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*corection de la fonction msgSpaceListUnlock

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rivka_zan 2004-02-23 16:02:25 +00:00
parent 025e63852c
commit 1a39b8e7f2
1 changed files with 48 additions and 30 deletions
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78
src/nzg_spaceListLocking.c
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@ -4,43 +4,61 @@
// verouille le semaphore de la liste
int msgSpaceListLock(){
sem_t * spacesListSemFd;
msgSpaceListSemId spacesListSemId;
sem_t * spacesListSemFd;
msgSpaceListSemId spacesListSemId;
/*Ouverture d'un verrou d'un semafore*/
//TODO: remplacer par la bonne valeur d'initialisation du
//semaphore
spacesListSemFd=sem_open(spacesListSemId,O_CREAT|O_EXCL,0666,1024);
if(spacesListSemFd==SEM_FAILED){
NZG_ERROR("sem_open",spacesListSemId);
return -1;
}
/*Ouverture d'un verrou d'un semafore*/
//TODO: remplacer par la bonne valeur d'initialisation du
//semaphore
spacesListSemFd=sem_open(spacesListSemId,O_CREAT|O_EXCL,0666,1024);
if(spacesListSemFd==SEM_FAILED){
NZG_ERROR("sem_open",spacesListSemId);
return -1;
}
/*Pose d'un semafore et bloque*/
if(sem_wait(spacesListSemFd)==-1){
NZG_ERROR("sem_wait",spacesListSemId);
return -1;
}
return 0;
/*Pose d'un semaphore et le verrouille*/
if(sem_wait(spacesListSemFd)==-1){
NZG_ERROR("sem_wait",spacesListSemId);
return -1;
}
/* Ferme le semaphore*/
if(sem_close(spacesListSemFd)==-1){
NZG_ERROR("sem_close",spacesListSemId);
return -1;
}
return 0;
}
// deverouille le semaphore de la liste
int msgSpaceListUnlock(){
sem_t * spacesListSemFd;
msgSpaceListSemId spacesListSemId;
/* Ferme le semaphore*/
if(sem_close(spacesListSemFd)==-1){
NZG_ERROR("sem_close",spacesListSemId);
return -1;
}
/*semaphore non bloquant*/
if (sem_trywait(spacesListSemFd)==-1){
NZG_ERROR("sem_trywait",spacesListSemId);
return -1;
}
return 0;
sem_t * spacesListSemFd;
msgSpaceListSemId spacesListSemId;
/*Ouverture dun semaphore*/
spacesListSemFd=sem_open(spacesListSemId,O_CREAT|O_EXCL,0666,1024);
if(spacesListSemFd==SEM_FAILED){
NZG_ERROR("sem_open",spacesListSemId);
return -1;
}
/*Relachement du semaphore*/
if(sem_post(spacesListSemFd)==-1){
NZG_ERROR("sem_relache",spacesListSemId);
return -1;
}
/* Ferme le semaphore*/
if(sem_close(spacesListSemFd)==-1){
NZG_ERROR("sem_close",spacesListSemId);
return -1;
}
return 0;
};