37 lines
947 B
C
37 lines
947 B
C
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#include "libnazgul.h"
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int msgBufferDetachProc(
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msgPoolData * poolDataTabAddr,
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int poolIndex,
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int bufferIndex,
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void * addr
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){
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msgBufferInfoTabId bufferInfoTabId;
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int bufferInfoTabFd;
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msgBufferInfo * bufferInfoTabAddr;
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int bufferInfoNb;
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//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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perror("shm_open");
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return -1;
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}
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/** on regarde dans le tableau d'infos de buffer **/
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bufferInfoNb=poolDataTabAddr[poolIndex].bufferNb;
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bufferInfoTabAddr=mmap(NULL,bufferInfoNb*sizeof(msgBufferInfo),
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PROT_READ,MAP_SHARED,bufferInfoTabFd,(off_t)0);
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bufferInfoTabAddr[bufferIndex].ownerPid = (pid_t)-1;
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bufferInfoTabAddr[bufferIndex].addr = NULL;
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if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
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{ perror("munmap"); return -1; }
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return 0;
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}
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