| 1 | #include <sys/types.h> |
| 2 | #include <sys/wait.h> |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <unistd.h> |
| 7 | |
| 8 | void show_proc_pids() { |
| 9 | pid_t current_pid = getpid(); |
| 10 | pid_t parent_pid = getppid(); |
| 11 | |
| 12 | printf("[%d] Mon PID: %d\n", current_pid, current_pid); |
| 13 | printf("[%d] PID du parent: %d\n", current_pid, parent_pid); |
| 14 | } |
| 15 | |
| 16 | int main() { |
| 17 | int status = 0; |
| 18 | printf("Courant:\n"); |
| 19 | show_proc_pids(); |
| 20 | |
| 21 | pid_t cpid = fork(); |
| 22 | |
| 23 | if (cpid == -1) { |
| 24 | printf("Erreur de clonage\n"); |
| 25 | exit(EXIT_FAILURE); |
| 26 | } else if (cpid == 0) { |
| 27 | printf("Fils:\n"); |
| 28 | show_proc_pids(); |
| 29 | exit(EXIT_FAILURE); |
| 30 | } else { |
| 31 | printf("Parent:\n"); |
| 32 | show_proc_pids(); |
| 33 | pid_t wpid = wait(&status); |
| 34 | printf("Fin du PID: %d\n", wpid); |
| 35 | system("ps aux"); |
| 36 | if (WIFEXITED(status)) { |
| 37 | printf("Fils termine, status=%d\n", WEXITSTATUS(status)); |
| 38 | } else if (WIFSIGNALED(status)) { |
| 39 | printf("Fils tue par un signal %d\n", WTERMSIG(status)); |
| 40 | } else if (WIFSTOPPED(status)) { |
| 41 | printf("Fils stoppe par un signal %d\n", WSTOPSIG(status)); |
| 42 | } else if (WIFCONTINUED(status)) { |
| 43 | printf("Fils continue\n"); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | return EXIT_SUCCESS; |
| 48 | } |