version 1.73, 2011/09/18 13:10:10
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version 1.75, 2011/09/19 17:33:17
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Line 59 static volatile struct_liste_chainee_vol
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Line 59 static volatile struct_liste_chainee_vol
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= NULL; |
= NULL; |
static volatile int code_erreur_gsl = 0; |
static volatile int code_erreur_gsl = 0; |
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static unsigned char *racine_segment; |
unsigned char *racine_segment; |
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static pthread_mutex_t mutex_interruptions |
static pthread_mutex_t mutex_interruptions |
= PTHREAD_MUTEX_INITIALIZER; |
= PTHREAD_MUTEX_INITIALIZER; |
Line 2372 envoi_signal_processus(pid_t pid, enum s
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Line 2372 envoi_signal_processus(pid_t pid, enum s
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{ |
{ |
int segment; |
int segment; |
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sem_t *semaphore; |
# ifndef IPCS_SYSV |
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# ifdef SEMAPHORES_NOMMES |
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sem_t *semaphore; |
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# endif |
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# else |
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int desc; |
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key_t clef; |
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# endif |
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struct_queue_signaux *queue; |
struct_queue_signaux *queue; |
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Line 2387 envoi_signal_processus(pid_t pid, enum s
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Line 2394 envoi_signal_processus(pid_t pid, enum s
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if (s_queue_signaux == NULL) |
if (s_queue_signaux == NULL) |
{ |
{ |
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uprintf("Paf !\n"); |
return(1); |
return(1); |
} |
} |
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Line 2421 envoi_signal_processus(pid_t pid, enum s
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Line 2429 envoi_signal_processus(pid_t pid, enum s
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{ |
{ |
// Le signal est envoyé depuis un processus distinct. |
// Le signal est envoyé depuis un processus distinct. |
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if ((nom = nom_segment(racine_segment, pid)) == NULL) |
# ifdef IPCS_SYSV |
{ |
if ((nom = nom_segment(racine_segment, getpid())) == NULL) |
return(1); |
{ |
} |
return(1); |
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} |
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if ((desc = open(nom, O_RDWR)) == -1) |
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{ |
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free(nom); |
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return(1); |
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} |
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close(desc); |
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if ((clef = ftok(nom, 1)) == -1) |
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{ |
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free(nom); |
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return(1); |
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} |
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if ((segment = shm_open(nom, O_RDWR, 0)) == -1) |
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{ |
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free(nom); |
free(nom); |
return(1); |
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} |
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free(nom); |
if ((segment = shmget(clef, sizeof(struct_queue_signaux), 0)) == -1) |
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{ |
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return(1); |
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} |
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if ((queue = mmap(NULL, sizeof(struct_queue_signaux), |
queue = shmat(segment, NULL, 0); |
PROT_READ | PROT_WRITE, MAP_SHARED, segment, 0)) == |
# else // POSIX |
MAP_FAILED) |
if ((nom = nom_segment(racine_segment, pid)) == NULL) |
{ |
{ |
close(segment); |
return(1); |
return(1); |
} |
} |
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# ifndef SEMAPHORES_NOMMES |
if ((segment = shm_open(nom, O_RDWR, 0)) == -1) |
if (sem_wait(&((*queue).semaphore)) != 0) |
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{ |
{ |
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free(nom); |
return(1); |
return(1); |
} |
} |
# else |
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if ((semaphore = sem_open2(pid)) == SEM_FAILED) |
free(nom); |
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if ((queue = mmap(NULL, sizeof(struct_queue_signaux), |
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PROT_READ | PROT_WRITE, MAP_SHARED, segment, 0)) == |
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MAP_FAILED) |
{ |
{ |
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close(segment); |
return(1); |
return(1); |
} |
} |
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# endif |
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if (sem_wait(semaphore) != 0) |
// À ce moment, le segment de mémoire partagée est projeté |
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// dans l'espace du processus. |
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# ifndef IPCS_SYSV // POSIX |
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# ifndef SEMAPHORES_NOMMES |
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if (sem_wait(&((*queue).semaphore)) != 0) |
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{ |
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return(1); |
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} |
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# else |
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if ((semaphore = sem_open2(pid)) == SEM_FAILED) |
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{ |
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return(1); |
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} |
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if (sem_wait(semaphore) != 0) |
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{ |
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sem_close(semaphore); |
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return(1); |
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} |
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# endif |
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# else // IPCS_SYSV |
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if (sem_wait(&((*queue).semaphore)) != 0) |
{ |
{ |
sem_close(semaphore); |
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return(1); |
return(1); |
} |
} |
# endif |
# endif |
Line 2466 envoi_signal_processus(pid_t pid, enum s
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Line 2514 envoi_signal_processus(pid_t pid, enum s
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(*queue).pointeur_ecriture = ((*queue).pointeur_ecriture + 1) |
(*queue).pointeur_ecriture = ((*queue).pointeur_ecriture + 1) |
% LONGUEUR_QUEUE_SIGNAUX; |
% LONGUEUR_QUEUE_SIGNAUX; |
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# ifndef SEMAPHORES_NOMMES |
# ifndef IPCS_SYSV // POSIX |
if (sem_post(&((*queue).semaphore)) != 0) |
# ifndef SEMAPHORES_NOMMES |
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if (sem_post(&((*queue).semaphore)) != 0) |
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{ |
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return(1); |
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} |
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# else |
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if (sem_post(semaphore) != 0) |
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{ |
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sem_close(semaphore); |
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return(1); |
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} |
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if (sem_close(semaphore) != 0) |
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{ |
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return(1); |
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} |
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# endif |
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if (munmap(queue, sizeof(struct_queue_signaux)) != 0) |
{ |
{ |
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close(segment); |
return(1); |
return(1); |
} |
} |
# else |
# else // IPCS_SYSV |
if (sem_post(semaphore) != 0) |
if (sem_post(&((*queue).semaphore)) != 0) |
{ |
{ |
sem_close(semaphore); |
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return(1); |
return(1); |
} |
} |
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if (sem_close(semaphore) != 0) |
if (shmdt(queue) != 0) |
{ |
{ |
return(1); |
return(1); |
} |
} |
# endif |
# endif |
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if (munmap(queue, sizeof(struct_queue_signaux)) != 0) |
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{ |
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close(segment); |
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return(1); |
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} |
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close(segment); |
close(segment); |
} |
} |
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Line 2637 creation_queue_signaux(struct_processus
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Line 2697 creation_queue_signaux(struct_processus
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} |
} |
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free(nom); |
free(nom); |
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# ifndef SEMAPHORES_NOMMES |
# ifndef SEMAPHORES_NOMMES |
sem_init(&((*s_queue_signaux).semaphore), 1, 1); |
sem_init(&((*s_queue_signaux).semaphore), 1, 1); |
# else |
# else |
if ((semaphore_queue_signaux = sem_init2(0, getpid())) |
if ((semaphore_queue_signaux = sem_init2(1, getpid())) |
== SEM_FAILED) |
== SEM_FAILED) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_processus; |
(*s_etat_processus).erreur_systeme = d_es_processus; |
Line 2656 creation_queue_signaux(struct_processus
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Line 2717 creation_queue_signaux(struct_processus
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(*s_etat_processus).erreur_systeme = d_es_processus; |
(*s_etat_processus).erreur_systeme = d_es_processus; |
return; |
return; |
} |
} |
# else // SystemV |
# else // IPCS_SYSV |
# ifndef OS2 |
# ifndef OS2 |
file *desc; |
int segment; |
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int support; |
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key_t clef; |
key_t clef; |
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// Création d'un segment de données associé au PID du processus |
// Création d'un segment de données associé au PID du processus |
// courant |
// courant |
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chemin = (*s_etat_processus).chemin_fichiers_temporaires; |
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if ((nom = nom_segment((*s_etat_processus) |
if ((nom = nom_segment((*s_etat_processus) |
.chemin_fichiers_temporaires, getpid())) == NULL) |
.chemin_fichiers_temporaires, getpid())) == NULL) |
{ |
{ |
Line 2674 creation_queue_signaux(struct_processus
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Line 2734 creation_queue_signaux(struct_processus
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return; |
return; |
} |
} |
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if ((desc = fopen(nom, "w")) == NULL) |
if ((support = open(nom, O_RDWR | O_CREAT | O_EXCL | |
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S_IRUSR | S_IWUSR)) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_erreur_fichier; |
(*s_etat_processus).erreur_systeme = d_es_erreur_fichier; |
return; |
return; |
} |
} |
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fclose(desc); |
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if ((clef = ftok(nom, 1)) == -1) |
if ((clef = ftok(nom, 1)) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
return; |
return; |
} |
} |
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close(support); |
free(nom); |
free(nom); |
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if ((segment = shmget(clef, |
if ((segment = shmget(clef, sizeof(struct_queue_signaux), |
nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int), |
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IPC_CREAT | IPC_EXCL | S_IRUSR | S_IWUSR)) == -1) |
IPC_CREAT | IPC_EXCL | S_IRUSR | S_IWUSR)) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
return; |
return; |
} |
} |
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fifos = shmat(segment, NULL, 0); |
s_queue_signaux = shmat(segment, NULL, 0); |
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f_queue_signaux = segment; |
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if (((void *) fifos) == ((void *) -1)) |
if (((void *) s_queue_signaux) == ((void *) -1)) |
{ |
{ |
if (shmctl(segment, IPC_RMID, 0) == -1) |
if (shmctl(f_queue_signaux, IPC_RMID, 0) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = |
(*s_etat_processus).erreur_systeme = |
d_es_allocation_memoire; |
d_es_allocation_memoire; |
Line 2712 creation_queue_signaux(struct_processus
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Line 2772 creation_queue_signaux(struct_processus
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
return; |
return; |
} |
} |
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sem_init(&((*s_queue_signaux).semaphore), 1, 1); |
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(*s_queue_signaux).pointeur_lecture = 0; |
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(*s_queue_signaux).pointeur_ecriture = 0; |
# else // OS/2 |
# else // OS/2 |
if ((nom = nom_segment(NULL, getpid())) == NULL) |
if ((nom = nom_segment(NULL, getpid())) == NULL) |
{ |
{ |
Line 2755 liberation_queue_signaux(struct_processu
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Line 2819 liberation_queue_signaux(struct_processu
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{ |
{ |
# ifdef IPCS_SYSV // SystemV |
# ifdef IPCS_SYSV // SystemV |
# ifndef OS2 |
# ifndef OS2 |
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if (shmdt(s_queue_signaux) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
# else // OS/2 |
# else // OS/2 |
# endif |
# endif |
# else // POSIX |
# else // POSIX |
Line 2797 destruction_queue_signaux(struct_process
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Line 2866 destruction_queue_signaux(struct_process
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# ifdef IPCS_SYSV // SystemV |
# ifdef IPCS_SYSV // SystemV |
# ifndef OS2 |
# ifndef OS2 |
if (shmdt(fifos) == -1) |
// Il faut commencer par éliminer le sémaphore. |
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if (semctl((*s_queue_signaux).semaphore.sem, 0, IPC_RMID) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_processus; |
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return; |
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} |
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unlink((*s_queue_signaux).semaphore.path); |
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if (shmdt(s_queue_signaux) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
return; |
return; |
} |
} |
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if (shmctl(segment, IPC_RMID, 0) == -1) |
if (shmctl(f_queue_signaux, IPC_RMID, 0) == -1) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
return; |
return; |
Line 2816 destruction_queue_signaux(struct_process
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Line 2895 destruction_queue_signaux(struct_process
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return; |
return; |
} |
} |
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// FERMER LE FICHIER |
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unlink(nom); |
unlink(nom); |
free(nom); |
free(nom); |
# else |
# else |