C++设置一个函数的运行时间，如果超时，就跳过该函数

#include<Windows.h>
#include<iostream>
#include<tchar.h>
#include<string>
#include<ctime>
using namespace std;

struct mytime//定义一个传入函数的结构体
{
	int t1;
	int t2;
};


DWORD WINAPI f1(LPVOID lpParameter)//定义一个需要运行的函数
{
	mytime* t = (mytime*)lpParameter;
	cout << t->t1 << "   " << t->t2 << endl;
	Sleep(t->t1 + t->t2);
	return 0;
}


int main()
{
	clock_t start_time = clock();
	mytime T = { 3000,5000 };
	HANDLE hThread1;
	hThread1 = CreateThread(NULL, 0, f1, &T, 0, NULL);//运行f1函数，并传入结构体参数
	

	int signal=WaitForSingleObject(hThread1, 4000);//设置运行4s
    //如果超出4s，则跳过该函数
	if (signal != WAIT_OBJECT_0)
	{
		cout << "time out" << endl;
		TerminateProcess(hThread1, -1);
	}
	CloseHandle(hThread1);

	clock_t end_time = clock();
	cout << "The run time is: " << (double)(end_time-start_time) / CLOCKS_PER_SEC << "s" << endl;
}

3000   5000
time out
The run time is: 4.001s

原本该函数应该睡眠8s后，退出，由于定时4s，所以超时后，直接退出了该函数。

#include<Windows.h>
#include<iostream>
#include<tchar.h>
#include<string>
#include<ctime>
using namespace std;

struct mytime
{
	int t1;
	int t2;
};


DWORD WINAPI f1(LPVOID lpParameter)
{
	mytime* t = (mytime*)lpParameter;
	cout << t->t1 << "   " << t->t2 << endl;
	Sleep(t->t1 + t->t2);
	return 0;
}


int main()
{
	clock_t start_time = clock();
	mytime T = { 3000,5000 };
	HANDLE hThread1;
	hThread1 = CreateThread(NULL, 0, f1, &T, 0, NULL);
	

	int signal=WaitForSingleObject(hThread1, INFINITE);//一直等到f1函数运行完

	if (signal != WAIT_OBJECT_0)
	{
		cout << "time out" << endl;
		TerminateProcess(hThread1, -1);
	}
	CloseHandle(hThread1);

	clock_t end_time = clock();
	cout << "The run time is: " << (double)(end_time-start_time) / CLOCKS_PER_SEC << "s" << endl;
}

3000   5000
The run time is: 8.001s

如果不设置定时，那么就会直到该函数运行8s后，自动退出