很值得学习的Linux C++线程池框架

class CThreadManage {
private:
    CThreadPool* m_Pool;
    int m_NumOfThread;
public:
    CThreadManage();
    CThreadManage(int num);
    virtual ~CThreadManage();

    void SetParallelNum(int num); 
    void Run(CJob* job,void* jobdata);
    void TerminateAll(void);
};

CThreadManage::CThreadManage() {
    m_NumOfThread = 10;
    m_Pool = new CThreadPool(m_NumOfThread);
}

CThreadManage::CThreadManage(int num) {
    m_NumOfThread = num;
    m_Pool = new CThreadPool(m_NumOfThread);
}

CThreadManage::~CThreadManage() {
    if(NULL != m_Pool)
        delete m_Pool;
}

void CThreadManage::SetParallelNum(int num) {
    m_NumOfThread = num;
}

void CThreadManage::Run(CJob* job,void* jobdata) {
    m_Pool->Run(job,jobdata);
}

void CThreadManage::TerminateAll(void) {
    m_Pool->TerminateAll();
}

class CThread {
private:
    int m_ErrCode;
    Semaphore m_ThreadSemaphore; //the inner semaphore, which is used to realize
    unsigned long m_ThreadID; 
    bool m_Detach; //The thread is detached
    bool m_CreateSuspended; //if suspend after creating
    char* m_ThreadName;
    ThreadState m_ThreadState; //the state of the thread
protected:
    void SetErrcode(int errcode){m_ErrCode = errcode;}
    static void* ThreadFunction(void*);
public:
    CThread();
    CThread(bool createsuspended,bool detach);
    virtual ~CThread();

    virtual void Run(void) = 0;
    void SetThreadState(ThreadState state){m_ThreadState = state;}
    bool Terminate(void); //Terminate the threa
    bool Start(void); //Start to execute the thread
    void Exit(void);
    bool Wakeup(void);
    ThreadState GetThreadState(void){return m_ThreadState;}
    int GetLastError(void){return m_ErrCode;}
    void SetThreadName(char* thrname){strcpy(m_ThreadName,thrname);}
    char* GetThreadName(void){return m_ThreadName;}
    int GetThreadID(void){return m_ThreadID;}
    bool SetPriority(int priority);
    int GetPriority(void);
    int GetConcurrency(void);
    void SetConcurrency(int num);
    bool Detach(void);
    bool Join(void);
    bool Yield(void);
    int Self(void);
};

class CThreadPool {
    friend class CWorkerThread;
private:
    unsigned int m_MaxNum; //the max thread num that can create at the same time
    unsigned int m_AvailLow; //The min num of idle thread that shoule kept
    unsigned int m_AvailHigh; //The max num of idle thread that kept at the same time
    unsigned int m_AvailNum; //the normal thread num of idle num;
    unsigned int m_InitNum; //Normal thread num;
protected:
    CWorkerThread* GetIdleThread(void); 
    void AppendToIdleList(CWorkerThread* jobthread);
    void MoveToBusyList(CWorkerThread* idlethread);
    void MoveToIdleList(CWorkerThread* busythread);
    void DeleteIdleThread(int num);
    void CreateIdleThread(int num);
public:
    CThreadMutex m_BusyMutex; //when visit busy list,use m_BusyMutex to lock and unlock
    CThreadMutex m_IdleMutex; //when visit idle list,use m_IdleMutex to lock and unlock
    CThreadMutex m_JobMutex; //when visit job list,use m_JobMutex to lock and unlock
    CThreadMutex m_VarMutex;
    CCondition m_BusyCond; //m_BusyCond is used to sync busy thread list
    CCondition m_IdleCond; //m_IdleCond is used to sync idle thread list
    CCondition m_IdleJobCond; //m_JobCond is used to sync job list
    CCondition m_MaxNumCond;
    vector m_ThreadList;
    vector m_BusyList; //Thread List
    vector m_IdleList; //Idle List
    CThreadPool();
    CThreadPool(int initnum);
    virtual ~CThreadPool(); 
    void SetMaxNum(int maxnum){m_MaxNum = maxnum;}
    int GetMaxNum(void){return m_MaxNum;}
    void SetAvailLowNum(int minnum){m_AvailLow = minnum;}
    int GetAvailLowNum(void){return m_AvailLow;}
    void SetAvailHighNum(int highnum){m_AvailHigh = highnum;}
    int GetAvailHighNum(void){return m_AvailHigh;}
    int GetActualAvailNum(void){return m_AvailNum;}
    int GetAllNum(void){return m_ThreadList.size();}
    int GetBusyNum(void){return m_BusyList.size();}
    void SetInitNum(int initnum){m_InitNum = initnum;}
    int GetInitNum(void){return m_InitNum;}
    void TerminateAll(void);
    void Run(CJob* job,void* jobdata);
};

CThreadPool::CThreadPool() {
    m_MaxNum = 50;
    m_AvailLow = 5;
    m_InitNum=m_AvailNum = 10 ; 
    m_AvailHigh = 20;
    m_BusyList.clear();
    m_IdleList.clear();
    for(int i=0;inew CWorkerThread();
        thr->SetThreadPool(this);
        AppendToIdleList(thr);
        thr->Start();
    }
}

CThreadPool::CThreadPool(int initnum) {
    assert(initnum>0 && initnum<=30);
    m_MaxNum = 30;
    m_AvailLow = initnum-10>0?initnum-10:3;
    m_InitNum=m_AvailNum = initnum ; 
    m_AvailHigh = initnum+10;
    m_BusyList.clear();
    m_IdleList.clear();
    for(int i=0;inew CWorkerThread();
        AppendToIdleList(thr);
        thr->SetThreadPool(this);
        thr->Start(); //begin the thread,the thread wait for job
    }
}

CThreadPool::~CThreadPool() {
    TerminateAll();
}

void CThreadPool::TerminateAll() {
    for(int i=0;i < m_ThreadList.size();i++) {
        CWorkerThread* thr = m_ThreadList[i];
        thr->Join();
    }
    return;
}

CWorkerThread* CThreadPool::GetIdleThread(void) {
    while(m_IdleList.size() ==0 )
    m_IdleCond.Wait();
    m_IdleMutex.Lock();
    if(m_IdleList.size() > 0) {
        CWorkerThread* thr = (CWorkerThread*)m_IdleList.front();
        printf("Get Idle thread %d/n",thr->GetThreadID());
        m_IdleMutex.Unlock();
        return thr;
    }
    m_IdleMutex.Unlock();
    return NULL;
}

//add an idle thread to idle list
void CThreadPool::AppendToIdleList(CWorkerThread* jobthread) {
    m_IdleMutex.Lock();
    m_IdleList.push_back(jobthread);
    m_ThreadList.push_back(jobthread);
    m_IdleMutex.Unlock();
}

//move and idle thread to busy thread
void CThreadPool::MoveToBusyList(CWorkerThread* idlethread) {
    m_BusyMutex.Lock();
    m_BusyList.push_back(idlethread);
    m_AvailNum--;
    m_BusyMutex.Unlock();
    
    m_IdleMutex.Lock();
    vector::iterator pos;
    pos = find(m_IdleList.begin(),m_IdleList.end(),idlethread);
    if(pos !=m_IdleList.end())
        m_IdleList.erase(pos);
    m_IdleMutex.Unlock();
}

void CThreadPool::MoveToIdleList(CWorkerThread* busythread) {
    m_IdleMutex.Lock();
    m_IdleList.push_back(busythread);
    m_AvailNum++;
    m_IdleMutex.Unlock();
    m_BusyMutex.Lock();
    vector::iterator pos;
    pos = find(m_BusyList.begin(),m_BusyList.end(),busythread);
    if(pos!=m_BusyList.end())
        m_BusyList.erase(pos);
    m_BusyMutex.Unlock();
    m_IdleCond.Signal();
    m_MaxNumCond.Signal();
}

//create num idle thread and put them to idlelist
void CThreadPool::CreateIdleThread(int num) {
    for(int i=0;inew CWorkerThread();
        thr->SetThreadPool(this);
        AppendToIdleList(thr);
        m_VarMutex.Lock();
        m_AvailNum++;
        m_VarMutex.Unlock();
        thr->Start(); //begin the thread,the thread wait for job
    }
}

void CThreadPool::DeleteIdleThread(int num)
{
    printf("Enter into CThreadPool::DeleteIdleThread/n");
    m_IdleMutex.Lock();
    printf("Delete Num is %d/n",num);
    for(int i=0;iif(m_IdleList.size() > 0 ){
            thr = (CWorkerThread*)m_IdleList.front();
            printf("Get Idle thread %d/n",thr->GetThreadID());
        }

        vector::iterator pos;
        pos = find(m_IdleList.begin(),m_IdleList.end(),thr);
        if(pos!=m_IdleList.end())
        m_IdleList.erase(pos);
        m_AvailNum--;
        printf("The idle thread available num:%d /n",m_AvailNum);
        printf("The idlelist num:%d /n",m_IdleList.size());
    }
    m_IdleMutex.Unlock();
}

void CThreadPool::Run(CJob* job,void* jobdata) {
    assert(job!=NULL);

    //if the busy thread num adds to m_MaxNum,so we should wait
    if(GetBusyNum() == m_MaxNum)
        m_MaxNumCond.Wait();

    if(m_IdleList.size()if(GetAllNum()+m_InitNum-m_IdleList.size() < m_MaxNum)
            CreateIdleThread(m_InitNum-m_IdleList.size());
        else
            CreateIdleThread(m_MaxNum-GetAllNum());
    }

    CWorkerThread* idlethr = GetIdleThread();
    if(idlethr !=NULL) {
        idlethr->m_WorkMutex.Lock();
        MoveToBusyList(idlethr);
        idlethr->SetThreadPool(this);
        job->SetWorkThread(idlethr);
        printf("Job is set to thread %d /n",idlethr->GetThreadID());
        idlethr->SetJob(job,jobdata);
    }
}

for(int i=0;inew CWorkerThread();
    AppendToIdleList(thr);
    thr->SetThreadPool(this);
    thr->Start(); //begin the thread,the thread wait for job
}

if(GetAllNum()+m_InitNum-m_IdleList.size() < m_MaxNum)
    CreateIdleThread(m_InitNum-m_IdleList.size());
else
    CreateIdleThread(m_MaxNum-GetAllNum());

class CJob {
private:
    int m_JobNo; //The num was assigned to the job
    char* m_JobName; //The job name
    CThread *m_pWorkThread; //The thread associated with the job
public:
    CJob( void );
    virtual ~CJob();

    int GetJobNo(void) const { return m_JobNo; }
    void SetJobNo(int jobno){ m_JobNo = jobno;}
    char* GetJobName(void) const { return m_JobName; }
    void SetJobName(char* jobname);
    CThread *GetWorkThread(void){ return m_pWorkThread; }
    void SetWorkThread ( CThread *pWorkThread ){
        m_pWorkThread = pWorkThread;
    }
    virtual void Run ( void *ptr ) = 0;
};

CJob::CJob(void):m_pWorkThread(NULL),m_JobNo(0),m_JobName(NULL){}

CJob::~CJob(){
    if(NULL != m_JobName)
        free(m_JobName);
}

void CJob::SetJobName(char* jobname) {
    if(NULL !=m_JobName) {
        free(m_JobName);
        m_JobName = NULL;
    }
    if(NULL !=jobname) {
        m_JobName = (char*)malloc(strlen(jobname)+1);
        strcpy(m_JobName,jobname);
    }
}

class CXJob: public CJob {
public:
    CXJob(){i=0;}
    ~CXJob(){}
    void Run(void* jobdata) {
        printf("The Job comes from CXJOB/n");
        sleep(2);
    }
};

class CYJob: public CJob {
public:
    CYJob(){i=0;}
    ~CYJob(){}
    void Run(void* jobdata) {
        printf("The Job comes from CYJob/n");
    }
};

void main() {
    CThreadManage* manage = new CThreadManage(10);
    for(int i=0;i<40;i++) {
        CXJob* job = new CXJob();
        manage->Run(job,NULL);
    }
    sleep(2);
    CYJob* job = new CYJob();
    manage->Run(job,NULL);
    manage->TerminateAll();
}