79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
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/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/system_wrappers/source/event_timer_win.h"
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#include "Mmsystem.h"
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namespace webrtc {
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// static
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EventTimerWrapper* EventTimerWrapper::Create() {
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return new EventTimerWin();
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}
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EventTimerWin::EventTimerWin()
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: event_(::CreateEvent(NULL, // security attributes
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FALSE, // manual reset
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FALSE, // initial state
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NULL)), // name of event
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timerID_(NULL) {
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}
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EventTimerWin::~EventTimerWin() {
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StopTimer();
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CloseHandle(event_);
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}
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bool EventTimerWin::Set() {
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// Note: setting an event that is already set has no effect.
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return SetEvent(event_) == 1;
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}
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EventTypeWrapper EventTimerWin::Wait(unsigned long max_time) {
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unsigned long res = WaitForSingleObject(event_, max_time);
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switch (res) {
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case WAIT_OBJECT_0:
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return kEventSignaled;
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case WAIT_TIMEOUT:
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return kEventTimeout;
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default:
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return kEventError;
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}
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}
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bool EventTimerWin::StartTimer(bool periodic, unsigned long time) {
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if (timerID_ != NULL) {
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timeKillEvent(timerID_);
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timerID_ = NULL;
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}
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if (periodic) {
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timerID_ = timeSetEvent(time, 0, (LPTIMECALLBACK)HANDLE(event_), 0,
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TIME_PERIODIC | TIME_CALLBACK_EVENT_PULSE);
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} else {
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timerID_ = timeSetEvent(time, 0, (LPTIMECALLBACK)HANDLE(event_), 0,
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TIME_ONESHOT | TIME_CALLBACK_EVENT_SET);
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}
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return timerID_ != NULL;
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}
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bool EventTimerWin::StopTimer() {
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if (timerID_ != NULL) {
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timeKillEvent(timerID_);
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timerID_ = NULL;
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}
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return true;
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}
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} // namespace webrtc
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