40 lines
836 B
C
40 lines
836 B
C
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#include "libnazgul.h"
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void * msgBufferMap(msgSpace * space, int poolIndex, int bufferIndex) {
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void * resultAddr;
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msgBufferInfoTabId bufferInfoTabId;
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int bufferInfoTabFd;
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// TODO: r<>cuperer l'ID du BufferInfoTab;
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strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);
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bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
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if (bufferInfoTabFd<0){
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NZG_ERROR("sem_open",bufferInfoTabId);
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return -1;
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}
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if(msPoolFd == -1) {
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NZG_ERROR("shm_open", space->poolDataTabId);
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goto ERROR;
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}
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// mapper le buffer dans l'espace m<>moire du processus
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resultAddr=mmap(NULL, buffersize, PROT_WRITE|PROT_READ, MAP_SHARED, msPoolFd, (off_t)0);
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if(resultAddr == MAP_FAILED) {
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NZG_ERROR("mmap", poolDataTabId);
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goto ERROR;
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}
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close(msPoolFd);
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return resultAddr;
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ERROR:
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return NULL;
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}
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