51 lines
987 B
C
51 lines
987 B
C
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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void action1 (int signum); /* sur SIGUSR1 */
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void action2 (int signum); /* sur SIGTERM */
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void action3 (int signum);/* sur SIGUSR2 */
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int pid;
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int main(int argc, char *argv[]) {
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pid = fork();
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if (pid == 0) {
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execl("travailleur", "travailleur", NULL);
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}
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printf("PID du père : %d\n", getpid());
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signal(SIGUSR1, &action1);
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signal(SIGUSR2, &action3);
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signal(SIGTERM, &action2);
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pause();
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return EXIT_SUCCESS;
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}
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void action1 (int signum) {
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/* Le fils a terminé son travail */
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printf("Mon fils m'a envoyé SIGUSR1\n");
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kill(pid, SIGUSR2);
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pause();
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kill(pid, SIGKILL);
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}
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void action2(int signum) {
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/* on recoit un signal de l'exterieur pour forcer la sauvegarde
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du fils */
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printf("Le shell m'a envoyé SIGTERM\n");
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kill(pid, SIGUSR2);
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pause();
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kill(pid, SIGKILL);
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}
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void action3(int signum) {
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printf(" Recu SIGUSR2 du fils\n");
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kill(pid, SIGKILL);
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}
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