| 1 | //exemple1.c |
| 2 | |
| 3 | #define _REENTRANT |
| 4 | #include <pthread.h> |
| 5 | #include <unistd.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdio.h> |
| 8 | |
| 9 | static void afficher(int n, char lettre) |
| 10 | { |
| 11 | int j; |
| 12 | for (j = 1; j < n; j++) { |
| 13 | printf("%c", lettre); |
| 14 | fflush(stdout); |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | static void *threadA(void *inutilise) |
| 19 | { |
| 20 | afficher(100, 'A'); |
| 21 | printf("\n Fin du thread A\n"); |
| 22 | fflush(stdout); |
| 23 | pthread_exit(NULL); |
| 24 | } |
| 25 | |
| 26 | static void *threadC(void *inutilise) |
| 27 | { |
| 28 | afficher(150, 'C'); |
| 29 | printf("\n Fin du thread C\n"); |
| 30 | fflush(stdout); |
| 31 | pthread_exit(NULL); |
| 32 | } |
| 33 | |
| 34 | static void *threadB(void *inutilise) |
| 35 | { |
| 36 | pthread_t thC; |
| 37 | pthread_create(&thC, NULL, threadC, NULL); |
| 38 | afficher(100, 'B'); |
| 39 | printf("\n Le thread B attend la fin du thread C\n"); |
| 40 | pthread_join(thC, NULL); |
| 41 | printf("\n Fin du thread B\n"); |
| 42 | fflush(stdout); |
| 43 | pthread_exit(NULL); |
| 44 | } |
| 45 | |
| 46 | int main() |
| 47 | { |
| 48 | pthread_t thA, thB; |
| 49 | printf("Création du Thread A\n"); |
| 50 | pthread_create(&thA, NULL, threadA, NULL); |
| 51 | pthread_create(&thB, NULL, threadB, NULL); |
| 52 | sleep(1); // simule un traitement |
| 53 | printf("Le processus principal attend que les autres se terminent\n"); |
| 54 | // attendre la fin des threads |
| 55 | pthread_join(thA, NULL); |
| 56 | pthread_join(thB, NULL); |
| 57 | exit(0); |
| 58 | } |