/*
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* Copyright 2015 Rockchip Electronics Co. LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* File : mpp_thread.h
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* Description : thread library for different OS
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* Author : herman.chen@rock-chips.com
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* Date : 9:47 2015/7/27
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*/
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#ifndef __MPP_THREAD_H__
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#define __MPP_THREAD_H__
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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/*
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* NOTE: POSIX Threads for Win32
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* Downloaded from http://www.sourceware.org/pthreads-win32/
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*/
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#include "semaphore.h"
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#include "pthread.h"
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#pragma comment(lib, "pthreadVC2.lib")
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/*
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* add pthread_setname_np for windows
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*/
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int pthread_setname_np(pthread_t thread, const char *name);
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#else
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#include <unistd.h>
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#include <semaphore.h>
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#include <pthread.h>
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#include <sys/time.h>
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#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP PTHREAD_RECURSIVE_MUTEX_INITIALIZER
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#endif
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#endif
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#define THREAD_NAME_LEN 16
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typedef void *(*MppThreadFunc)(void *);
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typedef enum {
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MPP_THREAD_UNINITED,
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MPP_THREAD_RUNNING,
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MPP_THREAD_WAITING,
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MPP_THREAD_STOPPING,
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} MppThreadStatus;
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#ifdef __cplusplus
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#include "mpp_debug.h"
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class Mutex;
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class Condition;
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/*
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* for shorter type name and function name
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*/
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class Mutex
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{
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public:
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Mutex();
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~Mutex();
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void lock();
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void unlock();
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int trylock();
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class Autolock
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{
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public:
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inline Autolock(Mutex* mutex, RK_U32 enable = 1) :
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mEnabled(enable),
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mLock(*mutex) {
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if (mEnabled)
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mLock.lock();
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}
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inline ~Autolock() {
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if (mEnabled)
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mLock.unlock();
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}
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private:
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RK_S32 mEnabled;
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Mutex& mLock;
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};
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private:
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friend class Condition;
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pthread_mutex_t mMutex;
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Mutex(const Mutex &);
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Mutex &operator = (const Mutex&);
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};
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inline Mutex::Mutex()
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{
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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pthread_mutex_init(&mMutex, &attr);
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pthread_mutexattr_destroy(&attr);
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}
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inline Mutex::~Mutex()
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{
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pthread_mutex_destroy(&mMutex);
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}
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inline void Mutex::lock()
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{
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pthread_mutex_lock(&mMutex);
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}
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inline void Mutex::unlock()
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{
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pthread_mutex_unlock(&mMutex);
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}
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inline int Mutex::trylock()
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{
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return pthread_mutex_trylock(&mMutex);
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}
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typedef Mutex::Autolock AutoMutex;
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/*
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* for shorter type name and function name
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*/
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class Condition
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{
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public:
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Condition();
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Condition(int type);
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~Condition();
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RK_S32 wait(Mutex& mutex);
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RK_S32 wait(Mutex* mutex);
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RK_S32 timedwait(Mutex& mutex, RK_S64 timeout);
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RK_S32 timedwait(Mutex* mutex, RK_S64 timeout);
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RK_S32 signal();
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RK_S32 broadcast();
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private:
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pthread_cond_t mCond;
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};
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inline Condition::Condition()
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{
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pthread_cond_init(&mCond, NULL);
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}
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inline Condition::~Condition()
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{
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pthread_cond_destroy(&mCond);
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}
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inline RK_S32 Condition::wait(Mutex& mutex)
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{
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return pthread_cond_wait(&mCond, &mutex.mMutex);
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}
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inline RK_S32 Condition::wait(Mutex* mutex)
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{
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return pthread_cond_wait(&mCond, &mutex->mMutex);
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}
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inline RK_S32 Condition::timedwait(Mutex& mutex, RK_S64 timeout)
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{
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return timedwait(&mutex, timeout);
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}
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inline RK_S32 Condition::timedwait(Mutex* mutex, RK_S64 timeout)
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{
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struct timespec ts;
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clock_gettime(CLOCK_REALTIME_COARSE, &ts);
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ts.tv_sec += timeout / 1000;
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ts.tv_nsec += (timeout % 1000) * 1000000;
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/* Prevent the out of range at nanoseconds field */
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ts.tv_sec += ts.tv_nsec / 1000000000;
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ts.tv_nsec %= 1000000000;
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return pthread_cond_timedwait(&mCond, &mutex->mMutex, &ts);
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}
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inline RK_S32 Condition::signal()
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{
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return pthread_cond_signal(&mCond);
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}
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inline RK_S32 Condition::broadcast()
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{
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return pthread_cond_broadcast(&mCond);
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}
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class MppMutexCond
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{
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public:
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MppMutexCond() {};
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~MppMutexCond() {};
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void lock() { mLock.lock(); }
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void unlock() { mLock.unlock(); }
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int trylock() { return mLock.trylock(); }
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void wait() { mCondition.wait(mLock); }
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RK_S32 wait(RK_S64 timeout) { return mCondition.timedwait(mLock, timeout); }
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void signal() { mCondition.signal(); }
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void broadcast() { mCondition.broadcast(); }
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Mutex *mutex() { return &mLock; }
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private:
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Mutex mLock;
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Condition mCondition;
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};
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// Thread lock / signal is distinguished by its source
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typedef enum MppThreadSignal_e {
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THREAD_WORK, // for working loop
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THREAD_INPUT, // for thread input
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THREAD_OUTPUT, // for thread output
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THREAD_CONTROL, // for thread async control (reset)
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THREAD_SIGNAL_BUTT,
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} MppThreadSignal;
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#define THREAD_NORMAL 0
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#define THRE 0
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class MppThread
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{
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public:
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MppThread(MppThreadFunc func, void *ctx, const char *name = NULL);
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~MppThread() {};
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MppThreadStatus get_status(MppThreadSignal id = THREAD_WORK);
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void set_status(MppThreadStatus status, MppThreadSignal id = THREAD_WORK);
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void dump_status();
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void start();
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void stop();
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void lock(MppThreadSignal id = THREAD_WORK) {
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mpp_assert(id < THREAD_SIGNAL_BUTT);
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mMutexCond[id].lock();
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}
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void unlock(MppThreadSignal id = THREAD_WORK) {
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mpp_assert(id < THREAD_SIGNAL_BUTT);
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mMutexCond[id].unlock();
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}
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void wait(MppThreadSignal id = THREAD_WORK) {
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mpp_assert(id < THREAD_SIGNAL_BUTT);
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MppThreadStatus status = mStatus[id];
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mStatus[id] = MPP_THREAD_WAITING;
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mMutexCond[id].wait();
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// check the status is not changed then restore status
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if (mStatus[id] == MPP_THREAD_WAITING)
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mStatus[id] = status;
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}
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void signal(MppThreadSignal id = THREAD_WORK) {
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mpp_assert(id < THREAD_SIGNAL_BUTT);
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mMutexCond[id].signal();
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}
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Mutex *mutex(MppThreadSignal id = THREAD_WORK) {
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mpp_assert(id < THREAD_SIGNAL_BUTT);
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return mMutexCond[id].mutex();
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}
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private:
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pthread_t mThread;
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MppMutexCond mMutexCond[THREAD_SIGNAL_BUTT];
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MppThreadStatus mStatus[THREAD_SIGNAL_BUTT];
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MppThreadFunc mFunction;
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char mName[THREAD_NAME_LEN];
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void *mContext;
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MppThread();
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MppThread(const MppThread &);
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MppThread &operator=(const MppThread &);
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};
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#endif
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#endif /*__MPP_THREAD_H__*/
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