glenux-school/l3.libnazgul
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glenux 2004-02-24 09:22:26 +00:00
parent 3f9f6ead4a
commit 7da4394734
3 changed files with 51 additions and 20 deletions
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21
src/ids.c
View file

@ -87,7 +87,7 @@ int msgBufferInfoTabIdIntern(
return 0;
}
int msgQueueSemIdIntern(
int msgQueueProtSemIdIntern(
msgQueueSemId dest,
msgSpaceId externId,
int queueIdx){
@ -95,9 +95,24 @@ int msgQueueSemIdIntern(
return -1;
}
#ifdef _NZG_REALFILEID
sprintf(dest,"/tmp/nzgQueue-%s-%d",(char *)externId,queueIdx);
sprintf(dest,"/tmp/nzgQueueProtSem-%s-%d",(char *)externId,queueIdx);
#else
sprintf(dest,"/nzgQueue-%s-%d",(char *)externId,queueIdx);
sprintf(dest,"/nzgQueueProtSem-%s-%d",(char *)externId,queueIdx);
#endif
return 0;
}
int msgQueueReadSemIdIntern(
msgQueueSemId dest,
msgSpaceId externId,
int queueIdx){
if (strlen(externId)>MSGSPACE_ID_LEN){
return -1;
}
#ifdef _NZG_REALFILEID
sprintf(dest,"/tmp/nzgQueueReadSem-%s-%d",(char *)externId,queueIdx);
#else
sprintf(dest,"/nzgQueueReadSem-%s-%d",(char *)externId,queueIdx);
#endif
return 0;
}

3
src/proto.h
View file

@ -26,7 +26,8 @@ int msgPoolSemIdIntern(msgPoolSemId destSemId, const msgSpaceId srcPoolId, int p
int msgPoolDataIdIntern(msgPoolDataTabId dest, const msgSpaceId src);
int msgPoolIdIntern(msgPoolId dest, msgPoolId src, int num);
int msgBufferInfoTabIdIntern(msgBufferInfoTabId dest, msgSpaceId src, int num);
int msgQueueSemIdIntern(msgQueueSemId dest, msgSpaceId externId, int queueIdx);
int msgQueueProtSemIdIntern(msgQueueSemId dest, msgSpaceId externId, int queueIdx);
int msgQueueReadSemIdIntern(msgQueueSemId dest, msgSpaceId externId, int queueIdx);
int msgQueueIdIntern(msgQueueId dest, msgSpaceId externId, int queueIdx);
int msgQueueElemIdIntern(msgQueueElemId dest, msgQueueId src, int counter);
int spaceListElemIdIntern(msgSpaceListElemId elemListId, msgSpaceId externId);

47
src/queueInit.c
View file

@ -4,11 +4,38 @@
msgQueue * queueInit(msgSpaceId externId, int queueIdx) {
int queueFd;
msgQueue * queue;
sem_t * semaphore;
sem_t * semProtectFd;
msgQueueSemId queueSemProtectId;
sem_t * semReadableFd;
msgQueueSemId queueSemReadableId;
msgQueueId queueId;
queue = NULL;
msgQueueProtSemIdIntern(queueSemProtectId,externId,queueIdx);
msgQueueReadSemIdIntern(queueSemReadableId,externId,queueIdx);
// creation du semaphore de lecture
semReadableFd = sem_open(queueSemReadableId,
O_CREAT|O_EXCL, SEM_DEFAULT_MODE, 0);
if(semReadableFd == SEM_FAILED) {
NZG_ERROR("sem_open", queueSemReadableId);
goto ERROR;
}
// creation du semaphore de protection
semProtectFd = sem_open(queueSemProtectId,
O_CREAT|O_EXCL, SEM_DEFAULT_MODE, 1);
if(semProtectFd == SEM_FAILED) {
NZG_ERROR("sem_open", queueSemProtectId);
goto ERROR;
}
if(sem_wait(semProtectFd)==-1){
NZG_ERROR("sem_wait",queueSemProtectId);
goto ERROR;
}
if(msgQueueIdIntern(queueId, externId, queueIdx) < 0) {
return NULL;
}
@ -32,25 +59,13 @@ msgQueue * queueInit(msgSpaceId externId, int queueIdx) {
strcpy(queue->tailId,queue->id);
// creation du semaphore
semaphore = sem_open(queueId, O_CREAT|O_EXCL, SEM_DEFAULT_MODE, 1);
if(semaphore == SEM_FAILED) {
NZG_ERROR("sem_open", queueId);
goto ERROR;
}
if(sem_wait(semaphore)==-1){
NZG_ERROR("sem_wait",queueId);
goto ERROR;
}
/* on ferme tout ce qu'il faut */
sem_close(semaphore);
sem_close(semProtectFd);
close(queueFd);
return queue;
ERROR:
return NULL;
}