C++ concurrency::wait() 多线程下吃内存的问题

Question

多线程情况下，使用concurrency::wait() 会发生内存暴涨，测试代码如下

#include "stdafx.h"
#include "concrt.h"
#include
#include

using concurrency::event;

static event s_iEvent;

HANDLE s_hThread1(NULL);
HANDLE s_hThread2(NULL);

static unsigned _stdcall testThread(void* pParam)
{
while (true)
{
s_iEvent.set();
s_iEvent.wait(200);
s_iEvent.reset();
}

return 0;

}

int main()
{
s_hThread1 = (HANDLE)_beginthreadex(NULL, 0, &testThread, NULL, 0, NULL);
s_hThread2 = (HANDLE)_beginthreadex(NULL, 0, &testThread, NULL, 0, NULL);

while (1);

return 0;

}

Answer 1

你这里都是死循环反复的set，reset。会消耗系统资源