多线程完成多个任务

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typedef struct _THREADINOF{  BOOL *bExitFlag;  //退出标志(共用)  HANDLE hExitEvent; //退出事件(共用)  HANDLE hRunEvent; //运行事件  HANDLE hDoneEvent; //运行完成事件  BOOL bThreadIsRuning; //线程运行中  UINT uThreadIndex; //线程索引  UINT uTaskID; //任务ID  LPCRITICAL_SECTION lpCriticalSection; //临界区  //…… 其它信息}THREADINOF;UINT ThreadFunction(LPVOID lParam){  THREADINOF *pThreadInfo = (THREADINOF*)lParam;  //参数检查  ASSERT(pThreadInfo);  ASSERT(pThreadInfo->bExitFlag);  ASSERT(pThreadInfo->hExitEvent);  ASSERT(pThreadInfo->hRunEvent);  ASSERT(pThreadInfo->hDoneEvent);  //……其它初始化工作  while(pThreadInfo)  {    //等待事件    HANDLE hMultEvent[] = {pThreadInfo->hExitEvent, pThreadInfo->hRunEvent};    switch(WaitForMultipleObjects(2, hMultEvent, FALSE, INFINITE))    {    case(WAIT_OBJECT_0)://exit event      {        return -1;      }    case(WAIT_OBJECT_0 + 1)://run event      {        break;      }    default://error      {        ASSERT(FALSE);        break;      }    }    pThreadInfo->bThreadIsRuning = TRUE; //线程运行中    BOOL bTreadDone = FALSE;    for(;(!bTreadDone) && (*pThreadInfo->bExitFlag == 0);)    {            //……线程运行代码      //模拟某些长时间的操作      {        Sleep(rand()/32);      }      //某些必须的临界区操作      if(pThreadInfo->lpCriticalSection)        EnterCriticalSection(pThreadInfo->lpCriticalSection);      //临界区代码      TRACE(_T("Thead(%u) Task(%u)\n"),        pThreadInfo->uThreadIndex,        pThreadInfo->uTaskID);      //退出临界区      if(pThreadInfo->lpCriticalSection)        LeaveCriticalSection(pThreadInfo->lpCriticalSection);      if(1)//满足线程任务完成条件      {        bTreadDone = TRUE;        break; //跳出循环      }      else//为其它线程留出时间      {        Sleep(100);        //SwitchToThread();//切换线程      }    }    //线程运行完成，通知父进程    {      SetEvent(pThreadInfo->hDoneEvent);      pThreadInfo->bThreadIsRuning = FALSE;//线程结束    }  }  return 0;}void RunTask(){#define MAX_THREAD_NUM 4//最多线程数  BOOL bTreadExitFlag = FALSE; //线程退出标志  HANDLE hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL); //线程退出事件  HANDLE hRunEvent[MAX_THREAD_NUM] = {0};//通知线程运行事件  HANDLE hDoneEvent[MAX_THREAD_NUM] = {0};//线程运行完成事件  THREADINOF ThreadInfo[MAX_THREAD_NUM] = {0};  HANDLE hThread[MAX_THREAD_NUM] = {0};  CRITICAL_SECTION mCriticalSection;  InitializeCriticalSection(&mCriticalSection);  //创建线程  {    for(int i=0; i<MAX_THREAD_NUM; i++)    {      VERIFY(hRunEvent[i] = CreateEvent(NULL, FALSE, FALSE, NULL));      VERIFY(hDoneEvent[i] = CreateEvent(NULL, TRUE, TRUE, NULL));      ThreadInfo[i].uThreadIndex = i;      ThreadInfo[i].bExitFlag = &bTreadExitFlag;      ThreadInfo[i].hExitEvent = hExitEvent;      ThreadInfo[i].hRunEvent = hRunEvent[i];      ThreadInfo[i].hDoneEvent = hDoneEvent[i];      ThreadInfo[i].lpCriticalSection = &mCriticalSection;      //……其它参数      hThread[i] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadFunction, &ThreadInfo[i], 0, NULL);      ASSERT(hThread[i]);    }  }  //运行线程    UINT uTaskID = 0;  BOOL bOverFlag = FALSE;  while(1)  {    if(bOverFlag) //任务结束    {      WaitForMultipleObjects(MAX_THREAD_NUM, hDoneEvent, TRUE, INFINITE);//等待所有线程结束      break;    }    else //执行任务    {      DWORD dwWait = WaitForMultipleObjects(MAX_THREAD_NUM, hDoneEvent, FALSE, INFINITE);      if(dwWait >= (WAIT_OBJECT_0 + MAX_THREAD_NUM))      {        ASSERT(FALSE);      }      else      {        int iThread = dwWait;        if(uTaskID < 100) //有新任务可以分配        {          //分配新任务          //ThreadInfo[i].xxx 设置新参数          ThreadInfo[iThread].uTaskID = uTaskID++; //          ResetEvent(ThreadInfo[iThread].hDoneEvent); //复位就绪事件          SetEvent(ThreadInfo[iThread].hRunEvent); //激活线程                  }        else//所有任务完成        {          bOverFlag = TRUE;        }      }    }  }  //结束线程  {    bTreadExitFlag = TRUE;    SetEvent(hExitEvent);    WaitForMultipleObjects(MAX_THREAD_NUM, hThread, TRUE, INFINITE);  }  //清理工作  {    #define DoCloseHandle(h) do{ if(h)CloseHandle(h); h=NULL; }while(0);    DoCloseHandle(hExitEvent);    for(int i=0; i<MAX_THREAD_NUM; i++)    {      DoCloseHandle(hRunEvent[i]);      DoCloseHandle(hDoneEvent[i]);    }    DeleteCriticalSection(&mCriticalSection);  }}

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线程 'Win32 线程' (0xcd4) 已退出，返回值为 -1 (0xffffffff)。
线程 'Win32 线程' (0xe58) 已退出，返回值为 -1 (0xffffffff)。
线程 'Win32 线程' (0xf94) 已退出，返回值为 -1 (0xffffffff)。
线程 'Win32 线程' (0xce4) 已退出，返回值为 -1 (0xffffffff)。