l3.libnazgul/src/spaceListInit.c
2020-03-03 23:46:32 +01:00

48 lines
1 KiB
C

#include "libnazgul.h"
int msgSpaceListInit(){
int descMemory;
sem_t * spacesListSemFd;
msgSpaceListSemId spacesListSemId;
msgSpaceListElemId spacesListId;
/*Creation de semaphore*/
spacesListSemFd=sem_open(msgSpaceListSemId,O_CREAT|O_EXCL,0666,0);
if(spacesListSemFd==SEM_FAILED){
NZG_ERROR("sem_open",msgSpaceListSemId);
goto ERROR;
}
/*Fait un segment de memoir partager sur espace de listelement*/
descMemory=shm_open(msgSpaceListId,O_RDWR|O_CREAT|O_EXCL|O_TRUNC,0600);
if (descMemory == -1){
descMemory=shm_open(msgSpaceListId,O_RDWR|O_TRUNC,0600);
if (descMemory == -1){
NZG_ERROR("shm_open",spacesListId);
goto ERROR;
} else {
close(descMemory);
goto EXISTING;
}
}
/*Creation de semaphore*/
spacesListSemFd=sem_open(spacesListSemId,O_CREAT|O_EXCL,0666,0);
if(spacesListSemFd==SEM_FAILED){
NZG_ERROR("sem_open",spacesListSemId);
goto ERROR;
}
msgSpaceListUnlock();
return 0;
ERROR:
return -1;
EXISTING:
return 0;
};