void CThreadPool::Run(CJob* job,void* jobdata)
{
if(job==NULL)
return;
//assert(job!=NULL);
//if the busy thread num adds to m_MaxNum,so we should wait
if(GetBusyNum() == m_MaxNum)
{
printf(")))))))))))))))))All is busy((((((((((((((((((,wait!\n");
m_MaxNumCond.Wait();
}
//if the threads num after creating is also below m_MaxNum
//so we can create new idle threads,else we needn't create,just to use the idle thread
//printf("GetBusyNum():%d\n",GetBusyNum());
//printf("m_IdleList.size():%d\n",m_IdleList.size());
//printf("m_InitNum:%d\n",m_InitNum);
//printf("GetAllNum()+m_InitNum-m_IdleList.size():%d\n",GetAllNum()+m_InitNum-m_IdleList.size());
if(m_IdleList.size()<m_AvailLow)
{
if(GetAllNum()+m_InitNum-m_IdleList.size() < m_MaxNum )
{
printf("m_IdleList.size() < m_AvailLow,so new thread should be created \n");
CreateIdleThread(m_InitNum-m_IdleList.size());
}
else
{
CreateIdleThread(m_MaxNum-GetAllNum());
}
}
/*
if(m_IdleList.size()<m_AvailLow && GetAllNum()+m_InitNum-m_IdleList.size()<m_MaxNum)
{
printf("m_IdleList.size() < m_AvailLow,so new thread should be created \n");
CreateIdleThread(m_InitNum-m_IdleList.size());
}
else if(m_IdleList.size()<m_AvailLow && m_MaxNum-GetAllNum() < m_AvailLow)
{
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);
}
}
//create num idle thread and put them to idlelist
void CThreadPool::CreateIdleThread(int num)
{
for(int i=0;i<num;i++)
{
CWorkerThread* thr = new CWorkerThread();
thr->SetThreadPool(this);
AppendToIdleList(thr);
m_VarMutex.Lock();
m_AvailNum++;
m_VarMutex.Unlock();
//printf("===============Create A New Thread================\n");
thr->Start(); //begin the thread,the thread wait for job
}
}
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;i<m_AvailNum;i++)
{
//printf("create a thread\n");
CWorkerThread* thr = new 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;i<m_AvailNum;i++)
{
//printf("create a thread\n");
CWorkerThread* thr = new CWorkerThread();
AppendToIdleList(thr);
thr->SetThreadPool(this);
thr->Start(); //begin the thread,the thread wait for job
}
}