[Webkit-unassigned] [Bug 59801] fast/workers/storage/use-same-database-in-page-and-workers.html sometimes asserts in WorkerThread::workerThread

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=59801





--- Comment #2 from Michael Nordman <michaeln at google.com>  2011-04-29 13:15:33 PST ---
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());  ******* TRIPPING ON THIS (?) *******

    // 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;

    // 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);

    return 0;
}

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