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/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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"
#if ENABLE(WORKERS)
#include "WorkerScriptController.h"
#include "DOMTimer.h"
#include "ScriptCallStack.h"
#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "V8DOMMap.h"
#include "V8Proxy.h"
#include "V8WorkerContext.h"
#include "WorkerContext.h"
#include "WorkerContextExecutionProxy.h"
#include "WorkerObjectProxy.h"
#include "WorkerThread.h"
#include <v8.h>
namespace WebCore {
WorkerScriptController::WorkerScriptController(WorkerContext* workerContext)
: m_workerContext(workerContext)
, m_proxy(new WorkerContextExecutionProxy(workerContext))
, m_executionForbidden(false)
{
}
WorkerScriptController::~WorkerScriptController()
{
removeAllDOMObjectsInCurrentThread();
}
ScriptValue WorkerScriptController::evaluate(const ScriptSourceCode& sourceCode)
{
return evaluate(sourceCode, 0);
}
ScriptValue WorkerScriptController::evaluate(const ScriptSourceCode& sourceCode, ScriptValue* exception)
{
{
MutexLocker lock(m_sharedDataMutex);
if (m_executionForbidden)
return ScriptValue();
}
WorkerContextExecutionState state;
ScriptValue result = m_proxy->evaluate(sourceCode.source(), sourceCode.url().string(), WTF::toZeroBasedTextPosition(sourceCode.startPosition()), &state);
if (state.hadException) {
if (exception)
*exception = state.exception;
else
m_workerContext->reportException(state.errorMessage, state.lineNumber, state.sourceURL, 0);
}
return result;
}
void WorkerScriptController::forbidExecution(ForbidExecutionOption option)
{
// This function may be called from another thread.
MutexLocker lock(m_sharedDataMutex);
m_executionForbidden = true;
if (option == TerminateRunningScript)
v8::V8::TerminateExecution();
}
void WorkerScriptController::setException(ScriptValue exception)
{
throwError(*exception.v8Value());
}
WorkerScriptController* WorkerScriptController::controllerForContext()
{
// Happens on frame destruction, check otherwise GetCurrent() will crash.
if (!v8::Context::InContext())
return 0;
v8::Handle<v8::Context> context = v8::Context::GetCurrent();
v8::Handle<v8::Object> global = context->Global();
global = V8DOMWrapper::lookupDOMWrapper(V8WorkerContext::GetTemplate(), global);
// Return 0 if the current executing context is not the worker context.
if (global.IsEmpty())
return 0;
WorkerContext* workerContext = V8WorkerContext::toNative(global);
return workerContext->script();
}
} // namespace WebCore
#endif // ENABLE(WORKERS)
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