/*
- * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
+ * Copyright (C) 2006, 2007, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSContextRef.h"
-#include "JSContextRefPrivate.h"
+#include "JSContextRefInternal.h"
#include "APICast.h"
+#include "CallFrame.h"
#include "InitializeThreading.h"
#include "JSCallbackObject.h"
#include "JSClassRef.h"
#include "JSGlobalObject.h"
#include "JSObject.h"
-#include <wtf/Platform.h>
+#include "JSCInlines.h"
+#include "RuntimeFlags.h"
+#include "SourceProvider.h"
+#include "StackVisitor.h"
+#include <wtf/text/StringBuilder.h>
+#include <wtf/text/StringHash.h>
+
+#if ENABLE(REMOTE_INSPECTOR)
+#include "JSGlobalObjectDebuggable.h"
+#include "JSGlobalObjectInspectorController.h"
+#include "JSRemoteInspector.h"
+#endif
+
+#if ENABLE(INSPECTOR_ALTERNATE_DISPATCHERS)
+#include "JSContextRefInspectorSupport.h"
+#endif
#if OS(DARWIN)
#include <mach-o/dyld.h>
using namespace JSC;
+static RuntimeFlags javaScriptRuntimeFlags(const JSGlobalObject* globalObject)
+{
+ RuntimeFlags runtimeFlags = JSGlobalObject::javaScriptRuntimeFlags(globalObject);
+ runtimeFlags.setPromiseDisabled(true);
+ return runtimeFlags;
+}
+
+const GlobalObjectMethodTable JSC::javaScriptCoreAPIGlobalObjectMethodTable = { &JSGlobalObject::allowsAccessFrom, &JSGlobalObject::supportsProfiling, &JSGlobalObject::supportsRichSourceInfo, &JSGlobalObject::shouldInterruptScript, &javaScriptRuntimeFlags, nullptr, &JSGlobalObject::shouldInterruptScriptBeforeTimeout };
+
+// From the API's perspective, a context group remains alive iff
+// (a) it has been JSContextGroupRetained
+// OR
+// (b) one of its contexts has been JSContextRetained
+
JSContextGroupRef JSContextGroupCreate()
{
initializeThreading();
- return toRef(JSGlobalData::createNonDefault().releaseRef());
+ return toRef(&VM::createContextGroup().leakRef());
}
JSContextGroupRef JSContextGroupRetain(JSContextGroupRef group)
void JSContextGroupRelease(JSContextGroupRef group)
{
- toJS(group)->deref();
+ VM& vm = *toJS(group);
+
+ JSLockHolder locker(&vm);
+ vm.deref();
+}
+
+static bool internalScriptTimeoutCallback(ExecState* exec, void* callbackPtr, void* callbackData)
+{
+ JSShouldTerminateCallback callback = reinterpret_cast<JSShouldTerminateCallback>(callbackPtr);
+ JSContextRef contextRef = toRef(exec);
+ ASSERT(callback);
+ return callback(contextRef, callbackData);
+}
+
+static void createWatchdogIfNeeded(VM& vm)
+{
+ if (!vm.watchdog) {
+ vm.watchdog = std::make_unique<Watchdog>();
+
+ // The LLINT peeks into the Watchdog object directly. In order to do that,
+ // the LLINT assumes that the internal shape of a std::unique_ptr is the
+ // same as a plain C++ pointer, and loads the address of Watchdog from it.
+ RELEASE_ASSERT(*reinterpret_cast<Watchdog**>(&vm.watchdog) == vm.watchdog.get());
+ }
+}
+
+void JSContextGroupSetExecutionTimeLimit(JSContextGroupRef group, double limit, JSShouldTerminateCallback callback, void* callbackData)
+{
+ VM& vm = *toJS(group);
+ JSLockHolder locker(&vm);
+ createWatchdogIfNeeded(vm);
+ Watchdog& watchdog = *vm.watchdog;
+ if (callback) {
+ void* callbackPtr = reinterpret_cast<void*>(callback);
+ watchdog.setTimeLimit(vm, std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)), internalScriptTimeoutCallback, callbackPtr, callbackData);
+ } else
+ watchdog.setTimeLimit(vm, std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)));
}
+void JSContextGroupClearExecutionTimeLimit(JSContextGroupRef group)
+{
+ VM& vm = *toJS(group);
+ JSLockHolder locker(&vm);
+ createWatchdogIfNeeded(vm);
+ Watchdog& watchdog = *vm.watchdog;
+ watchdog.setTimeLimit(vm, std::chrono::microseconds::max());
+}
+
+// From the API's perspective, a global context remains alive iff it has been JSGlobalContextRetained.
+
JSGlobalContextRef JSGlobalContextCreate(JSClassRef globalObjectClass)
{
initializeThreading();
+
#if OS(DARWIN)
- // When running on Tiger or Leopard, or if the application was linked before JSGlobalContextCreate was changed
- // to use a unique JSGlobalData, we use a shared one for compatibility.
-#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD)
+ // If the application was linked before JSGlobalContextCreate was changed to use a unique VM,
+ // we use a shared one for backwards compatibility.
if (NSVersionOfLinkTimeLibrary("JavaScriptCore") <= webkitFirstVersionWithConcurrentGlobalContexts) {
-#else
- {
-#endif
- JSLock lock(LockForReal);
- return JSGlobalContextCreateInGroup(toRef(&JSGlobalData::sharedInstance()), globalObjectClass);
+ return JSGlobalContextCreateInGroup(toRef(&VM::sharedInstance()), globalObjectClass);
}
#endif // OS(DARWIN)
{
initializeThreading();
- JSLock lock(LockForReal);
- RefPtr<JSGlobalData> globalData = group ? PassRefPtr<JSGlobalData>(toJS(group)) : JSGlobalData::createNonDefault();
+ RefPtr<VM> vm = group ? PassRefPtr<VM>(toJS(group)) : VM::createContextGroup();
- APIEntryShim entryShim(globalData.get(), false);
-
-#if ENABLE(JSC_MULTIPLE_THREADS)
- globalData->makeUsableFromMultipleThreads();
-#endif
+ JSLockHolder locker(vm.get());
if (!globalObjectClass) {
- JSGlobalObject* globalObject = new (globalData.get()) JSGlobalObject;
+ JSGlobalObject* globalObject = JSGlobalObject::create(*vm, JSGlobalObject::createStructure(*vm, jsNull()), &javaScriptCoreAPIGlobalObjectMethodTable);
+#if ENABLE(REMOTE_INSPECTOR)
+ if (JSRemoteInspectorGetInspectionEnabledByDefault())
+ globalObject->setRemoteDebuggingEnabled(true);
+#endif
return JSGlobalContextRetain(toGlobalRef(globalObject->globalExec()));
}
- JSGlobalObject* globalObject = new (globalData.get()) JSCallbackObject<JSGlobalObject>(globalObjectClass);
+ JSGlobalObject* globalObject = JSCallbackObject<JSGlobalObject>::create(*vm, globalObjectClass, JSCallbackObject<JSGlobalObject>::createStructure(*vm, 0, jsNull()));
ExecState* exec = globalObject->globalExec();
JSValue prototype = globalObjectClass->prototype(exec);
if (!prototype)
prototype = jsNull();
- globalObject->resetPrototype(prototype);
+ globalObject->resetPrototype(*vm, prototype);
+#if ENABLE(REMOTE_INSPECTOR)
+ if (JSRemoteInspectorGetInspectionEnabledByDefault())
+ globalObject->setRemoteDebuggingEnabled(true);
+#endif
return JSGlobalContextRetain(toGlobalRef(exec));
}
JSGlobalContextRef JSGlobalContextRetain(JSGlobalContextRef ctx)
{
ExecState* exec = toJS(ctx);
- APIEntryShim entryShim(exec);
+ JSLockHolder locker(exec);
- JSGlobalData& globalData = exec->globalData();
- gcProtect(exec->dynamicGlobalObject());
- globalData.ref();
+ VM& vm = exec->vm();
+ gcProtect(exec->vmEntryGlobalObject());
+ vm.ref();
return ctx;
}
void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
ExecState* exec = toJS(ctx);
- JSLock lock(exec);
+ JSLockHolder locker(exec);
- JSGlobalData& globalData = exec->globalData();
- IdentifierTable* savedIdentifierTable = setCurrentIdentifierTable(globalData.identifierTable);
-
- gcUnprotect(exec->dynamicGlobalObject());
-
- if (globalData.refCount() == 2) { // One reference is held by JSGlobalObject, another added by JSGlobalContextRetain().
- // The last reference was released, this is our last chance to collect.
- globalData.heap.destroy();
- } else
- globalData.heap.collectAllGarbage();
-
- globalData.deref();
-
- setCurrentIdentifierTable(savedIdentifierTable);
+ VM& vm = exec->vm();
+ bool protectCountIsZero = Heap::heap(exec->vmEntryGlobalObject())->unprotect(exec->vmEntryGlobalObject());
+ if (protectCountIsZero)
+ vm.heap.reportAbandonedObjectGraph();
+ vm.deref();
}
JSObjectRef JSContextGetGlobalObject(JSContextRef ctx)
{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
ExecState* exec = toJS(ctx);
- APIEntryShim entryShim(exec);
+ JSLockHolder locker(exec);
- // It is necessary to call toThisObject to get the wrapper object when used with WebCore.
- return toRef(exec->lexicalGlobalObject()->toThisObject(exec));
+ return toRef(jsCast<JSObject*>(exec->lexicalGlobalObject()->methodTable()->toThis(exec->lexicalGlobalObject(), exec, NotStrictMode)));
}
JSContextGroupRef JSContextGetGroup(JSContextRef ctx)
{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
ExecState* exec = toJS(ctx);
- return toRef(&exec->globalData());
+ return toRef(&exec->vm());
}
JSGlobalContextRef JSContextGetGlobalContext(JSContextRef ctx)
{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
ExecState* exec = toJS(ctx);
- APIEntryShim entryShim(exec);
+ JSLockHolder locker(exec);
return toGlobalRef(exec->lexicalGlobalObject()->globalExec());
}
+
+JSStringRef JSGlobalContextCopyName(JSGlobalContextRef ctx)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder locker(exec);
+
+ String name = exec->vmEntryGlobalObject()->name();
+ if (name.isNull())
+ return 0;
+
+ return OpaqueJSString::create(name).leakRef();
+}
+
+void JSGlobalContextSetName(JSGlobalContextRef ctx, JSStringRef name)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder locker(exec);
+
+ exec->vmEntryGlobalObject()->setName(name ? name->string() : String());
+}
+
+
+class BacktraceFunctor {
+public:
+ BacktraceFunctor(StringBuilder& builder, unsigned remainingCapacityForFrameCapture)
+ : m_builder(builder)
+ , m_remainingCapacityForFrameCapture(remainingCapacityForFrameCapture)
+ {
+ }
+
+ StackVisitor::Status operator()(StackVisitor& visitor)
+ {
+ if (m_remainingCapacityForFrameCapture) {
+ // If callee is unknown, but we've not added any frame yet, we should
+ // still add the frame, because something called us, and gave us arguments.
+ JSObject* callee = visitor->callee();
+ if (!callee && visitor->index())
+ return StackVisitor::Done;
+
+ StringBuilder& builder = m_builder;
+ if (!builder.isEmpty())
+ builder.append('\n');
+ builder.append('#');
+ builder.appendNumber(visitor->index());
+ builder.append(' ');
+ builder.append(visitor->functionName());
+ builder.appendLiteral("() at ");
+ builder.append(visitor->sourceURL());
+ if (visitor->isJSFrame()) {
+ builder.append(':');
+ unsigned lineNumber;
+ unsigned unusedColumn;
+ visitor->computeLineAndColumn(lineNumber, unusedColumn);
+ builder.appendNumber(lineNumber);
+ }
+
+ if (!callee)
+ return StackVisitor::Done;
+
+ m_remainingCapacityForFrameCapture--;
+ return StackVisitor::Continue;
+ }
+ return StackVisitor::Done;
+ }
+
+private:
+ StringBuilder& m_builder;
+ unsigned m_remainingCapacityForFrameCapture;
+};
+
+JSStringRef JSContextCreateBacktrace(JSContextRef ctx, unsigned maxStackSize)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+ StringBuilder builder;
+ CallFrame* frame = exec->vm().topCallFrame;
+
+ ASSERT(maxStackSize);
+ BacktraceFunctor functor(builder, maxStackSize);
+ frame->iterate(functor);
+
+ return OpaqueJSString::create(builder.toString()).leakRef();
+}
+
+bool JSGlobalContextGetRemoteInspectionEnabled(JSGlobalContextRef ctx)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return false;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ return exec->vmEntryGlobalObject()->remoteDebuggingEnabled();
+}
+
+void JSGlobalContextSetRemoteInspectionEnabled(JSGlobalContextRef ctx, bool enabled)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ exec->vmEntryGlobalObject()->setRemoteDebuggingEnabled(enabled);
+}
+
+bool JSGlobalContextGetIncludesNativeCallStackWhenReportingExceptions(JSGlobalContextRef ctx)
+{
+#if ENABLE(REMOTE_INSPECTOR)
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return false;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
+ return globalObject->inspectorController().includesNativeCallStackWhenReportingExceptions();
+#else
+ UNUSED_PARAM(ctx);
+ return false;
+#endif
+}
+
+void JSGlobalContextSetIncludesNativeCallStackWhenReportingExceptions(JSGlobalContextRef ctx, bool includesNativeCallStack)
+{
+#if ENABLE(REMOTE_INSPECTOR)
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
+ globalObject->inspectorController().setIncludesNativeCallStackWhenReportingExceptions(includesNativeCallStack);
+#else
+ UNUSED_PARAM(ctx);
+ UNUSED_PARAM(includesNativeCallStack);
+#endif
+}
+
+#if USE(CF)
+CFRunLoopRef JSGlobalContextGetDebuggerRunLoop(JSGlobalContextRef ctx)
+{
+#if ENABLE(REMOTE_INSPECTOR)
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return nullptr;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ return exec->vmEntryGlobalObject()->inspectorDebuggable().debuggerRunLoop();
+#else
+ UNUSED_PARAM(ctx);
+ return nullptr;
+#endif
+}
+
+void JSGlobalContextSetDebuggerRunLoop(JSGlobalContextRef ctx, CFRunLoopRef runLoop)
+{
+#if ENABLE(REMOTE_INSPECTOR)
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ exec->vmEntryGlobalObject()->inspectorDebuggable().setDebuggerRunLoop(runLoop);
+#else
+ UNUSED_PARAM(ctx);
+ UNUSED_PARAM(runLoop);
+#endif
+}
+#endif // USE(CF)
+
+#if ENABLE(INSPECTOR_ALTERNATE_DISPATCHERS)
+Inspector::AugmentableInspectorController* JSGlobalContextGetAugmentableInspectorController(JSGlobalContextRef ctx)
+{
+ if (!ctx) {
+ ASSERT_NOT_REACHED();
+ return nullptr;
+ }
+
+ ExecState* exec = toJS(ctx);
+ JSLockHolder lock(exec);
+
+ return &exec->vmEntryGlobalObject()->inspectorController();
+}
+#endif
projects / apple / javascriptcore.git / blobdiff