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This commit is contained in:
Philippe Pittoli 2011-03-20 01:21:44 +01:00
parent 07778c1db7
commit 8120c1e351
2 changed files with 20 additions and 9 deletions
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9
C_Language/TP_SYS/tp_sema/consommateur.c
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@ -22,7 +22,6 @@ int main( int argc, char **argv)
int mutex_data, mutex_tpa;
key_t sem_key_data;
key_t sem_key_tpa;
const char CTRL_D = 4;
if(argc < 2) { printf("Usage : %s nSHM \n", argv[0]); exit(EXIT_FAILURE); }
@ -38,11 +37,10 @@ int main( int argc, char **argv)
if((memoireP = (MEMP *) shmat(shmid, 0 , 0766)) == (void *) -1)
{ perror("shmat"); exit(EXIT_FAILURE); }
// MUTEX_2 => DATA
if((mutex_data = creat_sem( sem_key_data, MAX_PROD)) == -1)
if((mutex_data = creat_sem( sem_key_data, 1)) == -1)
{ perror("creat_sem"); exit(EXIT_FAILURE); }
if((mutex_tpa = creat_sem( sem_key_tpa, MAX_PROD)) == -1)
if((mutex_tpa = creat_sem( sem_key_tpa, 1)) == -1)
{ perror("creat_sem"); exit(EXIT_FAILURE); }
P(mutex_data);
@ -51,9 +49,10 @@ int main( int argc, char **argv)
memoireP->queue = 0;
V(mutex_data);
P(mutex_tpa);
for(int i = 0; i < MAX_PROD ; i++)
memoireP->tpa[i] = -1;
V(mutex_tpa);
sleep(10);

20
C_Language/TP_SYS/tp_sema/producteur.c
View file

@ -12,17 +12,29 @@ int main( int argc, char **argv)
{
if(argc < 2) { printf("Usage %s numIPC\n", argv[0]); exit(EXIT_FAILURE); }
MEMP *memoireP;
int mutex_data, mutex_tpa;
key_t sem_key_data;
key_t sem_key_tpa;
int shmid;
int shm_key = atoi(argv[1]);
if(shm_key == -1) { printf("Usage %s numIPC message\n", argv[0]); exit(EXIT_FAILURE); }
/* création ou lien avec une memoireP partagée */
shmid = shmget(shm_key, 100, 0700 | IPC_CREAT);
shmid = shmget(shm_key, sizeof(MEMP), 0766 | IPC_CREAT);
if (shmid == -1) { perror("shmget"); return (EXIT_FAILURE); }
/* montage en mémoire */
memoireP = shmat(shmid, NULL, 0);
if((memoireP = (MEMP *) shmat(shmid, 0 , 0766)) == (void *) -1)
{ perror("shmat"); exit(EXIT_FAILURE); }
if((mutex_data = creat_sem( sem_key_data, 1)) == -1)
{ perror("creat_sem"); exit(EXIT_FAILURE); }
if((mutex_tpa = creat_sem( sem_key_tpa, 1)) == -1)
{ perror("creat_sem"); exit(EXIT_FAILURE); }
P(mutex_data);
V(mutex_data);
/* utilisation */
// printf("memoireP[0] = %d\n", memoireP[0]++ );