C++ InitializeConditionVariable函数代码示例

int main(void)
{
	InitializeConditionVariable(&BufferNotEmpty);
	InitializeConditionVariable(&BufferNotFull);
	InitializeCriticalSection(&BufferLock);

	DWORD id;
	HANDLE hProducer1 = CreateThread(NULL, 0, ProducerThreadProc, (PVOID)1, 0, &id);
	HANDLE hConsumer1 = CreateThread(NULL, 0, ConsumerThreadProc, (PVOID)1, 0, &id);
	HANDLE hConsumer2 = CreateThread(NULL, 0, ConsumerThreadProc, (PVOID)2, 0, &id);
	puts("Press enter to stop...");
	getchar();
	EnterCriticalSection(&BufferLock);
	StopRequested = TRUE;
	LeaveCriticalSection(&BufferLock);

	WakeAllConditionVariable(&BufferNotFull);
	WakeAllConditionVariable(&BufferNotEmpty);

	WaitForSingleObject(hProducer1, INFINITE);
	WaitForSingleObject(hConsumer1, INFINITE);
	WaitForSingleObject(hConsumer2, INFINITE);
	printf("TotalItemsProduced: %u, TotalItemsConsumed: %u\r\n", TotalItemsProduced, TotalItemsConsumed);


	CloseHandle(hProducer1);
	CloseHandle(hConsumer1);
	CloseHandle(hConsumer2);


	system("pause");
	return 0;
}

BOOL Dlg_OnInitDialog(HWND hWnd, HWND hWndFocus, LPARAM lParam) {

   chSETDLGICONS(hWnd, IDI_QUEUE);

   g_hWnd = hWnd; // Used by client/server threads to show status

   // Prepare the SRWLock to be used
   InitializeSRWLock(&g_srwLock);

   // Prepare the condition variables to be used
   InitializeConditionVariable(&g_cvReadyToConsume);
   InitializeConditionVariable(&g_cvReadyToProduce);

   // Will be set to TRUE in order to end threads
   g_fShutdown = FALSE;

   // Create the writer threads
   DWORD dwThreadID;
   for (int x = 0; x < 4; x++)
      g_hThreads[g_nNumThreads++] = 
         chBEGINTHREADEX(NULL, 0, WriterThread, (PVOID) (INT_PTR) x, 
            0, &dwThreadID);

   // Create the reader threads
   for (int x = 0; x < 2; x++)
      g_hThreads[g_nNumThreads++] = 
         chBEGINTHREADEX(NULL, 0, ReaderThread, (PVOID) (INT_PTR) x, 
            0, &dwThreadID);

   return(TRUE);
}

DWORD QueueInitialize (QUEUE_OBJECT *q, DWORD msize, DWORD nmsgs)
{
    /* Initialize queue, including its mutex and events */
    /* Allocate storage for all messages. */

    if ((q->msgArray = calloc (nmsgs, msize)) == NULL) return 1;
    q->qFirst = q->qLast = 0;
    q->qSize = nmsgs;

    InitializeSRWLock(&q->qGuard);
    InitializeConditionVariable(&q->qNe);
    InitializeConditionVariable(&q->qNf);
    return 0; /* No error */
}

Error Cond::create(Cond **returnValue)
{
    Cond *cond = new Cond;
    InitializeConditionVariable(&cond->mNativeCond);
    *returnValue = cond;
    return Error(0);
}

// Constructor
drwnThreadPool::drwnThreadPool(const unsigned size) :
    _nThreads(0), _threads(NULL), _args(NULL)
{
#ifdef DRWN_USE_PTHREADS
    _nThreads = (size > MAX_THREADS) ? MAX_THREADS : size;
    if (_nThreads > 0) {
        _threads = new pthread_t[_nThreads];
        _args = new drwnThreadArgs[_nThreads];
    }
    pthread_mutex_init(&_mutex, NULL);
    pthread_cond_init(&_cond, NULL);
    _bQuit = true;

    _bProfilerEnabled = drwnCodeProfiler::enabled;
#endif

#ifdef DRWN_USE_WIN32THREADS
    _nThreads = (size > MAX_THREADS) ? MAX_THREADS : size;
    if (_nThreads > 0) {
        _threads = new HANDLE[_nThreads];
        _args = new drwnThreadArgs[_nThreads];
    }

    InitializeConditionVariable(&_cond);
    InitializeCriticalSection(&_mutex);

    _bQuit = true;

    _bProfilerEnabled = drwnCodeProfiler::enabled;
#endif
}

int YabThreadStart(unsigned int id, void (*func)(void *), void *arg) 
{ 
   if (!hnd_key_once)
   {
      hnd_key=TlsAlloc();
      hnd_key_once = 1;
   }

   if (thread_handle[id].running)
   {
      fprintf(stderr, "YabThreadStart: thread %u is already started!\n", id);
      return -1;
   }
   
   // Create CS and condition variable for thread
   InitializeCriticalSection(&thread_handle[id].mutex);
   InitializeConditionVariable(&thread_handle[id].cond);

   thread_handle[id].func = func;
   thread_handle[id].arg = arg;

   if ((thread_handle[id].thd = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)wrapper, &thread_handle[id], 0, NULL)) == NULL)
   {
      perror("CreateThread");
      return -1;
   }
   
   thread_handle[id].running = 1;

   return 0; 
}

/* session creation */
static int session_alloc(
    IN nfs41_client *client,
    OUT nfs41_session **session_out)
{
    nfs41_session *session;
    int status = NO_ERROR;

    session = calloc(1, sizeof(nfs41_session));
    if (session == NULL) {
        status = GetLastError();
        goto out;
    }
    session->client = client;
    session->renew_thread = INVALID_HANDLE_VALUE;
    session->isValidState = FALSE;

    InitializeCriticalSection(&session->table.lock);
    InitializeConditionVariable(&session->table.cond);

    init_slot_table(&session->table);

    //initialize session lock
    InitializeSRWLock(&client->session_lock);

    /* initialize the back channel */
    nfs41_callback_session_init(session);

    *session_out = session;
out:
    return status;
}

/**
@Status Caveat
@Notes Ignores Error codes, ignores error cases
*/
extern "C" int pthread_cond_init(pthread_cond_t* condvar, const pthread_condattr_t* attr) {
    CONDITION_VARIABLE* cond = new CONDITION_VARIABLE();
    memset(cond, 0, sizeof(CONDITION_VARIABLE));
    InitializeConditionVariable(cond);
    *condvar = (pthread_cond*)cond;
    return 0;
}

void barrier_init(barrier_t *barrier, int value)
{
    InitializeConditionVariable(&barrier->cond);
    InitializeCriticalSection(&barrier->mutex);
    barrier->value = value;
    barrier->counter = 0;
}

int tMPI_Thread_barrier_init(tMPI_Thread_barrier_t *barrier, int n)
{
    if(barrier==NULL)
    {
        return EINVAL;
    }

    barrier->barrierp=(struct tMPI_Thread_barrier*)
              tMPI_Malloc(sizeof(struct tMPI_Thread_barrier)*1);

#if 0
 /* use this once Vista is the oldest supported windows version: */
    InitializeCriticalSection(&(barrier->barrierp->cs));
    InitializeConditionVariable(&(barrier->barrierp->cv));
#else
    tMPI_Thread_mutex_init(&(barrier->barrierp->cs));
    tMPI_Thread_cond_init(&(barrier->barrierp->cv));
#endif

    barrier->threshold = n;
    barrier->count     = n;
    barrier->cycle     = 0;

    return 0;
}

inline WinThreadCVImpl::WinThreadCVImpl ()
    : ThreadCVImpl()
    , m_mutex()
    , m_waiters(0)
    , m_wakeups(0)
{
    InitializeConditionVariable(& m_cond);
}

C_CondVar::C_CondVar()
{
#ifdef _WIN32
    InitializeConditionVariable(&m_Cond);
#else
    pthread_cond_init(&m_Cond,NULL);
#endif
}

static void oskar_condition_init(oskar_ConditionVar* var)
{
    oskar_mutex_init(&var->lock);
#if defined(OSKAR_OS_WIN)
    InitializeConditionVariable(&var->var);
#else
    pthread_cond_init(&var->var, NULL);
#endif
}

inline Condition*
ConditionCreate()
{
    Condition* condition = new Condition;

    InitializeConditionVariable(condition);

    return condition;
}

int __bctbx_WIN_cond_init(bctbx_cond_t *cond, void *attr)
{
#ifdef BCTBX_WINDOWS_DESKTOP
	*cond=CreateEvent(NULL, FALSE, FALSE, NULL);
#else
	InitializeConditionVariable(cond);
#endif
	return 0;
}