http://blog.csdn.net/zhoubl668/article/details/8927090?t=1473221020107
線程池的原理大家都知道,直接上代碼了^_^
Thread.h
[cpp]?view plaincopy
- #ifndef?__THREAD_H???
- #define?__THREAD_H???
- ??
- #include?<vector>???
- #include?<string>???
- #include?<pthread.h>???
- ??
- using?namespace?std;??
- ??
- /**?
- ?*?執行任務的類,設置任務數據并執行?
- ?*/??
- class?CTask??
- {??
- protected:??
- ????string?m_strTaskName;??/**?任務的名稱?*/??
- ????void*?m_ptrData;???????/**?要執行的任務的具體數據?*/??
- public:??
- ????CTask(){}??
- ????CTask(string?taskName)??
- ????{??
- ????????m_strTaskName?=?taskName;??
- ????????m_ptrData?=?NULL;??
- ????}??
- ????virtual?int?Run()=?0;??
- ????void?SetData(void*?data);????/**?設置任務數據?*/??
- ??
- public:??
- ????virtual?~CTask(){}??
- };??
- ??
- /**?
- ?*?線程池管理類的實現?
- ?*/??
- class?CThreadPool??
- {??
- private:??
- ????static??vector<CTask*>?m_vecTaskList;?????/**?任務列表?*/??
- ????static??bool?shutdown;????????????????????/**?線程退出標志?*/???????????
- ????int?????m_iThreadNum;?????????????????????/**?線程池中啟動的線程數?*/??
- ????pthread_t???*pthread_id;??
- ??????
- ????static?pthread_mutex_t?m_pthreadMutex;????/**?線程同步鎖?*/??
- ????static?pthread_cond_t?m_pthreadCond;??????/**?線程同步的條件變量?*/??
- ??
- protected:??
- ????static?void*?ThreadFunc(void?*?threadData);?/**?新線程的線程回調函數?*/??
- ????static?int?MoveToIdle(pthread_t?tid);???????/**?線程執行結束后,把自己放入到空閑線程中?*/??
- ????static?int?MoveToBusy(pthread_t?tid);???????/**?移入到忙碌線程中去?*/??
- ??????
- ????int?Create();??????????/**?創建線程池中的線程?*/??
- ??
- public:??
- ????CThreadPool(int?threadNum?=?10);??
- ????int?AddTask(CTask?*task);??????/**?把任務添加到任務隊列中?*/??
- ????int?StopAll();?????????????????/**?使線程池中的線程退出?*/??
- ????int?getTaskSize();?????????????/**?獲取當前任務隊列中的任務數?*/??
- };??
- ??
- #endif??
[cpp]?view plain?copy
- #ifndef?__THREAD_H??
- #define?__THREAD_H??
- ??
- #include?<vector>??
- #include?<string>??
- #include?<pthread.h>??
- ??
- using?namespace?std;??
- ??
- /**?
- ?*?執行任務的類,設置任務數據并執行?
- ?*/??
- class?CTask??
- {??
- protected:??
- ????string?m_strTaskName;??/**?任務的名稱?*/??
- ????void*?m_ptrData;???????/**?要執行的任務的具體數據?*/??
- public:??
- ????CTask(){}??
- ????CTask(string?taskName)??
- ????{??
- ????????m_strTaskName?=?taskName;??
- ????????m_ptrData?=?NULL;??
- ????}??
- ????virtual?int?Run()=?0;??
- ????void?SetData(void*?data);????/**?設置任務數據?*/??
- ??
- public:??
- ????virtual?~CTask(){}??
- };??
- ??
- /**?
- ?*?線程池管理類的實現?
- ?*/??
- class?CThreadPool??
- {??
- private:??
- ????static??vector<CTask*>?m_vecTaskList;?????/**?任務列表?*/??
- ????static??bool?shutdown;????????????????????/**?線程退出標志?*/???????????
- ????int?????m_iThreadNum;?????????????????????/**?線程池中啟動的線程數?*/??
- ????pthread_t???*pthread_id;??
- ??????
- ????static?pthread_mutex_t?m_pthreadMutex;????/**?線程同步鎖?*/??
- ????static?pthread_cond_t?m_pthreadCond;??????/**?線程同步的條件變量?*/??
- ??
- protected:??
- ????static?void*?ThreadFunc(void?*?threadData);?/**?新線程的線程回調函數?*/??
- ????static?int?MoveToIdle(pthread_t?tid);???????/**?線程執行結束后,把自己放入到空閑線程中?*/??
- ????static?int?MoveToBusy(pthread_t?tid);???????/**?移入到忙碌線程中去?*/??
- ??????
- ????int?Create();??????????/**?創建線程池中的線程?*/??
- ??
- public:??
- ????CThreadPool(int?threadNum?=?10);??
- ????int?AddTask(CTask?*task);??????/**?把任務添加到任務隊列中?*/??
- ????int?StopAll();?????????????????/**?使線程池中的線程退出?*/??
- ????int?getTaskSize();?????????????/**?獲取當前任務隊列中的任務數?*/??
- };??
- ??
- #endif??
?
實現文件
Thread.cpp
[cpp]?view plaincopy
- #include?"Thread.h"???
- #include?<iostream>???
- ??
- void?CTask::SetData(void?*?data)??
- {??
- ????m_ptrData?=?data;??
- }??
- ??
- vector<CTask*>?CThreadPool::m_vecTaskList;?????????//任務列表???
- bool?CThreadPool::shutdown?=?false;??
- ??????
- pthread_mutex_t?CThreadPool::m_pthreadMutex?=?PTHREAD_MUTEX_INITIALIZER;???
- pthread_cond_t?CThreadPool::m_pthreadCond?=?PTHREAD_COND_INITIALIZER;??
- ??
- /**?
- ?*?線程池管理類構造函數?
- ?*/??
- CThreadPool::CThreadPool(int?threadNum)??
- {??
- ????this->m_iThreadNum?=?threadNum;??
- ????cout?<<?"I?will?create?"?<<?threadNum?<<?"?threads"?<<?endl;??
- ????Create();??
- }??
- ??
- /**?
- ?*?線程回調函數?
- ?*/??
- void*?CThreadPool::ThreadFunc(void*?threadData)??
- {??
- ????pthread_t?tid?=?pthread_self();??
- ????while?(1)??
- ????{??
- ????????pthread_mutex_lock(&m_pthreadMutex);??
- ????????while?(m_vecTaskList.size()?==?0?&&?!shutdown)??
- ????????{??
- ????????????pthread_cond_wait(&m_pthreadCond,?&m_pthreadMutex);??
- ????????}??
- ??????????
- ????????if?(shutdown)??
- ????????{??
- ????????????pthread_mutex_unlock(&m_pthreadMutex);??
- ????????????printf("thread?%lu?will?exit/n",?pthread_self());??
- ????????????pthread_exit(NULL);???
- ????????}??
- ??????????
- ????????printf("tid?%lu?run/n",?tid);??
- ????????vector<CTask*>::iterator?iter?=?m_vecTaskList.begin();??
- ??????????
- ????????/**?
- ????????*?取出一個任務并處理之?
- ????????*/??
- ????????CTask*?task?=?*iter;??
- ????????if?(iter?!=?m_vecTaskList.end())??
- ????????{??
- ????????????task?=?*iter;??
- ????????????m_vecTaskList.erase(iter);??
- ????????}??
- ??????????
- ????????pthread_mutex_unlock(&m_pthreadMutex);??
- ??????????
- ????????task->Run();?/**?執行任務?*/??
- ????????printf("tid:%lu?idle/n",?tid);??
- ????}??
- ????return?(void*)0;??
- }??
- ??
- /**?
- ?*?往任務隊列里邊添加任務并發出線程同步信號?
- ?*/??
- int?CThreadPool::AddTask(CTask?*task)??
- {??
- ????pthread_mutex_lock(&m_pthreadMutex);??
- ????this->m_vecTaskList.push_back(task);??
- ????pthread_mutex_unlock(&m_pthreadMutex);??
- ????pthread_cond_signal(&m_pthreadCond);??
- ????return?0;??
- }??
- ??
- /**?
- ?*?創建線程?
- ?*/??
- int?CThreadPool::Create()??
- {??
- ????pthread_id?=?(pthread_t*)malloc(sizeof(pthread_t)?*?m_iThreadNum);??
- ????for(int?i?=?0;?i?<?m_iThreadNum;?i++)??
- ????{??
- ????????pthread_create(&pthread_id[i],?NULL,?ThreadFunc,?NULL);??
- ????}??
- ????return?0;??
- }??
- ??
- /**?
- ?*?停止所有線程?
- ?*/??
- int?CThreadPool::StopAll()??
- {??
- ????/**?避免重復調用?*/??
- ????if?(shutdown)??
- ????{??
- ????????return?-1;????
- ????}??
- ????printf("Now?I?will?end?all?threads!!/n");??
- ????/**?喚醒所有等待線程,線程池要銷毀了?*/??
- ????shutdown?=?true;??
- ????pthread_cond_broadcast(&m_pthreadCond);??
- ??????
- ????/**?阻塞等待線程退出,否則就成僵尸了?*/??
- ????for?(int?i?=?0;?i?<?m_iThreadNum;?i++)??
- ????{??
- ????????pthread_join(pthread_id[i],?NULL);????
- ????}??
- ??????
- ????free(pthread_id);??
- ????pthread_id?=?NULL;??
- ??????
- ????/**?銷毀條件變量和互斥體?*/??
- ????pthread_mutex_destroy(&m_pthreadMutex);??
- ????pthread_cond_destroy(&m_pthreadCond);??
- ??????
- ????return?0;??
- }??
- ??
- /**?
- ?*?獲取當前隊列中任務數?
- ?*/??
- int?CThreadPool::getTaskSize()??
- {??
- ????return?m_vecTaskList.size();??????
- }??
[cpp]?view plain?copy
- #include?"Thread.h"??
- #include?<iostream>??
- ??
- void?CTask::SetData(void?*?data)??
- {??
- ????m_ptrData?=?data;??
- }??
- ??
- vector<CTask*>?CThreadPool::m_vecTaskList;?????????//任務列表??
- bool?CThreadPool::shutdown?=?false;??
- ??????
- pthread_mutex_t?CThreadPool::m_pthreadMutex?=?PTHREAD_MUTEX_INITIALIZER;???
- pthread_cond_t?CThreadPool::m_pthreadCond?=?PTHREAD_COND_INITIALIZER;??
- ??
- /**?
- ?*?線程池管理類構造函數?
- ?*/??
- CThreadPool::CThreadPool(int?threadNum)??
- {??
- ????this->m_iThreadNum?=?threadNum;??
- ????cout?<<?"I?will?create?"?<<?threadNum?<<?"?threads"?<<?endl;??
- ????Create();??
- }??
- ??
- /**?
- ?*?線程回調函數?
- ?*/??
- void*?CThreadPool::ThreadFunc(void*?threadData)??
- {??
- ????pthread_t?tid?=?pthread_self();??
- ????while?(1)??
- ????{??
- ????????pthread_mutex_lock(&m_pthreadMutex);??
- ????????while?(m_vecTaskList.size()?==?0?&&?!shutdown)??
- ????????{??
- ????????????pthread_cond_wait(&m_pthreadCond,?&m_pthreadMutex);??
- ????????}??
- ??????????
- ????????if?(shutdown)??
- ????????{??
- ????????????pthread_mutex_unlock(&m_pthreadMutex);??
- ????????????printf("thread?%lu?will?exit/n",?pthread_self());??
- ????????????pthread_exit(NULL);???
- ????????}??
- ??????????
- ????????printf("tid?%lu?run/n",?tid);??
- ????????vector<CTask*>::iterator?iter?=?m_vecTaskList.begin();??
- ??????????
- ????????/**?
- ????????*?取出一個任務并處理之?
- ????????*/??
- ????????CTask*?task?=?*iter;??
- ????????if?(iter?!=?m_vecTaskList.end())??
- ????????{??
- ????????????task?=?*iter;??
- ????????????m_vecTaskList.erase(iter);??
- ????????}??
- ??????????
- ????????pthread_mutex_unlock(&m_pthreadMutex);??
- ??????????
- ????????task->Run();?/**?執行任務?*/??
- ????????printf("tid:%lu?idle/n",?tid);??
- ????}??
- ????return?(void*)0;??
- }??
- ??
- /**?
- ?*?往任務隊列里邊添加任務并發出線程同步信號?
- ?*/??
- int?CThreadPool::AddTask(CTask?*task)??
- {??
- ????pthread_mutex_lock(&m_pthreadMutex);??
- ????this->m_vecTaskList.push_back(task);??
- ????pthread_mutex_unlock(&m_pthreadMutex);??
- ????pthread_cond_signal(&m_pthreadCond);??
- ????return?0;??
- }??
- ??
- /**?
- ?*?創建線程?
- ?*/??
- int?CThreadPool::Create()??
- {??
- ????pthread_id?=?(pthread_t*)malloc(sizeof(pthread_t)?*?m_iThreadNum);??
- ????for(int?i?=?0;?i?<?m_iThreadNum;?i++)??
- ????{??
- ????????pthread_create(&pthread_id[i],?NULL,?ThreadFunc,?NULL);??
- ????}??
- ????return?0;??
- }??
- ??
- /**?
- ?*?停止所有線程?
- ?*/??
- int?CThreadPool::StopAll()??
- {??
- ????/**?避免重復調用?*/??
- ????if?(shutdown)??
- ????{??
- ????????return?-1;????
- ????}??
- ????printf("Now?I?will?end?all?threads!!/n");??
- ????/**?喚醒所有等待線程,線程池要銷毀了?*/??
- ????shutdown?=?true;??
- ????pthread_cond_broadcast(&m_pthreadCond);??
- ??????
- ????/**?阻塞等待線程退出,否則就成僵尸了?*/??
- ????for?(int?i?=?0;?i?<?m_iThreadNum;?i++)??
- ????{??
- ????????pthread_join(pthread_id[i],?NULL);????
- ????}??
- ??????
- ????free(pthread_id);??
- ????pthread_id?=?NULL;??
- ??????
- ????/**?銷毀條件變量和互斥體?*/??
- ????pthread_mutex_destroy(&m_pthreadMutex);??
- ????pthread_cond_destroy(&m_pthreadCond);??
- ??????
- ????return?0;??
- }??
- ??
- /**?
- ?*?獲取當前隊列中任務數?
- ?*/??
- int?CThreadPool::getTaskSize()??
- {??
- ????return?m_vecTaskList.size();??????
- }??
?
main函數文件
[cpp]?view plaincopy
- #include?"Thread.h"???
- #include?<iostream>???
- ??
- class?CMyTask:?public?CTask??
- {??
- public:??
- ????CMyTask(){}??
- ??????
- ????inline?int?Run()??
- ????{??
- ????????printf("%s/n",?(char*)this->m_ptrData);??
- ????????sleep(10);??
- ????????return?0;??
- ????}??
- };??
- ??
- int?main()??
- {??
- ????CMyTask?taskObj;??
- ??????
- ????char?szTmp[]?=?"this?is?the?first?thread?running";??
- ????taskObj.SetData((void*)szTmp);??
- ????CThreadPool?threadPool(10);??
- ??????
- ????for(int?i?=?0;?i?<?20;?i++)??
- ????{??
- ????????threadPool.AddTask(&taskObj);??
- ????}??
- ??????
- ????while(1)??
- ????{??
- ????????printf("there?are?still?%d?tasks?need?to?handle/n",?threadPool.getTaskSize());??
- ????????if?(threadPool.getTaskSize()?==?0)??
- ????????{??
- ????????????if?(threadPool.StopAll()?==?-1)??
- ????????????{?????
- ????????????????printf("Now?I?will?exit?from?main/n");??
- ????????????????exit(0);??
- ????????????}??
- ????????}??
- ????????sleep(2);??
- ????}??
- ??????
- ????return?0;??
- }??
[cpp]?view plain?copy
- #include?"Thread.h"??
- #include?<iostream>??
- ??
- class?CMyTask:?public?CTask??
- {??
- public:??
- ????CMyTask(){}??
- ??????
- ????inline?int?Run()??
- ????{??
- ????????printf("%s/n",?(char*)this->m_ptrData);??
- ????????sleep(10);??
- ????????return?0;??
- ????}??
- };??
- ??
- int?main()??
- {??
- ????CMyTask?taskObj;??
- ??????
- ????char?szTmp[]?=?"this?is?the?first?thread?running";??
- ????taskObj.SetData((void*)szTmp);??
- ????CThreadPool?threadPool(10);??
- ??????
- ????for(int?i?=?0;?i?<?20;?i++)??
- ????{??
- ????????threadPool.AddTask(&taskObj);??
- ????}??
- ??????
- ????while(1)??
- ????{??
- ????????printf("there?are?still?%d?tasks?need?to?handle/n",?threadPool.getTaskSize());??
- ????????if?(threadPool.getTaskSize()?==?0)??
- ????????{??
- ????????????if?(threadPool.StopAll()?==?-1)??
- ????????????{?????
- ????????????????printf("Now?I?will?exit?from?main/n");??
- ????????????????exit(0);??
- ????????????}??
- ????????}??
- ????????sleep(2);??
- ????}??
- ??????
- ????return?0;??
- }??
?
Makefile文件
[cpp]?view plaincopy
- CC?:=?g++??
- TARGET?:=?threadpool??
- INCLUDE?:=?-I./??
- LIBS?:=?-lpthread???
- ??
- #?C++語言編譯參數???
- CXXFLAGS?:=?-g?-Wall?-D_REENTRANT???
- ??
- #?C預處理參數???
- #?CPPFLAGS?:=????
- ??
- OBJECTS?:=?test.o?Thread.o???
- ??
- $(TARGET):?$(OBJECTS)???
- ????$(CC)?-o?$(TARGET)?$(OBJECTS)?$(LIBS)???
- ??
- #?$@表示所有目標集???
- %.o:%.cpp???
- ????$(CC)?-c?$(CXXFLAGS)?$(INCLUDE)?$<?-o?$@???
- ??
- .PHONY?:?clean??
- clean:???
- ????-rm?-f?$(OBJECTS)?$(TARGET)??
[cpp]?view plain?copy
- CC?:=?g++??
- TARGET?:=?threadpool??
- INCLUDE?:=?-I./??
- LIBS?:=?-lpthread???
- ??
- #?C++語言編譯參數??
- CXXFLAGS?:=?-g?-Wall?-D_REENTRANT???
- ??
- #?C預處理參數??
- #?CPPFLAGS?:=???
- ??
- OBJECTS?:=?test.o?Thread.o???
- ??
- $(TARGET):?$(OBJECTS)???
- ????$(CC)?-o?$(TARGET)?$(OBJECTS)?$(LIBS)???
- ??
- #?$@表示所有目標集??
- %.o:%.cpp???
- ????$(CC)?-c?$(CXXFLAGS)?$(INCLUDE)?$<?-o?$@???
- ??
- .PHONY?:?clean??
- clean:???
- ????-rm?-f?$(OBJECTS)?$(TARGET)??
?
在Linux上的輸出:
[xhtml]?view plaincopy
- I?will?create?10?threads??
- there?are?still?10?tasks?need?to?handle??
- tid?3086535568?run??
- this?is?the?first?thread?running??
- tid?3084434320?run??
- this?is?the?first?thread?running??
- tid?3082333072?run??
- this?is?the?first?thread?running??
- tid?3080231824?run??
- this?is?the?first?thread?running??
- tid?3078130576?run??
- this?is?the?first?thread?running??
- tid?3076029328?run??
- this?is?the?first?thread?running??
- tid?3073928080?run??
- this?is?the?first?thread?running??
- tid?3071826832?run??
- this?is?the?first?thread?running??
- tid?3069725584?run??
- this?is?the?first?thread?running??
- tid?3067624336?run??
- this?is?the?first?thread?running??
- there?are?still?0?tasks?need?to?handle??
- Now?I?will?end?all?threads!!??
- tid:3086535568?idle??
- tid:3078130576?idle??
- thread?3078130576?will?exit??
- tid:3076029328?idle??
- thread?3076029328?will?exit??
- tid:3073928080?idle??
- thread?3073928080?will?exit??
- tid:3071826832?idle??
- thread?3071826832?will?exit??
- tid:3069725584?idle??
- thread?3069725584?will?exit??
- tid:3067624336?idle??
- thread?3067624336?will?exit??
- tid:3084434320?idle??
- thread?3084434320?will?exit??
- thread?3086535568?will?exit??
- tid:3082333072?idle??
- thread?3082333072?will?exit??
- tid:3080231824?idle??
- thread?3080231824?will?exit??
- there?are?still?0?tasks?need?to?handle??
- Now?I?will?exit?from?main??
[xhtml]?view plain?copy
- I?will?create?10?threads??
- there?are?still?10?tasks?need?to?handle??
- tid?3086535568?run??
- this?is?the?first?thread?running??
- tid?3084434320?run??
- this?is?the?first?thread?running??
- tid?3082333072?run??
- this?is?the?first?thread?running??
- tid?3080231824?run??
- this?is?the?first?thread?running??
- tid?3078130576?run??
- this?is?the?first?thread?running??
- tid?3076029328?run??
- this?is?the?first?thread?running??
- tid?3073928080?run??
- this?is?the?first?thread?running??
- tid?3071826832?run??
- this?is?the?first?thread?running??
- tid?3069725584?run??
- this?is?the?first?thread?running??
- tid?3067624336?run??
- this?is?the?first?thread?running??
- there?are?still?0?tasks?need?to?handle??
- Now?I?will?end?all?threads!!??
- tid:3086535568?idle??
- tid:3078130576?idle??
- thread?3078130576?will?exit??
- tid:3076029328?idle??
- thread?3076029328?will?exit??
- tid:3073928080?idle??
- thread?3073928080?will?exit??
- tid:3071826832?idle??
- thread?3071826832?will?exit??
- tid:3069725584?idle??
- thread?3069725584?will?exit??
- tid:3067624336?idle??
- thread?3067624336?will?exit??
- tid:3084434320?idle??
- thread?3084434320?will?exit??
- thread?3086535568?will?exit??
- tid:3082333072?idle??
- thread?3082333072?will?exit??
- tid:3080231824?idle??
- thread?3080231824?will?exit??
- there?are?still?0?tasks?need?to?handle??
- Now?I?will?exit?from?main??
?