From 6d8453bae1c1652f1d0ce6d5fc49779a2498310d Mon Sep 17 00:00:00 2001
From: anperederi <antoine.perederii@etu.uca.fr>
Date: Tue, 7 Nov 2023 08:58:35 +0100
Subject: [PATCH] Add system's TP

---
 2A/systeme/tp/3_tp/pereFilsMultiple   | Bin 34112 -> 34008 bytes
 2A/systeme/tp/3_tp/pereFilsMultiple.c | 109 ++++++++++----------------
 2 files changed, 43 insertions(+), 66 deletions(-)

diff --git a/2A/systeme/tp/3_tp/pereFilsMultiple b/2A/systeme/tp/3_tp/pereFilsMultiple
index 9736e05e968014fdc722b2f55736fc5cb9bc9a8c..6296cff482753e2e6b29191c82bd1291392f56eb 100755
GIT binary patch
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diff --git a/2A/systeme/tp/3_tp/pereFilsMultiple.c b/2A/systeme/tp/3_tp/pereFilsMultiple.c
index 1823d02..fe8faa3 100644
--- a/2A/systeme/tp/3_tp/pereFilsMultiple.c
+++ b/2A/systeme/tp/3_tp/pereFilsMultiple.c
@@ -3,39 +3,12 @@
 #include <sys/wait.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <string.h>
 
-# define TAILLE_BUF 80 // 80 = taille d'une ligne
-
-
-void fermeTubesPere(int N, int tubes[N][2]) {
-    int i;
-    for (i=0 ; i<N ; i++) {
-        close(tubes[i][0]);
-    }
-}
+#define TAILLE_BUF 80 // 80 = taille d'une ligne
 
 void fermeTubesFils(int N, int tubes[N][2]) {
-    int i;
-    for (i=0 ; i<N ; i++) {
-        close(tubes[i][1]);
-    }
-}
-
-void fermeAutresTubes(int N, int tubes[N][2], int numTube) {
-    int i;
-    for (i=0 ; i<N ; i++) {
-        if(i != numTube) {
-            close(tubes[i][0]);
-        }
-    }
-}
-
-void fermeTubes(int N, int tubes[N][2]) {
-    int i;
-    for (i=0 ; i<N ; i++) {
-        close(tubes[i][0]);
+    for (int i = 0; i < N; i++) {
         close(tubes[i][1]);
     }
 }
@@ -43,73 +16,77 @@ void fermeTubes(int N, int tubes[N][2]) {
 void codeDuFils(int N, int tubes[N][2], int numFils) {
     char buffer[TAILLE_BUF];
     unsigned int cpt = 0;
-    // for(i=0;)
-    while (read(tubes[numFils][0], buffer, TAILLE_BUF)) {
+
+    close(tubes[numFils][1]);  // Fermer l'extrémité d'écriture inutile du tube
+
+    while (read(tubes[numFils][0], buffer, TAILLE_BUF) > 0) {
         cpt++;
         printf("\t\e[1;33mFils n° %d : %d : lecture de\e[1;31m %s\e[0m\n", numFils, cpt, buffer);
     }
-    printf("Fils se termine sur fin de lecteure du tube\n");
-    fermeTubesFils(N, tubes);
-    fermeAutresTubes(N, tubes, numFils);
+
+    printf("Fils se termine sur fin de lecture du tube\n");
+    close(tubes[numFils][0]);
     exit(0);
 }
 
 void codeDuPere(int N, int tubes[N][2], int i) {
     char buffer[TAILLE_BUF];
+    close(tubes[i][0]);  // Fermer l'extrémité de lecture inutile du tube
+
+    while (fgets(buffer, TAILLE_BUF, stdin) != NULL) {
+        int dest_process;
+        char text[TAILLE_BUF];
+        if (sscanf(buffer, "%d %[^\n]", &dest_process, text) == 2 && dest_process >= 0 && dest_process < N) {
+            // Écriture du texte dans le tube du processus destinataire approprié
+            write(tubes[dest_process][1], text, strlen(text));
+        } else {
+            fprintf(stderr, "Message invalide (il faut mettre le numero du fils en 1er) : %s", buffer);
+        }
+    }
 
-    while(fgets(buffer, TAILLE_BUF, stdin) != NULL){
-            write(tubes[i][1], buffer, TAILLE_BUF);
+    fermeTubesFils(N, tubes);
+    for (int j = 0; j < N; j++) {
+        wait(NULL);  // Attendre que tous les fils se terminent
     }
 
-    fermeTubes(N, tubes);
-    wait(NULL);
-    printf("Pere se termine apès son fils.\n");
+    printf("Père se termine après ses fils.\n");
     exit(EXIT_SUCCESS);
 }
 
-int main(int argc, char *argv[])
-{
-    int i, etat, N;
+int main(int argc, char *argv[]) {
+    int i, N;
     pid_t pid;
     int tubes[100][2];
-    int *tmp;
 
-    if (argc!=2) {
-        fputs("Donner un arg entier\n", stderr);
+    if (argc != 2) {
+        fputs("Donnez un argument entier.\n", stderr);
         exit(1);
     }
 
-    N=atoi(argv[1]); 
+    N = atoi(argv[1]);
     if (N <= 0 || N > 100) {
         fprintf(stderr, "N doit être un entier positif ou inférieur à 100.\n");
         exit(1);
     }
-    if(pipe(tubes[0])== -1) { 
-        perror(" pipe "); 
-        exit(errno); 
-    }
-    tmp = (int*)malloc(sizeof(int) * 2 * N);
 
-    if(tmp == NULL){
-        printf("Erreur Malloc");
-        exit(EXIT_FAILURE);
+    // Créez les tubes pour la communication entre les processus
+    for (i = 0; i < N; i++) {
+        if (pipe(tubes[i]) == -1) {
+            perror("pipe");
+            exit(errno);
+        }
     }
 
-    /* le pere va creer N fils */
-    for (i=0 ; i<N ; i++) {
-        if((pid=fork())==-1) {
+    /* Le père va créer N fils */
+    for (i = 0; i < N; i++) {
+        if ((pid = fork()) == -1) {
             perror("pb fork");
             exit(errno);
-        }
-        else if (pid==0) {
-            fermeTubesFils(i, tubes);
-            codeDuFils(N, tubes, i);
-            exit(0); 
-            /* le ieme fils ne doit pas retourner dans la boucle */
+        } else if (pid == 0) {
+            codeDuFils(N, tubes, i);  // Code du fils
         }
     }
 
-    fermeTubesPere(N, tubes);
-    codeDuPere(N, tubes, 3);
+    codeDuPere(N, tubes, 0);  // Code du père (utilisation du premier tube)
     return 0;
-}
\ No newline at end of file
+}