Index: chrome/common/worker_thread_ticker.h |
diff --git a/chrome/common/worker_thread_ticker.h b/chrome/common/worker_thread_ticker.h |
deleted file mode 100644 |
index 696e6e93724727439ee842e59b22284bd0895794..0000000000000000000000000000000000000000 |
--- a/chrome/common/worker_thread_ticker.h |
+++ /dev/null |
@@ -1,87 +0,0 @@ |
-// Copyright (c) 2012 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. |
- |
-#ifndef CHROME_COMMON_WORKER_THREAD_TICKER_H_ |
-#define CHROME_COMMON_WORKER_THREAD_TICKER_H_ |
- |
-#include <vector> |
- |
-#include "base/macros.h" |
-#include "base/synchronization/lock.h" |
-#include "base/threading/thread.h" |
- |
-// This class provides the following functionality: |
-// It invokes a set of registered handlers at periodic intervals in |
-// the context of an arbitrary worker thread. |
-// The timer runs on a separate thread, so it will run even if the current |
-// thread is hung. Similarly, the callbacks will be called on a separate |
-// thread so they won't block the main thread. |
-class WorkerThreadTicker { |
- public: |
- // This callback interface to be implemented by clients of this |
- // class |
- class Callback { |
- public: |
- // Gets invoked when the timer period is up |
- virtual void OnTick() = 0; |
- |
- protected: |
- virtual ~Callback() {} |
- }; |
- |
- // tick_interval is the periodic interval in which to invoke the |
- // registered handlers (in milliseconds) |
- explicit WorkerThreadTicker(int tick_interval); |
- |
- ~WorkerThreadTicker(); |
- |
- // Registers a callback handler interface |
- // tick_handler is the handler interface to register. The ownership of this |
- // object is not transferred to this class. |
- bool RegisterTickHandler(Callback *tick_handler); |
- |
- // Unregisters a callback handler interface |
- // tick_handler is the handler interface to unregister |
- bool UnregisterTickHandler(Callback *tick_handler); |
- |
- // Starts the ticker. Returns false if the ticker is already running |
- // or if the Start fails. |
- bool Start(); |
- // Stops the ticker and waits for all callbacks. to be done. This method |
- // does not provide a way to stop without waiting for the callbacks to be |
- // done because this is inherently risky. |
- // Returns false is the ticker is not running |
- bool Stop(); |
- bool IsRunning() const { |
- return is_running_; |
- } |
- |
- void set_tick_interval(int tick_interval) { |
- tick_interval_ = base::TimeDelta::FromMilliseconds(tick_interval); |
- } |
- |
- private: |
- void ScheduleTimerTask(); |
- |
- void TimerTask(); |
- |
- // A list type that holds all registered callback interfaces |
- typedef std::vector<Callback*> TickHandlerListType; |
- |
- // Lock to protect is_running_ and tick_handler_list_ |
- base::Lock lock_; |
- |
- base::Thread timer_thread_; |
- bool is_running_; |
- |
- // The interval at which the callbacks are to be invoked |
- base::TimeDelta tick_interval_; |
- |
- // A list that holds all registered callback interfaces |
- TickHandlerListType tick_handler_list_; |
- |
- DISALLOW_COPY_AND_ASSIGN(WorkerThreadTicker); |
-}; |
- |
-#endif // CHROME_COMMON_WORKER_THREAD_TICKER_H_ |