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/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
#define WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
#include "webrtc/typedefs.h"
#include "webrtc/base/scoped_ptr.h"
namespace webrtc {
class Module;
class ProcessTask {
public:
ProcessTask() {}
virtual ~ProcessTask() {}
virtual void Run() = 0;
};
class ProcessThread {
public:
virtual ~ProcessThread();
static rtc::scoped_ptr<ProcessThread> Create(const char* thread_name);
// Starts the worker thread. Must be called from the construction thread.
virtual void Start() = 0;
// Stops the worker thread. Must be called from the construction thread.
virtual void Stop() = 0;
// Wakes the thread up to give a module a chance to do processing right
// away. This causes the worker thread to wake up and requery the specified
// module for when it should be called back. (Typically the module should
// return 0 from TimeUntilNextProcess on the worker thread at that point).
// Can be called on any thread.
virtual void WakeUp(Module* module) = 0;
// Queues a task object to run on the worker thread. Ownership of the
// task object is transferred to the ProcessThread and the object will
// either be deleted after running on the worker thread, or on the
// construction thread of the ProcessThread instance, if the task did not
// get a chance to run (e.g. posting the task while shutting down or when
// the thread never runs).
virtual void PostTask(rtc::scoped_ptr<ProcessTask> task) = 0;
// Adds a module that will start to receive callbacks on the worker thread.
// Can be called from any thread.
virtual void RegisterModule(Module* module) = 0;
// Removes a previously registered module.
// Can be called from any thread.
virtual void DeRegisterModule(Module* module) = 0;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
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