38 lines
1 KiB
C
38 lines
1 KiB
C
#include "libnazgul.h"
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int msgBufferDetachProc(msgPoolData * poolDataTabAddr,
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int poolIndex, int bufferIndex, 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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printf("Detaching %d,%d\n", poolIndex, bufferIndex);
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//récuperer 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("shm_open", bufferInfoTabId);
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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 | PROT_WRITE, MAP_SHARED,
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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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NZG_ERROR("munmap", bufferInfoTabId);
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return -1;
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}
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return 0;
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}
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