结束超时的耗时线程 - 两种方法

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有时候我们需要线程执行指定的时间后， 结束它，

例如，让采集线程采集100秒的数据。

这时， 就需要在线程超过时间限制后结束它。

 

下面给出了Win32 console小例子， 使用VC++ 2005编译：

 

 // main.cpp 主程序#define WIN32_LEAN_AND_MEAN#include <windows.h>#include <stdio.h>HANDLE hEvent;// 全局Event对象HANDLE hThread;// 全局线程对象bool bFlag;// 控制线程循环的条件DWORD WINAPI FuncThreadA(LPVOID p);DWORD WINAPI FuncThreadB(LPVOID p);int funcA(void);int funcB(void);int main(int argc, char** argv){hEvent = INVALID_HANDLE_VALUE;hThread = INVALID_HANDLE_VALUE;bFlag = false;// ----- 以下2段代码择一检测之 -------//int ret = funcA();//printf("funcA return: %d/n", ret);int ret = funcB();printf("funcB return: %d/n", ret);// ---------------------------------------if(hThread != INVALID_HANDLE_VALUE)CloseHandle(hThread);if(hEvent != INVALID_HANDLE_VALUE)CloseHandle(hEvent);getchar();return 0;}// funcA()在线程操作超时时， 使用Event对象结束之int funcA(void){hEvent = CreateEvent(NULL, FALSE, TRUE, NULL);DWORD threadID;int value = 111;hThread = CreateThread(NULL, 0, FuncThreadA, (LPVOID)&value, 0, &threadID);DWORD ret = WaitForSingleObject(hThread, 3000);if(ret == WAIT_OBJECT_0){return 0;}else if(ret == WAIT_TIMEOUT){ResetEvent(hEvent);return 1;}return 2;}// funcB()在线程操作超时时， 改变线程的循环条件bFlag结束之int funcB(void){DWORD threadID;int value = 222;bFlag = true;hThread = CreateThread(NULL, 0, FuncThreadB, (LPVOID)&value, 0, &threadID);DWORD ret = WaitForSingleObject(hThread, 3000);if(ret == WAIT_OBJECT_0){return 0;}else if(ret == WAIT_TIMEOUT){bFlag = false;return 1;}return 2;}// FuncThreadA()使用Event对象的信号态来控制循环DWORD WINAPI FuncThreadA(LPVOID p){int value = *(int*)p;while(1){DWORD ret = WaitForSingleObject(hEvent, INFINITE);if(ret == WAIT_OBJECT_0){// do somethig....printf("-%d-/n", value);Sleep(100);SetEvent(hEvent);}}return 0;}// FuncThreadB()使用bool型的循环条件控制循环DWORD WINAPI FuncThreadB(LPVOID p){int value = *(int*)p;while(bFlag == true){// do somethig....printf("-%d-/n", value);Sleep(100);}return 0;}