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ZigGlobalObject.cpp
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#include "root.h"
#include "ZigGlobalObject.h"
#include "helpers.h"
#include "JavaScriptCore/ArgList.h"
#include "JavaScriptCore/JSImmutableButterfly.h"
#include "wtf/text/Base64.h"
#include "JavaScriptCore/BuiltinNames.h"
#include "JavaScriptCore/CallData.h"
#include "JavaScriptCore/CatchScope.h"
#include "JavaScriptCore/ClassInfo.h"
#include "JavaScriptCore/CodeBlock.h"
#include "JavaScriptCore/Completion.h"
#include "JavaScriptCore/DeferredWorkTimer.h"
#include "JavaScriptCore/Error.h"
#include "JavaScriptCore/ErrorInstance.h"
#include "JavaScriptCore/Exception.h"
#include "JavaScriptCore/ExceptionScope.h"
#include "JavaScriptCore/FunctionConstructor.h"
#include "JavaScriptCore/FunctionPrototype.h"
#include "JavaScriptCore/GetterSetter.h"
#include "JavaScriptCore/GlobalObjectMethodTable.h"
#include "JavaScriptCore/Heap.h"
#include "JavaScriptCore/Identifier.h"
#include "JavaScriptCore/InitializeThreading.h"
#include "JavaScriptCore/InternalFieldTuple.h"
#include "JavaScriptCore/InternalFunction.h"
#include "JavaScriptCore/JSArray.h"
#include "JavaScriptCore/JSCast.h"
#include "JavaScriptCore/JSCJSValue.h"
#include "JavaScriptCore/JSGlobalProxyInlines.h"
#include "JavaScriptCore/JSInternalPromise.h"
#include "JavaScriptCore/JSLock.h"
#include "JavaScriptCore/JSMap.h"
#include "JavaScriptCore/JSMicrotask.h"
#include "JavaScriptCore/JSModuleLoader.h"
#include "JavaScriptCore/JSModuleNamespaceObject.h"
#include "JavaScriptCore/JSModuleNamespaceObjectInlines.h"
#include "JavaScriptCore/JSModuleRecord.h"
#include "JavaScriptCore/JSNativeStdFunction.h"
#include "JavaScriptCore/JSObject.h"
#include "JavaScriptCore/JSObjectInlines.h"
#include "JavaScriptCore/JSPromise.h"
#include "JavaScriptCore/JSScriptFetchParameters.h"
#include "JavaScriptCore/JSSourceCode.h"
#include "JavaScriptCore/JSString.h"
#include "JavaScriptCore/JSWeakMap.h"
#include "JavaScriptCore/LazyClassStructure.h"
#include "JavaScriptCore/LazyClassStructureInlines.h"
#include "JavaScriptCore/ObjectConstructor.h"
#include "JavaScriptCore/ScriptExecutable.h"
#include "JavaScriptCore/ScriptFetchParameters.h"
#include "JavaScriptCore/SourceOrigin.h"
#include "JavaScriptCore/StackFrame.h"
#include "JavaScriptCore/StackVisitor.h"
#include "JavaScriptCore/VM.h"
#include "AddEventListenerOptions.h"
#include "AsyncContextFrame.h"
#include "BunClientData.h"
#include "BunObject.h"
#include "BunPlugin.h"
#include "BunProcess.h"
#include "BunWorkerGlobalScope.h"
#include "CallSite.h"
#include "CallSitePrototype.h"
#include "CommonJSModuleRecord.h"
#include "ConsoleObject.h"
#include "DOMWrapperWorld-class.h"
#include "ErrorStackTrace.h"
#include "IDLTypes.h"
#include "ImportMetaObject.h"
#include "JS2Native.h"
#include "JSAbortAlgorithm.h"
#include "JSAbortController.h"
#include "JSAbortSignal.h"
#include "JSBroadcastChannel.h"
#include "JSBuffer.h"
#include "JSBufferList.h"
#include "JSByteLengthQueuingStrategy.h"
#include "JSCloseEvent.h"
#include "JSCountQueuingStrategy.h"
#include "JSCustomEvent.h"
#include "JSDOMConvertBase.h"
#include "JSDOMConvertUnion.h"
#include "JSDOMException.h"
#include "JSDOMFile.h"
#include "JSDOMFormData.h"
#include "JSDOMURL.h"
#include "JSEnvironmentVariableMap.h"
#include "JSErrorEvent.h"
#include "JSEvent.h"
#include "JSEventEmitter.h"
#include "JSEventListener.h"
#include "JSEventTarget.h"
#include "JSFetchHeaders.h"
#include "JSFFIFunction.h"
#include "JSMessageChannel.h"
#include "JSMessageEvent.h"
#include "JSMessagePort.h"
#include "JSNextTickQueue.h"
#include "JSPerformance.h"
#include "JSPerformanceEntry.h"
#include "JSPerformanceMark.h"
#include "JSPerformanceMeasure.h"
#include "JSPerformanceObserver.h"
#include "JSPerformanceObserverEntryList.h"
#include "JSReadableByteStreamController.h"
#include "JSReadableStream.h"
#include "JSReadableStreamBYOBReader.h"
#include "JSReadableStreamBYOBRequest.h"
#include "JSReadableStreamDefaultController.h"
#include "JSReadableStreamDefaultReader.h"
#include "JSSink.h"
#include "JSSocketAddress.h"
#include "JSSQLStatement.h"
#include "JSStringDecoder.h"
#include "JSTextEncoder.h"
#include "JSTextEncoderStream.h"
#include "JSTextDecoderStream.h"
#include "JSTransformStream.h"
#include "JSTransformStreamDefaultController.h"
#include "JSURLSearchParams.h"
#include "JSWebSocket.h"
#include "JSWorker.h"
#include "JSWritableStream.h"
#include "JSWritableStreamDefaultController.h"
#include "JSWritableStreamDefaultWriter.h"
#include "libusockets.h"
#include "ModuleLoader.h"
#include "napi_external.h"
#include "napi_handle_scope.h"
#include "napi.h"
#include "NodeHTTP.h"
#include "NodeVM.h"
#include "Performance.h"
#include "ProcessBindingConstants.h"
#include "ProcessBindingTTYWrap.h"
#include "ProcessIdentifier.h"
#include "ReadableStream.h"
#include "SerializedScriptValue.h"
#include "StructuredClone.h"
#include "WebCoreJSBuiltins.h"
#include "webcrypto/JSCryptoKey.h"
#include "webcrypto/JSSubtleCrypto.h"
#include "ZigGeneratedClasses.h"
#include "ZigSourceProvider.h"
#include "UtilInspect.h"
#include "Base64Helpers.h"
#include "wtf/text/OrdinalNumber.h"
#include "ErrorCode.h"
#include "v8/shim/GlobalInternals.h"
#include "EventLoopTask.h"
#include "NodeModuleModule.h"
#include <JavaScriptCore/JSCBytecodeCacheVersion.h>
#if ENABLE(REMOTE_INSPECTOR)
#include "JavaScriptCore/RemoteInspectorServer.h"
#endif
#if !OS(WINDOWS)
#include <dlfcn.h>
#endif
#ifdef __APPLE__
#include <sys/sysctl.h>
#elif defined(__linux__)
// for sysconf
#include <unistd.h>
#endif
using namespace Bun;
BUN_DECLARE_HOST_FUNCTION(Bun__NodeUtil__jsParseArgs);
BUN_DECLARE_HOST_FUNCTION(BUN__HTTP2__getUnpackedSettings);
BUN_DECLARE_HOST_FUNCTION(BUN__HTTP2_getPackedSettings);
BUN_DECLARE_HOST_FUNCTION(BUN__HTTP2_assertSettings);
using JSGlobalObject = JSC::JSGlobalObject;
using Exception = JSC::Exception;
using JSValue = JSC::JSValue;
using JSString = JSC::JSString;
using JSModuleLoader = JSC::JSModuleLoader;
using JSModuleRecord = JSC::JSModuleRecord;
using Identifier = JSC::Identifier;
using SourceOrigin = JSC::SourceOrigin;
using JSObject = JSC::JSObject;
using JSNonFinalObject = JSC::JSNonFinalObject;
namespace JSCastingHelpers = JSC::JSCastingHelpers;
constexpr size_t DEFAULT_ERROR_STACK_TRACE_LIMIT = 10;
// #include <iostream>
static bool has_loaded_jsc = false;
Structure* createMemoryFootprintStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject);
extern "C" WebCore::Worker* WebWorker__getParentWorker(void*);
#ifndef BUN_WEBKIT_VERSION
#ifndef ASSERT_ENABLED
#warning "BUN_WEBKIT_VERSION is not defined. WebKit's cmakeconfig.h is supposed to define that. If you're building a release build locally, ignore this warning. If you're seeing this warning in CI, please file an issue."
#endif
#define WEBKIT_BYTECODE_CACHE_HASH_KEY __TIMESTAMP__
#else
#define WEBKIT_BYTECODE_CACHE_HASH_KEY BUN_WEBKIT_VERSION
#endif
static consteval unsigned getWebKitBytecodeCacheVersion()
{
return WTF::SuperFastHash::computeHash(WEBKIT_BYTECODE_CACHE_HASH_KEY);
}
#undef WEBKIT_BYTECODE_CACHE_HASH_KEY
extern "C" unsigned getJSCBytecodeCacheVersion()
{
return getWebKitBytecodeCacheVersion();
}
extern "C" void JSCInitialize(const char* envp[], size_t envc, void (*onCrash)(const char* ptr, size_t length), bool evalMode)
{
// NOLINTBEGIN
if (has_loaded_jsc)
return;
has_loaded_jsc = true;
JSC::Config::enableRestrictedOptions();
std::set_terminate([]() { Zig__GlobalObject__onCrash(); });
WTF::initializeMainThread();
JSC::initialize();
{
JSC::Options::AllowUnfinalizedAccessScope scope;
JSC::Options::useConcurrentJIT() = true;
// JSC::Options::useSigillCrashAnalyzer() = true;
JSC::Options::useWasm() = true;
JSC::Options::useSourceProviderCache() = true;
// JSC::Options::useUnlinkedCodeBlockJettisoning() = false;
JSC::Options::exposeInternalModuleLoader() = true;
JSC::Options::useSharedArrayBuffer() = true;
JSC::Options::useJIT() = true;
JSC::Options::useBBQJIT() = true;
JSC::Options::useUint8ArrayBase64Methods() = true;
JSC::Options::useJITCage() = false;
JSC::Options::useShadowRealm() = true;
JSC::Options::useV8DateParser() = true;
JSC::Options::evalMode() = evalMode;
JSC::Options::usePromiseTryMethod() = true;
JSC::Options::useRegExpEscape() = true;
JSC::Options::useIteratorHelpers() = true;
JSC::dangerouslyOverrideJSCBytecodeCacheVersion(getWebKitBytecodeCacheVersion());
#ifdef BUN_DEBUG
JSC::Options::showPrivateScriptsInStackTraces() = true;
#endif
if (LIKELY(envc > 0)) {
while (envc--) {
const char* env = (const char*)envp[envc];
// need to check for \0 so we might as well make this single pass
// strlen would check the end of the string
if (LIKELY(!(env[0] == 'B' && env[1] == 'U' && env[2] == 'N' && env[3] == '_' && env[4] == 'J' && env[5] == 'S' && env[6] == 'C' && env[7] == '_'))) {
continue;
}
if (UNLIKELY(!JSC::Options::setOption(env + 8))) {
onCrash(env, strlen(env));
}
}
}
JSC::Options::assertOptionsAreCoherent();
}
// NOLINTEND
}
extern "C" void* Bun__getVM();
extern "C" void Bun__setDefaultGlobalObject(Zig::GlobalObject* globalObject);
static JSValue formatStackTraceToJSValue(JSC::VM& vm, Zig::GlobalObject* globalObject, JSC::JSGlobalObject* lexicalGlobalObject, JSC::JSObject* errorObject, JSC::JSArray* callSites)
{
auto scope = DECLARE_THROW_SCOPE(vm);
// default formatting
size_t framesCount = callSites->length();
WTF::StringBuilder sb;
if (JSC::JSValue errorMessage = errorObject->getIfPropertyExists(lexicalGlobalObject, vm.propertyNames->message)) {
auto* str = errorMessage.toString(lexicalGlobalObject);
if (str->length() > 0) {
sb.append("Error: "_s);
sb.append(str->value(lexicalGlobalObject).data);
} else {
sb.append("Error"_s);
}
} else {
sb.append("Error"_s);
}
if (framesCount > 0) {
sb.append("\n"_s);
}
for (size_t i = 0; i < framesCount; i++) {
JSC::JSValue callSiteValue = callSites->getIndex(lexicalGlobalObject, i);
CallSite* callSite = JSC::jsDynamicCast<CallSite*>(callSiteValue);
sb.append(" at "_s);
callSite->formatAsString(vm, lexicalGlobalObject, sb);
RETURN_IF_EXCEPTION(scope, {});
if (i != framesCount - 1) {
sb.append("\n"_s);
}
}
return jsString(vm, sb.toString());
}
static JSValue formatStackTraceToJSValue(JSC::VM& vm, Zig::GlobalObject* globalObject, JSC::JSGlobalObject* lexicalGlobalObject, JSC::JSObject* errorObject, JSC::JSArray* callSites, JSValue prepareStackTrace)
{
auto scope = DECLARE_THROW_SCOPE(vm);
auto stackStringValue = formatStackTraceToJSValue(vm, globalObject, lexicalGlobalObject, errorObject, callSites);
RETURN_IF_EXCEPTION(scope, {});
if (prepareStackTrace && prepareStackTrace.isObject()) {
JSC::CallData prepareStackTraceCallData = JSC::getCallData(prepareStackTrace);
if (prepareStackTraceCallData.type != JSC::CallData::Type::None) {
// In Node, if you console.log(error.stack) inside Error.prepareStackTrace
// it will display the stack as a formatted string, so we have to do the same.
errorObject->putDirect(vm, vm.propertyNames->stack, stackStringValue, 0);
JSC::MarkedArgumentBuffer arguments;
arguments.append(errorObject);
arguments.append(callSites);
JSC::JSValue result = profiledCall(
lexicalGlobalObject,
JSC::ProfilingReason::Other,
prepareStackTrace,
prepareStackTraceCallData,
lexicalGlobalObject->m_errorStructure.constructor(globalObject),
arguments);
RETURN_IF_EXCEPTION(scope, stackStringValue);
if (result.isUndefinedOrNull()) {
result = jsUndefined();
}
return result;
}
}
return stackStringValue;
}
static JSValue formatStackTraceToJSValueWithoutPrepareStackTrace(JSC::VM& vm, Zig::GlobalObject* globalObject, JSC::JSGlobalObject* lexicalGlobalObject, JSC::JSObject* errorObject, JSC::JSArray* callSites)
{
JSValue prepareStackTrace = {};
if (lexicalGlobalObject->inherits<Zig::GlobalObject>()) {
if (auto prepare = globalObject->m_errorConstructorPrepareStackTraceValue.get()) {
prepareStackTrace = prepare;
}
} else {
auto scope = DECLARE_CATCH_SCOPE(vm);
auto* errorConstructor = lexicalGlobalObject->m_errorStructure.constructor(globalObject);
prepareStackTrace = errorConstructor->getIfPropertyExists(lexicalGlobalObject, JSC::Identifier::fromString(vm, "prepareStackTrace"_s));
if (scope.exception()) {
scope.clearException();
}
}
return formatStackTraceToJSValue(vm, globalObject, lexicalGlobalObject, errorObject, callSites, prepareStackTrace);
}
WTF::String Bun::formatStackTrace(
JSC::VM& vm,
Zig::GlobalObject* globalObject,
JSC::JSGlobalObject* lexicalGlobalObject,
const WTF::String& name,
const WTF::String& message,
OrdinalNumber& line,
OrdinalNumber& column,
WTF::String& sourceURL,
Vector<JSC::StackFrame>& stackTrace,
JSC::JSObject* errorInstance)
{
WTF::StringBuilder sb;
if (!name.isEmpty()) {
sb.append(name);
if (!message.isEmpty()) {
sb.append(": "_s);
sb.append(message);
}
} else if (!message.isEmpty()) {
sb.append(message);
}
// FIXME: why can size == 6 and capacity == 0?
// https://discord.com/channels/876711213126520882/1174901590457585765/1174907969419350036
size_t framesCount = stackTrace.size();
bool hasSet = false;
if (errorInstance) {
if (JSC::ErrorInstance* err = jsDynamicCast<JSC::ErrorInstance*>(errorInstance)) {
if (err->errorType() == ErrorType::SyntaxError && (stackTrace.isEmpty() || stackTrace.at(0).sourceURL(vm) != err->sourceURL())) {
// There appears to be an off-by-one error.
// The following reproduces the issue:
// /* empty comment */
// "".test(/[a-0]/);
auto originalLine = WTF::OrdinalNumber::fromOneBasedInt(err->line());
ZigStackFrame remappedFrame = {};
memset(&remappedFrame, 0, sizeof(ZigStackFrame));
remappedFrame.position.line_zero_based = originalLine.zeroBasedInt();
remappedFrame.position.column_zero_based = 0;
String sourceURLForFrame = err->sourceURL();
// If it's not a Zig::GlobalObject, don't bother source-mapping it.
if (globalObject && !sourceURLForFrame.isEmpty()) {
// https://github.com/oven-sh/bun/issues/3595
if (!sourceURLForFrame.isEmpty()) {
remappedFrame.source_url = Bun::toStringRef(sourceURLForFrame);
// This ensures the lifetime of the sourceURL is accounted for correctly
Bun__remapStackFramePositions(globalObject, &remappedFrame, 1);
sourceURLForFrame = remappedFrame.source_url.toWTFString();
}
}
// there is always a newline before each stack frame line, ensuring that the name + message
// exist on the first line, even if both are empty
sb.append("\n"_s);
sb.append(" at <parse> ("_s);
sb.append(remappedFrame.source_url.toWTFString());
if (remappedFrame.remapped) {
errorInstance->putDirect(vm, builtinNames(vm).originalLinePublicName(), jsNumber(originalLine.oneBasedInt()), 0);
hasSet = true;
line = remappedFrame.position.line();
}
if (remappedFrame.remapped) {
sb.append(":"_s);
sb.append(remappedFrame.position.line().oneBasedInt());
} else {
sb.append(":"_s);
sb.append(originalLine.oneBasedInt());
}
sb.append(")"_s);
}
}
}
if (framesCount == 0) {
ASSERT(stackTrace.isEmpty());
return sb.toString();
}
sb.append("\n"_s);
for (size_t i = 0; i < framesCount; i++) {
StackFrame& frame = stackTrace.at(i);
WTF::String functionName;
bool isBuiltinFunction = false;
sb.append(" at "_s);
if (auto codeblock = frame.codeBlock()) {
if (codeblock->isConstructor()) {
sb.append("new "_s);
}
// We cannot run this in FinalizeUnconditionally, as we cannot call getters there
// We check the errorInstance to see if we are allowed to access this memory.
if (errorInstance) {
switch (codeblock->codeType()) {
case JSC::CodeType::FunctionCode:
case JSC::CodeType::EvalCode: {
if (auto* callee = frame.callee()) {
if (auto* object = callee->getObject()) {
JSValue functionNameValue = object->getDirect(vm, vm.propertyNames->name);
if (functionNameValue && functionNameValue.isString()) {
functionName = functionNameValue.toWTFString(lexicalGlobalObject);
}
if (functionName.isEmpty()) {
auto catchScope = DECLARE_CATCH_SCOPE(vm);
functionName = JSC::getCalculatedDisplayName(vm, object);
if (catchScope.exception()) {
catchScope.clearException();
}
}
if (auto* unlinkedCodeBlock = codeblock->unlinkedCodeBlock()) {
if (unlinkedCodeBlock->isBuiltinFunction()) {
isBuiltinFunction = true;
}
}
}
}
break;
}
default: {
break;
}
}
}
}
if (functionName.isEmpty()) {
functionName = frame.functionName(vm);
}
if (functionName.isEmpty()) {
sb.append("<anonymous>"_s);
} else {
sb.append(functionName);
}
if (frame.hasLineAndColumnInfo()) {
ZigStackFrame remappedFrame = {};
LineColumn lineColumn = frame.computeLineAndColumn();
OrdinalNumber originalLine = OrdinalNumber::fromOneBasedInt(lineColumn.line);
OrdinalNumber originalColumn = OrdinalNumber::fromOneBasedInt(lineColumn.column);
remappedFrame.position.line_zero_based = originalLine.zeroBasedInt();
remappedFrame.position.column_zero_based = originalColumn.zeroBasedInt();
String sourceURLForFrame = frame.sourceURL(vm);
// Sometimes, the sourceURL is empty.
// For example, pages in Next.js.
if (sourceURLForFrame.isEmpty()) {
// hasLineAndColumnInfo() checks codeBlock(), so this is safe to access here.
const auto& source = frame.codeBlock()->source();
// source.isNull() is true when the SourceProvider is a null pointer.
if (!source.isNull()) {
auto* provider = source.provider();
// I'm not 100% sure we should show sourceURLDirective here.
if (!provider->sourceURLDirective().isEmpty()) {
sourceURLForFrame = provider->sourceURLDirective();
} else if (!provider->sourceURL().isEmpty()) {
sourceURLForFrame = provider->sourceURL();
} else {
const auto& origin = provider->sourceOrigin();
if (!origin.isNull()) {
sourceURLForFrame = origin.string();
}
}
}
}
bool isDefinitelyNotRunninginNodeVMGlobalObject = (globalObject == lexicalGlobalObject && globalObject);
bool isDefaultGlobalObjectInAFinalizer = (globalObject && !lexicalGlobalObject && !errorInstance);
if (isDefinitelyNotRunninginNodeVMGlobalObject || isDefaultGlobalObjectInAFinalizer) {
// https://github.com/oven-sh/bun/issues/3595
if (!sourceURLForFrame.isEmpty()) {
remappedFrame.source_url = Bun::toStringRef(sourceURLForFrame);
// This ensures the lifetime of the sourceURL is accounted for correctly
Bun__remapStackFramePositions(globalObject, &remappedFrame, 1);
sourceURLForFrame = remappedFrame.source_url.toWTFString();
}
}
if (!hasSet) {
hasSet = true;
line = remappedFrame.position.line();
column = remappedFrame.position.column();
sourceURL = frame.sourceURL(vm);
if (remappedFrame.remapped) {
if (errorInstance) {
errorInstance->putDirect(vm, builtinNames(vm).originalLinePublicName(), jsNumber(originalLine.oneBasedInt()), 0);
errorInstance->putDirect(vm, builtinNames(vm).originalColumnPublicName(), jsNumber(originalColumn.oneBasedInt()), 0);
}
}
}
sb.append(" ("_s);
if (sourceURLForFrame.isEmpty()) {
if (isBuiltinFunction) {
sb.append("native"_s);
} else {
sb.append("unknown"_s);
}
} else {
sb.append(sourceURLForFrame);
}
sb.append(":"_s);
sb.append(remappedFrame.position.line().oneBasedInt());
sb.append(":"_s);
sb.append(remappedFrame.position.column().oneBasedInt());
sb.append(")"_s);
} else {
sb.append(" (native)"_s);
}
if (i != framesCount - 1) {
sb.append("\n"_s);
}
}
return sb.toString();
}
// error.stack calls this function
static String computeErrorInfoWithoutPrepareStackTrace(
JSC::VM& vm,
Zig::GlobalObject* globalObject,
JSC::JSGlobalObject* lexicalGlobalObject,
Vector<StackFrame>& stackTrace,
OrdinalNumber& line,
OrdinalNumber& column,
String& sourceURL,
JSObject* errorInstance)
{
WTF::String name = "Error"_s;
WTF::String message;
if (errorInstance) {
// Note that we are not allowed to allocate memory in here. It's called inside a finalizer.
if (auto* instance = jsDynamicCast<ErrorInstance*>(errorInstance)) {
if (!lexicalGlobalObject) {
lexicalGlobalObject = errorInstance->globalObject();
}
name = instance->sanitizedNameString(lexicalGlobalObject);
message = instance->sanitizedMessageString(lexicalGlobalObject);
}
}
if (UNLIKELY(!globalObject)) {
globalObject = defaultGlobalObject();
}
return Bun::formatStackTrace(vm, globalObject, lexicalGlobalObject, name, message, line, column, sourceURL, stackTrace, errorInstance);
}
static JSValue computeErrorInfoWithPrepareStackTrace(JSC::VM& vm, Zig::GlobalObject* globalObject, JSC::JSGlobalObject* lexicalGlobalObject, Vector<StackFrame>& stackFrames, OrdinalNumber& line, OrdinalNumber& column, String& sourceURL, JSObject* errorObject, JSObject* prepareStackTrace)
{
auto scope = DECLARE_THROW_SCOPE(vm);
JSCStackTrace stackTrace = JSCStackTrace::fromExisting(vm, stackFrames);
// Note: we cannot use tryCreateUninitializedRestricted here because we cannot allocate memory inside initializeIndex()
MarkedArgumentBuffer callSites;
// Create the call sites (one per frame)
GlobalObject::createCallSitesFromFrames(globalObject, lexicalGlobalObject, stackTrace, callSites);
// We need to sourcemap it if it's a GlobalObject.
if (globalObject == lexicalGlobalObject) {
size_t framesCount = stackTrace.size();
ZigStackFrame remappedFrames[64];
framesCount = framesCount > 64 ? 64 : framesCount;
for (int i = 0; i < framesCount; i++) {
remappedFrames[i] = {};
remappedFrames[i].source_url = Bun::toStringRef(lexicalGlobalObject, stackTrace.at(i).sourceURL());
if (JSCStackFrame::SourcePositions* sourcePositions = stackTrace.at(i).getSourcePositions()) {
remappedFrames[i].position.line_zero_based = sourcePositions->line.zeroBasedInt();
remappedFrames[i].position.column_zero_based = sourcePositions->column.zeroBasedInt();
} else {
remappedFrames[i].position.line_zero_based = -1;
remappedFrames[i].position.column_zero_based = -1;
}
}
Bun__remapStackFramePositions(globalObject, remappedFrames, framesCount);
for (size_t i = 0; i < framesCount; i++) {
JSC::JSValue callSiteValue = callSites.at(i);
CallSite* callSite = JSC::jsDynamicCast<CallSite*>(callSiteValue);
if (remappedFrames[i].remapped) {
callSite->setColumnNumber(remappedFrames[i].position.column());
callSite->setLineNumber(remappedFrames[i].position.line());
}
}
}
JSArray* callSitesArray = JSC::constructArray(globalObject, globalObject->arrayStructureForIndexingTypeDuringAllocation(JSC::ArrayWithContiguous), callSites);
return formatStackTraceToJSValue(vm, globalObject, lexicalGlobalObject, errorObject, callSitesArray, prepareStackTrace);
}
static String computeErrorInfoToString(JSC::VM& vm, Vector<StackFrame>& stackTrace, OrdinalNumber& line, OrdinalNumber& column, String& sourceURL)
{
Zig::GlobalObject* globalObject = nullptr;
JSC::JSGlobalObject* lexicalGlobalObject = nullptr;
return computeErrorInfoWithoutPrepareStackTrace(vm, globalObject, lexicalGlobalObject, stackTrace, line, column, sourceURL, nullptr);
}
static JSValue computeErrorInfoToJSValueWithoutSkipping(JSC::VM& vm, Vector<StackFrame>& stackTrace, OrdinalNumber& line, OrdinalNumber& column, String& sourceURL, JSObject* errorInstance)
{
Zig::GlobalObject* globalObject = nullptr;
JSC::JSGlobalObject* lexicalGlobalObject = nullptr;
lexicalGlobalObject = errorInstance->globalObject();
globalObject = jsDynamicCast<Zig::GlobalObject*>(lexicalGlobalObject);
// Error.prepareStackTrace - https://v8.dev/docs/stack-trace-api#customizing-stack-traces
if (!globalObject) {
// node:vm will use a different JSGlobalObject
globalObject = defaultGlobalObject();
if (!globalObject->isInsideErrorPrepareStackTraceCallback) {
auto* errorConstructor = lexicalGlobalObject->m_errorStructure.constructor(lexicalGlobalObject);
if (JSValue prepareStackTrace = errorConstructor->getIfPropertyExists(lexicalGlobalObject, Identifier::fromString(vm, "prepareStackTrace"_s))) {
if (prepareStackTrace.isCell() && prepareStackTrace.isObject() && prepareStackTrace.isCallable()) {
globalObject->isInsideErrorPrepareStackTraceCallback = true;
auto result = computeErrorInfoWithPrepareStackTrace(vm, globalObject, lexicalGlobalObject, stackTrace, line, column, sourceURL, errorInstance, prepareStackTrace.getObject());
globalObject->isInsideErrorPrepareStackTraceCallback = false;
return result;
}
}
}
} else if (!globalObject->isInsideErrorPrepareStackTraceCallback) {
if (JSValue prepareStackTrace = globalObject->m_errorConstructorPrepareStackTraceValue.get()) {
if (prepareStackTrace) {
if (prepareStackTrace.isCallable()) {
globalObject->isInsideErrorPrepareStackTraceCallback = true;
auto result = computeErrorInfoWithPrepareStackTrace(vm, globalObject, lexicalGlobalObject, stackTrace, line, column, sourceURL, errorInstance, prepareStackTrace.getObject());
globalObject->isInsideErrorPrepareStackTraceCallback = false;
return result;
}
}
}
}
String result = computeErrorInfoWithoutPrepareStackTrace(vm, globalObject, lexicalGlobalObject, stackTrace, line, column, sourceURL, errorInstance);
return jsString(vm, result);
}
static JSValue computeErrorInfoToJSValue(JSC::VM& vm, Vector<StackFrame>& stackTrace, OrdinalNumber& line, OrdinalNumber& column, String& sourceURL, JSObject* errorInstance)
{
return computeErrorInfoToJSValueWithoutSkipping(vm, stackTrace, line, column, sourceURL, errorInstance);
}
// TODO: @paperdave: remove this wrapper and make the WTF::Function from JavaScriptCore expect OrdinalNumber instead of unsigned.
static String computeErrorInfoWrapperToString(JSC::VM& vm, Vector<StackFrame>& stackTrace, unsigned int& line_in, unsigned int& column_in, String& sourceURL)
{
OrdinalNumber line = OrdinalNumber::fromOneBasedInt(line_in);
OrdinalNumber column = OrdinalNumber::fromOneBasedInt(column_in);
WTF::String result = computeErrorInfoToString(vm, stackTrace, line, column, sourceURL);
line_in = line.oneBasedInt();
column_in = column.oneBasedInt();
return result;
}
static JSValue computeErrorInfoWrapperToJSValue(JSC::VM& vm, Vector<StackFrame>& stackTrace, unsigned int& line_in, unsigned int& column_in, String& sourceURL, JSObject* errorInstance)
{
OrdinalNumber line = OrdinalNumber::fromOneBasedInt(line_in);
OrdinalNumber column = OrdinalNumber::fromOneBasedInt(column_in);
JSValue result = computeErrorInfoToJSValue(vm, stackTrace, line, column, sourceURL, errorInstance);
line_in = line.oneBasedInt();
column_in = column.oneBasedInt();
return result;
}
static void checkIfNextTickWasCalledDuringMicrotask(JSC::VM& vm)
{
auto* globalObject = defaultGlobalObject();
if (auto nextTickQueueValue = globalObject->m_nextTickQueue.get()) {
auto* queue = jsCast<Bun::JSNextTickQueue*>(nextTickQueueValue);
globalObject->resetOnEachMicrotaskTick();
queue->drain(vm, globalObject);
}
}
static void cleanupAsyncHooksData(JSC::VM& vm)
{
auto* globalObject = defaultGlobalObject();
globalObject->m_asyncContextData.get()->putInternalField(vm, 0, jsUndefined());
globalObject->asyncHooksNeedsCleanup = false;
if (!globalObject->m_nextTickQueue) {
vm.setOnEachMicrotaskTick(&checkIfNextTickWasCalledDuringMicrotask);
checkIfNextTickWasCalledDuringMicrotask(vm);
} else {
vm.setOnEachMicrotaskTick(nullptr);
}
}
void Zig::GlobalObject::resetOnEachMicrotaskTick()
{
JSC::VM& vm = this->vm();
if (this->asyncHooksNeedsCleanup) {
vm.setOnEachMicrotaskTick(&cleanupAsyncHooksData);
} else {
if (this->m_nextTickQueue) {
vm.setOnEachMicrotaskTick(nullptr);
} else {
vm.setOnEachMicrotaskTick(&checkIfNextTickWasCalledDuringMicrotask);
}
}
}
extern "C" JSC__JSGlobalObject* Zig__GlobalObject__create(void* console_client, int32_t executionContextId, bool miniMode, bool evalMode, void* worker_ptr)
{
auto heapSize = miniMode ? JSC::HeapType::Small : JSC::HeapType::Large;
JSC::VM& vm = JSC::VM::create(heapSize).leakRef();
// This must happen before JSVMClientData::create
vm.heap.acquireAccess();
JSC::JSLockHolder locker(vm);
WebCore::JSVMClientData::create(&vm, Bun__getVM());
const auto createGlobalObject = [&]() -> Zig::GlobalObject* {
if (UNLIKELY(executionContextId > -1)) {
auto* structure = Zig::GlobalObject::createStructure(vm);
if (UNLIKELY(!structure)) {
return nullptr;
}
return Zig::GlobalObject::create(
vm,
structure,
static_cast<ScriptExecutionContextIdentifier>(executionContextId));
} else if (evalMode) {
auto* structure = Zig::EvalGlobalObject::createStructure(vm);
if (UNLIKELY(!structure)) {
return nullptr;
}
return Zig::EvalGlobalObject::create(
vm,
structure,
&Zig::EvalGlobalObject::s_globalObjectMethodTable);
} else {
auto* structure = Zig::GlobalObject::createStructure(vm);
if (UNLIKELY(!structure)) {
return nullptr;
}
return Zig::GlobalObject::create(
vm,
structure);
}
};
auto* globalObject = createGlobalObject();
if (UNLIKELY(!globalObject)) {
BUN_PANIC("Failed to allocate JavaScript global object. Did your computer run out of memory?");
}
globalObject->setConsole(console_client);
globalObject->isThreadLocalDefaultGlobalObject = true;
globalObject->setStackTraceLimit(DEFAULT_ERROR_STACK_TRACE_LIMIT); // Node.js defaults to 10
Bun__setDefaultGlobalObject(globalObject);
JSC::gcProtect(globalObject);
vm.setOnComputeErrorInfo(computeErrorInfoWrapperToString);
vm.setOnComputeErrorInfoJSValue(computeErrorInfoWrapperToJSValue);
vm.setOnEachMicrotaskTick([](JSC::VM& vm) -> void {
auto* globalObject = defaultGlobalObject();
if (auto nextTickQueue = globalObject->m_nextTickQueue.get()) {
globalObject->resetOnEachMicrotaskTick();
Bun::JSNextTickQueue* queue = jsCast<Bun::JSNextTickQueue*>(nextTickQueue);
queue->drain(vm, globalObject);
return;
}
});
if (executionContextId > -1) {
const auto initializeWorker = [&](WebCore::Worker& worker) -> void {
auto& options = worker.options();
if (options.bun.env) {
auto map = WTFMove(options.bun.env);
auto size = map->size();
// In theory, a GC could happen before we finish putting all the properties on the object.
// So we use a MarkedArgumentBuffer to ensure that the strings are not collected and we immediately put them on the object.
MarkedArgumentBuffer strings;
strings.ensureCapacity(map->size());
for (const auto& value : map->values()) {
strings.append(jsString(vm, value));
}
auto env = JSC::constructEmptyObject(globalObject, globalObject->objectPrototype(), size >= JSFinalObject::maxInlineCapacity ? JSFinalObject::maxInlineCapacity : size);
size_t i = 0;
for (auto k : *map) {
// They can have environment variables with numbers as keys.
// So we must use putDirectMayBeIndex to handle that.
env->putDirectMayBeIndex(globalObject, JSC::Identifier::fromString(vm, WTFMove(k.key)), strings.at(i++));
}
map->clear();
globalObject->m_processEnvObject.set(vm, globalObject, env);
}
// ensure remote termination works.
vm.ensureTerminationException();
vm.forbidExecutionOnTermination();
};
if (auto* worker = static_cast<WebCore::Worker*>(worker_ptr)) {
initializeWorker(*worker);
}
}
return globalObject;
}
JSC_DEFINE_HOST_FUNCTION(functionFulfillModuleSync,
(JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame* callFrame))
{
Zig::GlobalObject* globalObject = jsCast<Zig::GlobalObject*>(lexicalGlobalObject);
auto& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSC::JSValue key = callFrame->argument(0);
auto moduleKey = key.toWTFString(globalObject);
RETURN_IF_EXCEPTION(scope, {});
if (moduleKey.endsWith(".node"_s)) {
throwException(globalObject, scope, createTypeError(globalObject, "To load Node-API modules, use require() or process.dlopen instead of importSync."_s));
return {};
}
auto specifier = Bun::toString(moduleKey);
ErrorableResolvedSource res;
res.success = false;
res.result.err.code = 0;
res.result.err.ptr = nullptr;
JSValue result = Bun::fetchESMSourceCodeSync(
globalObject,
key,
&res,
&specifier,
&specifier,
nullptr);
if (scope.exception() || !result) {
RELEASE_AND_RETURN(scope, JSValue::encode(JSC::jsUndefined()));
}
globalObject->moduleLoader()->provideFetch(globalObject, key, jsCast<JSC::JSSourceCode*>(result)->sourceCode());
RELEASE_AND_RETURN(scope, JSValue::encode(JSC::jsUndefined()));
}
extern "C" void* Zig__GlobalObject__getModuleRegistryMap(JSC__JSGlobalObject* arg0)
{
if (JSC::JSObject* loader = JSC::jsDynamicCast<JSC::JSObject*>(arg0->moduleLoader())) {
JSC::JSMap* map = JSC::jsDynamicCast<JSC::JSMap*>(
loader->getDirect(arg0->vm(), JSC::Identifier::fromString(arg0->vm(), "registry"_s)));
JSC::JSMap* cloned = map->clone(arg0, arg0->vm(), arg0->mapStructure());
JSC::gcProtect(cloned);
return cloned;
}
return nullptr;
}
extern "C" bool Zig__GlobalObject__resetModuleRegistryMap(JSC__JSGlobalObject* globalObject,
void* map_ptr)
{
if (map_ptr == nullptr)
return false;
JSC::JSMap* map = reinterpret_cast<JSC::JSMap*>(map_ptr);
JSC::VM& vm = globalObject->vm();
if (JSC::JSObject* obj = JSC::jsDynamicCast<JSC::JSObject*>(globalObject->moduleLoader())) {
auto identifier = JSC::Identifier::fromString(globalObject->vm(), "registry"_s);
if (JSC::JSMap* oldMap = JSC::jsDynamicCast<JSC::JSMap*>(
obj->getDirect(globalObject->vm(), identifier))) {
vm.finalizeSynchronousJSExecution();
obj->putDirect(globalObject->vm(), identifier,
map->clone(globalObject, globalObject->vm(), globalObject->mapStructure()));
// vm.deleteAllLinkedCode(JSC::DeleteAllCodeEffort::DeleteAllCodeIfNotCollecting);
// JSC::Heap::PreventCollectionScope(vm.heap);
oldMap->clear(globalObject);
JSC::gcUnprotect(oldMap);
// vm.heap.completeAllJITPlans();
// vm.forEachScriptExecutableSpace([&](auto &spaceAndSet) {