the channel
     *            succeeds in transmitting the message, and if GUID cookies are active on
     *            the server-side process.  This allows easy pairing of remoting calls,
     *            and the creation of a logical call stack.
     * fIsAsync - is true if the call is asynchronous.
     */
    HRESULT RemotingClientSendingMessage(
                [in] GUID *pCookie,
                [in] BOOL fIsAsync);

    /*
     * The CLR calls RemotingClientReceivingReply to notify the profiler that
     * the server-side portion of a remoting call has completed and that the client is
     * now receiving and about to process the reply.
     *
     * pCookie  - if remoting GUID cookies are active, this value will correspond with the
     *            the value provided in RemotingServerSendingReply, if the channel
     *            succeeds in transmitting the message, and if GUID cookies are active on
     *            the server-side process.  This allows easy pairing of remoting calls.
     * fIsAsync - is true if the call is asynchronous.
     */
    HRESULT RemotingClientReceivingReply(
                [in] GUID *pCookie,
                [in] BOOL fIsAsync);

    /*
     * The CLR calls RemotingClientInvocationFinished to notify the profiler that
     * a remoting invocation has run to completion on the client side.  If the call was
     * synchronous, this means that it has also run to completion on the server side.  If
     * the call was asynchronous, a reply may still be expected when the call is handled.
     * If the call is asynchronous, and a reply is expected, then the reply will occur in
     * the form of a call to RemotingClientReceivingReply and an additional call to
     * RemotingClientInvocationFinished to indicate the required secondary processing of
     * an asynchronous call.
     */
    HRESULT RemotingClientInvocationFinished();

    //
    // Server-side events
    //

    /*
     * The CLR calls RemotingServerReceivingMessage to notify the profiler that
     * the process has received a remote method invocation (or activation) request.  If
     * the message request is asynchronous, then the request may be serviced by any
     * arbitrary thread.
     *
     * pCookie  - if remoting GUID cookies are active, this value will correspond with the
     *            the value provided in RemotingClientSendingMessage, if the channel
     *            succeeds in transmitting the message, and if GUID cookies are active on
     *            the client-side process.  This allows easy pairing of remoting calls.
     * fIsAsync - is true if the call is asynchronous.
     */
    HRESULT RemotingServerReceivingMessage(
                [in] GUID *pCookie,
                [in] BOOL fIsAsync);

    /*
     * The CLR calls RemotingServerInvocationStarted to notify the profiler that
     * the process is invoking a method due to a remote method invocation request.
     */
    HRESULT RemotingServerInvocationStarted();

    /*
     * The CLR calls RemotingServerInvocationReturned to notify the profiler that
     * the process has finished invoking a method due to a remote method invocation request.
     */
    HRESULT RemotingServerInvocationReturned();

    /*
     * The CLR calls RemotingServerSendingReply to notify the profiler that
     * the process has finished processing a remote method invocation request and is
     * about to transmit the reply through a channel.
     *
     * pCookie  - if remoting GUID cookies are active, this value will correspond with the
     *            the value provided in RemotingClientReceivingReply, if the channel
     *            succeeds in transmitting the message, and if GUID cookies are active on
     *            the client-side process.  This allows easy pairing of remoting calls.
     * fIsAsync - is true if the call is asynchronous.
     */
    HRESULT RemotingServerSendingReply(
                [in] GUID *pCookie,
                [in] BOOL fIsAsync);

    /*
     *
     * TRANSITION EVENTS
     *
     */

    /*
     * The CLR calls UnmanagedToManagedTransition to notify the
     * code profiler that a transition from unmanaged code to managed code has
     * occurred. functionId is always the ID of the callee, and reason
     * indicates whether the transition was due to a call into managed code from
     * unmanaged, or a return from an unmanaged function called by a managed one.
     *
     * Note that if the reason is COR_PRF_TRANSITION_RETURN and the functionId is
     * non-NULL, then the functionId is that of the unmanaged function, and will
     * never have been jitted. Unmanaged functions still have some basic
     * information associated with them, such as a name, and some metadata.
     *
     * Note that if the reason is COR_PRF_TRANSITION_RETURN and the callee was
     * a PInvoke call indirect, then the runtime does not know the destination
     * of the call and functionId will be NULL.
     *
     * Note that if the reason is COR_PRF_TRANSITION_CALL then it may be possible
     * that the callee has not yet been JIT-compiled.
     */
    HRESULT UnmanagedToManagedTransition(
                [in] FunctionID                functionId,
                [in] COR_PRF_TRANSITION_REASON reason);


    /*
     * The CLR calls ManagedToUnmanagedTransition to notify the
     * code profiler that a transition from managed code to unmanaged code has
     * occurred. functionId is always the ID of the callee, and reason
     * indicates whether the transition was due to a call into unmanaged code from
     * managed, or a return from an managed function called by an unmanaged one.
     *
     * Note that if the reason is COR_PRF_TRANSITION_CALL, then the functionId
     * is that of the unmanaged function, and will never have been jitted.
     * Unmanaged functions still have some basic information associated with
     * them, such as a name, and some metadata.
     *
     * Note that if the reason is COR_PRF_TRANSITION_CALL and the callee is
     * a PInvoke call indirect, then the runtime does not know the destination
     * of the call and functionId will be NULL.
     */
    HRESULT ManagedToUnmanagedTransition(
                [in] FunctionID                functionId,
                [in] COR_PRF_TRANSITION_REASON reason);


    /*
     *
     * RUNTIME SUSPENSION EVENTS
     *
     */

    /*
     * The CLR calls RuntimeSuspendStarted to notify the code profiler
     * that the runtime is about to suspend all of the runtime threads.
     * All runtime threads that are in unmanaged code are permitted to continue
     * running until they try to re-enter the runtime, at which point they will
     * also suspend until the runtime resumes.  This also applies to new threads
     * that enter the runtime.  All threads within the runtime are either
     * suspended immediately if they are in interruptible code, or asked to
     * suspend when they do reach interruptible code.
     *
     * suspendReason make be any of the following values:
     *  COR_PRF_SUSPEND_FOR_GC
     *      the runtime is suspending to service a GC request.  The GC-related
     *      callbacks will occur between the RuntimeSuspendFinished and
     *      RuntimeResumeStarted events.
     *  COR_PRF_SUSPEND_FOR_CODE_PITCHING
     *      the runtime is suspending so that code pitching may occur.  This
     *      only occurs when the EJit is active with code pitching enabled.
     *      Code pitching callbacks will occur between the
     *      RuntimeSuspendFinished and RuntimeResumeStarted events.
     *  COR_PRF_SUSPEND_FOR_APPDOMAIN_SHUTDOWN
     *      the runtime is suspending so that an AppDomain can be shut down.
     *      While the runtime is suspended, the runtime will determine which
     *      threads are in the AppDomain that is being shut down, set them to
     *      abort when they resume, and then resumes the runtime.  There are
     *      no AppDomain-specific callbacks during this suspension.
     *  COR_PRF_SUSPEND_FOR_SHUTDOWN
     *      the runtime is shutting down, and it must suspend all threads to
     *      complete the operation.
     *  COR_PRF_SUSPEND_FOR_GC_PREP
     *      the runtime is preparing for a GC.
     *  COR_PRF_SUSPEND_FOR_INPROC_DEBUGGER
     *      the runtime is suspending for in-process debugging.
     *  COR_PRF_SUSPEND_FOR_PROFILER
     *      the runtime is suspending because of ICorProfilerInfo10::SuspendRuntime.
     *  COR_PRF_SUSPEND_OTHER
     *      the runtime is suspending for a reason other than those above.
     */
    HRESULT RuntimeSuspendStarted(
            [in] COR_PRF_SUSPEND_REASON suspendReason);

    /*
     * The CLR calls RuntimeSuspendFinished to notify the code profiler
     * that the runtime has suspended all threads needed for a runtime
     * suspension.  Note that not all runtime threads are required to be
     * suspended, as described in the comment for RuntimeSuspendStarted.
     *
     * NOTE: It is guaranteed that this event will occur on the same ThreadID
     * as RuntimeSuspendStarted occurred on.
     */
    HRESULT RuntimeSuspendFinished();

    /*
     * The CLR calls RuntimeSuspendAborted to notify the code profiler
     * that the runtime is aborting the runtime suspension that was occurring.
     * This may occur if two threads simultaneously attempt to suspend the
     * runtime.
     *
     * NOTE: It is guaranteed that this event will occur on the same ThreadID
     * as the RuntimeSuspendStarted occurred on, and that only one of
     * RuntimeSuspendFinished and RuntimeSuspendAborted may occur on a single
     * thread following a RuntimeSuspendStarted event.
     */
    HRESULT RuntimeSuspendAborted();

    /*
     * The CLR calls RuntimeResumeStarted to notify the code profiler
     * that the runtime is about to resume all of the runtime threads.
     */
    HRESULT RuntimeResumeStarted();

    /*
     * The CLR calls RuntimeResumeFinished to notify the code profiler
     * that the runtime has finished resuming all of it's threads and is now
     * back in normal operation.
     *
     * NOTE: It is *NOT* guaranteed that this event will occur on the same
     * ThreadID as the RuntimeSuspendStarted occurred on, but is guaranteed
     * to occur on the same ThreadID as the RuntimeResumeStarted occurred on.
     */
    HRESULT RuntimeResumeFinished();

    /*
     * The CLR calls RuntimeThreadSuspended to notify the code profiler
     * that a particular thread has been suspended.
     *
     * This notification may occur any time between the RuntimeSuspendStarted
     * and the associated RuntimeResumeStarted. Notifications that occur
     * between RuntimeSuspendFinished and RuntimeResumeStarted are for
     * threads that had been running in unmanaged code and were suspended
     * upon entry to the runtime.
     */
    HRESULT RuntimeThreadSuspended(
                    [in] ThreadID threadId);

    /*
     * The CLR calls RuntimeThreadResumed to notify the code profiler
     * that a particular thread has been resumed after being suspended due to
     * a runtime suspension.
     */
    HRESULT RuntimeThreadResumed(
                    [in] ThreadID threadId);

    /*
     *
     * GC EVENTS
     *
     * NOTE: All of these callbacks (except ObjectAllocated) are made while the
     *       runtime is suspended, so none of the ObjectID values can change until
     *       the runtime resumes and another GC occurs.
     *
     * NOTE: The profiler will receive GC-related events (except ObjectAllocated)
     *       when the profiler has been suspended for COR_PRF_SUSPEND_FOR_GC *except*
     *       for one special case.  When the runtime is shutting down, there is a
     *       stage where it is suspended for COR_PRF_SUSPEND_FOR_SHUTDOWN reason and
     *       is never resumed.  But after this suspension a garbage collection may
     *       occur without a COR_PRF_SUSPEND_FOR_GC suspension notification, and
     *       the profiler will thus receive GC-related callbacks.
     *
     * NOTE: All of these callbacks (except ObjectAllocated) may be called more than
     *       once during the same GC. These calls should be considered multiple parts of
     *       one long report; the profiler should simply aggregate the information provided
     *       in all of them.
     */

    /*
     * The CLR calls MovedReferences with information about
     * object references that moved as a result of garbage collection.
     *
     * cMovedObjectIDRanges is a count of the number of ObjectID ranges that
     *      were moved.
     * oldObjectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values before being moved.
     * newObjectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values after being moved.
     * cObjectIDRangeLength is an array of elements, each of which states the
     *      size of the moved ObjectID value range.
     *
     * The last three arguments of this function are parallel arrays.
     *
     * In other words, if an ObjectID value lies within the range
     *      oldObjectIDRangeStart[i] <= ObjectID < oldObjectIDRangeStart[i] + cObjectIDRangeLength[i]
     * for 0 <= i < cMovedObjectIDRanges, then the ObjectID value has changed to
     *      ObjectID - oldObjectIDRangeStart[i] + newObjectIDRangeStart[i]
     *
     * NOTE: None of the objectIDs returned by MovedReferences are valid during the callback
     * itself, as the GC may be in the middle of moving objects from old to new. Thus profilers
     * should not attempt to inspect objects during a MovedReferences call. At
     * GarbageCollectionFinished, all objects have been moved to their new locations, and
     * inspection may be done.
     *
     * THIS CALLBACK IS OBSOLETE. It reports ranges for objects >4GB as UINT32_MAX
     * on 64-bit platforms. Use ICorProfilerCallback4::MovedReferences2 instead.
     */
    HRESULT MovedReferences(
                [in]                                ULONG    cMovedObjectIDRanges,
                [in, size_is(cMovedObjectIDRanges)] ObjectID oldObjectIDRangeStart[] ,
                [in, size_is(cMovedObjectIDRanges)] ObjectID newObjectIDRangeStart[] ,
                [in, size_is(cMovedObjectIDRanges)] ULONG    cObjectIDRangeLength[] );

    /*
     * The CLR calls ObjectAllocated to notify the code profiler
     * an object was allocated on the heap. This notification does not fire
     * for allocations from the stack, nor from unmanaged memory.
     *
     * It is possible to receive a classId that corresponds to a regular class
     * that has not been loaded yet. The profiler will receive a class load
     * callback for that class immediately after the object creation callback.
     */
    HRESULT ObjectAllocated(
                [in] ObjectID objectId,
                [in] ClassID classId);

    /*
     * The CLR calls ObjectsAllocatedByClass to notify the code
     * profiler about the number of objects of a particular class that were
     * allocated since the previous garbage collection. The classes and the
     * counts are passed in parallel arrays. (Classes for which no instances
     * have been allocated since the previous GC are omitted entirely.)
     *
     * NOTE: This callback will not report objects allocated in the large
     *       object heap.
     *
     * NOTE: The numbers here are only estimates. Use ObjectAllocated for
     *       exact counts.
     */
    HRESULT ObjectsAllocatedByClass(
                [in]                       ULONG   cClassCount,
                [in, size_is(cClassCount)] ClassID classIds[] ,
                [in, size_is(cClassCount)] ULONG   cObjects[] );

    /*
     * The CLR calls ObjectReferences to provide information
     * about objects in memory referenced by a given object.  This function
     * is called for each object remaining in the GC heap after a collection
     * has completed.  If the profiler returns an error from this callback,
     * the profiling services will discontinue invoking this callback until the
     * next GC.  This callback can be used in conjunction with the
     * RootReferences callback to create a complete object reference graph for
     * the runtime.
     *
     * NOTE: The CLR will ensure that each object reference is reported only
     * once by this function.
     *
     * NOTE: None of the objectIDs returned by ObjectReferences are valid during the callback
     * itself, as the GC may be in the middle of moving objects from old to new. Thus profilers
     * should not attempt to inspect objects during an ObjectReferences call. At
     * GarbageCollectionFinished, all objects have been moved to their new locations, and
     * inspection may be done.
     */
    HRESULT ObjectReferences(
                [in]                       ObjectID objectId,
                [in]                       ClassID  classId,
                [in]                       ULONG    cObjectRefs,
                [in, size_is(cObjectRefs)] ObjectID objectRefIds[] );

    /*
     * The CLR calls RootReferences with information about root
     * references after a garbage collection has occurred. Static object
     * references and references to objects on a stack are co-mingled in the
     * arrays.
     *
     * NOTE: It is possible to get NULL ObjectIDs in the RootReferences callback.
     * For example, all object references declared on the stack are treated as
     * roots by the GC, and will always be reported.
     *
     * NOTE: None of the objectIDs returned by RootReferences are valid during the callback
     * itself, as the GC may be in the middle of moving objects from old to new. Thus profilers
     * should not attempt to inspect objects during a RootReferences call. At
     * GarbageCollectionFinished, all objects have been moved to their new locations, and
     * inspection may be done.
     */
    HRESULT RootReferences(
                [in]                     ULONG    cRootRefs,
                [in, size_is(cRootRefs)] ObjectID rootRefIds[] );


    /*
     *
     * EXCEPTION EVENTS
     *
     */

    //
    // Exception creation
    //

    /*
     * The CLR calls ExceptionThrown to notify the code
     * profiler that an exception has been thrown.
     *
     * NOTE: This function is only called if the exception reaches
     *       managed code.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionThrown(
                [in] ObjectID thrownObjectId);

    //
    // Search phase
    //

    /*
     * The CLR calls ExceptionSearchFunctionEnter to notify the profiler
     * that the search phase of exception handling has entered a function.
     */
    HRESULT ExceptionSearchFunctionEnter(
                [in] FunctionID functionId);

    /*
     * The CLR calls ExceptionSearchFunctionLeave to notify the profiler
     * that the search phase of exception handling has left a function.
     */
    HRESULT ExceptionSearchFunctionLeave();

    /*
     * The CLR will call ExceptionSearchFilterEnter just before excecuting
     * a user filter.  The functionID is that of the function containing the filter.
     */
    HRESULT ExceptionSearchFilterEnter(
                [in] FunctionID functionId);

    /*
     * The CLR will call ExceptionSearchFilterLeave immediately after
     * executing a user filter.
     */
    HRESULT ExceptionSearchFilterLeave();

    /*
     * The CLR will call ExceptionSearchCatcherFound when the search
     * phase of exception handling has located a handler for the exception that
     * was thrown.
     */
    HRESULT ExceptionSearchCatcherFound(
                [in] FunctionID functionId);

    /*
     * DEPRECATED. It is the job of the unmanaged profiler to detect OS
     * handling of exceptions.
     */
    HRESULT ExceptionOSHandlerEnter(
                [in] UINT_PTR __unused);

    /*
     * DEPRECATED. It is the job of the unmanaged profiler to detect OS
     * handling of exceptions.
     */
    HRESULT ExceptionOSHandlerLeave(
                [in] UINT_PTR __unused);

    //
    // Unwind phase
    //

    /*
     * The CLR calls ExceptionUnwindFunctionEnter to notify the profiler
     * that the unwind phase of exception handling has entered a function.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionUnwindFunctionEnter(
                [in] FunctionID functionId);

    /*
     * The CLR calls ExceptionUnwindFunctionLeave to notify the profiler
     * that the unwind phase of exception handling has left a function.  The
     * function instance and it's stack data has now been removed from the stack.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionUnwindFunctionLeave();

    /*
     * The CLR calls ExceptionUnwindFinallyEnter to notify the profiler
     * that the unwind phase of exception is entering a finally clause contained
     * in the specified function.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionUnwindFinallyEnter(
                [in] FunctionID functionId);

    /*
     * The CLR calls ExceptionUnwindFinallyLeave to notify the profiler
     * that the unwind phase of exception is leaving a finally clause.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionUnwindFinallyLeave();

    /*
     * The CLR calls this function just before passing control to
     * the appropriate catch block.  Note that this is called only if the
     * catch point is in JIT'ed code.  An exception that is caught in
     * unmanaged code, or in the internal code of the CLR will
     * not generate this notification.  The ObjectID is passed again since
     * a GC could have moved the object since the ExceptionThrown
     * notification.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionCatcherEnter(
                [in] FunctionID functionId,
                [in] ObjectID   objectId);

    /*
     * The CLR calls ExceptionCatcherLeave when the runtime leaves
     * the catcher's code.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     */
    HRESULT ExceptionCatcherLeave();

    /*
     *  CLR<->COM interop vtable creation/destruction.
     */

    /*
     * The CLR calls this function when an CLR<->COM interop vtable
     * for a particular IID and for a particular class has been created.
     * This provides the ClassID of the class for which this vtable has been
     * created, the IID it implements, the start of the vtable and how many
     * slots are in it.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     *
     * NOTE: It is possible to receive a NULL GUID if the interface is
     *       internal only.
     */
    HRESULT COMClassicVTableCreated(
               [in] ClassID wrappedClassId,
               [in] REFGUID implementedIID,
               [in] void    *pVTable,
               [in] ULONG   cSlots);

    /*
     * The CLR calls this function when a CLR<->COM interop vtable is
     * being destroyed.  Provided are the ClassID, IID and vtable pointer for
     * the destroyed vtable.
     *
     * NOTE: The profiler should not block here, since the stack may not be in a
     *       GC-friendly state and so preemptive GC cannot be enabled.  If the
     *       profiler blocks here and a GC is attempted, the runtime will block
     *       until this callback returns.  Also, the profiler may NOT call into
     *       managed code or in any way cause a managed memory allocation.
     *
     * NOTE: It is possible to receive a NULL GUID if the interface is
     *       internal only.
     *
     * NOTE: This callback is likely never to occur, since the destruction of
     *       vtables occurs very close to Shutdown.
     */
    HRESULT COMClassicVTableDestroyed(
               [in] ClassID wrappedClassId,
               [in] REFGUID implementedIID,
               [in] void    *pVTable);

    /*
     * DEPRECATED. These callbacks are no longer delivered.
     */
    HRESULT ExceptionCLRCatcherFound();

    HRESULT ExceptionCLRCatcherExecute();
}

/*
 * COR_PRF_GC_ROOT_KIND describes the kind of GC root exposed by
 * the RootReferences2 callback.
 */

typedef enum
{
    COR_PRF_GC_ROOT_STACK = 1,        // Variables on the stack
    COR_PRF_GC_ROOT_FINALIZER = 2,    // Entry in the finalizer queue
    COR_PRF_GC_ROOT_HANDLE = 3,        // GC Handle
    COR_PRF_GC_ROOT_OTHER = 0        //Misc. roots
}   COR_PRF_GC_ROOT_KIND;


/*
 * COR_PRF_GC_ROOT_FLAGS describes properties of a GC root
 * exposed by the RootReferences callback.
 */

typedef enum
{
    COR_PRF_GC_ROOT_PINNING = 0x1,    // Prevents GC from moving the object
    COR_PRF_GC_ROOT_WEAKREF = 0x2,    // Does not prevent collection
    COR_PRF_GC_ROOT_INTERIOR = 0x4,   // Refers to a field of the object rather than the object itself
    COR_PRF_GC_ROOT_REFCOUNTED = 0x8, // Whether it prevents collection depends on a refcount - if not,
                                      // COR_PRF_GC_ROOT_WEAKREF will be set also
}   COR_PRF_GC_ROOT_FLAGS;


/*
 * COR_PRF_FINALIZER_FLAGS is used by FinalizableObjectQueued to describe
 * the finalizer for the object.
 */

typedef enum
{
    COR_PRF_FINALIZER_CRITICAL = 0x1    // Critical finalizer
}   COR_PRF_FINALIZER_FLAGS;


/*
 * COR_PRF_GC_GENERATION contains the numbers used to represent each GC generation
 * in the GetGenerationBounds and GetObjectGeneration functions.
 */

typedef enum
{
    COR_PRF_GC_GEN_0 = 0,
    COR_PRF_GC_GEN_1 = 1,
    COR_PRF_GC_GEN_2 = 2,
    COR_PRF_GC_LARGE_OBJECT_HEAP = 3,
    COR_PRF_GC_PINNED_OBJECT_HEAP= 4
}   COR_PRF_GC_GENERATION;


/*
 * COR_PRF_GC_GENERATION_RANGE describes a range of memory in the GetGenerationBounds and GetObjectGeneration functions.
 * Note that the rangeLength member is only guaranteed to be accurate if GetGenerationBounds or GetObjectGeneration are
 * called from a GarbageCollectionStarted or GarbageCollectionFinished notification
 */
typedef struct COR_PRF_GC_GENERATION_RANGE
{
    COR_PRF_GC_GENERATION   generation;             // what generation the range of memory belongs to
    ObjectID                rangeStart;             // the start of the range
    UINT_PTR                rangeLength;            // the used length of the range
    UINT_PTR                rangeLengthReserved;    // the amount of memory reserved for the range (including rangeLength)

}   COR_PRF_GC_GENERATION_RANGE;


/*
 * COR_PRF_NONGC_GENERATION_RANGE describes a range of memory in the GetNonGCHeapBounds function.
 */
typedef struct COR_PRF_NONGC_HEAP_RANGE
{
    ObjectID                rangeStart;             // the start of the range
    UINT_PTR                rangeLength;            // the used length of the range
    UINT_PTR                rangeLengthReserved;    // the amount of memory reserved for the range (including rangeLength)

}   COR_PRF_NONGC_HEAP_RANGE;


/*
 * COR_PRF_CLAUSE_TYPE defines the various clause codes for the EX clauses
 */
typedef enum
{
    COR_PRF_CLAUSE_NONE = 0,  // not a real clause (only used in error cases)
    COR_PRF_CLAUSE_FILTER = 1,
    COR_PRF_CLAUSE_CATCH = 2,
    COR_PRF_CLAUSE_FINALLY = 3,
}   COR_PRF_CLAUSE_TYPE;

/*
 * COR_PRF_EX_CLAUSE_INFO identifies a specific exception clause instance and its associated frame.
 * When an exception notification is received, GetNotifiedExceptionClauseInfo() may be used to get the
 * native address and frame information for the exception clause (catch/finally/filter) that is
 * about to be run (ExceptionCatchEnter, ExceptionUnwindFinallyEnter, ExceptionFilterEnter) or has just
 * been run (ExceptionCatchLeave, ExceptionUnwindFinallyLeave, ExceptionFilterLeave).
 */
typedef struct COR_PRF_EX_CLAUSE_INFO
{
    COR_PRF_CLAUSE_TYPE  clauseType; // the type of clause we just entered or left
    UINT_PTR  programCounter;   // the native entry point of the clause handler (e.g. EIP)
    UINT_PTR framePointer;    // the logical frame pointer (e.g. EBP) for that clause handler
    UINT_PTR shadowStackPointer;  // the shadow stack pointer (IA64 only, BSP)
}   COR_PRF_EX_CLAUSE_INFO;

/*
 * COR_PRF_GC_REASON describes the reason for a given GC.
 */
typedef enum
{
    COR_PRF_GC_INDUCED = 1,     // Induced by GC.Collect
    COR_PRF_GC_OTHER = 0        // Anything else
}   COR_PRF_GC_REASON;

/*
 * Bits from COR_PRF_MODULE_FLAGS are returned to the profiler in GetModuleInfo2's
 * pdwModuleFlags output parameter. Some combinations of 2 or more flags are possible,
 * though not all combinations are possible.
 */
typedef enum
{
    // The module was loaded from disk
    COR_PRF_MODULE_DISK             = 0x00000001,

    // The module had been generated via NGEN
    COR_PRF_MODULE_NGEN             = 0x00000002,

    // The module was created via methods in the Reflection.Emit namespace
    COR_PRF_MODULE_DYNAMIC          = 0x00000004,

    // The module's lifetime is managed by the garbage collector.
    COR_PRF_MODULE_COLLECTIBLE      = 0x00000008,

    // The module contains no metadata and is used strictly as a resource.  The managed
    // equivalent of this bit is the System.Reflection.Module.IsResource() method.
    COR_PRF_MODULE_RESOURCE         = 0x00000010,

    // The module's layout in memory is flat, as opposed to mapped. For modules that have
    // this bit set, profilers that directly read information out of the PE header will
    // need to be careful when interpreting RVAs present in the PE header.
    COR_PRF_MODULE_FLAT_LAYOUT      = 0x00000020,

    // The Windows Runtime content type flag is set in the metadata for this module's
    // assembly
    COR_PRF_MODULE_WINDOWS_RUNTIME  = 0x00000040,
}   COR_PRF_MODULE_FLAGS;
/*
 * The ICorProfilerCallback2 interface is used by the CLR to notify a
 * code profiler when events have occurred that the code profiler has registered
 * an in interest in receiving.  These are new callbacks implemented in V2.0
 * of the runtime.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 */

[
    object,
    uuid(8A8CC829-CCF2-49fe-BBAE-0F022228071A),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback2 : ICorProfilerCallback
{

    /*
     *
     * THREAD EVENTS
     *
     */

    /*
     * The CLR calls ThreadNameChanged to notify the code profiler
     * that a thread's name has changed.
     *
     * name is not NULL terminated.
     *
     */
    HRESULT ThreadNameChanged(
                [in] ThreadID threadId,
                [in] ULONG cchName,
                [in, annotation("_In_reads_opt_(cchName)")] WCHAR name[]);

    /*
     *
     * GARBAGE COLLECTION EVENTS
     *
     */

    /*
     * The CLR calls GarbageCollectionStarted before beginning a
     * garbage collection. All GC callbacks pertaining to this
     * collection will occur between the GarbageCollectionStarted
     * callback and the corresponding GarbageCollectionFinished
     * callback. Corresponding GarbageCollectionStarted and
     * GarbageCollectionFinished callbacks need not occur on the same thread.
     *
     *          cGenerations indicates the total number of entries in
     *                the generationCollected array
     *          generationCollected is an array of booleans, indexed
     *                by COR_PRF_GC_GENERATIONS, indicating which
     *                generations are being collected in this collection
     *          reason indicates whether this GC was induced
     *                by the application calling GC.Collect().
     *
     * NOTE: It is safe to inspect objects in their original locations
     * during this callback. The GC will begin moving objects after
     * the profiler returns from this callback. Therefore, after
     * returning, the profiler should consider all ObjectIDs to be invalid
     * until it receives a GarbageCollectionFinished callback.
     */
    HRESULT GarbageCollectionStarted(
                [in] int cGenerations,
                [in, size_is(cGenerations)] BOOL generationCollected[],
                [in] COR_PRF_GC_REASON reason);

    /*
     * The CLR calls SurvivingReferences with information about
     * object references that survived a garbage collection.
     *
     * Generally, the CLR calls SurvivingReferences for non-compacting garbage collections.
     * For compacting garbage collections, MovedReferences is called instead.
     *
     * The exception to this rule is that the CLR always calls SurvivingReferences for objects
     * in the large object heap, which is not compacted.
     *
     * Multiple calls to SurvivingReferences may be received during a particular
     * garbage collection, due to limited internal buffering, multiple threads reporting
     * in the case of server gc, and other reasons.
     * In the case of multiple calls, the information is cumulative - all of the references
     * reported in any SurvivingReferences call survive this collection.
     *
     * cSurvivingObjectIDRanges is a count of the number of ObjectID ranges that
     *      survived.
     * objectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values that survived the collection.
     * cObjectIDRangeLength is an array of elements, each of which states the
     *      size of the surviving ObjectID value range.
     *
     * The last two arguments of this function are parallel arrays.
     *
     * In other words, if an ObjectID value lies within the range
     *      objectIDRangeStart[i] <= ObjectID < objectIDRangeStart[i] + cObjectIDRangeLength[i]
     * for 0 <= i < cMovedObjectIDRanges, then the ObjectID has survived the collection
     *
     * THIS CALLBACK IS OBSOLETE. It reports ranges for objects >4GB as UINT32_MAX
     * on 64-bit platforms. Use ICorProfilerCallback4::SurvivingReferences2 instead.
     */
    HRESULT SurvivingReferences(
                [in]                                    ULONG    cSurvivingObjectIDRanges,
                [in, size_is(cSurvivingObjectIDRanges)] ObjectID objectIDRangeStart[] ,
                [in, size_is(cSurvivingObjectIDRanges)] ULONG    cObjectIDRangeLength[] );
    /*
     * The CLR calls GarbageCollectionFinished after a garbage
     * collection has completed and all GC callbacks have been
     * issued for it.
     *
     * NOTE: It is now safe to inspect objects in their
     * final locations.
     */
    HRESULT GarbageCollectionFinished();

    /*
     * The CLR calls FinalizeableObjectQueued to notify the code profiler
     * that an object with a finalizer (destructor in C# parlance) has
     * just been queued to the finalizer thread for execution of its
     * Finalize method.
     *
     * finalizerFlags describes aspects of the finalizer, and takes its
     *     value from COR_PRF_FINALIZER_FLAGS.
     *
     */

    HRESULT FinalizeableObjectQueued(
                [in] DWORD finalizerFlags,
                [in] ObjectID objectID);

    /*
     * The CLR calls RootReferences2 with information about root
     * references after a garbage collection has occurred.
     * For each root reference in rootRefIds, there is information in
     * rootClassifications to classify it. Depending on the classification,
     * rootsIds may contain additional information. The information in
     * rootKinds and rootFlags contains information about the location and
     * properties of the reference.
     *
     * If the profiler implements ICorProfilerCallback2, both
     * ICorProfilerCallback::RootReferences and ICorProfilerCallback2::RootReferences2
     * are called. As the information passed to RootReferences2 is a superset
     * of the one passed to RootReferences, profilers will normally implement
     * one or the other, but not both.
     *
     * If the root kind is STACK, the ID is the FunctionID of the
     * function containing the variable. If the FunctionID is 0, the function
     * is an unnamed function internal to the CLR.
     *
     * If the root kind is HANDLE, the ID is the GCHandleID.
     *
     * For the other root kinds, the ID is an opaque value and should
     * be ignored.
     *
     * It's possible for entries in rootRefIds to be 0 - this just
     * implies the corresponding root reference was null and thus did not
     * refer to an object on the managed heap.
     *
     * NOTE: None of the objectIDs returned by RootReferences2 are valid during the callback
     * itself, as the GC may be in the middle of moving objects from old to new. Thus profilers
     * should not attempt to inspect objects during a RootReferences2 call. At
     * GarbageCollectionFinished, all objects have been moved to their new locations, and
     * inspection may be done.
     */

    HRESULT RootReferences2(
                [in]                     ULONG    cRootRefs,
                [in, size_is(cRootRefs)] ObjectID rootRefIds[],
                [in, size_is(cRootRefs)] COR_PRF_GC_ROOT_KIND rootKinds[],
                [in, size_is(cRootRefs)] COR_PRF_GC_ROOT_FLAGS rootFlags[],
                [in, size_is(cRootRefs)] UINT_PTR rootIds[]);

    /*
     * The CLR calls HandleCreated when a gc handle has been created.
     *
     */

    HRESULT HandleCreated(
                [in] GCHandleID handleId,
                [in] ObjectID initialObjectId);

    /*
     * The CLR calls HandleDestroyed when a gc handle has been destroyed.
     *
     */

    HRESULT HandleDestroyed(
                [in] GCHandleID handleId);
}

[
    object,
    uuid(4FD2ED52-7731-4b8d-9469-03D2CC3086C5),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback3 : ICorProfilerCallback2
{
    HRESULT InitializeForAttach(
                [in] IUnknown * pCorProfilerInfoUnk,
                [in] void * pvClientData,
                [in] UINT cbClientData);

    HRESULT ProfilerAttachComplete();

    HRESULT ProfilerDetachSucceeded();
};

[
    object,
    uuid(7B63B2E3-107D-4d48-B2F6-F61E229470D2),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback4 : ICorProfilerCallback3
{
    /*
     * Similar to JITCompilationStarted, except called when rejitting a method
     */
    HRESULT ReJITCompilationStarted(
                [in] FunctionID functionId,
                [in] ReJITID rejitId,
                [in] BOOL fIsSafeToBlock);

    /*
     * This is called exactly once per method (which may represent more than
     * one function id), to allow the code profiler to set alternate code
     * generation flags or a new method body.
     */
    HRESULT GetReJITParameters(
                [in] ModuleID moduleId,
                [in] mdMethodDef methodId,
                [in] ICorProfilerFunctionControl *pFunctionControl);

    /*
     * Similar to JITCompilationFinished, except called when rejitting a method
     */
    HRESULT ReJITCompilationFinished(
                [in] FunctionID functionId,
                [in] ReJITID rejitId,
                [in] HRESULT hrStatus,
                [in] BOOL fIsSafeToBlock);

    /*
     * This is called to report an error encountered while processing a ReJIT request.
     * This may either be called from within the RequestReJIT call itself, or called after
     * RequestReJIT returns, if the error was encountered later on.
     */
    HRESULT ReJITError(
                [in] ModuleID moduleId,
                [in] mdMethodDef methodId,
                [in] FunctionID functionId,
                [in] HRESULT hrStatus);

    /*
     * The CLR calls MovedReferences with information about
     * object references that moved as a result of garbage collection.
     *
     * cMovedObjectIDRanges is a count of the number of ObjectID ranges that
     *      were moved.
     * oldObjectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values before being moved.
     * newObjectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values after being moved.
     * cObjectIDRangeLength is an array of elements, each of which states the
     *      size of the moved ObjectID value range.
     *
     * The last three arguments of this function are parallel arrays.
     *
     * In other words, if an ObjectID value lies within the range
     *      oldObjectIDRangeStart[i] <= ObjectID < oldObjectIDRangeStart[i] + cObjectIDRangeLength[i]
     * for 0 <= i < cMovedObjectIDRanges, then the ObjectID value has changed to
     *      ObjectID - oldObjectIDRangeStart[i] + newObjectIDRangeStart[i]
     *
     * NOTE: None of the objectIDs returned by MovedReferences are valid during the callback
     * itself, as the GC may be in the middle of moving objects from old to new. Thus profilers
     * should not attempt to inspect objects during a MovedReferences call. At
     * GarbageCollectionFinished, all objects have been moved to their new locations, and
     * inspection may be done.
     *
     * If the profiler implements ICorProfilerCallback4, ICorProfilerCallback4::MovedReferences2
     * is called first and ICorProfilerCallback::MovedReferences is called second but only if
     * ICorProfilerCallback4::MovedReferences2 returned success. Profilers can return failure
     * from ICorProfilerCallback4::MovedReferences2 to save some chattiness.
     */
    HRESULT MovedReferences2(
                [in]                                ULONG    cMovedObjectIDRanges,
                [in, size_is(cMovedObjectIDRanges)] ObjectID oldObjectIDRangeStart[] ,
                [in, size_is(cMovedObjectIDRanges)] ObjectID newObjectIDRangeStart[] ,
                [in, size_is(cMovedObjectIDRanges)] SIZE_T   cObjectIDRangeLength[] );

    /*
     * The CLR calls SurvivingReferences with information about
     * object references that survived a garbage collection.
     *
     * Generally, the CLR calls SurvivingReferences for non-compacting garbage collections.
     * For compacting garbage collections, MovedReferences is called instead.
     *
     * The exception to this rule is that the CLR always calls SurvivingReferences for objects
     * in the large object heap, which is not compacted.
     *
     * Multiple calls to SurvivingReferences may be received during a particular
     * garbage collection, due to limited internal buffering, multiple threads reporting
     * in the case of server gc, and other reasons.
     * In the case of multiple calls, the information is cumulative - all of the references
     * reported in any SurvivingReferences call survive this collection.
     *
     * cSurvivingObjectIDRanges is a count of the number of ObjectID ranges that
     *      survived.
     * objectIDRangeStart is an array of elements, each of which is the start
     *      value of a range of ObjectID values that survived the collection.
     * cObjectIDRangeLength is an array of elements, each of which states the
     *      size of the surviving ObjectID value range.
     *
     * The last two arguments of this function are parallel arrays.
     *
     * In other words, if an ObjectID value lies within the range
     *      objectIDRangeStart[i] <= ObjectID < objectIDRangeStart[i] + cObjectIDRangeLength[i]
     * for 0 <= i < cMovedObjectIDRanges, then the ObjectID has survived the collection
     *
     * If the profiler implements ICorProfilerCallback4, ICorProfilerCallback4::SurvivingReferences2
     * is called first and ICorProfilerCallback2::SurvivingReferences is called second but only if
     * ICorProfilerCallback4::SurvivingReferences2 returned success. Profilers can return failure
     * from ICorProfilerCallback4::SurvivingReferences2 to save some chattiness.
     */
    HRESULT SurvivingReferences2(
                [in]                                    ULONG    cSurvivingObjectIDRanges,
                [in, size_is(cSurvivingObjectIDRanges)] ObjectID objectIDRangeStart[] ,
                [in, size_is(cSurvivingObjectIDRanges)] SIZE_T   cObjectIDRangeLength[] );

};


[
    object,
    uuid(8DFBA405-8C9F-45F8-BFFA-83B14CEF78B5),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback5 : ICorProfilerCallback4
{
    /*
     * The CLR calls ConditionalWeakTableElementReferences with information
     * about dependent handles after a garbage collection has occurred.
     *
     * For each root ID in rootIds, keyRefIds will contain the ObjectID for
     * the primary element in the dependent handle pair, and valueRefIds will
     * contain the ObjectID for the secondary element (keyRefIds[i] keeps
     * valueRefIds[i] alive).
     *
     * NOTE: None of the objectIDs returned by ConditionalWeakTableElementReferences
     * are valid during the callback itself, as the GC may be in the middle
     * of moving objects from old to new. Thus profilers should not attempt
     * to inspect objects during a ConditionalWeakTableElementReferences call.
     * At GarbageCollectionFinished, all objects have been moved to their new
     * locations, and inspection may be done.
     */
    HRESULT ConditionalWeakTableElementReferences(
                [in]                     ULONG    cRootRefs,
                [in, size_is(cRootRefs)] ObjectID keyRefIds[],
                [in, size_is(cRootRefs)] ObjectID valueRefIds[],
                [in, size_is(cRootRefs)] GCHandleID rootIds[]);
};


[
    object,
    uuid(FC13DF4B-4448-4F4F-950C-BA8D19D00C36),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback6 : ICorProfilerCallback5
{
    // CORECLR DEPRECATION WARNING: This callback does not occur on coreclr.
    // Controlled by the COR_PRF_HIGH_ADD_ASSEMBLY_REFERENCES event mask flag.
    // Notifies the profiler of a very early stage in the loading of an Assembly, where the CLR
    // performs an assembly reference closure walk.  This is useful ONLY if the profiler will need
    // to modify the metadata of the Assembly to add AssemblyRefs (later, in ModuleLoadFinished).  In
    // such a case, the profiler should implement this callback as well, to inform the CLR that assembly references
    // will be added once the module has loaded.  This is useful to ensure that assembly sharing decisions
    // made by the CLR during this early stage remain valid even though the profiler plans to modify the metadata
    // assembly references later on.  This can be used to avoid some instances where profiler metadata
    // modifications can cause the SECURITY_E_INCOMPATIBLE_SHARE error to be thrown.
    //
    // The profiler uses the ICorProfilerAssemblyReferenceProvider provided to add assembly references
    // to the CLR assembly reference closure walker.  The ICorProfilerAssemblyReferenceProvider
    // should only be used from within this callback. The profiler will still need to explicitly add assembly
    // references via IMetaDataAssemblyEmit, from within the ModuleLoadFinished callback for the referencing assembly,
    // even though the profiler implements this GetAssemblyReferences callback.  This callback does not result in
    // modified metadata; only in a modified assembly reference closure walk.
    //
    // The profiler should be prepared to receive duplicate calls to this callback for the same assembly,
    // and should respond identically for each such duplicate call (by making the same set of
    // ICorProfilerAssemblyReferenceProvider::AddAssemblyReference calls).
    HRESULT GetAssemblyReferences(
        [in, string] const WCHAR * wszAssemblyPath,
        [in] ICorProfilerAssemblyReferenceProvider * pAsmRefProvider);
};


[
    object,
    uuid(F76A2DBA-1D52-4539-866C-2AA518F9EFC3),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback7 : ICorProfilerCallback6
{
    // This event is triggered whenever the symbol stream associated with an
    // in-memory module is updated. Even when symbols are provided up-front in
    // a call to the managed API Assembly.Load(byte[], byte[], ...) the runtime
    // may not actually associate the symbolic data with the module until after
    // the ModuleLoadFinished callback has occurred. This event provides a later
    // opportunity to collect symbols for such modules.
    //
    // This event is controlled by the COR_PRF_HIGH_IN_MEMORY_SYMBOLS_UPDATED
    // event mask flag.
    //
    // Note: This event is not currently raised for symbols implicitly created or
    // modified via Reflection.Emit APIs.
    HRESULT ModuleInMemorySymbolsUpdated(ModuleID moduleId);
}


[
    object,
    uuid(5BED9B15-C079-4D47-BFE2-215A140C07E0),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback8 : ICorProfilerCallback7
{
    // This event is triggered whenever a dynamic method is jit compiled.
    // These include various IL Stubs and LCG Methods.
    // The goal is to provide profiler writers with enough information to identify
    // it to users as beyond unknown code addresses.
    // Note: FunctionID's provided here cannot be used to resolve to their metadata
    //       tokens since dynamic methods have no metadata.
    //
    // Documentation Note: pILHeader is only valid during the callback

    HRESULT DynamicMethodJITCompilationStarted(
        [in] FunctionID functionId,
        [in] BOOL       fIsSafeToBlock,
        [in] LPCBYTE    pILHeader,
        [in] ULONG      cbILHeader);

    HRESULT DynamicMethodJITCompilationFinished(
        [in] FunctionID functionId,
        [in] HRESULT    hrStatus,
        [in] BOOL       fIsSafeToBlock);
}

[
    object,
    uuid(27583EC3-C8F5-482F-8052-194B8CE4705A),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback9 : ICorProfilerCallback8
{
    // This event is triggered whenever a dynamic method is garbage collected
    // and subsequently unloaded.

    HRESULT DynamicMethodUnloaded([in] FunctionID functionId);
}

[
    object,
    uuid(CEC5B60E-C69C-495F-87F6-84D28EE16FFB),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback10 : ICorProfilerCallback9
{
    // This event is triggered whenever an EventPipe event is configured to be delivered.
    //
    // Documentation Note: All pointers are only valid during the callback

    HRESULT EventPipeEventDelivered(
        [in] EVENTPIPE_PROVIDER provider,
        [in] DWORD eventId,
        [in] DWORD eventVersion,
        [in] ULONG cbMetadataBlob,
        [in, size_is(cbMetadataBlob)] LPCBYTE metadataBlob,
        [in] ULONG cbEventData,
        [in, size_is(cbEventData)] LPCBYTE eventData,
        [in] LPCGUID pActivityId,
        [in] LPCGUID pRelatedActivityId,
        [in] ThreadID eventThread,
        [in] ULONG numStackFrames,
        [in, length_is(numStackFrames)] UINT_PTR stackFrames[]);

    HRESULT EventPipeProviderCreated([in] EVENTPIPE_PROVIDER provider);
}

[
    object,
    uuid(42350846-AAED-47F7-B128-FD0C98881CDE),
    pointer_default(unique),
    local
]
interface ICorProfilerCallback11 : ICorProfilerCallback10
{
    HRESULT LoadAsNotificationOnly(BOOL *pbNotificationOnly);
}

/*
 * COR_PRF_CODEGEN_FLAGS controls various flags and hooks for a specific
 * method.  A combination of COR_PRF_CODEGEN_FLAGS is provided by the
 * profiler in its call to ICorProfilerFunctionControl::SetCodegenFlags()
 * when rejitting a method.
 */
typedef enum
{
    COR_PRF_CODEGEN_DISABLE_INLINING =          0x0001,
    COR_PRF_CODEGEN_DISABLE_ALL_OPTIMIZATIONS = 0x0002,
    COR_PRF_CODEGEN_DEBUG_INFO =                0x0003,
} COR_PRF_CODEGEN_FLAGS;

/*
 * The CLR implements the ICorProfilerInfo interface. This interface is
 * used by a code profiler to communicate with the CLR to control event
 * monitoring and request information. The CLR passes an
 * ICorProfilerInfo interface to each code profiler during initialization.
 *
 * A code profiler can call methods on the ICorProfilerInfo interface to get
 * information about managed code being executed under the control of the CLR
 *
 * The ICorProfilerInfo interface implemented by the CLR uses the free
 * threaded model.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 *
 */

[
    object,
    uuid(28B5557D-3F3F-48b4-90B2-5F9EEA2F6C48),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo : IUnknown
{
    /*
     * The code profiler calls GetClassFromObject to obtain the ClassID of an
     * object given its ObjectID.
     */
    HRESULT GetClassFromObject(
                [in]  ObjectID objectId,
                [out] ClassID *pClassId);

    /*
     * V2 MIGRATION WARNING - DOES NOT WORK FOR GENERIC TYPES
     *
     * This function will be removed in a future release, so
     * use GetClassFromTokenAndTypeArgs for all types.
     */
    HRESULT GetClassFromToken(
                [in]  ModuleID  moduleId,
                [in]  mdTypeDef typeDef,
                [out] ClassID   *pClassId);

    /*
     * V2 MIGRATION WARNING - WILL NOT WORK WITH .NET FRAMEWORK
     * FUNCTIONS
     *
     * This function will be removed in a future release; use GetCodeInfo2
     * in all cases.
     */
    HRESULT GetCodeInfo(
                [in]  FunctionID functionId,
                [out] LPCBYTE    *pStart,
                [out] ULONG      *pcSize);

    /*
     * RECOMMENDATION: USE GetEventMask2 INSTEAD.  WHILE THIS METHOD CONTINUES TO
     * TO WORK, GetEventMask2 PROVIDES MORE FUNCTIONALITY.
     *
     * The code profiler calls GetEventMask to obtain the current event
     * categories for which it is to receive event notifications from the COM+
     * Runtime.
     */
    HRESULT GetEventMask(
                [out] DWORD *pdwEvents);

    /*
     * The code profiler calls GetFunctionFromIP to map an instruction pointer
     * in managed code to a FunctionID.
     */
    HRESULT GetFunctionFromIP(
                [in]  LPCBYTE    ip,
                [out] FunctionID *pFunctionId);

    /*
     * V2 MIGRATION WARNING - WILL NOT WORK FOR GENERIC FUNCTIONS OR
     * FUNCTIONS ON GENERIC TYPES
     *
     * This function will be removed in a future release, so use
     * GetFunctionFromTokenAndTypeArgs for all functions.
     */
    HRESULT GetFunctionFromToken(
                [in]  ModuleID   moduleId,
                [in]  mdToken    token,
                [out] FunctionID *pFunctionId);

    /*
     * The code profiler calls GetHandleFromThread to map a ThreadID to a Win32
     * thread handle. The profiler must call DuplicateHandle on the handle
     * before using it.
     */
    HRESULT GetHandleFromThread(
                [in]  ThreadID threadId,
                [out] HANDLE  *phThread);

    /*
     * The code profiler calls GetObjectSize to obtain the size of an object.
     * Note that types like arrays and strings may have a different size for each object.
     *
     * THIS API IS OBSOLETE. It does not work for objects >4GB on 64-bit platforms.
     * Use ICorProfilerInfo4::GetObjectSize2 instead.
     */
    HRESULT GetObjectSize(
                [in]  ObjectID objectId,
                [out] ULONG  *pcSize);

    /*
     * This will return S_OK if the ClassID provided is an array class, and will
     * fill out the information for any non-null out params.  S_FALSE will be
     * returned if the ClassID is not an array.
     *
     * classId       : the ClassID to return information about
     * pBaseElemType : the array's base element type
     * pBaseClassId  : the base ClassID if the element type == ELEMENT_TYPE_CLASS
     * pcRank        : the number of dimensions of the array
     */
    HRESULT IsArrayClass(
                [in]  ClassID        classId,
                [out] CorElementType *pBaseElemType,
                [out] ClassID        *pBaseClassId,
                [out] ULONG          *pcRank);

    /*
     * The code profiler calls GetThreadInfo to obtain the current Win32 thread ID for
     * the specified thread.
     */
    HRESULT GetThreadInfo(
                [in]  ThreadID threadId,
                [out] DWORD    *pdwWin32ThreadId);

    /*
     * The code profiler calls GetCurrentThreadID to get the managed thread ID
     * for the current thread.
     *
     * NOTE: GetCurrentThreadID may return CORPROF_E_NOT_MANAGED_THREAD if the
     * current thread is an internal runtime thread, and the returned value of
     * pThreadId will be NULL.
     */
    HRESULT GetCurrentThreadID(
                [out] ThreadID *pThreadId);

    /*
     * V2 MIGRATION NOTE - More information is available for generic types
     * from GetClassIDInfo2.
     *
     * Returns the parent module a class is defined in, along with the
     * metadata token for the class.  One can call GetModuleMetaData
     * to obtain the metadata interface for a given module.  The token
     * can then be used to access the metadata for this class.
     */
    HRESULT GetClassIDInfo(
                [in]  ClassID   classId,
                [out] ModuleID  *pModuleId,
                [out] mdTypeDef *pTypeDefToken);

    /*
     * Return the parent class for a given function.  Also return the metadata
     * token which can be used to read the metadata.
     *
     * V2 MIGRATION WARNING - LESS INFORMATION FOR GENERIC CLASSES
     * The ClassID of a function on a generic class may not be obtainable without
     * more context about the use of the function. In this case, *pClassId will be 0;
     * try using GetFunctionInfo2 with a COR_PRF_FRAME_INFO to give more context.
     */
    HRESULT GetFunctionInfo(
                [in]  FunctionID functionId,
                [out] ClassID    *pClassId,
                [out] ModuleID   *pModuleId,
                [out] mdToken    *pToken);

    /*
     * RECOMMENDATION: USE SetEventMask2 INSTEAD.  WHILE THIS METHOD CONTINUES TO
     * TO WORK, SetEventMask2 PROVIDES MORE FUNCTIONALITY.
     *
     * The code profiler calls SetEventMask to set the event categories for
     * which it is set to receive notification from the CLR.
     */
    HRESULT SetEventMask(
                [in] DWORD dwEvents);

    /*
     * The code profiler calls SetFunctionHooks to specify handlers
     * for FunctionEnter, FunctionLeave, and FunctionTailcall.
     *
     * Note that only one set of callbacks may be active at a time. Thus,
     * if a profiler calls SetEnterLeaveFunctionHooks, SetEnterLeaveFunctionHooks2
     * and SetEnterLeaveFunctionHooks3(WithInfo), then SetEnterLeaveFunctionHooks3(WithInfo)
     * wins.  SetEnterLeaveFunctionHooks2 takes precedence over SetEnterLeaveFunctionHooks
     * when both are set.
     *
     * Each function pointer may be null to disable that callback.
     *
     * SetEnterLeaveFunctionHooks may only be called from the
     * profiler's Initialize() callback.
     */
    HRESULT SetEnterLeaveFunctionHooks(
                [in] FunctionEnter    *pFuncEnter,
                [in] FunctionLeave    *pFuncLeave,
                [in] FunctionTailcall *pFuncTailcall);

    /*
     * This is used for mapping FunctionIDs to alternative values that will be
     * passed to the callbacks
     */
    HRESULT SetFunctionIDMapper(
                [in] FunctionIDMapper *pFunc);

    /*
     * For a given function, retrieve the token value and an instance of the
     * meta data interface which can be used against this token.
     */
    HRESULT GetTokenAndMetaDataFromFunction(
                [in]  FunctionID functionId,
                [in]  REFIID     riid,
                [out] IUnknown   **ppImport,
                [out] mdToken    *pToken);

    /*
     * Retrieve information about a given module.
     *
     * When the module is loaded from disk, the name returned will be the filename;
     * otherwise, the name will be the name from the metadata Module table (i.e.,
     * the same as the managed System.Reflection.Module.ScopeName).
     *
     * NOTE: While this function may be called as soon as the moduleId is alive,
     * the AssemblyID of the containing assembly will not be available until the
     * ModuleAttachedToAssembly callback.
     *
     * NOTE: More information is available by using ICorProfilerInfo3::GetModuleInfo2 instead.
     */
    HRESULT GetModuleInfo(
                [in]  ModuleID   moduleId,
                [out] LPCBYTE    *ppBaseLoadAddress,
                [in]  ULONG      cchName,
                [out] ULONG      *pcchName,
                [out, annotation("_Out_writes_to_(cchName, *pcchName)")]
                      WCHAR      szName[] ,
                [out] AssemblyID *pAssemblyId);

    /*
     * Get a metadata interface instance which maps to the given module.
     * One may ask for the metadata to be opened in read+write mode, but
     * this will result in slower metadata execution of the program, because
     * changes made to the metadata cannot be optimized as they were from
     * the compiler.
     *
     * NOTE: Some modules (such as resource modules) have no metadata. In
     * those cases, GetModuleMetaData will return S_FALSE, and a NULL
     * IUnknown.
     *
     * NOTE: the only values valid for dwOpenFlags are ofRead and ofWrite.
     */
    HRESULT GetModuleMetaData(
                [in]  ModuleID moduleId,
                [in]  DWORD    dwOpenFlags,
                [in]  REFIID   riid,
                [out] IUnknown **ppOut);

    /*
     * Retrieve a pointer to the body of a method starting at it's header.
     * A method is scoped by the module it lives in.  Because this function
     * is designed to give a tool access to IL before it has been loaded
     * by the Runtime, it uses the metadata token of the method to find
     * the instance desired.
     *
     * GetILFunctionBody can return CORPROF_E_FUNCTION_NOT_IL if the methodId
     * points to a method without any IL (such as an abstract method, or a
     * P/Invoke method).
     */
    HRESULT GetILFunctionBody(
                [in]  ModuleID    moduleId,
                [in]  mdMethodDef methodId,
                [out] LPCBYTE     *ppMethodHeader,
                [out] ULONG       *pcbMethodSize);

    /*
     * IL method bodies must be located as RVA's to the loaded module, which
     * means they come after the module within 4 gb.  In order to make it
     * easier for a tool to swap out the body of a method, this allocator
     * will ensure memory is allocated within that range.
     */
    HRESULT GetILFunctionBodyAllocator(
                [in]  ModuleID      moduleId,
                [out] IMethodMalloc **ppMalloc);

    /*
     * Replaces the method body for a function in a module.  This will replace
     * the RVA of the method in the metadata to point to this new method body,
     * and adjust any internal data structures as required.  This function can
     * only be called on those methods which have never been compiled by a JITTER.
     * Please use the GetILFunctionAllocator to allocate space for the new method to
     * ensure the buffer is compatible.
     */
    HRESULT SetILFunctionBody(
                [in] ModuleID    moduleId,
                [in] mdMethodDef methodid,
                [in] LPCBYTE     pbNewILMethodHeader);

    /*
     * Retrieve app domain information given its id.
     */
    HRESULT GetAppDomainInfo(
                [in]  AppDomainID appDomainId,
                [in]  ULONG       cchName,
                [out] ULONG       *pcchName,
                [out, annotation("_Out_writes_to_(cchName, *pcchName)")]
                      WCHAR       szName[] ,
                [out] ProcessID   *pProcessId);

    /*
     * Retrieve information about an assembly given its ID.
     */
    HRESULT GetAssemblyInfo(
                [in]  AssemblyID  assemblyId,
                [in]  ULONG       cchName,
                [out] ULONG       *pcchName,
                [out, annotation("_Out_writes_to_(cchName, *pcchName)")]
                      WCHAR       szName[] ,
                [out] AppDomainID *pAppDomainId,
                [out] ModuleID    *pModuleId);


    /*
     * V2 MIGRATION WARNING: DEPRECATED.  Returns E_NOTIMPL always.
     *
     * See ICorProfilerInfo4::RequestReJIT instead
     *
     */
    HRESULT SetFunctionReJIT(
                [in] FunctionID functionId);

    /*
     * ForceGC forces a GC to occur within the runtime.
     *
     * NOTE: This method needs to be called from a thread that does not have any
     * profiler callbacks on its stack. The most convenient way to implement this is
     * to create a separate thread within the profiler and have it call ForceGC when
     * signalled.
     */
    HRESULT ForceGC();

    /*
     *
     * V2 MIGRATION NOTE - Calling SetILInstrumentedCodeMap on any one
     * of the multiple FunctionIDs that represent a generic function in a given
     * AppDomain will affect all instantiations of that function in the AppDomain.
     *
     * fStartJit should be set to true the first time this function is called for
     * a given FunctionID, and false thereafter.
     *
     * The format of the map is as follows:
     *      The debugger will assume that each oldOffset refers to an IL offset
     *  within the original, unmodified IL code.  newOffset refers to the corresponding
     *  IL offset within the new, instrumented code.
     *
     * The map should be sorted in increasing order. For stepping to work properly:
     * - Instrumented IL should not be reordered (so both old & new are sorted)
     * - original IL should not be removed
     * - the map should include entries to map all of the sequence points from the pdb.
     *
     * The map does not interpolate missing entries. So given the following map:
     * (0 old, 0  new)
     * (5 old, 10 new)
     * (9 old, 20 new)
     * - An old offset of 0,1,2,3,4 will be mapped to a new offset of 0
     * - An old offset of 5,6,7, or 8 will be mapped to new offset 10.
     * - An old offset of 9 or higher will be mapped to new offset 20.
     * - A new offset of 0, 1,...8,9 will be mapped to old offset 0
     * - A new offset of 10,11,...18,19 will be mapped to old offset 5.
     * - A new offset of 20 or higher will be mapped to old offset 9.
     *
     */
    HRESULT SetILInstrumentedCodeMap(
                [in]                         FunctionID functionId,
                [in]                         BOOL       fStartJit,
                [in]                         ULONG      cILMapEntries,
                [in, size_is(cILMapEntries)] COR_IL_MAP rgILMapEntries[] );

    /*
     * DEPRECATED.
     */
    HRESULT GetInprocInspectionInterface(
                [out] IUnknown **ppicd);

    /*
     * DEPRECATED.
     */
    HRESULT GetInprocInspectionIThisThread(
                [out] IUnknown **ppicd);

    /*
     * This will return the ContextID currently associated with the calling
     * runtime thread.  This will set pContextId to NULL if the calling thread
     * is not a runtime thread.
     */
    HRESULT GetThreadContext(
                [in]  ThreadID  threadId,
                [out] ContextID *pContextId);

    /*
     * DEPRECATED.
     */
    HRESULT BeginInprocDebugging(
                [in]  BOOL   fThisThreadOnly,
                [out] DWORD *pdwProfilerContext);

    /*
     * DEPRECATED.
     */
    HRESULT EndInprocDebugging(
                [in]  DWORD dwProfilerContext);

    /*
     * GetILToNativeMapping returns a map from IL offsets to native
     * offsets for this code. An array of COR_PROF_IL_TO_NATIVE_MAP
     * structs will be returned, and some of the ilOffsets in this array
     * may be the values specified in CorDebugIlToNativeMappingTypes.
     */
    HRESULT GetILToNativeMapping(
                [in] FunctionID functionId,
                [in] ULONG32 cMap,
                [out] ULONG32 *pcMap,
                [out, size_is(cMap), length_is(*pcMap)]
                    COR_DEBUG_IL_TO_NATIVE_MAP map[]);
}

/*
 * The CLR implements the ICorProfilerInfo2 interface. This interface is
 * used by a code profiler to communicate with the CLR to control event
 * monitoring and request information. The CLR passes an
 * ICorProfilerInfo2 interface to each code profiler during initialization.
 *
 * A code profiler can call methods on the ICorProfilerInfo2 interface to get
  * information about managed code being executed under the control of the CLR
 *
 * The ICorProfilerInfo2 interface implemented by the CLR uses the free
 * threaded model.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 *
 */

[
    object,
    uuid(CC0935CD-A518-487d-B0BB-A93214E65478),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo2 : ICorProfilerInfo
{
    /*
     * The code profiler calls DoStackSnapshot to do sparse one-off stack snapshots.
     *
     * Passing NULL for thread yields a snapshot of the current thread. If a ThreadID
     * of a different thread is passed, the runtime will suspend that thread, perform
     * the snapshot, and resume.
     *
     * infoFlags come from the COR_PRF_SNAPSHOT_INFO enum.
     *
     * context is a platform-dependent CONTEXT structure, representing the complete
     * register context that the profiling API will use to seed the stack walk.  If this
     * is non-NULL, it must point to JITd or NGENd code, or else DoStackSnapshot
     * will return CORPROF_E_STACKSNAPSHOT_UNMANAGED_CTX.  Contexts are
     * only provided by profilers that hijack threads to force them to walk their
     * own stacks; profilers should not attempt to provide a context when walking
     * another thread's stack. If context is NULL, the stack walk will begin at the
     * last available managed frame for the target thread.
     *
     * See the definition of StackSnapshotCallback for more information.
     */
    HRESULT DoStackSnapshot(
                [in] ThreadID thread,
                [in] StackSnapshotCallback *callback,
                [in] ULONG32 infoFlags,
                [in] void *clientData,
                [in, size_is(contextSize)] BYTE context[],
                [in] ULONG32 contextSize);

    /*
     * The code profiler calls SetFunctionHooks2 to specify handlers
     * for FunctionEnter2, FunctionLeave2, and FunctionTailcall2
     * callbacks.
     *
     * Note that only one set of callbacks may be active at a time. Thus,
     * if a profiler calls SetEnterLeaveFunctionHooks, SetEnterLeaveFunctionHooks2
     * and SetEnterLeaveFunctionHooks3(WithInfo), then SetEnterLeaveFunctionHooks3(WithInfo)
     * wins.  SetEnterLeaveFunctionHooks2 takes precedence over SetEnterLeaveFunctionHooks
     * when both are set.
     *
     * Each pointer may be null to disable that particular callback.
     *
     * SetEnterLeaveFunctionHooks2 may only be called from the
     * profiler's Initialize() callback.
     */
    HRESULT SetEnterLeaveFunctionHooks2(
                [in] FunctionEnter2    *pFuncEnter,
                [in] FunctionLeave2    *pFuncLeave,
                [in] FunctionTailcall2 *pFuncTailcall);

    /*
     * GetFunctionInfo2 returns the parent class of a function, plus the
     * function's metadata token and the ClassIDs of its type arguments
     * (if any).
     *
     * When a COR_PRF_FRAME_INFO obtained from a FunctionEnter2
     * callback is passed, the ClassID and all type arguments will be exact.
     *
     * When a COR_PRF_FRAME_INFO from any other source is passed, or
     * when 0 is passed as the frameInfo argument, exact ClassID and type
     * arguments cannot always be determined.  The value returned in pClassId
     * may not be exact and some type args will come back as System.Object.
     *
     */
    HRESULT GetFunctionInfo2(
                [in] FunctionID funcId,
                [in] COR_PRF_FRAME_INFO frameInfo,
                [out] ClassID *pClassId,
                [out] ModuleID *pModuleId,
                [out] mdToken *pToken,
                [in] ULONG32 cTypeArgs,
                [out] ULONG32 *pcTypeArgs,
                [out] ClassID typeArgs[]);

    /*
     * GetStringLayout returns detailed information about how string objects are stored.
     *
     * *pBufferLengthOffset is the offset (from the ObjectID pointer) to a DWORD that
     * stores the length of the string's buffer
     *
     * *pStringLengthOffset is the offset (from the ObjectID pointer) to a DWORD that
     * stores the length of the string itself
     *
     * *pBufferOffset is the offset (from the ObjectID pointer) to the actual buffer
     * of wide characters
     *
     * Strings may or may not be null-terminated.
     */
    HRESULT GetStringLayout(
                [out] ULONG *pBufferLengthOffset,
                [out] ULONG *pStringLengthOffset,
                [out] ULONG *pBufferOffset);

    /*
     * GetClassLayout returns detailed information how a specific class is stored.
     * It only returns the fields defined by the class itself; if the parent class
     * defined fields as well, the profiler must call GetClassLayout on the parent class
     * to obtain those fields.
     *
     * It will fail with E_INVALIDARG for string and array classes.
     */
    HRESULT GetClassLayout(
                [in]  ClassID classID,
                [in, out] COR_FIELD_OFFSET rFieldOffset[],
                [in] ULONG cFieldOffset,
                [out] ULONG *pcFieldOffset,
                [out] ULONG *pulClassSize);

    /*
     * Returns the parent module a class is defined in, along with the
     * metadata token for the class, the ClassID of its parent class, and the
     * ClassIDs of its type arguments (if any).
     *
     * One can call GetModuleMetaData to obtain the metadata interface for
     * a given module.  The token can then be used to access the metadata for this
     * class.
     */
    HRESULT GetClassIDInfo2(
                [in] ClassID classId,
                [out] ModuleID *pModuleId,
                [out] mdTypeDef *pTypeDefToken,
                [out] ClassID *pParentClassId,
                [in] ULONG32 cNumTypeArgs,
                [out] ULONG32 *pcNumTypeArgs,
                [out] ClassID typeArgs[]);

    /*
     * GetCodeInfo2 returns the extents of native code associated with the
     * given FunctionID. These extents are returned sorted in order of increasing
     * IL offset.
     */
    HRESULT GetCodeInfo2(
                [in] FunctionID functionID,
                [in] ULONG32 cCodeInfos,
                [out] ULONG32 *pcCodeInfos,
                [out, size_is(cCodeInfos), length_is(*pcCodeInfos)]
                COR_PRF_CODE_INFO codeInfos[]);

    /*
     * GetClassFromTokenAndTypeArgs returns the ClassID of a type given its metadata
     * token (typedef) and the ClassIDs of its type arguments (if any).
     *
     *      cTypeArgs must be equal to the number of type parameters for the given type
     *          (0 for non-generic types)
     *      typeArgs may be NULL if cTypeArgs == 0
     *
     * Calling this function with a TypeRef token can have unpredictable results; callers
     * should resolve the TypeRef to a TypeDef and use that.
     *
     * If the type is not already loaded, calling this function will cause it to be.
     * Loading is a dangerous operation in many contexts. For example, calling
     * this function during loading of modules or other types could lead to an infinite
     * loop as the runtime attempts to circularly load things.
     *
     * In general, use of this function is discouraged. If profilers are interested in
     * events for a particular type, they should store the ModuleID and TypeDef of that type,
     * and use GetClassIDInfo2 to check whether a given ClassID is the desired type.
     */
    HRESULT GetClassFromTokenAndTypeArgs(
                    [in] ModuleID moduleID,
                    [in] mdTypeDef typeDef,
                    [in] ULONG32 cTypeArgs,
                    [in, size_is(cTypeArgs)] ClassID typeArgs[],
                    [out] ClassID* pClassID);

    /*
     * GetFunctionFromTokenAndTypeArgs returns the FunctionID of a function given
     * its metadata token (methoddef), containing class, and type args (if any).
     *
     *      classID may be 0 if the containing class is not generic
     *      typeArgs may be NULL if cTypeArgs == 0
     *
     * Calling this function with a MethodRef token can have unpredictable results; callers
     * should resolve the MethodRef to a MethodDef and use that.
     *
     * If the function is not already loaded, calling this function will cause it to be.
     * Loading is a dangerous operation in many contexts. For example, calling
     * this function during loading of modules or types could lead to an infinite
     * loop as the runtime attempts to circularly load things.
     *
     * In general, use of this function is discouraged. If profilers are interested in
     * events for a particular function, they should store the ModuleID and MethodDef of that function,
     * and use GetFunctionInfo2 to check whether a given FunctionID is the desired function.
     */
    HRESULT GetFunctionFromTokenAndTypeArgs(
                    [in] ModuleID moduleID,
                    [in] mdMethodDef funcDef,
                    [in] ClassID classId,
                    [in] ULONG32 cTypeArgs,
                    [in, size_is(cTypeArgs)] ClassID typeArgs[],
                    [out] FunctionID* pFunctionID);

    /*
     * Returns an enumerator over all frozen objects in the given module.
     */
    HRESULT EnumModuleFrozenObjects(
                [in] ModuleID moduleID,
                [out] ICorProfilerObjectEnum** ppEnum);



    /*
     * GetArrayObjectInfo returns detailed information about an array object.
     * objectId is a valid array object.
     * cDimensions is the rank (# of dimensions).
     * On success:
     *   pDimensionSizes, pDimensionLowerBounds are parallel arrays describing the size and lower bound for each dimension.
     *   (*ppData) is a pointer to the raw buffer for the array, which is laid out according to the C++
     *   convention
     */
    HRESULT GetArrayObjectInfo(
                    [in] ObjectID objectId,
                    [in] ULONG32 cDimensions,
                    [out, size_is(cDimensions)] ULONG32 pDimensionSizes[],
                    [out, size_is(cDimensions)] int pDimensionLowerBounds[],
                    [out] BYTE **ppData);

    /*
     * GetBoxClassLayout returns information about how a particular value type is laid out
     * when boxed.
     *
     *  *pBufferOffset is the offset (from the ObjectID pointer) to where the value type
     *  is stored within the box. The value type's class layout may then be used to
     *  interpret it.
     */
    HRESULT GetBoxClassLayout(
                    [in] ClassID classId,
                    [out] ULONG32 *pBufferOffset);


    /*
     * GetThreadAppDomain returns the AppDomainID currently associated with\
     * the given ThreadID
     */
    HRESULT GetThreadAppDomain(
                    [in] ThreadID threadId,
                    [out] AppDomainID *pAppDomainId);


    /*
     * GetRVAStaticAddress gets the address of the home for the given
     * RVA static. It must be called from a managed thread.  Otherwise,
     * it will return CORPROF_E_NOT_MANAGED_THREAD.
     */
    HRESULT GetRVAStaticAddress(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [out] void **ppAddress);

    /*
     * GetAppDomainStaticAddress gets the address of the home for the given
     * AppDomain static in the given AppDomain.
     *
     * This function may return CORPROF_E_DATAINCOMPLETE if the given static
     * has not been assigned a home in the given AppDomain.
     */
    HRESULT GetAppDomainStaticAddress(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [in] AppDomainID appDomainId,
                    [out] void **ppAddress);

    /*
     * GetThreadStaticAddress gets the address of the home for the given
     * Thread static in the given Thread. threadId must be the current thread
     * ID or NULL, which means using curernt thread ID.
     *
     * This function may return CORPROF_E_DATAINCOMPLETE if the given static
     * has not been assigned a home in the given Thread.
     */
    HRESULT GetThreadStaticAddress(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [in] ThreadID threadId,
                    [out] void **ppAddress);

    /*
     * GetContextStaticAddress gets the address of the home for the given
     * Context static in the given context.  It must be called from a managed
     * thread.  Otherwise, it will return CORPROF_E_NOT_MANAGED_THREAD.
     *
     * This function may return CORPROF_E_DATAINCOMPLETE if the given static
     * has not been assigned a home in the given Context.
     */
    HRESULT GetContextStaticAddress(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [in] ContextID contextId,
                    [out] void **ppAddress);

    /*
     * GetStaticFieldInfo gets COR_PRF_STATIC_TYPE for a specific
     * field in a class. This information can be used to decide which
     * function to call to get the address of the static.
     *
     * NOTE: One should still check the metadata for a static to ensure
     * it is actually going to have an address. Statics that are literals
     * (aka constants) exist only in the metadata and do not have an address.
     *
     */
    HRESULT GetStaticFieldInfo(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [out] COR_PRF_STATIC_TYPE *pFieldInfo);

    /*
     * GetGenerationBounds returns the memory regions that make up a given
     * GC generation in memory. It may be called from any profiler callback as long
     * as a GC is not in progress. (To be exact, it may be called from any callback
     * except for those that occur between GarbageCollectionStarted and GarbageCollectionFinished.)
     *
     * Most shifting of generations takes place during garbage collections; between
     * collections generations may grow, but generally do not move around. Therefore
     * the most interesting places to call this function are in GarbageCollectionStarted
     * and Finished.
     *
     * During program startup, some objects are allocated by the CLR itself, generally
     * in generations 3 and 0. So by the time managed code starts executing, these
     * generations will already contain objects. Generations 1 and 2 will be normally
     * empty, except for dummy objects generated by the garbage collector (of size 12
     * bytes in 32-bit implementations of the CLR, larger in 64-bit implementations).
     * You may also see generation 2 ranges that are inside modules generated by ngen.
     * These are "frozen objects" generated at ngen time rather than allocated by the
     * garbage collector.
     *
     * cObjectRanges is a count of the number of elements allocated by the caller for
     *      the ranges array
     * pcObjectRanges is an out param for the number of ranges in the given generation
     * ranges is an array of elements of type COR_PRF_GC_GENERATION_RANGE, each of which
     *      describes a range of memory used by the garbage collector
     */

    HRESULT GetGenerationBounds(
                    [in] ULONG cObjectRanges,
                    [out] ULONG *pcObjectRanges,
                    [out, size_is(cObjectRanges), length_is(*pcObjectRanges)] COR_PRF_GC_GENERATION_RANGE ranges[]);

    /*
     * GetObjectGeneration returns which generation the given object is currently in, along
     * with the start and length of the segment containing the object. It may be called
     * at any time as long as a GC is not in progress.
     */

    HRESULT GetObjectGeneration(
                    [in] ObjectID objectId,
                    [out] COR_PRF_GC_GENERATION_RANGE *range);


   /*
     * When an exception notification is received, GetNotifiedExceptionClauseInfo() may be used
     * to get the native address and frame information for the exception clause (catch/finally/filter)
     * that is about to be run (ExceptionCatchEnter, ExceptionUnwindFinallyEnter, ExceptionFilterEnter)
     * or has just been run (ExceptionCatchLeave, ExceptionUnwindFinallyLeave, ExceptionFilterLeave).
     *
     * This call may be made at any time after one of the Enter calls above until either the matching
     * Leave call is received or until a nested exception throws out of the current clause in which case
     * there will be no Leave notification for that clause.  Note it is not possible for a throw to escape
     * a Filter so there is always a Leave in that case.
     *
     * Return values:
     *   S_OK indicates success
     *   S_FALSE indicates that no exception clause is active
     *   CORPROF_E_NOT_MANAGED_THREAD indicates an unmanaged thread.
     */

    HRESULT GetNotifiedExceptionClauseInfo(
                    [out] COR_PRF_EX_CLAUSE_INFO *pinfo);
}

/*
 * The CLR implements the ICorProfilerInfo3 interface. This interface is
 * used by a code profiler to communicate with the CLR to control event
 * monitoring and request information. The CLR passes an
 * ICorProfilerInfo3 interface to each code profiler during initialization.
 *
 * A code profiler can call methods on the ICorProfilerInfo3 interface to get
  * information about managed code being executed under the control of the CLR
 *
 * The ICorProfilerInfo3 interface implemented by the CLR uses the free
 * threaded model.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 *
 */

[
    object,
    uuid(B555ED4F-452A-4E54-8B39-B5360BAD32A0),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo3 : ICorProfilerInfo2
{
    /*
     * Returns an enumerator for all previously jitted functions. May overlap with
     * functions previously reported via CompilationStarted callbacks.
     * NOTE: The returned enumeration will only include '0' for the value of the
     * COR_PRF_FUNCTION::reJitId field.  If you require valid COR_PRF_FUNCTION::reJitId values, use
     * ICorProfilerInfo4::EnumJITedFunctions2.
     */
    HRESULT EnumJITedFunctions([out] ICorProfilerFunctionEnum** ppEnum);

    HRESULT RequestProfilerDetach([in] DWORD dwExpectedCompletionMilliseconds);

    HRESULT SetFunctionIDMapper2(
                [in] FunctionIDMapper2 *pFunc,
                [in] void *clientData);

    /*
     * GetStringLayout2 returns detailed information about how string objects are stored.
     *
     * *pStringLengthOffset is the offset (from the ObjectID pointer) to a DWORD that
     * stores the length of the string itself
     *
     * *pBufferOffset is the offset (from the ObjectID pointer) to the actual buffer
     * of wide characters
     *
     * Strings may or may not be null-terminated.
     */
    HRESULT GetStringLayout2(
                [out] ULONG *pStringLengthOffset,
                [out] ULONG *pBufferOffset);

    /*
     * The code profiler calls SetFunctionHooks3 to specify handlers
     * for FunctionEnter3, FunctionLeave3, and FunctionTailcall3, and calls
     * SetFunctionHooks3WithInfo to specify handlers for FunctionEnter3WithInfo,
     * FunctionLeave3WithInfo, and FunctionTailcall3WithInfo.
     *
     * Note that only one set of callbacks may be active at a time. Thus,
     * if a profiler calls SetEnterLeaveFunctionHooks, SetEnterLeaveFunctionHooks2
     * and SetEnterLeaveFunctionHooks3(WithInfo), then SetEnterLeaveFunctionHooks3(WithInfo)
     * wins.  SetEnterLeaveFunctionHooks2 takes precedence over SetEnterLeaveFunctionHooks
     * when both are set.
     *
     * Each function pointer may be null to disable that callback.
     *
     * SetEnterLeaveFunctionHooks3(WithInfo) may only be called from the
     * profiler's Initialize() callback.
     */
    HRESULT SetEnterLeaveFunctionHooks3(
                [in] FunctionEnter3    *pFuncEnter3,
                [in] FunctionLeave3    *pFuncLeave3,
                [in] FunctionTailcall3 *pFuncTailcall3);


    HRESULT SetEnterLeaveFunctionHooks3WithInfo(
                [in] FunctionEnter3WithInfo    *pFuncEnter3WithInfo,
                [in] FunctionLeave3WithInfo    *pFuncLeave3WithInfo,
                [in] FunctionTailcall3WithInfo *pFuncTailcall3WithInfo);

    /*
     * The profiler can call GetFunctionEnter3Info to gather frame info and argument info
     * in FunctionEnter3WithInfo callback. The profiler needs to allocate sufficient space
     * for COR_PRF_FUNCTION_ARGUMENT_INFO of the function it's inspecting and indicate the
     * size in a ULONG pointed by pcbArgumentInfo.
     */
    HRESULT GetFunctionEnter3Info(
                [in]  FunctionID functionId,
                [in]  COR_PRF_ELT_INFO eltInfo,
                [out] COR_PRF_FRAME_INFO *pFrameInfo,
                [in, out] ULONG *pcbArgumentInfo,
                [out, size_is(*pcbArgumentInfo)] COR_PRF_FUNCTION_ARGUMENT_INFO *pArgumentInfo);

    /*
     * The profiler can call GetFunctionLeave3Info to gather frame info and return value
     * in FunctionLeave3WithInfo callback.
     */
    HRESULT GetFunctionLeave3Info(
                [in]  FunctionID functionId,
                [in]  COR_PRF_ELT_INFO eltInfo,
                [out] COR_PRF_FRAME_INFO *pFrameInfo,
                [out] COR_PRF_FUNCTION_ARGUMENT_RANGE *pRetvalRange);

    /*
     * The profiler can call GetFunctionTailcall3Info to gather frame info in
     * FunctionTailcall3WithInfo callback.
     */
    HRESULT GetFunctionTailcall3Info(
                [in]  FunctionID functionId,
                [in]  COR_PRF_ELT_INFO eltInfo,
                [out] COR_PRF_FRAME_INFO *pFrameInfo);

    HRESULT EnumModules([out] ICorProfilerModuleEnum** ppEnum);

    /*
     * The profiler can call GetRuntimeInformation to query CLR version information.
     * Passing NULL to any parameter is acceptable except pcchVersionString cannot
     * be NULL if szVersionString is not NULL.
     */
    HRESULT GetRuntimeInformation([out] USHORT *pClrInstanceId,
                                  [out] COR_PRF_RUNTIME_TYPE *pRuntimeType,
                                  [out] USHORT *pMajorVersion,
                                  [out] USHORT *pMinorVersion,
                                  [out] USHORT *pBuildNumber,
                                  [out] USHORT *pQFEVersion,
                                  [in]  ULONG  cchVersionString,
                                  [out] ULONG  *pcchVersionString,
                                  [out, annotation("_Out_writes_to_(cchVersionString, *pcchVersionString)")]
                                        WCHAR  szVersionString[]);

    /*
     * GetThreadStaticAddress2 gets the address of the home for the given
     * Thread static in the given Thread.
     *
     * This function may return CORPROF_E_DATAINCOMPLETE if the given static
     * has not been assigned a home in the given Thread.
     */
    HRESULT GetThreadStaticAddress2(
                    [in] ClassID classId,
                    [in] mdFieldDef fieldToken,
                    [in] AppDomainID appDomainId,
                    [in] ThreadID threadId,
                    [out] void **ppAddress);

    /*
     * GetAppDomainsContainingModule returns the AppDomainIDs in which the
     * given module has been loaded
     */
    HRESULT GetAppDomainsContainingModule(
                [in] ModuleID moduleId,
                [in] ULONG32 cAppDomainIds,
                [out] ULONG32 *pcAppDomainIds,
                [out, size_is(cAppDomainIds), length_is(*pcAppDomainIds)] AppDomainID appDomainIds[]);


    /*
     * Retrieve information about a given module.
     *
     * When the module is loaded from disk, the name returned will be the filename;
     * otherwise, the name will be the name from the metadata Module table (i.e.,
     * the same as the managed System.Reflection.Module.ScopeName).
     *
     * *pdwModuleFlags will be filled in with a bitmask of values from COR_PRF_MODULE_FLAGS
     * that specify some properties of the module.
     *
     * NOTE: While this function may be called as soon as the moduleId is alive,
     * the AssemblyID of the containing assembly will not be available until the
     * ModuleAttachedToAssembly callback.
     *
     */
    HRESULT GetModuleInfo2(
                [in]  ModuleID              moduleId,
                [out] LPCBYTE               *ppBaseLoadAddress,
                [in]  ULONG                 cchName,
                [out] ULONG                 *pcchName,
                [out, annotation("_Out_writes_to_(cchName, *pcchName)")]
                      WCHAR                 szName[],
                [out] AssemblyID            *pAssemblyId,
                [out] DWORD                 *pdwModuleFlags);


}


/*
 * This interface lets you iterate over the frozen objects from ngen images.
 */

[
    object,
    uuid(2C6269BD-2D13-4321-AE12-6686365FD6AF),
    pointer_default(unique),
    local
]
interface ICorProfilerObjectEnum : IUnknown
{
    HRESULT Skip(
                [in] ULONG celt);

    HRESULT Reset();

    HRESULT Clone(
                    [out] ICorProfilerObjectEnum **ppEnum);

    HRESULT GetCount(
                    [out] ULONG *pcelt);

    HRESULT Next(
                    [in] ULONG celt,
                    [out, size_is(celt), length_is(*pceltFetched)]  ObjectID objects[],
                    [out] ULONG *pceltFetched);
}


/*
 * This interface lets you iterate over functions in the runtime.
 */

[
    object,
    uuid(FF71301A-B994-429D-A10B-B345A65280EF),
    pointer_default(unique),
    local
]
interface ICorProfilerFunctionEnum : IUnknown
{
    HRESULT Skip([in] ULONG celt);

    HRESULT Reset();

    HRESULT Clone([out] ICorProfilerFunctionEnum **ppEnum);

    HRESULT GetCount([out] ULONG *pcelt);

    HRESULT Next([in]  ULONG            celt,
                 [out, size_is(celt), length_is(*pceltFetched)]
                       COR_PRF_FUNCTION ids[],
                 [out] ULONG *          pceltFetched);
};

/*
 * This interface lets you iterate over modules in the runtime.
 */

[
    object,
    uuid(b0266d75-2081-4493-af7f-028ba34db891),
    pointer_default(unique),
    local
]
interface ICorProfilerModuleEnum : IUnknown
{
    HRESULT Skip([in] ULONG celt);

    HRESULT Reset();

    HRESULT Clone([out] ICorProfilerModuleEnum **ppEnum);

    HRESULT GetCount([out] ULONG *pcelt);

    HRESULT Next([in]  ULONG            celt,
                 [out, size_is(celt), length_is(*pceltFetched)]
                       ModuleID         ids[],
                 [out] ULONG *          pceltFetched);
};

/*
 * NOTE: DEPRECATED, now you can use your any allocator.
 *
 * This is simple allocator that only allows you to allocate memory.
 * You may not free it.  This was used in conjunction with
 * ICorProfilerInfo::SetILFunctionBody.
 */
[
    object,
    uuid(A0EFB28B-6EE2-4d7b-B983-A75EF7BEEDB8),
    pointer_default(unique),
    local
]
interface IMethodMalloc : IUnknown
{
    /*
     * Tries to allocate memory above the start address of the module from
     * which it was created.  It is important to note that this method may
     * fail to allocate the memory specified above the start address, and
     * may as a result return NULL.
     */
    PVOID Alloc(
                    [in] ULONG cb);
}

/*
 * The CLR implements the ICorProfilerFunctionControl interface. This interface
 * is used by a code profiler to communicate with the CLR to control how the
 * JIT should generate code when rejitting a specific method.
 *
 * The ICorProfilerFunctionControl interface implemented by the CLR uses the
 * free threaded model.
 */

[
    object,
    uuid(F0963021-E1EA-4732-8581-E01B0BD3C0C6),
    pointer_default(unique),
    local
]
interface ICorProfilerFunctionControl : IUnknown
{
    /*
     * Set one or more flags from COR_PRF_CODEGEN_FLAGS to control code
     * generation just for this method.
     */
    HRESULT SetCodegenFlags(
                [in] DWORD flags);

    /*
     * Override the method body.
     */
    HRESULT SetILFunctionBody(
                [in]                               ULONG   cbNewILMethodHeader,
                [in, size_is(cbNewILMethodHeader)] LPCBYTE pbNewILMethodHeader);

    /*
     * This is not currently implemented, and will return E_NOTIMPL
     */
    HRESULT SetILInstrumentedCodeMap(
                [in]                         ULONG      cILMapEntries,
                [in, size_is(cILMapEntries)] COR_IL_MAP rgILMapEntries[]);

}

/*
 * The CLR implements the ICorProfilerInfo4 interface. This interface is
 * used by a code profiler to communicate with the CLR to control event
 * monitoring and request information. The CLR passes an
 * ICorProfilerInfo4 interface to each code profiler during initialization.
 *
 * A code profiler can call methods on the ICorProfilerInfo4 interface to get
  * information about managed code being executed under the control of the CLR
 *
 * The ICorProfilerInfo4 interface implemented by the CLR uses the free
 * threaded model.
 *
 * The methods implemented on this interface return S_OK on success, or E_FAIL
 * on failure.
 *
 */

[
    object,
    uuid(0d8fdcaa-6257-47bf-b1bf-94dac88466ee),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo4 : ICorProfilerInfo3
{
    HRESULT EnumThreads([out] ICorProfilerThreadEnum **ppEnum);
    HRESULT InitializeCurrentThread();

    /*
     * Call RequestReJIT to have the runtime re-JIT a particular set of methods.
     * A code profiler can then adjust the code generated when the method is
     * re-JITed through the ICorProfilerFunctionControl interface.  This does
     * not impact currently executing methods, only future invocations.
     *
     * A return code of S_OK indicates that all of the requested methods were
     * attempted to be rejitted.   However, the profiler must implement
     * ICorProfilerCallback4::ReJITError to determine which of the methods were
     * successfully re-JITed.
     *
     * A failure return value (E_*) indicates some failure that prevents any
     * re-JITs.
     */
    HRESULT RequestReJIT(
                [in]                       ULONG       cFunctions,
                [in, size_is(cFunctions)]  ModuleID    moduleIds[],
                [in, size_is(cFunctions)]  mdMethodDef methodIds[]);

    /*
     * RequestRevert will instruct the runtime to revert to using/calling the
     * original method (original IL and flags) rather than whatever was
     * ReJITed.  This does not change any currently active methods, only future
     * invocations.
     *
     */
    HRESULT RequestRevert(
                [in]                       ULONG       cFunctions,
                [in, size_is(cFunctions)]  ModuleID    moduleIds[],
                [in, size_is(cFunctions)]  mdMethodDef methodIds[],
                [out, size_is(cFunctions)] HRESULT     status[]);

    /*
     * Same as GetCodeInfo2, except instead of always returning the code info
     * associated with the original IL/function, you can request the code info
     * for a particular re-JITed version of a function.
     */
    HRESULT GetCodeInfo3(
                [in]  FunctionID           functionID,
                [in]  ReJITID              reJitId,
                [in]  ULONG32              cCodeInfos,
                [out] ULONG32 *            pcCodeInfos,
                [out, size_is(cCodeInfos), length_is(*pcCodeInfos)]
                      COR_PRF_CODE_INFO    codeInfos[]);

    /*
     * Same as GetFunctionFromIP, but also returns which re-JITed version is
     * associated with the IP address.
     */
    HRESULT GetFunctionFromIP2(
                [in]  LPCBYTE      ip,
                [out] FunctionID * pFunctionId,
                [out] ReJITID *    pReJitId);

    /*
     * GetReJITIDs can be used to find all of the re-JITed versions of the
     * given function.
     */
    HRESULT GetReJITIDs(
                [in]  FunctionID          functionId,
                [in]  ULONG               cReJitIds,
                [out] ULONG *             pcReJitIds,
                [out, size_is(cReJitIds), length_is(*pcReJitIds)]
                      ReJITID             reJitIds[]);

    /*
     * Same as GetILToNativeMapping, but allows the code profiler to specify
     * which re-JITed version it applies to.
     */
    HRESULT GetILToNativeMapping2(
                [in]  FunctionID                       functionId,
                [in]  ReJITID                          reJitId,
                [in]  ULONG32                          cMap,
                [out] ULONG32 *                        pcMap,
                [out, size_is(cMap),length_is(*pcMap)]
                      COR_DEBUG_IL_TO_NATIVE_MAP       map[]);

    /*
     * Returns an enumerator for all previously jitted functions. May overlap with
     * functions previously reported via CompilationStarted callbacks.  The returned
     * enumeration will include values for the COR_PRF_FUNCTION::reJitId field
     */
    HRESULT EnumJITedFunctions2([out] ICorProfilerFunctionEnum** ppEnum);

    /*
     * The code profiler calls GetObjectSize to obtain the size of an object.
     * Note that types like arrays and strings may have a different size for each object.
     */
    HRESULT GetObjectSize2(
                [in]  ObjectID objectId,
                [out] SIZE_T *pcSize);

}

[
    object,
    uuid(07602928-CE38-4B83-81E7-74ADAF781214),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo5 : ICorProfilerInfo4
{
    /*
     * The code profiler calls GetEventMask2 to obtain the current event
     * categories for which it is to receive event notifications from the CLR
     *
     * *pdwEventsLow is a bitwise combination of values from COR_PRF_MONITOR
     * *pdwEventsHigh is a bitwise combination of values from COR_PRF_HIGH_MONITOR
     */
    HRESULT GetEventMask2(
            [out] DWORD *pdwEventsLow,
            [out] DWORD *pdwEventsHigh);

    /*
     * The code profiler calls SetEventMask2 to set the event categories for
     * which it is set to receive notification from the CLR.
     *
     * dwEventsLow is a bitwise combination of values from COR_PRF_MONITOR
     * dwEventsHigh is a bitwise combination of values from COR_PRF_HIGH_MONITOR
     */
    HRESULT SetEventMask2(
            [in] DWORD dwEventsLow,
            [in] DWORD dwEventsHigh);
};


[
    object,
    uuid(F30A070D-BFFB-46A7-B1D8-8781EF7B698A),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo6 : ICorProfilerInfo5
{
    /*
    * Returns an enumerator for all methods that
    * - belong to a given NGen or R2R module (inlinersModuleId) and
    * - inlined a body of a given method (inlineeModuleId / inlineeMethodId).
    *
    * If incompleteData is set to TRUE after function is called, it means that the methods enumerator
    * doesn't contain all methods inlining a given method.
    * It can happen when one or more direct or indirect dependencies of inliners module haven't been loaded yet.
    * If profiler needs accurate data it should retry later when more modules are loaded (preferably on each module load).
    *
    * It can be used to lift limitation on inlining for ReJIT.
    *
    * NOTE: If the inlinee method is decorated with the System.Runtime.Versioning.NonVersionable attribute then
    * then some inliners may not ever be reported. If you need to get a full accounting you can avoid the issue
    * by disabling the use of all native images.
    *
    */
    HRESULT EnumNgenModuleMethodsInliningThisMethod(
        [in] ModuleID    inlinersModuleId,
        [in] ModuleID    inlineeModuleId,
        [in] mdMethodDef inlineeMethodId,
        [out] BOOL        *incompleteData,
        [out] ICorProfilerMethodEnum** ppEnum);
};

[
    object,
    uuid(9AEECC0D-63E0-4187-8C00-E312F503F663),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo7 : ICorProfilerInfo6
{
    /*
    * Applies the newly emitted Metadata.
    *
    * This method can be used to apply the newly defined metadata by IMetadataEmit::Define* methods
    * to the module.
    *
    * If metadata changes are made after ModuleLoadFinished callback,
    * it is required to call this method before using the new metadata
    */
    HRESULT ApplyMetaData(
        [in] ModuleID    moduleId);

    /* Returns the length of an in-memory symbol stream
    *
    * If the module has in-memory symbols the length of the stream will
    * be placed in pCountSymbolBytes. If the module doesn't have in-memory
    * symbols, *pCountSymbolBytes = 0
    *
    * Returns S_OK if the length could be determined (even if it is 0)
    *
    * Note: The current implementation does not support reflection.emit.
    * CORPROF_E_MODULE_IS_DYNAMIC will be returned in that case.
    */
    HRESULT GetInMemorySymbolsLength(
        [in] ModuleID moduleId,
        [out] DWORD* pCountSymbolBytes);

    /* Reads bytes from an in-memory symbol stream
    *
    * This function attempts to read countSymbolBytes of data starting at offset
    * symbolsReadOffset within the in-memory stream. The data will be copied into
    * pSymbolBytes which is expected to have countSymbolBytes of space available.
    * pCountSymbolsBytesRead contains the actual number of bytes read which
    * may be less than countSymbolBytes if the end of the stream is reached.
    *
    * Returns S_OK if a non-zero number of bytes were read.
    *
    * Note: The current implementation does not support reflection.emit.
    * CORPROF_E_MODULE_IS_DYNAMIC will be returned in that case.
    */
    HRESULT ReadInMemorySymbols(
        [in] ModuleID moduleId,
        [in] DWORD symbolsReadOffset,
        [out] BYTE* pSymbolBytes,
        [in] DWORD countSymbolBytes,
        [out] DWORD* pCountSymbolBytesRead);

};

[
    object,
    uuid(C5AC80A6-782E-4716-8044-39598C60CFBF),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo8 : ICorProfilerInfo7
{
    /*
    * Determines if a function has associated metadata
    *
    * Certain methods like IL Stubs or LCG Methods do not have
    * associated metadata that can be retrieved using the IMetaDataImport APIs.
    *
    * Such methods can be encountered by profilers through instruction pointers
    * or by listening to ICorProfilerCallback::DynamicMethodJITCompilationStarted
    *
    * This API can be used to determine whether a FunctionID is dynamic.
    */
    HRESULT IsFunctionDynamic( [in]  FunctionID  functionId,
                               [out] BOOL        *isDynamic);

    /*
    * Maps a managed code instruction pointer to a FunctionID.
    *
    * GetFunctionFromIP2 fails for dynamic methods, this method works for
    * both dynamic and non-dynamic methods. It is a superset of GetFunctionFromIP2
    */
    HRESULT GetFunctionFromIP3([in] LPCBYTE ip,
                               [out] FunctionID *functionId,
                               [out] ReJITID * pReJitId);

    /*
    * Retrieves information about dynamic methods
    *
    * Certain methods like IL Stubs or LCG do not have
    * associated metadata that can be retrieved using the IMetaDataImport APIs.
    *
    * Such methods can be encountered by profilers through instruction pointers
    * or by listening to ICorProfilerCallback::DynamicMethodJITCompilationStarted
    *
    * This API can be used to retrieve information about dynamic methods
    * including a friendly name if available.
    */
    HRESULT GetDynamicFunctionInfo( [in]  FunctionID              functionId,
                                    [out] ModuleID                *moduleId,
                                    [out] PCCOR_SIGNATURE         *ppvSig,
                                    [out] ULONG                   *pbSig,
                                    [in]  ULONG                   cchName,
                                    [out] ULONG                   *pcchName,
                                    [out] WCHAR                    wszName[]);
};

[
    object,
    uuid(008170DB-F8CC-4796-9A51-DC8AA0B47012),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo9 : ICorProfilerInfo8
{
    //Given functionId + rejitId, enumerate the native code start address of all jitted versions of this code that currently exist
    HRESULT GetNativeCodeStartAddresses(FunctionID functionID, ReJITID reJitId, ULONG32 cCodeStartAddresses, ULONG32 *pcCodeStartAddresses, UINT_PTR codeStartAddresses[]);

    //Given the native code start address, return the native->IL mapping information for this jitted version of the code
    HRESULT GetILToNativeMapping3(UINT_PTR pNativeCodeStartAddress, ULONG32 cMap, ULONG32 *pcMap, COR_DEBUG_IL_TO_NATIVE_MAP map[]);

    //Given the native code start address, return the blocks of virtual memory that store this code (method code is not necessarily stored in a single contiguous memory region)
    HRESULT GetCodeInfo4(UINT_PTR pNativeCodeStartAddress, ULONG32 cCodeInfos, ULONG32* pcCodeInfos, COR_PRF_CODE_INFO codeInfos[]);
};

[
    object,
    uuid(2F1B5152-C869-40C9-AA5F-3ABE026BD720),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo10 : ICorProfilerInfo9
{
    // Given an ObjectID, callback and clientData, enumerates each object reference (if any).
    HRESULT EnumerateObjectReferences(ObjectID objectId, ObjectReferenceCallback callback, void* clientData);

    // Given an ObjectID, determines whether it is in a read only segment.
    HRESULT IsFrozenObject(ObjectID objectId, BOOL *pbFrozen);

    // Gets the value of the configured LOH Threshold.
    HRESULT GetLOHObjectSizeThreshold(DWORD *pThreshold);

    /*
     * This method will ReJIT the methods requested, as well as any inliners
     * of the methods requested.
     *
     * RequestReJIT does not do any tracking of inlined methods. The profiler
     * was expected to track inlining and call RequestReJIT for all inliners
     * to make sure every instance of an inlined method was ReJITted.
     * This poses a problem with ReJIT on attach, since the profiler was
     * not present to monitor inlining. This method can be called to guarantee
     * that the full set of inliners will be ReJITted as well.
     */
    HRESULT RequestReJITWithInliners(
                [in]                       DWORD       dwRejitFlags,
                [in]                       ULONG       cFunctions,
                [in, size_is(cFunctions)]  ModuleID    moduleIds[],
                [in, size_is(cFunctions)]  mdMethodDef methodIds[]);

    // Suspend the runtime without performing a GC.
    HRESULT SuspendRuntime();

    // Restart the runtime from a previous suspension.
    HRESULT ResumeRuntime();
}

[
    object,
    uuid(06398876-8987-4154-B621-40A00D6E4D04),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo11 : ICorProfilerInfo10
{
    /*
     * Get environment variable for the running managed code.
     */
    HRESULT GetEnvironmentVariable(
                [in, string] const WCHAR *szName,
                [in]         ULONG cchValue,
                [out]        ULONG *pcchValue,
                [out, annotation("_Out_writes_to_(cchValue, *pcchValue)")]
                             WCHAR szValue[]);

    /*
     * Set environment variable for the running managed code.
     *
     * The code profiler calls this function to modify environment variables of the
     * current managed process. For example, it can be used in the profiler's Initialize()
     * or InitializeForAttach() callbacks.
     *
     * szName is the name of the environment variable, should not be NULL.
     *
     * szValue is the contents of the environment variable, or NULL if the variable should be deleted.
     */
    HRESULT SetEnvironmentVariable(
                [in, string] const WCHAR *szName,
                [in, string] const WCHAR *szValue);
}

[
    object,
    uuid(27b24ccd-1cb1-47c5-96ee-98190dc30959),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo12 : ICorProfilerInfo11
{
    HRESULT EventPipeStartSession(
        [in]  UINT32                            cProviderConfigs,
        [in, size_is(cProviderConfigs)]
              COR_PRF_EVENTPIPE_PROVIDER_CONFIG pProviderConfigs[],
        [in]  BOOL                              requestRundown,
        [out] EVENTPIPE_SESSION*                pSession);

    HRESULT EventPipeAddProviderToSession(
        [in] EVENTPIPE_SESSION                 session,
        [in] COR_PRF_EVENTPIPE_PROVIDER_CONFIG providerConfig);

    HRESULT EventPipeStopSession(
        [in] EVENTPIPE_SESSION session);

    HRESULT EventPipeCreateProvider(
                [in, string] const WCHAR    *providerName,
                [out] EVENTPIPE_PROVIDER    *pProvider);

    HRESULT EventPipeGetProviderInfo(
                [in] EVENTPIPE_PROVIDER provider,
                [in]  ULONG      cchName,
                [out] ULONG      *pcchName,
                [out, annotation("_Out_writes_to_(cchName, *pcchName)")]
                      WCHAR      providerName[]);

    HRESULT EventPipeDefineEvent(
                [in] EVENTPIPE_PROVIDER     provider,
                [in, string] const WCHAR   *eventName,
                [in] UINT32                 eventID,
                [in] UINT64                 keywords,
                [in] UINT32                 eventVersion,
                [in] UINT32                 level,
                [in] UINT8                  opcode,
                [in] BOOL                   needStack,
                [in] UINT32                 cParamDescs,
                [in, size_is(cParamDescs)]
                     COR_PRF_EVENTPIPE_PARAM_DESC pParamDescs[],
                [out] EVENTPIPE_EVENT      *pEvent);

    HRESULT EventPipeWriteEvent(
                [in] EVENTPIPE_EVENT    event,
                [in] UINT32             cData,
                [in, size_is(cData)]
                     COR_PRF_EVENT_DATA data[],
                [in] LPCGUID            pActivityId,
                [in] LPCGUID            pRelatedActivityId);
}

[
    object,
    uuid(6E6C7EE2-0701-4EC2-9D29-2E8733B66934),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo13 : ICorProfilerInfo12
{
    HRESULT CreateHandle(
        [in]  ObjectID object,
        [in]  COR_PRF_HANDLE_TYPE type,
        [out] ObjectHandleID* pHandle);

    HRESULT DestroyHandle(
        [in] ObjectHandleID handle);

    HRESULT GetObjectIDFromHandle(
        [in] ObjectHandleID handle,
        [out] ObjectID* pObject);
}

[
    object,
    uuid(F460E352-D76D-4FE9-835F-F6AF9D6E862D),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo14 : ICorProfilerInfo13
{
    HRESULT EnumerateNonGCObjects([out] ICorProfilerObjectEnum** ppEnum);

    HRESULT GetNonGCHeapBounds(
                    [in] ULONG cObjectRanges,
                    [out] ULONG *pcObjectRanges,
                    [out, size_is(cObjectRanges), length_is(*pcObjectRanges)] COR_PRF_NONGC_HEAP_RANGE ranges[]);


    // EventPipeCreateProvider2 allows you to pass in a callback which will be called whenever a 
    // session enables your provider. The behavior of the callback matches the ETW behavior which
    // can be counter intuitive. You will get a callback any time a session changes with the updated 
    // global keywords enabled for your session. The is_enabled parameter will be true if any 
    // session has your provider enabled. The source_id parameter will be a valid id if the callback
    // was triggered due to a session enabling and it will be NULL if it was triggered due to a session
    // disabling.
    //
    // Example:
    //      Session A enables your provider: callback with is_enabled == true, session_id == A,  and keywords == Session A
    //      Session B enables your provider: callback with is_enabled == true, session_id == B, and keywords == Session A | Session B
    //      Session B disables your provider: callback with is_enabled == true, session_id == NULL, and keywords == Session A
    //      Session A disables your provider: callback with is_enabled == false, session_id == NULL, and keywords == 0
    HRESULT EventPipeCreateProvider2(
                [in, string] const WCHAR        *providerName,
                [in]  EventPipeProviderCallback *pCallback,
                [out] EVENTPIPE_PROVIDER        *pProvider);
}

[
    object,
    uuid(B446462D-BD22-41DD-872D-DC714C49EB56),
    pointer_default(unique),
    local
]
interface ICorProfilerInfo15 : ICorProfilerInfo14
{
    /*
     * EnumerateGCHeapObjects is a method that iterates over each object in the GC heap.
     * For each object, it invokes the provided callback function which should return a bool
     * indicating whether or not enumeration should continue.
     * Enumerating the GC heap requires suspending the runtime. The profiler may accomplish this
     * by starting from a state where the runtime is not suspended and by doing one of:
     *
     * From the same thread,
     * Invoking ICorProfilerInfo10::SuspendRuntime()
     * ...
     * Invoking ICorProfilerInfo15::EnumerateGCHeapObjects()
     * ...
     * Invoking ICorProfilerInfo10::ResumeRuntime()
     *
     * or
     *
     * Invoke ICorProfilerInfo15::EnumerateGCHeapObjects() on its own, and leverage its
     * built-in runtime suspension logic.
     *
     * Parameters:
     * - callback: A function pointer to the callback function that will be invoked for each object in the GC heap.
     *            The callback function should accept an ObjectID and a void pointer as parameters and return a BOOL.
     * - callbackState: A void pointer that can be used to pass state information to the callback function.
     *
     * Returns:
     * - HRESULT: A code indicating the result of the operation. If the method succeeds,
     *           it returns S_OK. If it fails, it returns an error code.
     */
    HRESULT EnumerateGCHeapObjects(
        [in] ObjectCallback callback,
        [in] void* callbackState);
}

/*
* This interface lets you iterate over methods in the runtime.
*/

[
    object,
    uuid(FCCEE788-0088-454B-A811-C99F298D1942),
    pointer_default(unique),
    local
]
interface ICorProfilerMethodEnum : IUnknown
{
    HRESULT Skip([in] ULONG celt);

    HRESULT Reset();

    HRESULT Clone([out] ICorProfilerMethodEnum **ppEnum);

    HRESULT GetCount([out] ULONG *pcelt);

    HRESULT Next([in]  ULONG   celt,
        [out, size_is(celt), length_is(*pceltFetched)]
        COR_PRF_METHOD         elements[],
        [out] ULONG *          pceltFetched);
}

/*
 * This interface lets you iterate over threads in the runtime.
 */

[
    object,
    uuid(571194f7-25ed-419f-aa8b-7016b3159701),
    pointer_default(unique),
    local
]
interface ICorProfilerThreadEnum : IUnknown
{
    HRESULT Skip([in] ULONG celt);

    HRESULT Reset();

    HRESULT Clone([out] ICorProfilerThreadEnum **ppEnum);

    HRESULT GetCount([out] ULONG *pcelt);

    HRESULT Next([in]  ULONG            celt,
                 [out, size_is(celt), length_is(*pceltFetched)]
                       ThreadID         ids[],
                 [out] ULONG *          pceltFetched);
}


/*
 * This interface is given to the profiler in the GetAssemblyReferences() callback, to
 * allow the profiler to inform the CLR of assembly references that the profiler plans to
 * add later on during ModuleLoadFinished.  This improves the accuracy of the CLR assembly
 * reference closure walker, and its algorithms for determining whether assemblies may be shared
 *
 * This interface is valid for use only within the GetAssemblyReferences callback that passed
 * this interface to the profiler
 */
[
    object,
    uuid(66A78C24-2EEF-4F65-B45F-DD1D8038BF3C),
    pointer_default(unique),
    local
]
interface ICorProfilerAssemblyReferenceProvider : IUnknown
{
    // The profiler calls this for each target assembly it plans to reference from the
    // assembly specified in the wszAssemblyPath argument of the GetAssemblyReferences callback.
    HRESULT AddAssemblyReference(const COR_PRF_ASSEMBLY_REFERENCE_INFO * pAssemblyRefInfo);
};