62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include "libnazgul.h"
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#include "ids.h"
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int msgPoolCreate(
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msgSpaceId externId,
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int poolIdx,
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int buffNb,
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int buffSize
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) {
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int poolFd;
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sem_t * ressourceSemFd;
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msgPoolId poolId;
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msgPoolSemId poolRessourceSemId;
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/* creation des buffers DEBUT */
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if (msgPoolIdIntern(poolId,externId,poolIdx) == -1){
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fprintf( stderr, "msgPoolId creation failed for id %s\n", (char*)poolId );
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return -1;
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}
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poolFd=shm_open(poolId,O_RDWR|O_CREAT|O_EXCL|O_TRUNC,MSGSPACE_DEFAULT_MODE);
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if (poolFd == -1 ) {
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fprintf( stderr, "msgPool : %s creation failed: %s\n",poolId,
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strerror( errno ) );
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return -1;
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}
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if (ftruncate(poolFd, (buffSize*buffNb)) == -1){
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fprintf( stderr, "msgPool resizing failed: %s\n",
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strerror( errno ) );
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return -1;
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}
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/* creation des buffers FIN */
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if (msgPoolSemIdIntern(poolRessourceSemId,externId,poolIdx) == -1){
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fprintf( stderr, "msgPoolId creation failed for id %s\n",
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(char*)poolRessourceSemId );
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return -1;
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}
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// on met un semaphore sur le pool
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ressourceSemFd = sem_open(poolRessourceSemId, O_CREAT|O_EXCL,SEM_DEFAULT_MODE, buffNb);
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if (ressourceSemFd == SEM_FAILED){
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NZG_ERROR("sem_open : creation de la ressource",poolRessourceSemId);
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goto ERROR;
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} else {
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printf("[ Created %s with %d ressources ]\n",poolRessourceSemId,buffNb);
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}
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//TODO: verrifier les erreurs sur l'ouverture de la sem
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sem_close(ressourceSemFd);
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// on met le pool a la taille voulue pour qu'il
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// puisse contenir les buffs
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close(poolFd);
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return 0;
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ERROR:
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return -1;
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}
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