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