77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
#include "libnazgul.h"
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#include "ids.h"
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int msgSpaceListInit(){
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int spaceListFd;
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sem_t * spaceListSemFd;
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msgSpaceList *list;
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msgSpaceListSemId spaceListSemId;
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msgSpaceListId spaceListId;
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strcpy(spaceListSemId,DEFAULT_MSGSPACELISTSEMID);
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strcpy(spaceListId,DEFAULT_MSGSPACELISTID);
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/* Creation de semaphore */
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spaceListSemFd=sem_open(spaceListSemId,O_CREAT|O_EXCL,0666,0);
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if(spaceListSemFd==SEM_FAILED){
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spaceListSemFd=sem_open(spaceListSemId,O_CREAT,0666,0);
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if(spaceListSemFd==SEM_FAILED){
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NZG_ERROR("sem_open",spaceListSemId);
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goto ERROR;
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}
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}
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/*Fait un segment de memoir partager sur espace de listelement*/
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spaceListFd=shm_open(spaceListId,
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O_RDWR|O_CREAT|O_EXCL|O_TRUNC,
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0666);
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if (spaceListFd == -1){
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spaceListFd=shm_open(spaceListId,O_RDWR,0666);
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if (spaceListFd == -1){
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NZG_ERROR("shm_open",spaceListId);
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goto ERROR;
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} else {
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close(spaceListFd);
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goto EXISTING;
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}
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}
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if (ftruncate(spaceListFd, sizeof(msgSpaceList)) < 0){
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NZG_ERROR("ftruncate",spaceListId);
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goto ERROR;
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}
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close(spaceListFd);
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list=msgSpaceListOpen();
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if (list == NULL){
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NZG_ERROR("msgSpaceListOpen","");
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goto ERROR;
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}
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strcpy(list->id,spaceListId);
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strcpy(list->headId,spaceListId);
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strcpy(list->tailId,spaceListId);
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if (msgSpaceListClose(list) <0){
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NZG_ERROR("msgSpaceListClose","");
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goto ERROR;
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}
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if (msgSpaceListUnlock() < 0){
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NZG_ERROR("msgSpaceListUnlock","");
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goto ERROR;
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}
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return 0;
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ERROR:
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return -1;
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EXISTING:
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if (msgSpaceListUnlock() < 0){
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NZG_ERROR("msgSpaceListUnlock","");
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goto ERROR;
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}
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return 0;
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};
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