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#JIRA UE-153246 #rb Luke.Berminham, Ivan.Sidarau #fyi Mattias.Jansson, Pavel.Punsky #preflight 6286e0dc9016c6dd89a5dda5 [CL 20315916 by Aidan Possemiers in ue5-main branch]
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (c) 2012 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 MODULES_INCLUDE_MODULE_H_
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#define MODULES_INCLUDE_MODULE_H_
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#include <stdint.h>
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namespace webrtc {
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class ProcessThread;
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class Module {
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public:
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// Returns the number of milliseconds until the module wants a worker
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// thread to call Process.
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// This method is called on the same worker thread as Process will
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// be called on.
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// TODO(tommi): Almost all implementations of this function, need to know
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// the current tick count. Consider passing it as an argument. It could
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// also improve the accuracy of when the next callback occurs since the
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// thread that calls Process() will also have it's tick count reference
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// which might not match with what the implementations use.
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virtual int64_t TimeUntilNextProcess() = 0;
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// Process any pending tasks such as timeouts.
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// Called on a worker thread.
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virtual void Process() = 0;
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// This method is called when the module is attached to a *running* process
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// thread or detached from one. In the case of detaching, `process_thread`
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// will be nullptr.
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//
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// This method will be called in the following cases:
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//
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// * Non-null process_thread:
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// * ProcessThread::RegisterModule() is called while the thread is running.
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// * ProcessThread::Start() is called and RegisterModule has previously
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// been called. The thread will be started immediately after notifying
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// all modules.
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//
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// * Null process_thread:
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// * ProcessThread::DeRegisterModule() is called while the thread is
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// running.
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// * ProcessThread::Stop() was called and the thread has been stopped.
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//
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// NOTE: This method is not called from the worker thread itself, but from
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// the thread that registers/deregisters the module or calls Start/Stop.
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virtual void ProcessThreadAttached(ProcessThread* process_thread) {}
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protected:
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virtual ~Module() {}
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};
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} // namespace webrtc
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#endif // MODULES_INCLUDE_MODULE_H_
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