void* WorkerThread::workerThread()
{
{
MutexLocker lock(m_threadCreationMutex);
m_workerContext = createWorkerContext(m_startupData->m_scriptURL, m_startupData->m_userAgent);
if (m_runLoop.terminated()) {
// The worker was terminated before the thread had a chance to run. Since the context didn't exist yet,
// forbidExecution() couldn't be called from stop().
m_workerContext->script()->forbidExecution();
}
}
WorkerScriptController* script = m_workerContext->script();
script->evaluate(ScriptSourceCode(m_startupData->m_sourceCode, m_startupData->m_scriptURL));
// Free the startup data to cause its member variable deref's happen on the worker's thread (since
// all ref/derefs of these objects are happening on the thread at this point). Note that
// WorkerThread::~WorkerThread happens on a different thread where it was created.
m_startupData.clear();
runEventLoop();
ThreadIdentifier threadID = m_threadID;
ASSERT(m_workerContext->hasOneRef());
// The below assignment will destroy the context, which will in turn notify messaging proxy.
// We cannot let any objects survive past thread exit, because no other thread will run GC or otherwise destroy them.
m_workerContext = 0;
// The thread object may be already destroyed from notification now, don't try to access "this".
detachThread(threadID);
return 0;
}
void executeScriptInWorker(WorkerThread* worker, WebWaitableEvent* waitEvent)
{
WorkerScriptController* scriptController = worker->workerGlobalScope()->script();
bool evaluateResult = scriptController->evaluate(ScriptSourceCode("var counter = 0; ++counter;"));
ASSERT_UNUSED(evaluateResult, evaluateResult);
waitEvent->signal();
}
void WorkerThread::workerThread()
{
// Propagate the mainThread's fenv to workers.
#if PLATFORM(IOS)
FloatingPointEnvironment::singleton().propagateMainThreadEnvironment();
#endif
#if PLATFORM(GTK)
GRefPtr<GMainContext> mainContext = adoptGRef(g_main_context_new());
g_main_context_push_thread_default(mainContext.get());
#endif
{
LockHolder lock(m_threadCreationMutex);
m_workerGlobalScope = createWorkerGlobalScope(m_startupData->m_scriptURL, m_startupData->m_userAgent, m_startupData->m_contentSecurityPolicyResponseHeaders, m_startupData->m_shouldBypassMainWorldContentSecurityPolicy, WTFMove(m_startupData->m_topOrigin));
if (m_runLoop.terminated()) {
// The worker was terminated before the thread had a chance to run. Since the context didn't exist yet,
// forbidExecution() couldn't be called from stop().
m_workerGlobalScope->script()->forbidExecution();
}
}
WorkerScriptController* script = m_workerGlobalScope->script();
script->evaluate(ScriptSourceCode(m_startupData->m_sourceCode, m_startupData->m_scriptURL));
// Free the startup data to cause its member variable deref's happen on the worker's thread (since
// all ref/derefs of these objects are happening on the thread at this point). Note that
// WorkerThread::~WorkerThread happens on a different thread where it was created.
m_startupData = nullptr;
runEventLoop();
#if PLATFORM(GTK)
g_main_context_pop_thread_default(mainContext.get());
#endif
ThreadIdentifier threadID = m_threadID;
ASSERT(m_workerGlobalScope->hasOneRef());
// The below assignment will destroy the context, which will in turn notify messaging proxy.
// We cannot let any objects survive past thread exit, because no other thread will run GC or otherwise destroy them.
m_workerGlobalScope = nullptr;
// Clean up WebCore::ThreadGlobalData before WTF::WTFThreadData goes away!
threadGlobalData().destroy();
// The thread object may be already destroyed from notification now, don't try to access "this".
detachThread(threadID);
}
void ScheduledAction::execute(WorkerContext* workerContext)
{
// In a Worker, the execution should always happen on a worker thread.
ASSERT(workerContext->thread()->threadID() == currentThread());
WorkerScriptController* scriptController = workerContext->script();
if (m_function) {
JSWorkerContext* contextWrapper = scriptController->workerContextWrapper();
executeFunctionInContext(contextWrapper, contextWrapper, workerContext);
} else {
ScriptSourceCode code(m_code, workerContext->url());
scriptController->evaluate(code);
}
}
void ScheduledAction::execute(WorkerContext* workerContext)
{
// In a Worker, the execution should always happen on a worker thread.
ASSERT(workerContext->thread()->threadID() == currentThread());
WorkerScriptController* scriptController = workerContext->script();
if (!m_function.IsEmpty() && m_function->IsFunction()) {
v8::HandleScope handleScope;
v8::Handle<v8::Context> v8Context = v8::Local<v8::Context>::New(m_context.get());
ASSERT(!v8Context.IsEmpty());
v8::Context::Scope scope(v8Context);
m_function->Call(v8Context->Global(), m_argc, m_argv);
} else
scriptController->evaluate(m_code);
}
void WorkerThread::workerThread()
{
// Propagate the mainThread's fenv to workers.
#if PLATFORM(IOS)
fesetenv(&mainThreadFEnv);
#endif
{
MutexLocker lock(m_threadCreationMutex);
m_workerGlobalScope = createWorkerGlobalScope(m_startupData->m_scriptURL, m_startupData->m_userAgent, std::move(m_startupData->m_groupSettings), m_startupData->m_contentSecurityPolicy, m_startupData->m_contentSecurityPolicyType, m_startupData->m_topOrigin.release());
if (m_runLoop.terminated()) {
// The worker was terminated before the thread had a chance to run. Since the context didn't exist yet,
// forbidExecution() couldn't be called from stop().
m_workerGlobalScope->script()->forbidExecution();
}
}
WorkerScriptController* script = m_workerGlobalScope->script();
#if ENABLE(INSPECTOR)
InspectorInstrumentation::willEvaluateWorkerScript(workerGlobalScope(), m_startupData->m_startMode);
#endif
script->evaluate(ScriptSourceCode(m_startupData->m_sourceCode, m_startupData->m_scriptURL));
// Free the startup data to cause its member variable deref's happen on the worker's thread (since
// all ref/derefs of these objects are happening on the thread at this point). Note that
// WorkerThread::~WorkerThread happens on a different thread where it was created.
m_startupData.clear();
runEventLoop();
ThreadIdentifier threadID = m_threadID;
ASSERT(m_workerGlobalScope->hasOneRef());
// The below assignment will destroy the context, which will in turn notify messaging proxy.
// We cannot let any objects survive past thread exit, because no other thread will run GC or otherwise destroy them.
m_workerGlobalScope = 0;
// Clean up WebCore::ThreadGlobalData before WTF::WTFThreadData goes away!
threadGlobalData().destroy();
// The thread object may be already destroyed from notification now, don't try to access "this".
detachThread(threadID);
}
