C++ Thread::Construct方法代码示例

// static 
void ThreadStore::AttachCurrentThread(bool fAcquireThreadStoreLock)
{
    //
    // step 1: ThreadStore::InitCurrentThread
    // step 2: add this thread to the ThreadStore
    //

    // The thread has been constructed, during which some data is initialized (like which RuntimeInstance the
    // thread belongs to), but it hasn't been added to the thread store because doing so takes a lock, which 
    // we want to avoid at construction time because the loader lock is held then.
    Thread * pAttachingThread = RawGetCurrentThread();

    // On CHK build, validate that our GetThread assembly implementation matches the C++ implementation using
    // TLS.
    CreateCurrentThreadBuffer();

    ASSERT(_fls_index != FLS_OUT_OF_INDEXES);
    Thread* pThreadFromCurrentFiber = (Thread*)PalFlsGetValue(_fls_index);

    if (pAttachingThread->IsInitialized())
    {
        if (pThreadFromCurrentFiber != pAttachingThread)
        {
            ASSERT_UNCONDITIONALLY("Multiple fibers encountered on a single thread");
            RhFailFast();
        }

        return;
    }

    if (pThreadFromCurrentFiber != NULL)
    {
        ASSERT_UNCONDITIONALLY("Multiple threads encountered from a single fiber");
        RhFailFast();
    }

    //
    // Init the thread buffer
    //
    pAttachingThread->Construct();
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);

    ThreadStore* pTS = GetThreadStore();
    ReaderWriterLock::WriteHolder write(&pTS->m_Lock, fAcquireThreadStoreLock);

    //
    // Set thread state to be attached
    //
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);
    pAttachingThread->m_ThreadStateFlags = Thread::TSF_Attached;

    pTS->m_ThreadList.PushHead(pAttachingThread);

    //
    // Associate the current fiber with the current thread.  This makes the current fiber the thread's "home"
    // fiber.  This fiber is the only fiber allowed to execute managed code on this thread.  When this fiber
    // is destroyed, we consider the thread to be destroyed.
    //
    PalFlsSetValue(_fls_index, pAttachingThread);
}

// static 
void ThreadStore::AttachCurrentThread(bool fAcquireThreadStoreLock)
{
    //
    // step 1: ThreadStore::InitCurrentThread
    // step 2: add this thread to the ThreadStore
    //

    // The thread has been constructed, during which some data is initialized (like which RuntimeInstance the
    // thread belongs to), but it hasn't been added to the thread store because doing so takes a lock, which 
    // we want to avoid at construction time because the loader lock is held then.
    Thread * pAttachingThread = RawGetCurrentThread();

    // On CHK build, validate that our GetThread assembly implementation matches the C++ implementation using
    // TLS.
    CreateCurrentThreadBuffer();

    // The thread was already initialized, so it is already attached
    if (pAttachingThread->IsInitialized())
    {
        return;
    }

    PalAttachThread(pAttachingThread);

    //
    // Init the thread buffer
    //
    pAttachingThread->Construct();
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);

    // The runtime holds the thread store lock for the duration of thread suspension for GC, so let's check to 
    // see if that's going on and, if so, use a proper wait instead of the RWL's spinning.  NOTE: when we are 
    // called with fAcquireThreadStoreLock==false, we are being called in a situation where the GC is trying to 
    // init a GC thread, so we must honor the flag to mean "do not block on GC" or else we will deadlock.
    if (fAcquireThreadStoreLock && (RhpTrapThreads != 0))
        RedhawkGCInterface::WaitForGCCompletion();

    ThreadStore* pTS = GetThreadStore();
    ReaderWriterLock::WriteHolder write(&pTS->m_Lock, fAcquireThreadStoreLock);

    //
    // Set thread state to be attached
    //
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);
    pAttachingThread->m_ThreadStateFlags = Thread::TSF_Attached;

    pTS->m_ThreadList.PushHead(pAttachingThread);
}

int pthread_create(pthread_t*__threadarg,
			const pthread_attr_t*__attr,
			void*(*__start_routine)(void *),
			void*__arg)
{
	if (NULL == __threadarg)
	{
		return -1;
	}
	Thread *thread = new Thread();
	RunnableProxy *proxy = new RunnableProxy();
	proxy->SetFunc(__start_routine);
	proxy->SetParameter(__arg);
	thread->Construct(*proxy);
	*__threadarg = thread;
	return (int)thread->Start();
}

// static 
void ThreadStore::AttachCurrentThread(bool fAcquireThreadStoreLock)
{
    //
    // step 1: ThreadStore::InitCurrentThread
    // step 2: add this thread to the ThreadStore
    //

    // The thread has been constructed, during which some data is initialized (like which RuntimeInstance the
    // thread belongs to), but it hasn't been added to the thread store because doing so takes a lock, which 
    // we want to avoid at construction time because the loader lock is held then.
    Thread * pAttachingThread = RawGetCurrentThread();

    // On CHK build, validate that our GetThread assembly implementation matches the C++ implementation using
    // TLS.
    CreateCurrentThreadBuffer();

    // The thread was already initialized, so it is already attached
    if (pAttachingThread->IsInitialized())
    {
        return;
    }

    PalAttachThread(pAttachingThread);

    //
    // Init the thread buffer
    //
    pAttachingThread->Construct();
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);

    ThreadStore* pTS = GetThreadStore();
    ReaderWriterLock::WriteHolder write(&pTS->m_Lock, fAcquireThreadStoreLock);

    //
    // Set thread state to be attached
    //
    ASSERT(pAttachingThread->m_ThreadStateFlags == Thread::TSF_Unknown);
    pAttachingThread->m_ThreadStateFlags = Thread::TSF_Attached;

    pTS->m_ThreadList.PushHead(pAttachingThread);
}