53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
#include "libnazgul.h"
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#include "nzg_ids.h"
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/* pid[]
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liste process demandeurs */
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int msgPoolCreate(
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msgSpaceId spaceId,
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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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static int poolNb;
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sem_t * sem;
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msgPoolId poolId;
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msgPoolSemId poolSemId;
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if (msgPoolIdIntern(poolId,spaceId,poolIdx) == -1){
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fprintf( stderr, "msgPoolId creation failed for id %s\n",
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(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 (msgPoolSemIdIntern(poolSemId,spaceId,poolIdx) == -1){
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fprintf( stderr, "msgPoolId creation failed for id %s\n",
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(char*)poolSemId );
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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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sem = sem_open(poolSemId, O_CREAT|O_EXCL, 0666, buffNb);
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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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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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close(poolFd);
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return 0;
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}
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