Enrico Fraccaroli
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/// @file t_stopcont.c
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/// @brief
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/// @copyright (c) 2014-2023 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include <sys/unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include "stdlib.h"
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#include <sys/wait.h>
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int child_pid;
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void wait_for_child(int signr)
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{
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printf("Signal received: %s\n", strsignal(signr));
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sleep(10);
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printf("Sending continue sig to child\n");
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if (kill(child_pid, SIGCONT) == -1)
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printf("Error sending signal\n");
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}
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int main(int argc, char *argv[])
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{
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sigaction_t action;
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memset(&action, 0, sizeof(action));
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action.sa_handler = wait_for_child;
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if (sigaction(SIGCHLD, &action, NULL) == -1) {
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printf("Failed to set signal handler. %d\n", SIGCHLD);
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return EXIT_FAILURE;
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}
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child_pid = fork();
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if (child_pid != 0) {
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printf("Child PID: %d\n", child_pid);
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sleep(2);
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printf("Sending stop sig to child\n");
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#if 1
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if (kill(child_pid, SIGSTOP) == -1)
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printf("Errore invio stop\n");
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#endif
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wait(NULL);
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} else {
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int c = 0;
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for (;;) {
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printf("c: %d\n", c++);
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sleep(3);
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}
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}
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return EXIT_SUCCESS;
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}
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