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92 lines
3.7 KiB
92 lines
3.7 KiB
/* Copyright (c) 2015, The Linux Foundation. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided |
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* with the distribution. |
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* * Neither the name of The Linux Foundation, nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef __LOC_THREAD__ |
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#define __LOC_THREAD__ |
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#include <stddef.h> |
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#include <pthread.h> |
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// abstract class to be implemented by client to provide a runnable class |
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// which gets scheduled by LocThread |
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class LocRunnable { |
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public: |
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inline LocRunnable() {} |
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inline virtual ~LocRunnable() {} |
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// The method to be implemented by thread clients |
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// and be scheduled by LocThread |
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// This method will be repeated called until it returns false; or |
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// until thread is stopped. |
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virtual bool run() = 0; |
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// The method to be run before thread loop (conditionally repeatedly) |
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// calls run() |
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inline virtual void prerun() {} |
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// The method to be run after thread loop (conditionally repeatedly) |
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// calls run() |
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inline virtual void postrun() {} |
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}; |
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// opaque class to provide service implementation. |
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class LocThreadDelegate; |
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// A utility class to create a thread and run LocRunnable |
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// caller passes in. |
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class LocThread { |
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LocThreadDelegate* mThread; |
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public: |
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inline LocThread() : mThread(NULL) {} |
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virtual ~LocThread(); |
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typedef pthread_t (*tCreate)(const char* name, void* (*start)(void*), void* arg); |
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// client starts thread with a runnable, which implements |
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// the logics to fun in the created thread context. |
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// The thread could be either joinable or detached. |
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// runnable is an obj managed by client. Client creates and |
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// frees it (but must be after stop() is called, or |
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// this LocThread obj is deleted). |
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// The obj will be deleted by LocThread if start() |
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// returns true. Else it is client's responsibility |
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// to delete the object |
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// Returns 0 if success; false if failure. |
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bool start(tCreate creator, const char* threadName, LocRunnable* runnable, bool joinable = true); |
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inline bool start(const char* threadName, LocRunnable* runnable, bool joinable = true) { |
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return start(NULL, threadName, runnable, joinable); |
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} |
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// NOTE: if this is a joinable thread, this stop may block |
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// for a while until the thread is joined. |
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void stop(); |
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// thread status check |
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inline bool isRunning() { return NULL != mThread; } |
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}; |
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#endif //__LOC_THREAD__
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