49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/synchronization/waitable_event_watcher.h"
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#include "base/compiler_specific.h"
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#include "base/synchronization/waitable_event.h"
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#include "base/win/object_watcher.h"
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namespace base {
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WaitableEventWatcher::WaitableEventWatcher()
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: event_(NULL) {
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}
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WaitableEventWatcher::~WaitableEventWatcher() {
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}
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bool WaitableEventWatcher::StartWatching(
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WaitableEvent* event,
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const EventCallback& callback) {
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callback_ = callback;
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event_ = event;
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return watcher_.StartWatching(event->handle(), this);
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}
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void WaitableEventWatcher::StopWatching() {
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callback_.Reset();
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event_ = NULL;
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watcher_.StopWatching();
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}
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WaitableEvent* WaitableEventWatcher::GetWatchedEvent() {
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return event_;
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}
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void WaitableEventWatcher::OnObjectSignaled(HANDLE h) {
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WaitableEvent* event = event_;
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EventCallback callback = callback_;
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event_ = NULL;
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callback_.Reset();
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DCHECK(event);
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callback.Run(event);
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}
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} // namespace base
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