89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#include "libnazgul.h"
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int msgFree(msgSpace * space, void * addr){
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printf("[ FREE 0x%08x ]\n",(int)addr);
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int poolIndex;
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int bufferIndex;
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int poolDataTabFd;
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msgPoolData * poolDataTabAddr;
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sem_t * poolDataTabSemFd;
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msgPoolDataTabSemId ressourceSemId;
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sem_t * ressourceSemFd;
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/* on acquiert le droit de modifier les infos sur la ressource */
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/* on protege le tableau des associations */
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poolDataTabSemFd=sem_open(space->poolDataTabSemId,
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O_CREAT,SEM_DEFAULT_MODE,1);
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if (poolDataTabSemFd == SEM_FAILED){
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NZG_ERROR("sem_open : ouverture de la ressource",
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space->poolDataTabSemId);
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return -1;
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}
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sem_wait(poolDataTabSemFd);
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/* verifier le premier arg du shm_open */
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poolDataTabFd=shm_open(space->poolDataTabId,
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O_RDWR,
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MSGSPACE_DEFAULT_MODE);
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if (poolDataTabFd == -1 ) {
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fprintf( stderr, "Allocate %s failed: %s\n",
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(char*)space->poolDataTabId,
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strerror( errno ) );
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return -1;
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}
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poolDataTabAddr = mmap( NULL, (space->poolNb) * sizeof( msgPoolData ),
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PROT_READ | PROT_WRITE,
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MAP_SHARED, poolDataTabFd, 0 );
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if( poolDataTabAddr == MAP_FAILED) {
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fprintf( stderr, "mmap failed: %s\n",
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strerror( errno ) );
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return -1;
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}
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// TODO: verouiller semaphore DataInfo
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int err;
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poolIndex=-1; bufferIndex=-1;
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err=msgBufferGetProcAttach(
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poolDataTabAddr,
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space->poolNb,
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&poolIndex,
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&bufferIndex,
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addr
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);
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printf("Found : %d\n",err);
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printf("Freing pool: %d, buffer: %d\n",poolIndex,bufferIndex);
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msgBufferDetachProc(poolDataTabAddr,poolIndex,bufferIndex,addr);
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/* unmapper le msgPoolDataTab */
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munmap(poolDataTabAddr,(space->poolNb) * sizeof( msgPoolData ));
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close(poolDataTabFd);
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// deverouiller semaphore DataInfo
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sem_post(poolDataTabSemFd);
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sem_close(poolDataTabSemFd);
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// deverouiller semaphore ressource.
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msgPoolSemIdIntern(ressourceSemId,space->id,poolIndex);
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ressourceSemFd = sem_open(ressourceSemId,O_CREAT,SEM_DEFAULT_MODE,0);
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if (ressourceSemFd == SEM_FAILED){
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NZG_ERROR("sem_open",ressourceSemId);
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return -1;
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}
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sem_post(ressourceSemFd);
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sem_close(ressourceSemFd);
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//sem_open ressource
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//sem_post
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//sem_close
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return 0;
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}
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