glenux-school/l3.libnazgul
glenux-school/l3.libnazgul
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glenux 2004-02-24 10:25:19 +00:00
parent 38ce79adda
commit 7d5bed91a1
2 changed files with 33 additions and 0 deletions
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29
src/get.c
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@ -0,0 +1,29 @@
#include "libnazgul.h"
#define NONBLOCK -1
void * msgGet(msgSpace * space,int queueIndex,int option){
void * resultAddr;
// on teste la possibilité de lecture sur la liste...
if (option == NONBLOCK){
if (msgQueueReadTryLock(space->externId,queueIndex) <0){
NZG_ERROR("msgQueueReadTryLock",space->externId);
goto ERROR;
}
} else {
if (msgQueueReadLock(space->externId,queueIndex) <0){
NZG_ERROR("msgQueueReadLock",space->externId);
goto ERROR;
}
}
// la lecture est possible
// on essaye donc de modifier la liste
msgQueueProtLock(space->externId,queueIndex);
// on a fini de modifier la liste
msgQueueProtUnlock(space->externId,queueIndex);
return resultAddr;
ERROR:
return NULL;
}

4
src/proto.h
View file

@ -19,6 +19,8 @@ int msgBufferInfoTabCreate(msgSpaceId externId, msgPoolData *poolDataTabAddr, in
int msgBufferInfoTabInit(msgPoolData *poolDataTabAddr, int poolIndex); int msgBufferInfoTabInit(msgPoolData *poolDataTabAddr, int poolIndex);
/* free.c */ /* free.c */
int msgFree(msgSpace *space, void *addr); int msgFree(msgSpace *space, void *addr);
/* get.c */
void *msgGet(msgSpace *space, int queueIndex, int option);
/* ids.c */ /* ids.c */
int msgSpaceIdIntern(msgSpaceId dest, const msgSpaceId src); int msgSpaceIdIntern(msgSpaceId dest, const msgSpaceId src);
int msgPoolDataTabSemIdIntern(msgPoolSemId destSemId, const msgSpaceId externId); int msgPoolDataTabSemIdIntern(msgPoolSemId destSemId, const msgSpaceId externId);
@ -70,6 +72,8 @@ int msgQueueProtLock(msgSpaceId externId, int queueIdx);
int msgQueueProtUnlock(msgSpaceId externId, int queueIdx); int msgQueueProtUnlock(msgSpaceId externId, int queueIdx);
/* queueReadLock.c */ /* queueReadLock.c */
int msgQueueReadLock(msgSpaceId externId, int queueIdx); int msgQueueReadLock(msgSpaceId externId, int queueIdx);
/* queueReadTryLock.c */
int msgQueueReadTryLock(msgSpaceId externId, int queueIdx);
/* queueReadUnlock.c */ /* queueReadUnlock.c */
int msgQueueReadUnlock(msgSpaceId externId, int queueIdx); int msgQueueReadUnlock(msgSpaceId externId, int queueIdx);
/* queueRem.c */ /* queueRem.c */