52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#include "libnazgul.h"
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int msgBufferGetProcAttach(
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msgPoolData * poolDataTabAddr,
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int poolNb,
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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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bool found=false;
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int pIdx=0;
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int bIdx;
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while ((!found) && (pIdx < poolNb)){
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/* Pour chaque pool */
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//récuperer l'ID du BufferInfoTab;
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strcpy(bufferInfoTabId, poolDataTabAddr[pIdx].bufferInfoTabId);
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bufferInfoNb=poolDataTabAddr[pIdx].bufferNb;
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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("shm_open",bufferInfoTabId); return -1; }
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/** on regarde dans le tableau d'infos de buffer **/
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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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/* on cherche dans chacun des buffers */
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bIdx=0;
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while((!found) && bIdx<bufferInfoNb){
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if (bufferInfoTabAddr[bIdx].addr == addr){
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found=true;
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(*bufferIndex)=bIdx;
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};
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bIdx++;
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}
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if (found){ (*poolIndex)=pIdx; }
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/* on détache le morceau de mémoire */
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if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
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{ NZG_ERROR("munmap",bufferInfoTabId); return -1; }
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close(bufferInfoTabFd);
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pIdx++;
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}
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if (found){ return 0; } else {return -1;}
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}
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