2004-02-24 10:25:19 +00:00
|
|
|
|
#include "libnazgul.h"
|
|
|
|
|
|
|
|
|
|
|
|
#define NONBLOCK -1
|
|
|
|
|
|
|
|
|
|
|
|
void * msgGet(msgSpace * space,int queueIndex,int option){
|
|
|
|
|
|
void * resultAddr;
|
|
|
|
|
|
// on teste la possibilit<69> 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;
|
|
|
|
|
|
}
|
