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115 lines
2.5 KiB
115 lines
2.5 KiB
#include <unistd.h>
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#include <errno.h>
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#include <sys/wait.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 <string.h>
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# define TAILLE_BUF 80 // 80 = taille d'une ligne
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void fermeTubesPere(int N, int tubes[N][2]) {
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int i;
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for (i=0 ; i<N ; i++) {
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close(tubes[i][0]);
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}
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}
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void fermeTubesFils(int N, int tubes[N][2]) {
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int i;
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for (i=0 ; i<N ; i++) {
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close(tubes[i][1]);
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}
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}
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void fermeAutresTubes(int N, int tubes[N][2], int numTube) {
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int i;
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for (i=0 ; i<N ; i++) {
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if(i != numTube) {
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close(tubes[i][0]);
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}
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}
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}
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void fermeTubes(int N, int tubes[N][2]) {
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int i;
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for (i=0 ; i<N ; i++) {
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close(tubes[i][0]);
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close(tubes[i][1]);
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}
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}
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void codeDuFils(int N, int tubes[N][2], int numFils) {
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char buffer[TAILLE_BUF];
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unsigned int cpt = 0;
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// for(i=0;)
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while (read(tubes[numFils][0], buffer, TAILLE_BUF)) {
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cpt++;
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printf("\t\e[1;33mFils n° %d : %d : lecture de\e[1;31m %s\e[0m\n", numFils, cpt, buffer);
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}
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printf("Fils se termine sur fin de lecteure du tube\n");
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fermeTubesFils(N, tubes);
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fermeAutresTubes(N, tubes, numFils);
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exit(0);
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}
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void codeDuPere(int N, int tubes[N][2], int i) {
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char buffer[TAILLE_BUF];
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while(fgets(buffer, TAILLE_BUF, stdin) != NULL){
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write(tubes[i][1], buffer, TAILLE_BUF);
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}
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fermeTubes(N, tubes);
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wait(NULL);
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printf("Pere se termine apès son fils.\n");
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exit(EXIT_SUCCESS);
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}
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int main(int argc, char *argv[])
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{
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int i, etat, N;
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pid_t pid;
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int tubes[100][2];
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int *tmp;
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if (argc!=2) {
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fputs("Donner un arg entier\n", stderr);
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exit(1);
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}
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N=atoi(argv[1]);
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if (N <= 0 || N > 100) {
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fprintf(stderr, "N doit être un entier positif ou inférieur à 100.\n");
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exit(1);
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}
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if(pipe(tubes[0])== -1) {
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perror(" pipe ");
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exit(errno);
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}
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tmp = (int*)malloc(sizeof(int) * 2 * N);
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if(tmp == NULL){
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printf("Erreur Malloc");
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exit(EXIT_FAILURE);
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}
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/* le pere va creer N fils */
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for (i=0 ; i<N ; i++) {
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if((pid=fork())==-1) {
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perror("pb fork");
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exit(errno);
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}
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else if (pid==0) {
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fermeTubesFils(i, tubes);
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codeDuFils(N, tubes, i);
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exit(0);
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/* le ieme fils ne doit pas retourner dans la boucle */
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}
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}
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fermeTubesPere(N, tubes);
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codeDuPere(N, tubes, 3);
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return 0;
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} |