0c3e12b7bf
* Add a new WakeUp method that gives a module a chance to be called back right away on the worker thread.
* Wrote unit tests for the class.
* Significantly reduce the amount of locking.
- ProcessThreadImpl itself does a lot less locking.
- Reimplemented the way we keep track of when to make calls to Process.
This reduces the amount of calls to TimeUntilNextProcess and since most implementations of that function grab a lock, this means less locking.
* Renamed ProcessThread::CreateProcessThread to ProcessThread::Create.
* Added thread checks for Start/Stop. Threading model of other functions is now documented.
* We now log an error if an implementation of TimeUntilNextProcess returns a negative value (some implementations do, but the method should only return a positive nr of ms).
* Removed the DestroyProcessThread method and instead force callers to use scoped_ptr<> to maintain object lifetime.
BUG=2822
R=henrika@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/35999004
Cr-Commit-Position: refs/heads/master@{#8261}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8261 4adac7df-926f-26a2-2b94-8c16560cd09d
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
/*
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* Copyright (c) 2011 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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#ifndef WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
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#define WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
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#include "webrtc/typedefs.h"
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#include "webrtc/base/scoped_ptr.h"
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namespace webrtc {
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class Module;
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class ProcessThread {
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public:
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virtual ~ProcessThread();
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static rtc::scoped_ptr<ProcessThread> Create();
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// Starts the worker thread. Must be called from the construction thread.
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virtual int32_t Start() = 0;
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// Stops the worker thread. Must be called from the construction thread.
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virtual int32_t Stop() = 0;
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// Wakes the thread up to give a module a chance to do processing right
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// away. This causes the worker thread to wake up and requery the specified
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// module for when it should be called back. (Typically the module should
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// return 0 from TimeUntilNextProcess on the worker thread at that point).
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// Can be called on any thread.
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virtual void WakeUp(Module* module) = 0;
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// Adds a module that will start to receive callbacks on the worker thread.
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// Can be called from any thread.
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virtual int32_t RegisterModule(Module* module) = 0;
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// Removes a previously registered module.
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// Can be called from any thread.
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virtual int32_t DeRegisterModule(const Module* module) = 0;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_UTILITY_INTERFACE_PROCESS_THREAD_H_
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