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request.cpp
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
//*****************************************************************************
// File: request.cpp
//
//
// CorDataAccess::Request implementation.
//
//*****************************************************************************
#include "stdafx.h"
#include "typestring.h"
#include <gccover.h>
#include <virtualcallstub.h>
#ifdef FEATURE_COMINTEROP
#include <comcallablewrapper.h>
#endif // FEATURE_COMINTEROP
#ifdef FEATURE_COMWRAPPERS
#include <interoplibinterface.h>
#include <interoplibabi.h>
typedef DPTR(InteropLibInterface::ExternalObjectContextBase) PTR_ExternalObjectContext;
typedef DPTR(InteropLib::ABI::ManagedObjectWrapperLayout) PTR_ManagedObjectWrapper;
#endif // FEATURE_COMWRAPPERS
#ifndef TARGET_UNIX
// It is unfortunate having to include this header just to get the definition of GenericModeBlock
#include <msodw.h>
#endif // TARGET_UNIX
// To include definition of IsThrowableThreadAbortException
#include <exstatecommon.h>
#include "rejit.h"
#include "request_common.h"
// GC headers define these to EE-specific stuff that we don't want.
#undef EnterCriticalSection
#undef LeaveCriticalSection
#define PTR_CDADDR(ptr) TO_CDADDR(PTR_TO_TADDR(ptr))
#define HOST_CDADDR(host) TO_CDADDR(PTR_HOST_TO_TADDR(host))
#define SOSDacEnter() \
DAC_ENTER(); \
HRESULT hr = S_OK; \
EX_TRY \
{
#define SOSDacLeave() \
} \
EX_CATCH \
{ \
if (!DacExceptionFilter(GET_EXCEPTION(), this, &hr)) \
{ \
EX_RETHROW; \
} \
} \
EX_END_CATCH(SwallowAllExceptions) \
DAC_LEAVE();
// Use this when you don't want to instantiate an Object * in the host.
TADDR DACGetMethodTableFromObjectPointer(TADDR objAddr, ICorDebugDataTarget * target)
{
ULONG32 returned = 0;
TADDR Value = (TADDR)NULL;
HRESULT hr = target->ReadVirtual(objAddr, (PBYTE)&Value, sizeof(TADDR), &returned);
if ((hr != S_OK) || (returned != sizeof(TADDR)))
{
return (TADDR)NULL;
}
#if TARGET_64BIT
Value = Value & ~7; // equivalent to Object::GetGCSafeMethodTable()
#else
Value = Value & ~3; // equivalent to Object::GetGCSafeMethodTable()
#endif
return Value;
}
// Use this when you don't want to instantiate an Object * in the host.
PTR_SyncBlock DACGetSyncBlockFromObjectPointer(TADDR objAddr, ICorDebugDataTarget * target)
{
ULONG32 returned = 0;
DWORD Value = 0;
HRESULT hr = target->ReadVirtual(objAddr - sizeof(DWORD), (PBYTE)&Value, sizeof(DWORD), &returned);
if ((hr != S_OK) || (returned != sizeof(DWORD)))
{
return NULL;
}
if ((Value & (BIT_SBLK_IS_HASH_OR_SYNCBLKINDEX | BIT_SBLK_IS_HASHCODE)) != BIT_SBLK_IS_HASH_OR_SYNCBLKINDEX)
return NULL;
Value &= MASK_SYNCBLOCKINDEX;
PTR_SyncTableEntry ste = PTR_SyncTableEntry(dac_cast<TADDR>(g_pSyncTable) + (sizeof(SyncTableEntry) * Value));
return ste->m_SyncBlock;
}
BOOL DacValidateEEClass(PTR_EEClass pEEClass)
{
// Verify things are right.
// The EEClass method table pointer should match the method table.
// TODO: Microsoft, need another test for validity, this one isn't always true anymore.
BOOL retval = TRUE;
EX_TRY
{
PTR_MethodTable pMethodTable = pEEClass->GetMethodTable();
if (!pMethodTable)
{
// PREfix.
retval = FALSE;
}
else if (pEEClass != pMethodTable->GetClass())
{
retval = FALSE;
}
}
EX_CATCH
{
retval = FALSE; // Something is wrong
}
EX_END_CATCH(SwallowAllExceptions)
return retval;
}
BOOL DacValidateMethodTable(PTR_MethodTable pMT, BOOL &bIsFree)
{
bIsFree = FALSE;
if ((pMT == NULL) || dac_cast<TADDR>(pMT) == (TADDR)-1)
{
return FALSE;
}
// Verify things are right.
BOOL retval = FALSE;
EX_TRY
{
if (HOST_CDADDR(pMT) == HOST_CDADDR(g_pFreeObjectMethodTable))
{
bIsFree = TRUE;
}
else
{
// Standard fast check
if (!pMT->ValidateWithPossibleAV())
goto BadMethodTable;
// In rare cases, we've seen the standard check above pass when it shouldn't.
// Insert additional/ad-hoc tests below.
// Metadata token should look valid for a class
mdTypeDef td = pMT->GetCl();
if (td != mdTokenNil && TypeFromToken(td) != mdtTypeDef)
goto BadMethodTable;
// BaseSize should always be greater than 0 for valid objects (unless it's an interface)
// For strings, baseSize is not ptr-aligned
if (!pMT->IsInterface() && !pMT->IsString())
{
if (pMT->GetBaseSize() == 0 || !IS_ALIGNED(pMT->GetBaseSize(), sizeof(void *)))
goto BadMethodTable;
}
}
retval = TRUE;
BadMethodTable: ;
}
EX_CATCH
{
retval = FALSE; // Something is wrong
}
EX_END_CATCH(SwallowAllExceptions)
return retval;
}
BOOL DacValidateMD(PTR_MethodDesc pMD)
{
if ((pMD == NULL) || dac_cast<TADDR>(pMD) == (TADDR)-1)
{
return FALSE;
}
// Verify things are right.
BOOL retval = TRUE;
EX_TRY
{
PTR_MethodTable pMethodTable = pMD->GetMethodTable();
// Standard fast check
if ((pMethodTable == NULL) || dac_cast<TADDR>(pMethodTable) == (TADDR)-1)
{
retval = FALSE;
}
if (retval && !pMethodTable->ValidateWithPossibleAV())
{
retval = FALSE;
}
if (retval && (pMD->GetSlot() >= pMethodTable->GetNumVtableSlots() && !pMD->HasNonVtableSlot()))
{
retval = FALSE;
}
if (retval)
{
MethodDesc *pMDCheck = MethodDesc::GetMethodDescFromStubAddr(pMD->GetTemporaryEntryPoint(), TRUE);
if (PTR_HOST_TO_TADDR(pMD) != PTR_HOST_TO_TADDR(pMDCheck))
{
retval = FALSE;
}
}
if (retval && pMD->HasNativeCode() && !pMD->IsFCall())
{
PCODE jitCodeAddr = pMD->GetNativeCode();
MethodDesc *pMDCheck = ExecutionManager::GetCodeMethodDesc(jitCodeAddr);
if (pMDCheck)
{
// Check that the given MethodDesc matches the MethodDesc from
// the CodeHeader
if (PTR_HOST_TO_TADDR(pMD) != PTR_HOST_TO_TADDR(pMDCheck))
{
retval = FALSE;
}
}
else
{
retval = FALSE;
}
}
}
EX_CATCH
{
retval = FALSE; // Something is wrong
}
EX_END_CATCH(SwallowAllExceptions)
return retval;
}
BOOL DacValidateMD(LPCVOID pMD)
{
return DacValidateMD(dac_cast<PTR_MethodDesc>(pMD));
}
VOID GetJITMethodInfo (EECodeInfo * pCodeInfo, JITTypes *pJITType, CLRDATA_ADDRESS *pGCInfo)
{
DWORD dwType = pCodeInfo->GetJitManager()->GetCodeType();
if (IsMiIL(dwType))
{
*pJITType = TYPE_JIT;
}
else if (IsMiNative(dwType))
{
*pJITType = TYPE_PJIT;
}
else
{
*pJITType = TYPE_UNKNOWN;
}
*pGCInfo = (CLRDATA_ADDRESS)PTR_TO_TADDR(pCodeInfo->GetGCInfo());
}
HRESULT
ClrDataAccess::GetHillClimbingLogEntry(CLRDATA_ADDRESS addr, struct DacpHillClimbingLogEntry* entry)
{
return E_NOTIMPL;
}
HRESULT
ClrDataAccess::GetWorkRequestData(CLRDATA_ADDRESS addr, struct DacpWorkRequestData *workRequestData)
{
return E_NOTIMPL;
}
HRESULT
ClrDataAccess::GetThreadpoolData(struct DacpThreadpoolData *threadpoolData)
{
return E_NOTIMPL;
}
HRESULT ClrDataAccess::GetThreadStoreData(struct DacpThreadStoreData *threadStoreData)
{
SOSDacEnter();
ThreadStore* threadStore = ThreadStore::s_pThreadStore;
if (!threadStore)
{
hr = E_UNEXPECTED;
}
else
{
// initialize the fields of our local structure
threadStoreData->threadCount = threadStore->m_ThreadCount;
threadStoreData->unstartedThreadCount = threadStore->m_UnstartedThreadCount;
threadStoreData->backgroundThreadCount = threadStore->m_BackgroundThreadCount;
threadStoreData->pendingThreadCount = threadStore->m_PendingThreadCount;
threadStoreData->deadThreadCount = threadStore->m_DeadThreadCount;
threadStoreData->fHostConfig = FALSE;
// identify the "important" threads
threadStoreData->firstThread = HOST_CDADDR(threadStore->m_ThreadList.GetHead());
threadStoreData->finalizerThread = HOST_CDADDR(g_pFinalizerThread);
threadStoreData->gcThread = HOST_CDADDR(g_pSuspensionThread);
}
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetStressLogAddress(CLRDATA_ADDRESS *stressLog)
{
if (stressLog == NULL)
return E_INVALIDARG;
#ifdef STRESS_LOG
SOSDacEnter();
if (g_pStressLog.IsValid())
*stressLog = HOST_CDADDR(g_pStressLog);
else
hr = E_FAIL;
SOSDacLeave();
return hr;
#else
return E_NOTIMPL;
#endif // STRESS_LOG
}
HRESULT
ClrDataAccess::GetJitManagerList(unsigned int count, struct DacpJitManagerInfo managers[], unsigned int *pNeeded)
{
SOSDacEnter();
if (managers)
{
if (count >= 1)
{
EEJitManager * managerPtr = ExecutionManager::GetEEJitManager();
DacpJitManagerInfo *currentPtr = &managers[0];
currentPtr->managerAddr = HOST_CDADDR(managerPtr);
currentPtr->codeType = managerPtr->GetCodeType();
EEJitManager *eeJitManager = PTR_EEJitManager(PTR_HOST_TO_TADDR(managerPtr));
currentPtr->ptrHeapList = HOST_CDADDR(eeJitManager->m_pCodeHeap);
}
}
else if (pNeeded)
{
*pNeeded = 1;
}
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetMethodTableSlot(CLRDATA_ADDRESS mt, unsigned int slot, CLRDATA_ADDRESS *value)
{
if (mt == 0 || value == NULL)
return E_INVALIDARG;
SOSDacEnter();
PTR_MethodTable mTable = PTR_MethodTable(TO_TADDR(mt));
BOOL bIsFree = FALSE;
if (!DacValidateMethodTable(mTable, bIsFree))
{
hr = E_INVALIDARG;
}
else if (slot < mTable->GetNumVtableSlots())
{
// Now get the slot:
*value = mTable->GetRestoredSlot(slot);
}
else
{
hr = E_INVALIDARG;
MethodTable::IntroducedMethodIterator it(mTable);
for (; it.IsValid() && FAILED(hr); it.Next())
{
MethodDesc * pMD = it.GetMethodDesc();
if (pMD->GetSlot() == slot)
{
*value = pMD->GetMethodEntryPoint();
hr = S_OK;
}
}
}
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetCodeHeapList(CLRDATA_ADDRESS jitManager, unsigned int count, struct DacpJitCodeHeapInfo codeHeaps[], unsigned int *pNeeded)
{
if (jitManager == (CLRDATA_ADDRESS)NULL)
return E_INVALIDARG;
SOSDacEnter();
EEJitManager *pJitManager = PTR_EEJitManager(TO_TADDR(jitManager));
HeapList *heapList = pJitManager->m_pCodeHeap;
if (codeHeaps)
{
unsigned int i = 0;
while ((heapList != NULL) && (i < count))
{
CodeHeap *codeHeap = heapList->pHeap;
codeHeaps[i] = DACGetHeapInfoForCodeHeap(codeHeap);
heapList = heapList->hpNext;
i++;
}
if (pNeeded)
*pNeeded = i;
}
else if (pNeeded)
{
int i = 0;
while (heapList != NULL)
{
heapList = heapList->hpNext;
i++;
}
*pNeeded = i;
}
else
{
hr = E_INVALIDARG;
}
SOSDacLeave();
return hr;
}
DacpJitCodeHeapInfo ClrDataAccess::DACGetHeapInfoForCodeHeap(CodeHeap *heapAddr)
{
DacpJitCodeHeapInfo jitCodeHeapInfo;
TADDR targetVtblPtrForHeapType = VPTR_HOST_VTABLE_TO_TADDR(*(LPVOID*)heapAddr);
if (targetVtblPtrForHeapType == LoaderCodeHeap::VPtrTargetVTable())
{
LoaderCodeHeap *loaderCodeHeap = PTR_LoaderCodeHeap(PTR_HOST_TO_TADDR(heapAddr));
jitCodeHeapInfo.codeHeapType = CODEHEAP_LOADER;
jitCodeHeapInfo.LoaderHeap =
TO_CDADDR(PTR_HOST_MEMBER_TADDR(LoaderCodeHeap, loaderCodeHeap, m_LoaderHeap));
}
else if (targetVtblPtrForHeapType == HostCodeHeap::VPtrTargetVTable())
{
HostCodeHeap *hostCodeHeap = PTR_HostCodeHeap(PTR_HOST_TO_TADDR(heapAddr));
jitCodeHeapInfo.codeHeapType = CODEHEAP_HOST;
jitCodeHeapInfo.HostData.baseAddr = PTR_CDADDR(hostCodeHeap->m_pBaseAddr);
jitCodeHeapInfo.HostData.currentAddr = PTR_CDADDR(hostCodeHeap->m_pLastAvailableCommittedAddr);
}
else
{
jitCodeHeapInfo.codeHeapType = CODEHEAP_UNKNOWN;
}
return jitCodeHeapInfo;
}
HRESULT
ClrDataAccess::GetStackLimits(CLRDATA_ADDRESS threadPtr, CLRDATA_ADDRESS *lower,
CLRDATA_ADDRESS *upper, CLRDATA_ADDRESS *fp)
{
if (threadPtr == 0 || (lower == NULL && upper == NULL && fp == NULL))
return E_INVALIDARG;
SOSDacEnter();
Thread * thread = PTR_Thread(TO_TADDR(threadPtr));
if (lower)
*lower = TO_CDADDR(thread->GetCachedStackBase().GetAddr());
if (upper)
*upper = TO_CDADDR(thread->GetCachedStackLimit().GetAddr());
if (fp)
*fp = PTR_HOST_MEMBER_TADDR(Thread, thread, m_pFrame);
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetRegisterName(int regNum, unsigned int count, _Inout_updates_z_(count) WCHAR *buffer, unsigned int *pNeeded)
{
if (!buffer && !pNeeded)
return E_POINTER;
#ifdef TARGET_AMD64
static const WCHAR *regs[] =
{
W("rax"), W("rcx"), W("rdx"), W("rbx"), W("rsp"), W("rbp"), W("rsi"), W("rdi"),
W("r8"), W("r9"), W("r10"), W("r11"), W("r12"), W("r13"), W("r14"), W("r15"),
};
#elif defined(TARGET_ARM)
static const WCHAR *regs[] =
{
W("r0"),
W("r1"),
W("r2"),
W("r3"),
W("r4"),
W("r5"),
W("r6"),
W("r7"),
W("r8"), W("r9"), W("r10"), W("r11"), W("r12"), W("sp"), W("lr")
};
#elif defined(TARGET_ARM64)
static const WCHAR *regs[] =
{
W("X0"),
W("X1"),
W("X2"),
W("X3"),
W("X4"),
W("X5"),
W("X6"),
W("X7"),
W("X8"), W("X9"), W("X10"), W("X11"), W("X12"), W("X13"), W("X14"), W("X15"), W("X16"), W("X17"),
W("X18"), W("X19"), W("X20"), W("X21"), W("X22"), W("X23"), W("X24"), W("X25"), W("X26"), W("X27"),
W("X28"), W("Fp"), W("Lr"), W("Sp")
};
#elif defined(TARGET_X86)
static const WCHAR *regs[] =
{
W("eax"), W("ecx"), W("edx"), W("ebx"), W("esp"), W("ebp"), W("esi"), W("edi"),
};
#elif defined(TARGET_LOONGARCH64)
static const WCHAR *regs[] =
{
W("R0"), W("AT"), W("V0"), W("V1"),
W("A0"), W("A1"), W("A2"), W("A3"),
W("A4"), W("A5"), W("A6"), W("A7"),
W("T0"), W("T1"), W("T2"), W("T3"),
W("T8"), W("T9"), W("S0"), W("S1"),
W("S2"), W("S3"), W("S4"), W("S5"),
W("S6"), W("S7"), W("K0"), W("K1"),
W("GP"), W("SP"), W("FP"), W("RA")
};
#elif defined(TARGET_RISCV64)
static const WCHAR *regs[] =
{
W("R0"), W("RA"), W("SP"), W("GP"),
W("TP"), W("T0"), W("T1"), W("T2"),
W("FP"), W("S1"), W("A0"), W("A1"),
W("A2"), W("A3"), W("A4"), W("A5"),
W("A6"), W("A7"), W("S2"), W("S3"),
W("S4"), W("S5"), W("S6"), W("S7"),
W("S8"), W("S9"), W("S10"), W("S11"),
W("T3"), W("T4"), W("T5"), W("T6")
};
#endif
// Caller frame registers are encoded as "-(reg+1)".
bool callerFrame = regNum < 0;
if (callerFrame)
regNum = -regNum-1;
if ((unsigned int)regNum >= ARRAY_SIZE(regs))
return E_UNEXPECTED;
const WCHAR callerPrefix[] = W("caller.");
// Include null terminator in prefixLen/regLen because wcscpy_s will fail otherwise
unsigned int prefixLen = (unsigned int)ARRAY_SIZE(callerPrefix);
unsigned int regLen = (unsigned int)u16_strlen(regs[regNum]) + 1;
unsigned int needed = (callerFrame ? prefixLen - 1 : 0) + regLen;
if (pNeeded)
*pNeeded = needed;
if (buffer)
{
WCHAR* curr = buffer;
WCHAR* end = buffer + count;
unsigned int destSize = count;
if (curr < end && callerFrame)
{
unsigned int toCopy = prefixLen < destSize ? prefixLen : destSize;
wcscpy_s(curr, toCopy, callerPrefix);
// Point to null terminator
toCopy--;
curr += toCopy;
destSize -= toCopy;
}
if (curr < end)
{
unsigned int toCopy = regLen < destSize ? regLen : destSize;
wcscpy_s(curr, toCopy, regs[regNum]);
// Point to null terminator
toCopy--;
curr += toCopy;
destSize -= toCopy;
}
if (count < needed)
return S_FALSE;
}
return S_OK;
}
HRESULT
ClrDataAccess::GetStackReferences(DWORD osThreadID, ISOSStackRefEnum **ppEnum)
{
if (ppEnum == NULL)
return E_POINTER;
SOSDacEnter();
DacStackReferenceWalker *walker = new (nothrow) DacStackReferenceWalker(this, osThreadID, false);
if (walker == NULL)
{
hr = E_OUTOFMEMORY;
}
else
{
hr = walker->Init();
if (SUCCEEDED(hr))
hr = walker->QueryInterface(__uuidof(ISOSStackRefEnum), (void**)ppEnum);
if (FAILED(hr))
{
delete walker;
*ppEnum = NULL;
}
}
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetThreadFromThinlockID(UINT thinLockId, CLRDATA_ADDRESS *pThread)
{
if (pThread == NULL)
return E_INVALIDARG;
SOSDacEnter();
Thread *thread = g_pThinLockThreadIdDispenser->IdToThread(thinLockId);
*pThread = PTR_HOST_TO_TADDR(thread);
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetThreadAllocData(CLRDATA_ADDRESS addr, struct DacpAllocData *data)
{
if (data == NULL)
return E_POINTER;
SOSDacEnter();
Thread* thread = PTR_Thread(TO_TADDR(addr));
data->allocBytes = TO_CDADDR(thread->m_alloc_context.alloc_bytes);
data->allocBytesLoh = TO_CDADDR(thread->m_alloc_context.alloc_bytes_uoh);
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetHeapAllocData(unsigned int count, struct DacpGenerationAllocData *data, unsigned int *pNeeded)
{
if (data == 0 && pNeeded == NULL)
return E_INVALIDARG;
SOSDacEnter();
#if defined(FEATURE_SVR_GC)
if (GCHeapUtilities::IsServerHeap())
{
hr = GetServerAllocData(count, data, pNeeded);
}
else
#endif //FEATURE_SVR_GC
{
if (pNeeded)
*pNeeded = 1;
if (data && count >= 1)
{
DPTR(unused_generation) table = g_gcDacGlobals->generation_table;
for (unsigned int i=0; i < *g_gcDacGlobals->max_gen + 2; i++)
{
dac_generation entry = GenerationTableIndex(table, i);
data[0].allocData[i].allocBytes = (CLRDATA_ADDRESS)(ULONG_PTR) entry.allocation_context.alloc_bytes;
data[0].allocData[i].allocBytesLoh = (CLRDATA_ADDRESS)(ULONG_PTR) entry.allocation_context.alloc_bytes_uoh;
}
}
}
SOSDacLeave();
return hr;
}
HRESULT
ClrDataAccess::GetThreadData(CLRDATA_ADDRESS threadAddr, struct DacpThreadData *threadData)
{
SOSDacEnter();
// marshal the Thread object from the target
Thread* thread = PTR_Thread(TO_TADDR(threadAddr));
// initialize our local copy from the marshaled target Thread instance
ZeroMemory (threadData, sizeof(DacpThreadData));
threadData->corThreadId = thread->m_ThreadId;
threadData->osThreadId = (DWORD)thread->m_OSThreadId;
threadData->state = thread->m_State;
threadData->preemptiveGCDisabled = thread->m_fPreemptiveGCDisabled;
threadData->allocContextPtr = TO_CDADDR(thread->m_alloc_context.alloc_ptr);
threadData->allocContextLimit = TO_CDADDR(thread->m_alloc_context.alloc_limit);
threadData->fiberData = (CLRDATA_ADDRESS)NULL;
threadData->pFrame = PTR_CDADDR(thread->m_pFrame);
threadData->context = PTR_CDADDR(thread->m_pDomain);
threadData->domain = PTR_CDADDR(thread->m_pDomain);
threadData->lockCount = (DWORD)-1;
#ifndef TARGET_UNIX
threadData->teb = TO_CDADDR(thread->m_pTEB);
#else
threadData->teb = (CLRDATA_ADDRESS)NULL;
#endif
threadData->lastThrownObjectHandle =
TO_CDADDR(thread->m_LastThrownObjectHandle);
threadData->nextThread =
HOST_CDADDR(ThreadStore::s_pThreadStore->m_ThreadList.GetNext(thread));
#ifdef FEATURE_EH_FUNCLETS
if (thread->m_ExceptionState.m_pCurrentTracker)
{
threadData->firstNestedException = PTR_HOST_TO_TADDR(
thread->m_ExceptionState.m_pCurrentTracker->m_pPrevNestedInfo);
}
#else
threadData->firstNestedException = PTR_HOST_TO_TADDR(
thread->m_ExceptionState.m_currentExInfo.m_pPrevNestedInfo);
#endif // FEATURE_EH_FUNCLETS
SOSDacLeave();
return hr;
}
#ifdef FEATURE_REJIT
void CopyNativeCodeVersionToReJitData(NativeCodeVersion nativeCodeVersion, NativeCodeVersion activeCodeVersion, DacpReJitData * pReJitData)
{
pReJitData->rejitID = nativeCodeVersion.GetILCodeVersion().GetVersionId();
pReJitData->NativeCodeAddr = nativeCodeVersion.GetNativeCode();
if (nativeCodeVersion != activeCodeVersion)
{
pReJitData->flags = DacpReJitData::kReverted;
}
else
{
switch (nativeCodeVersion.GetILCodeVersion().GetRejitState())
{
default:
_ASSERTE(!"Unknown SharedRejitInfo state. DAC should be updated to understand this new state.");
pReJitData->flags = DacpReJitData::kUnknown;
break;
case ILCodeVersion::kStateRequested:
pReJitData->flags = DacpReJitData::kRequested;
break;
case ILCodeVersion::kStateActive:
pReJitData->flags = DacpReJitData::kActive;
break;
}
}
}
#endif // FEATURE_REJIT
//---------------------------------------------------------------------------------------
//
// Given a method desc addr, this loads up DacpMethodDescData and multiple DacpReJitDatas
// with data on that method
//
// Arguments:
// * methodDesc - MD to look up
// * ip - IP address of interest (e.g., from an !ip2md call). This is used to ensure
// the rejitted version corresponding to this IP is returned. May be NULL if you
// don't care.
// * methodDescData - [out] DacpMethodDescData to populate
// * cRevertedRejitVersions - Number of entries allocated in rgRevertedRejitData
// array
// * rgRevertedRejitData - [out] Array of DacpReJitDatas to populate with rejitted
// rejit version data
// * pcNeededRevertedRejitData - [out] If cRevertedRejitVersions==0, the total
// number of available rejit versions (including the current version) is
// returned here. Else, the number of reverted rejit data actually fetched is
// returned here.
//
// Return Value:
// HRESULT indicating success or failure.
//
HRESULT ClrDataAccess::GetMethodDescData(
CLRDATA_ADDRESS methodDesc,
CLRDATA_ADDRESS ip,
struct DacpMethodDescData *methodDescData,
ULONG cRevertedRejitVersions,
DacpReJitData * rgRevertedRejitData,
ULONG * pcNeededRevertedRejitData)
{
if (methodDesc == 0)
return E_INVALIDARG;
if ((cRevertedRejitVersions != 0) && (rgRevertedRejitData == NULL))
{
return E_INVALIDARG;
}
if ((rgRevertedRejitData != NULL) && (pcNeededRevertedRejitData == NULL))
{
// If you're asking for reverted rejit data, you'd better ask for the number of
// elements we return
return E_INVALIDARG;
}
SOSDacEnter();
PTR_MethodDesc pMD = PTR_MethodDesc(TO_TADDR(methodDesc));
if (!DacValidateMD(pMD))
{
hr = E_INVALIDARG;
}
else
{
ZeroMemory(methodDescData, sizeof(DacpMethodDescData));
if (rgRevertedRejitData != NULL)
ZeroMemory(rgRevertedRejitData, sizeof(*rgRevertedRejitData) * cRevertedRejitVersions);
if (pcNeededRevertedRejitData != NULL)
*pcNeededRevertedRejitData = 0;
NativeCodeVersion requestedNativeCodeVersion, activeNativeCodeVersion;
if (ip != (CLRDATA_ADDRESS)NULL)
{
requestedNativeCodeVersion = ExecutionManager::GetNativeCodeVersion(CLRDATA_ADDRESS_TO_TADDR(ip));
}
else
{
#ifdef FEATURE_CODE_VERSIONING
activeNativeCodeVersion = pMD->GetCodeVersionManager()->GetActiveILCodeVersion(pMD).GetActiveNativeCodeVersion(pMD);
#else
activeNativeCodeVersion = NativeCodeVersion(pMD);
#endif
requestedNativeCodeVersion = activeNativeCodeVersion;
}
methodDescData->requestedIP = ip;
methodDescData->bIsDynamic = (pMD->IsLCGMethod()) ? TRUE : FALSE;
methodDescData->wSlotNumber = pMD->GetSlot();
if (!requestedNativeCodeVersion.IsNull() && requestedNativeCodeVersion.GetNativeCode() != (PCODE)NULL)
{
methodDescData->bHasNativeCode = TRUE;
methodDescData->NativeCodeAddr = TO_CDADDR(PCODEToPINSTR(requestedNativeCodeVersion.GetNativeCode()));
}
else
{
methodDescData->bHasNativeCode = FALSE;
methodDescData->NativeCodeAddr = (CLRDATA_ADDRESS)-1;
}
methodDescData->AddressOfNativeCodeSlot = pMD->HasNativeCodeSlot() ? TO_CDADDR(dac_cast<TADDR>(pMD->GetAddrOfNativeCodeSlot())) : (CLRDATA_ADDRESS)NULL;
methodDescData->MDToken = pMD->GetMemberDef();
methodDescData->MethodDescPtr = methodDesc;
methodDescData->MethodTablePtr = HOST_CDADDR(pMD->GetMethodTable());
methodDescData->ModulePtr = HOST_CDADDR(pMD->GetModule());
#ifdef FEATURE_REJIT
// If rejit info is appropriate, get the following:
// * ReJitInfo for the current, active version of the method
// * ReJitInfo for the requested IP (for !ip2md and !u)
// * ReJitInfos for all reverted versions of the method (up to
// cRevertedRejitVersions)
//
// Minidumps will not have all this rejit info, and failure to get rejit info
// should not be fatal. So enclose all rejit stuff in a try.
EX_TRY
{
CodeVersionManager *pCodeVersionManager = pMD->GetCodeVersionManager();
// Current ReJitInfo
if (activeNativeCodeVersion.IsNull())
{
ILCodeVersion activeILCodeVersion = pCodeVersionManager->GetActiveILCodeVersion(pMD);
activeNativeCodeVersion = activeILCodeVersion.GetActiveNativeCodeVersion(pMD);
}
CopyNativeCodeVersionToReJitData(
activeNativeCodeVersion,
activeNativeCodeVersion,
&methodDescData->rejitDataCurrent);
// Requested ReJitInfo
_ASSERTE(methodDescData->rejitDataRequested.rejitID == 0);
if (ip != (CLRDATA_ADDRESS)NULL && !requestedNativeCodeVersion.IsNull())
{
CopyNativeCodeVersionToReJitData(
requestedNativeCodeVersion,
activeNativeCodeVersion,
&methodDescData->rejitDataRequested);
}
// Total number of jitted rejit versions
ULONG cJittedRejitVersions;
if (SUCCEEDED(ReJitManager::GetReJITIDs(pMD, 0 /* cReJitIds */, &cJittedRejitVersions, NULL /* reJitIds */)))
{
methodDescData->cJittedRejitVersions = cJittedRejitVersions;
}
// Reverted ReJitInfos
if (rgRevertedRejitData == NULL)
{
// No reverted rejit versions will be returned, but maybe caller wants a
// count of all versions
if (pcNeededRevertedRejitData != NULL)
{
*pcNeededRevertedRejitData = methodDescData->cJittedRejitVersions;
}
}
else
{
// Caller wants some reverted rejit versions. Gather reverted rejit version data to return
ULONG cReJitIds;
StackSArray<ReJITID> reJitIds;
// Prepare array to populate with rejitids. "+ 1" because GetReJITIDs
// returns all available rejitids, including the rejitid for the one non-reverted
// current version.
ReJITID *rgReJitIds = reJitIds.OpenRawBuffer(cRevertedRejitVersions + 1);
if (rgReJitIds != NULL)
{
hr = ReJitManager::GetReJITIDs(pMD, cRevertedRejitVersions + 1, &cReJitIds, rgReJitIds);
if (SUCCEEDED(hr))
{
// Go through rejitids. For each reverted one, populate a entry in rgRevertedRejitData
reJitIds.CloseRawBuffer(cReJitIds);
ULONG iRejitDataReverted = 0;
ILCodeVersion activeVersion = pCodeVersionManager->GetActiveILCodeVersion(pMD);
for (COUNT_T i = 0;
(i < cReJitIds) && (iRejitDataReverted < cRevertedRejitVersions);
i++)
{
ILCodeVersion ilCodeVersion = pCodeVersionManager->GetILCodeVersion(pMD, reJitIds[i]);
if ((ilCodeVersion.IsNull()) ||
(ilCodeVersion == activeVersion))
{
continue;
}
NativeCodeVersion activeRejitChild = ilCodeVersion.GetActiveNativeCodeVersion(pMD);
CopyNativeCodeVersionToReJitData(
activeRejitChild,
activeNativeCodeVersion,
&rgRevertedRejitData[iRejitDataReverted]);
iRejitDataReverted++;
}
// pcNeededRevertedRejitData != NULL as per condition at top of function (cuz rgRevertedRejitData !=
// NULL).
*pcNeededRevertedRejitData = iRejitDataReverted;
}
}
}