webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 431 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/API/JSContextRef.cpp b/Source/JavaScriptCore/API/JSContextRef.cpp
new file mode 100644
index 000000000..886754a03
--- /dev/null
+++ b/Source/JavaScriptCore/API/JSContextRef.cpp
@@ -0,0 +1,431 @@
+/*
+ * 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
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    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 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 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.
+ */
+
+#include "config.h"
+#include "JSContextRef.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 "JSCInlines.h"
+#include "SourceProvider.h"
+#include "StackVisitor.h"
+#include "Watchdog.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>
+
+static const int32_t webkitFirstVersionWithConcurrentGlobalContexts = 0x2100500; // 528.5.0
+#endif
+
+using namespace JSC;
+
+// 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(&VM::createContextGroup().leakRef());
+}
+
+JSContextGroupRef JSContextGroupRetain(JSContextGroupRef group)
+{
+    toJS(group)->ref();
+    return group;
+}
+
+void JSContextGroupRelease(JSContextGroupRef group)
+{
+    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);
+}
+
+void JSContextGroupSetExecutionTimeLimit(JSContextGroupRef group, double limit, JSShouldTerminateCallback callback, void* callbackData)
+{
+    VM& vm = *toJS(group);
+    JSLockHolder locker(&vm);
+    Watchdog& watchdog = vm.ensureWatchdog();
+    if (callback) {
+        void* callbackPtr = reinterpret_cast<void*>(callback);
+        watchdog.setTimeLimit(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)), internalScriptTimeoutCallback, callbackPtr, callbackData);
+    } else
+        watchdog.setTimeLimit(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)));
+}
+
+void JSContextGroupClearExecutionTimeLimit(JSContextGroupRef group)
+{
+    VM& vm = *toJS(group);
+    JSLockHolder locker(&vm);
+    if (vm.watchdog)
+        vm.watchdog->setTimeLimit(Watchdog::noTimeLimit);
+}
+
+// From the API's perspective, a global context remains alive iff it has been JSGlobalContextRetained.
+
+JSGlobalContextRef JSGlobalContextCreate(JSClassRef globalObjectClass)
+{
+    initializeThreading();
+
+#if OS(DARWIN)
+    // 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) {
+        return JSGlobalContextCreateInGroup(toRef(&VM::sharedInstance()), globalObjectClass);
+    }
+#endif // OS(DARWIN)
+
+    return JSGlobalContextCreateInGroup(0, globalObjectClass);
+}
+
+JSGlobalContextRef JSGlobalContextCreateInGroup(JSContextGroupRef group, JSClassRef globalObjectClass)
+{
+    initializeThreading();
+
+    RefPtr<VM> vm = group ? PassRefPtr<VM>(toJS(group)) : VM::createContextGroup();
+
+    JSLockHolder locker(vm.get());
+
+    if (!globalObjectClass) {
+        JSGlobalObject* globalObject = JSGlobalObject::create(*vm, JSGlobalObject::createStructure(*vm, jsNull()));
+#if ENABLE(REMOTE_INSPECTOR)
+        if (JSRemoteInspectorGetInspectionEnabledByDefault())
+            globalObject->setRemoteDebuggingEnabled(true);
+#endif
+        return JSGlobalContextRetain(toGlobalRef(globalObject->globalExec()));
+    }
+
+    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(*vm, prototype);
+#if ENABLE(REMOTE_INSPECTOR)
+    if (JSRemoteInspectorGetInspectionEnabledByDefault())
+        globalObject->setRemoteDebuggingEnabled(true);
+#endif
+    return JSGlobalContextRetain(toGlobalRef(exec));
+}
+
+JSGlobalContextRef JSGlobalContextRetain(JSGlobalContextRef ctx)
+{
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    VM& vm = exec->vm();
+    gcProtect(exec->vmEntryGlobalObject());
+    vm.ref();
+    return ctx;
+}
+
+void JSGlobalContextRelease(JSGlobalContextRef ctx)
+{
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    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);
+    JSLockHolder locker(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->vm());
+}
+
+JSGlobalContextRef JSContextGetGlobalContext(JSContextRef ctx)
+{
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    ExecState* exec = toJS(ctx);
+    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