1 files changed, 80 insertions, 0 deletions
diff --git a/cc/timer.cc b/cc/timer.cc
new file mode 100644
index 0000000..089c12b
--- /dev/null
+++ b/cc/timer.cc
@@ -0,0 +1,80 @@
+// Copyright 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+
+#include "CCTimer.h"
+
+#include "base/compiler_specific.h"
+#include "CCThread.h"
+
+namespace cc {
+
+class CCTimerTask : public CCThread::Task {
+public:
+    explicit CCTimerTask(CCTimer* timer)
+        : CCThread::Task(0)
+        , m_timer(timer)
+    {
+    }
+
+    virtual ~CCTimerTask()
+    {
+        if (!m_timer)
+            return;
+
+        ASSERT(m_timer->m_task == this);
+        m_timer->stop();
+    }
+
+    virtual void performTask() OVERRIDE
+    {
+        if (!m_timer)
+            return;
+
+        CCTimerClient* client = m_timer->m_client;
+
+        m_timer->stop();
+        if (client)
+            client->onTimerFired();
+    }
+
+private:
+    friend class CCTimer;
+
+    CCTimer* m_timer; // null if cancelled
+};
+
+CCTimer::CCTimer(CCThread* thread, CCTimerClient* client)
+    : m_client(client)
+    , m_thread(thread)
+    , m_task(0)
+{
+}
+
+CCTimer::~CCTimer()
+{
+    stop();
+}
+
+void CCTimer::startOneShot(double intervalSeconds)
+{
+    stop();
+
+    m_task = new CCTimerTask(this);
+
+    // The thread expects delays in milliseconds.
+    m_thread->postDelayedTask(adoptPtr(m_task), intervalSeconds * 1000.0);
+}
+
+void CCTimer::stop()
+{
+    if (!m_task)
+        return;
+
+    m_task->m_timer = 0;
+    m_task = 0;
+}
+
+} // namespace cc