Ajout exo5

This commit is contained in:
2025-08-17 13:25:54 +00:00
parent 9744c9612c
commit b92c10d3d8
4 changed files with 61 additions and 0 deletions

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@@ -9,6 +9,8 @@
*/ */
int sem_create(key_t cle, int initval); int sem_create(key_t cle, int initval);
/** /**
* take a token on the semaphore semid or wait if none available * take a token on the semaphore semid or wait if none available
*/ */

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@@ -20,7 +20,12 @@ void t2()
} }
int main () { int main () {
int semt1 = sem_create(CLE_SEM_T1,0);
int semt2 = sem_create(CLE_SEM_T2,0);
t1(); t1();
V(semt1);
t2(); t2();
V(semt2);
return 0; return 0;
} }

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ANALE-1/EXO5/launcher Executable file

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54
ANALE-1/EXO5/launcher.c Normal file
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@@ -0,0 +1,54 @@
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
int main(void)
{
int tube[2];
int tube2[2];
int res = pipe(tube);
if (res == -1) {
perror("Création Pipe"); exit(-1);
}
int res2 = pipe(tube2);
if (res2 == -1) {
perror("Création Pipe"); exit(-1);
}
pid_t pid_wc = fork();
if (pid_wc == 0) {
// lit depuis tube -> stdin
close(tube[1]);
dup2(tube[0], 0);
close(tube[0]);
// écrit vers tube2 -> stdout
close(tube2[0]); // on ne lit pas tube2 ici
dup2(tube2[1], 1);
close(tube2[1]);
execlp("cat", "cat",NULL); // ou "wc", "-c", NULL pour compter octets, etc.
perror("cat wc");
_exit(1);
}
pid_t pid_data = fork();
if (pid_data == 0) {
close(tube[0]);
write(tube[1],"Bonjour tous le monde\nJe m'appelle Ronan\n",strlen("Bonjour tous le monde\nJe m'appelle Ronan\n"));
close(tube[1]);
}
pid_t pid_read = fork();
if (pid_read == 0) {
char temp[500];
close(tube2[1]);
read(tube2[0],&temp,sizeof(temp));
printf("%s",temp);
close(tube2[0]);
}
return 0;
}