Merge 'wip/next' into dev

Change-Id: Iff9ee5e23bb326c4371ec8ed81d56f2f05d680e9

1 files changed, 250 insertions, 80 deletions

diff --git a/Source/JavaScriptCore/API/JSContextRef.cpp b/Source/JavaScriptCore/API/JSContextRef.cpp
index 3869e87bf..98cd8b030 100644
--- a/Source/JavaScriptCore/API/JSContextRef.cpp
+++ b/Source/JavaScriptCore/API/JSContextRef.cpp
@@ -1,5 +1,5 @@
 /*
- * 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
@@ -10,36 +10,47 @@
  *    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 <interpreter/CallFrame.h>
-#include <interpreter/Interpreter.h>
 #include "JSCallbackObject.h"
 #include "JSClassRef.h"
 #include "JSGlobalObject.h"
 #include "JSObject.h"
-#include "Operations.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>
 
@@ -56,7 +67,7 @@ using namespace JSC;
 JSContextGroupRef JSContextGroupCreate()
 {
     initializeThreading();
-    return toRef(VM::createContextGroup().leakRef());
+    return toRef(&VM::createContextGroup().leakRef());
 }
 
 JSContextGroupRef JSContextGroupRetain(JSContextGroupRef group)
@@ -67,16 +78,10 @@ JSContextGroupRef JSContextGroupRetain(JSContextGroupRef group)
 
 void JSContextGroupRelease(JSContextGroupRef group)
 {
-    IdentifierTable* savedIdentifierTable;
     VM& vm = *toJS(group);
 
-    {
-        JSLockHolder lock(vm);
-        savedIdentifierTable = wtfThreadData().setCurrentIdentifierTable(vm.identifierTable);
-        vm.deref();
-    }
-
-    wtfThreadData().setCurrentIdentifierTable(savedIdentifierTable);
+    JSLockHolder locker(&vm);
+    vm.deref();
 }
 
 static bool internalScriptTimeoutCallback(ExecState* exec, void* callbackPtr, void* callbackData)
@@ -90,21 +95,21 @@ static bool internalScriptTimeoutCallback(ExecState* exec, void* callbackPtr, vo
 void JSContextGroupSetExecutionTimeLimit(JSContextGroupRef group, double limit, JSShouldTerminateCallback callback, void* callbackData)
 {
     VM& vm = *toJS(group);
-    APIEntryShim entryShim(&vm);
-    Watchdog& watchdog = vm.watchdog;
+    JSLockHolder locker(&vm);
+    Watchdog& watchdog = vm.ensureWatchdog();
     if (callback) {
         void* callbackPtr = reinterpret_cast<void*>(callback);
-        watchdog.setTimeLimit(vm, limit, internalScriptTimeoutCallback, callbackPtr, callbackData);
+        watchdog.setTimeLimit(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)), internalScriptTimeoutCallback, callbackPtr, callbackData);
     } else
-        watchdog.setTimeLimit(vm, limit);
+        watchdog.setTimeLimit(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::duration<double>(limit)));
 }
 
 void JSContextGroupClearExecutionTimeLimit(JSContextGroupRef group)
 {
     VM& vm = *toJS(group);
-    APIEntryShim entryShim(&vm);
-    Watchdog& watchdog = vm.watchdog;
-    watchdog.setTimeLimit(vm, std::numeric_limits<double>::infinity());
+    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.
@@ -130,11 +135,14 @@ JSGlobalContextRef JSGlobalContextCreateInGroup(JSContextGroupRef group, JSClass
 
     RefPtr<VM> vm = group ? PassRefPtr<VM>(toJS(group)) : VM::createContextGroup();
 
-    APIEntryShim entryShim(vm.get(), false);
-    vm->makeUsableFromMultipleThreads();
+    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()));
     }
 
@@ -144,37 +152,34 @@ JSGlobalContextRef JSGlobalContextCreateInGroup(JSContextGroupRef group, JSClass
     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);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     VM& vm = exec->vm();
-    gcProtect(exec->dynamicGlobalObject());
+    gcProtect(exec->vmEntryGlobalObject());
     vm.ref();
     return ctx;
 }
 
 void JSGlobalContextRelease(JSGlobalContextRef ctx)
 {
-    IdentifierTable* savedIdentifierTable;
     ExecState* exec = toJS(ctx);
-    {
-        JSLockHolder lock(exec);
-
-        VM& vm = exec->vm();
-        savedIdentifierTable = wtfThreadData().setCurrentIdentifierTable(vm.identifierTable);
-
-        bool protectCountIsZero = Heap::heap(exec->dynamicGlobalObject())->unprotect(exec->dynamicGlobalObject());
-        if (protectCountIsZero)
-            vm.heap.reportAbandonedObjectGraph();
-        vm.deref();
-    }
+    JSLockHolder locker(exec);
 
-    wtfThreadData().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)
@@ -184,10 +189,9 @@ JSObjectRef JSContextGetGlobalObject(JSContextRef ctx)
         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()->methodTable()->toThisObject(exec->lexicalGlobalObject(), exec));
+    return toRef(jsCast<JSObject*>(exec->lexicalGlobalObject()->methodTable()->toThis(exec->lexicalGlobalObject(), exec, NotStrictMode)));
 }
 
 JSContextGroupRef JSContextGetGroup(JSContextRef ctx)
@@ -207,11 +211,90 @@ JSGlobalContextRef JSContextGetGlobalContext(JSContextRef ctx)
         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) {
@@ -221,41 +304,128 @@ JSStringRef JSContextCreateBacktrace(JSContextRef ctx, unsigned maxStackSize)
     ExecState* exec = toJS(ctx);
     JSLockHolder lock(exec);
     StringBuilder builder;
-    Vector<StackFrame> stackTrace;
-    Interpreter::getStackTrace(&exec->vm(), stackTrace, maxStackSize);
-
-    for (size_t i = 0; i < stackTrace.size(); i++) {
-        String urlString;
-        String functionName;
-        StackFrame& frame = stackTrace[i];
-        JSValue function = frame.callee.get();
-        if (frame.callee)
-            functionName = frame.friendlyFunctionName(exec);
-        else {
-            // Caller is unknown, but if frame is empty we should still add the frame, because
-            // something called us, and gave us arguments.
-            if (i)
-                break;
-        }
-        unsigned lineNumber;
-        unsigned column;
-        frame.computeLineAndColumn(lineNumber, column);
-        if (!builder.isEmpty())
-            builder.append('\n');
-        builder.append('#');
-        builder.appendNumber(i);
-        builder.append(' ');
-        builder.append(functionName);
-        builder.appendLiteral("() at ");
-        builder.append(urlString);
-        if (frame.codeType != StackFrameNativeCode) {
-            builder.append(':');
-            builder.appendNumber(lineNumber);
-        }
-        if (!function)
-            break;
-    }
+    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().targetRunLoop();
+#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().setTargetRunLoop(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