C++ CreateEventW函数代码示例

/**************************************************************************
 * 				TIME_MMTimeStart
 */
void	TIME_MMTimeStart(void)
{
    if (!TIME_hMMTimer) {
	TIME_TimersList = NULL;
        TIME_hWakeEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
        TIME_TimeToDie = FALSE;
	TIME_hMMTimer = CreateThread(NULL, 0, TIME_MMSysTimeThread, NULL, 0, NULL);
        SetThreadPriority(TIME_hMMTimer, THREAD_PRIORITY_TIME_CRITICAL);
    }
}

BLResult blThreadEventCreate(BLThreadEvent* self, bool manualReset, bool signaled) noexcept {
  HANDLE h = CreateEventW(nullptr, manualReset, signaled, nullptr);
  if (BL_UNLIKELY(!h)) {
    self->handle = -1;
    return blTraceError(blResultFromWinError(GetLastError()));
  }

  self->handle = (intptr_t)h;
  return BL_SUCCESS;
}

Timer::Timer(TelldusCore::EventRef event)
	:TelldusCore::Thread(), d(new PrivateData) {
	d->event = event;
#ifdef _WINDOWS
	d->cond = CreateEventW(NULL, false, false, NULL);
#else
	pthread_cond_init(&d->cond, NULL);
	pthread_mutex_init(&d->waitMutex, NULL);
#endif
}

QEventDispatcherWin32Private::QEventDispatcherWin32Private()
    : threadId(GetCurrentThreadId()), interrupt(false), internalHwnd(0)
{
    resolveTimerAPI();

    wakeUpNotifier.setHandle(QT_WA_INLINE(CreateEventW(0, FALSE, FALSE, 0),
                                          CreateEventA(0, FALSE, FALSE, 0)));
    if (!wakeUpNotifier.handle())
        qWarning("QEventDispatcher: Creating QEventDispatcherWin32Private wakeup event failed");
}

QWindowsFileSystemWatcherEngine::QWindowsFileSystemWatcherEngine()
    : msg(0)
{
    HANDLE h = QT_WA_INLINE(CreateEventW(0, false, false, 0),
                                CreateEventA(0, false, false, 0));
    if (h != INVALID_HANDLE_VALUE) {
        handles.reserve(MAXIMUM_WAIT_OBJECTS);
        handles.append(h);
    }
}

/// <summary>
/// Create the first connected Kinect found 
/// </summary>
/// <returns>indicates success or failure</returns>
HRESULT CSkeletonBasics::CreateFirstConnected()
{
    INuiSensor * pNuiSensor;

    int iSensorCount = 0;
    HRESULT hr = NuiGetSensorCount(&iSensorCount);
    if (FAILED(hr))
    {
        return hr;
    }

    // Look at each Kinect sensor
    for (int i = 0; i < iSensorCount; ++i)
    {
        // Create the sensor so we can check status, if we can't create it, move on to the next
        hr = NuiCreateSensorByIndex(i, &pNuiSensor);
        if (FAILED(hr))
        {
            continue;
        }

        // Get the status of the sensor, and if connected, then we can initialize it
        hr = pNuiSensor->NuiStatus();
        if (S_OK == hr)
        {
            m_pNuiSensor = pNuiSensor;
            break;
        }

        // This sensor wasn't OK, so release it since we're not using it
        pNuiSensor->Release();
    }

    if (NULL != m_pNuiSensor)
    {
        // Initialize the Kinect and specify that we'll be using skeleton
        hr = m_pNuiSensor->NuiInitialize(NUI_INITIALIZE_FLAG_USES_SKELETON); 
        if (SUCCEEDED(hr))
        {
            // Create an event that will be signaled when skeleton data is available
            m_hNextSkeletonEvent = CreateEventW(NULL, TRUE, FALSE, NULL);

            // Open a skeleton stream to receive skeleton data
            hr = m_pNuiSensor->NuiSkeletonTrackingEnable(m_hNextSkeletonEvent, 0); 
        }
    }

    if (NULL == m_pNuiSensor || FAILED(hr))
    {
        SetStatusMessage(L"No ready Kinect found!");
        return E_FAIL;
    }

    return hr;
}

KSDDKAPI
HRESULT
WINAPI
KsSynchronousDeviceControl(
    HANDLE     Handle,
    ULONG      IoControl,
    PVOID      InBuffer,
    ULONG      InLength,
    PVOID      OutBuffer,
    ULONG      OutLength,
    PULONG     BytesReturned)
{
    OVERLAPPED Overlapped;
    DWORD Transferred;

    /* zero overlapped */
    RtlZeroMemory(&Overlapped, sizeof(OVERLAPPED));

    /* create notification event */
    Overlapped.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);

    if (!Overlapped.hEvent)
    {
        /* failed */
        return MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, GetLastError());
    }

    if (!DeviceIoControl(Handle, IoControl, InBuffer, InLength, OutBuffer, OutLength, BytesReturned, &Overlapped))
    {
        /* operation failed */
        if (GetLastError() != ERROR_IO_PENDING)
        {
            /* failed */
            CloseHandle(Overlapped.hEvent);
            return MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, GetLastError());
        }
    }

    /* get result of pending operation */
    if (!GetOverlappedResult(Handle, &Overlapped, &Transferred, TRUE))
    {
        /* failed */
        CloseHandle(Overlapped.hEvent);
        return MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, GetLastError());
    }

    /* store number of bytes transferred */
    *BytesReturned = Transferred;

    /* close event object */
    CloseHandle(Overlapped.hEvent);

    /* done */
    return NOERROR;
}

static DWORD WINAPI ProcessPageRefreshThread(void *lpParameter)
{
    ULONG    OldProcessorUsage = 0;
    ULONG    OldProcessCount = 0;

    WCHAR    wszCPU_Usage[255];
    WCHAR    wszProcesses[255];

    LoadStringW(hInst, IDS_STATUS_BAR_CPU_USAGE, wszCPU_Usage, sizeof(wszCPU_Usage)/sizeof(WCHAR));
    LoadStringW(hInst, IDS_STATUS_BAR_PROCESSES, wszProcesses, sizeof(wszProcesses)/sizeof(WCHAR));

    /* Create the event */
    hProcessPageEvent = CreateEventW(NULL, TRUE, TRUE, NULL);

    /* If we couldn't create the event then exit the thread */
    if (!hProcessPageEvent)
        return 0;

    while (1) {
        DWORD    dwWaitVal;

        /* Wait on the event */
        dwWaitVal = WaitForSingleObject(hProcessPageEvent, INFINITE);

        /* If the wait failed then the event object must have been */
        /* closed and the task manager is exiting so exit this thread */
        if (dwWaitVal == WAIT_FAILED)
            return 0;

        if (dwWaitVal == WAIT_OBJECT_0) {
            WCHAR    text[256];

            /* Reset our event */
            ResetEvent(hProcessPageEvent);

            if (SendMessageW(hProcessPageListCtrl, LVM_GETITEMCOUNT, 0, 0) != PerfDataGetProcessCount())
                SendMessageW(hProcessPageListCtrl, LVM_SETITEMCOUNT, PerfDataGetProcessCount(), /*LVSICF_NOINVALIDATEALL|*/LVSICF_NOSCROLL);

            if (IsWindowVisible(hProcessPage))
                InvalidateRect(hProcessPageListCtrl, NULL, FALSE);

            if (OldProcessorUsage != PerfDataGetProcessorUsage()) {
                OldProcessorUsage = PerfDataGetProcessorUsage();
                wsprintfW(text, wszCPU_Usage, OldProcessorUsage);
                SendMessageW(hStatusWnd, SB_SETTEXTW, 1, (LPARAM)text);
            }
            if (OldProcessCount != PerfDataGetProcessCount()) {
                OldProcessCount = PerfDataGetProcessCount();
                wsprintfW(text, wszProcesses, OldProcessCount);
                SendMessageW(hStatusWnd, SB_SETTEXTW, 0, (LPARAM)text);
            }
        }
    }
        return 0;
}

	bool TaskSchedulerImpl::Initialize(std::size_t workerCount)
	{
		if (IsInitialized())
			return true; // Déjà initialisé

		#if NAZARA_CORE_SAFE
		if (workerCount == 0)
		{
			NazaraError("Invalid worker count ! (0)");
			return false;
		}
		#endif

		s_workerCount = workerCount;
		s_doneEvents.reset(new HANDLE[workerCount]);
		s_workers.reset(new Worker[workerCount]);
		s_workerThreads.reset(new HANDLE[workerCount]);

		// L'identifiant de chaque worker doit rester en vie jusqu'à ce que chaque thread soit correctement lancé
		std::unique_ptr<std::size_t[]> workerIDs(new std::size_t[workerCount]);

		for (std::size_t i = 0; i < workerCount; ++i)
		{
			// On initialise les évènements, mutex et threads de chaque worker
			Worker& worker = s_workers[i];
			InitializeCriticalSection(&worker.queueMutex);
			worker.wakeEvent = CreateEventW(nullptr, false, false, nullptr);
			worker.running = true;
			worker.workCount = 0;

			s_doneEvents[i] = CreateEventW(nullptr, true, false, nullptr);

			// Le thread va se lancer, signaler qu'il est prêt à travailler (s_doneEvents) et attendre d'être réveillé
			workerIDs[i] = i;
			s_workerThreads[i] = reinterpret_cast<HANDLE>(_beginthreadex(nullptr, 0, &WorkerProc, &workerIDs[i], 0, nullptr));
		}

		// On attend que les workers se mettent en attente
		WaitForMultipleObjects(s_workerCount, &s_doneEvents[0], true, INFINITE);

		return true;
	}

Kinect::Kinect(void)
{
	HRESULT hr = NuiCreateSensorByIndex(0,  &m_kinect_handle);
    if (SUCCEEDED(hr))
    {
		
		m_kinect_handle->NuiInitialize( NUI_INITIALIZE_FLAG_USES_SKELETON);
		m_hNextSkeletonEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
		hr = m_kinect_handle->NuiSkeletonTrackingEnable(m_hNextSkeletonEvent, NUI_SKELETON_TRACKING_FLAG_ENABLE_IN_NEAR_RANGE | NUI_SKELETON_TRACKING_FLAG_ENABLE_SEATED_SUPPORT);
	}
}

DWORD service_start(struct service_entry *service, DWORD service_argc, LPCWSTR *service_argv)
{
    DWORD err;
    LPWSTR name;
    HANDLE process_handle = NULL;

    err = scmdatabase_lock_startup(service->db);
    if (err != ERROR_SUCCESS)
        return err;

    if (service->control_pipe != INVALID_HANDLE_VALUE)
    {
        scmdatabase_unlock_startup(service->db);
        return ERROR_SERVICE_ALREADY_RUNNING;
    }

    service->control_mutex = CreateMutexW(NULL, TRUE, NULL);

    if (!service->status_changed_event)
        service->status_changed_event = CreateEventW(NULL, FALSE, FALSE, NULL);

    name = service_get_pipe_name();
    service->control_pipe = CreateNamedPipeW(name, PIPE_ACCESS_DUPLEX,
                  PIPE_TYPE_BYTE|PIPE_WAIT, 1, 256, 256, 10000, NULL );
    HeapFree(GetProcessHeap(), 0, name);
    if (service->control_pipe==INVALID_HANDLE_VALUE)
    {
        WINE_ERR("failed to create pipe for %s, error = %d\n",
            wine_dbgstr_w(service->name), GetLastError());
        scmdatabase_unlock_startup(service->db);
        return GetLastError();
    }

    err = service_start_process(service, &process_handle);

    if (err == ERROR_SUCCESS)
    {
        if (!service_send_start_message(service, service_argv, service_argc))
            err = ERROR_SERVICE_REQUEST_TIMEOUT;
    }

    if (err == ERROR_SUCCESS)
        err = service_wait_for_startup(service, process_handle);

    if (process_handle)
        CloseHandle(process_handle);

    ReleaseMutex(service->control_mutex);
    scmdatabase_unlock_startup(service->db);

    WINE_TRACE("returning %d\n", err);

    return err;
}

BOOL RPCSS_Initialize(void)
{
  static unsigned short irot_protseq[] = IROT_PROTSEQ;
  static unsigned short irot_endpoint[] = IROT_ENDPOINT;
  static unsigned short epm_protseq[] = {'n','c','a','c','n','_','n','p',0};
  static unsigned short epm_endpoint[] = {'\\','p','i','p','e','\\','e','p','m','a','p','p','e','r',0};
  static unsigned short epm_protseq_lrpc[] = {'n','c','a','l','r','p','c',0};
  static unsigned short epm_endpoint_lrpc[] = {'e','p','m','a','p','p','e','r',0};
  RPC_STATUS status;

  WINE_TRACE("\n");

  status = RpcServerRegisterIf(epm_v3_0_s_ifspec, NULL, NULL);
  if (status != RPC_S_OK)
    return status;
  status = RpcServerRegisterIf(Irot_v0_2_s_ifspec, NULL, NULL);
  if (status != RPC_S_OK)
  {
    RpcServerUnregisterIf(epm_v3_0_s_ifspec, NULL, FALSE);
    return FALSE;
  }

  status = RpcServerUseProtseqEpW(epm_protseq, RPC_C_PROTSEQ_MAX_REQS_DEFAULT,
                                  epm_endpoint, NULL);
  if (status != RPC_S_OK)
    goto fail;

  status = RpcServerUseProtseqEpW(epm_protseq_lrpc, RPC_C_PROTSEQ_MAX_REQS_DEFAULT,
                                  epm_endpoint_lrpc, NULL);
  if (status != RPC_S_OK)
      goto fail;

  status = RpcServerUseProtseqEpW(irot_protseq, RPC_C_PROTSEQ_MAX_REQS_DEFAULT,
                                  irot_endpoint, NULL);
  if (status != RPC_S_OK)
    goto fail;

  status = RpcServerListen(1, RPC_C_LISTEN_MAX_CALLS_DEFAULT, TRUE);
  if (status != RPC_S_OK)
    goto fail;

#ifndef __REACTOS__
  exit_event = __wine_make_process_system();
#else
  exit_event = CreateEventW(NULL, FALSE, FALSE, NULL); // never fires
#endif

  return TRUE;

fail:
  RpcServerUnregisterIf(epm_v3_0_s_ifspec, NULL, FALSE);
  RpcServerUnregisterIf(Irot_v0_2_s_ifspec, NULL, FALSE);
  return FALSE;
}

 HOOKFUNC HANDLE WINAPI MyCreateEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState, LPCWSTR lpName)
 {
     HANDLE rv = CreateEventW(lpEventAttributes, bManualReset, bInitialState, lpName);
     debuglog(LCF_SYNCOBJ | LCF_TODO, __FUNCTION__ " returned 0x%X.\n", rv);
     EnterCriticalSection(&s_handleCS);
     std::set<HANDLE>& handles = s_threadIdHandles[GetCurrentThreadId()];
     handles.insert(rv);
     //for(unsigned int i = 0; i < handles.size(); i++)
     //	debugprintf(" . 0x%X . ", handles[i]);
     LeaveCriticalSection(&s_handleCS);
     return rv;
 }

/****************************************************************************
 *		ReadDirectoryChangesW ([email protected])
 *
 * NOTES
 *
 *  The filter is remember from the first run and ignored on successive runs.
 *
 *  If there's no output buffer on the first run, it's ignored successive runs
 *   and STATUS_NOTIFY_ENUM_DIRECTORY is returned with an empty buffer.
 *
 *  If a NULL overlapped->hEvent is passed, the directory handle is used
 *   for signalling.
 */
BOOL WINAPI ReadDirectoryChangesW( HANDLE handle, LPVOID buffer, DWORD len, BOOL subtree,
                                   DWORD filter, LPDWORD returned, LPOVERLAPPED overlapped,
                                   LPOVERLAPPED_COMPLETION_ROUTINE completion )
{
    OVERLAPPED ov, *pov;
    IO_STATUS_BLOCK *ios;
    NTSTATUS status;
    BOOL ret = TRUE;
    LPVOID cvalue = NULL;

    TRACE("%p %p %08x %d %08x %p %p %p\n", handle, buffer, len, subtree, filter,
           returned, overlapped, completion );

    if (!overlapped)
    {
        memset( &ov, 0, sizeof ov );
        ov.hEvent = CreateEventW( NULL, 0, 0, NULL );
        pov = &ov;
    }
    else
    {
        pov = overlapped;
        if(completion) cvalue = completion;
        else if (((ULONG_PTR)overlapped->hEvent & 1) == 0) cvalue = overlapped;
    }

    ios = (PIO_STATUS_BLOCK) pov;
    ios->u.Status = STATUS_PENDING;

    status = NtNotifyChangeDirectoryFile( handle, completion && overlapped ? NULL : pov->hEvent,
            completion && overlapped ? invoke_completion : NULL,
            cvalue, ios, buffer, len, filter, subtree );
    if (status == STATUS_PENDING)
    {
        if (overlapped)
            return TRUE;

        WaitForSingleObjectEx( ov.hEvent, INFINITE, TRUE );
        CloseHandle( ov.hEvent );
        if (returned)
            *returned = ios->Information;
        status = ios->u.Status;
    }

    if (status != STATUS_SUCCESS)
    {
        SetLastError( RtlNtStatusToDosError(status) );
        ret = FALSE;
    }

    return ret;
}

static int init(struct ao *ao)
{
    MP_DBG(ao, "Init wasapi\n");
    CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

    struct wasapi_state *state = ao->priv;
    state->log = ao->log;
    if(!wasapi_fill_VistaBlob(state))
        MP_WARN(ao, "Error loading thread priority functions\n");

    state->hInitDone = CreateEventW(NULL, FALSE, FALSE, NULL);
    state->hWake     = CreateEventW(NULL, FALSE, FALSE, NULL);
    if (!state->hInitDone || !state->hWake) {
        MP_ERR(ao, "Error creating events\n");
        uninit(ao);
        return -1;
    }

    state->init_ret = E_FAIL;
    state->hAudioThread = CreateThread(NULL, 0, &AudioThread, ao, 0, NULL);
    if (!state->hAudioThread) {
        MP_ERR(ao, "Failed to create audio thread\n");
        uninit(ao);
        return -1;
    }

    WaitForSingleObject(state->hInitDone, INFINITE); /* wait on init complete */
    SAFE_RELEASE(state->hInitDone,CloseHandle(state->hInitDone));
    if (state->init_ret != S_OK) {
        if (!ao->probing)
            MP_ERR(ao, "Received failure from audio thread\n");
        uninit(ao);
        return -1;
    }

    wasapi_setup_proxies(state);
    MP_DBG(ao, "Init wasapi done\n");
    return 0;
}