What's the most reliable way to handle Ctrl-C events in C ?

Reliable Ctrl-C Handling in C

Question:

How can we gracefully capture a Ctrl-C event in C ?

Response:

While using signal is a common approach, it's not always reliable across different implementations. A more robust method is recommended using sigaction.

Here's the modified code based on Tom's example:

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

void my_handler(int s) {
  printf("Caught signal %d\n", s);
  exit(1); // or perform other necessary actions
}

int main() {
  struct sigaction sigIntHandler;

  sigIntHandler.sa_handler = my_handler;
  sigemptyset(&sigIntHandler.sa_mask);
  sigIntHandler.sa_flags = 0;

  sigaction(SIGINT, &sigIntHandler, NULL);

  pause(); // block the main thread until a Ctrl-C signal is received

  return 0;
}

In this revised code, we use sigaction to register a signal handler function, my_handler. This function is executed when a Ctrl-C (SIGINT) signal is received. By using sigaction, we gain more control over the signal handling mechanisms, making our event capturing more reliable.

The above is the detailed content of What's the most reliable way to handle Ctrl-C events in C ?. For more information, please follow other related articles on the PHP Chinese website!