Windows控制台应用程序-结束事件的信号 [英] Windows console application - signal for closing event

问题描述

在Windows控制台应用程序中，可以使用以下命令捕获 ctrl + c ：

In windows console application, one can catch pressing ctrl+c by using:

#include <stdio.h>
#include <signal.h>

void SigInt_Handler(int n_signal)
{
    printf("interrupted\n");
}

int main(int n_arg_num, const char **p_arg_list)
{
    signal(SIGINT, &SigInt_Handler);
    getchar(); // wait for user intervention
}

此方法很好用，但不适用于如果用户按下十字×关闭控制台窗口，则全部显示。有信号吗？

This works well, except it does not work at all if the user presses the cross × that closes the console window. Is there any signal for that?

我需要这个的原因是我有这个CUDA应用程序，如果在计算内容时关闭它，它往往会使计算机崩溃。该代码是多平台的，因此我更喜欢使用信号，而不是 SetConsoleCtrlHandler 。有办法吗？

The reason I need this is I have this CUDA application which tends to crash the computer if closed while computing something. The code is kind of multiplatform so I'd prefer using signals rather than SetConsoleCtrlHandler. Is there a way?

推荐答案

正确的方法是 SIGBREAK ，您可以尝试以下操作：

The correct one is SIGBREAK, you can try it with:

#include <stdio.h>
#include <signal.h>

void SigInt_Handler(int n_signal)
{
    printf("interrupted\n");
    exit(1);
}

void SigBreak_Handler(int n_signal)
{
    printf("closed\n");
    exit(2);
}

int main(int n_arg_num, const char **p_arg_list)
{
    signal(SIGINT, &SigInt_Handler);
    signal(SIGBREAK, &SigBreak_Handler);
    getchar(); // wait for user intervention
    return 0;
}

关闭控制台窗口后，程序将打印 已关闭 ，并将返回2。

Upon closing the console window, the program will print "closed" and will return 2.

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