void ThreadState::detachMainThread()
{
// Enter a safe point before trying to acquire threadAttachMutex
// to avoid dead lock if another thread is preparing for GC, has acquired
// threadAttachMutex and waiting for other threads to pause or reach a
// safepoint.
ThreadState* state = mainThreadState();
// 1. Finish sweeping.
state->completeSweep();
{
SafePointAwareMutexLocker locker(threadAttachMutex(), NoHeapPointersOnStack);
// 2. Add the main thread's heap pages to the orphaned pool.
state->cleanupPages();
// 3. Detach the main thread.
ASSERT(attachedThreads().contains(state));
attachedThreads().remove(state);
state->~ThreadState();
}
shutdownHeapIfNecessary();
}
void ThreadState::shutdown()
{
mainThreadState()->~ThreadState();
}
void ThreadState::init(intptr_t* startOfStack)
{
s_threadSpecific = new WTF::ThreadSpecific<ThreadState*>();
new(s_mainThreadStateStorage) ThreadState(startOfStack);
attachedThreads().add(mainThreadState());
}
