38 lines
701 B
C
38 lines
701 B
C
#include "libnazgul.h"
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#include "ids.h"
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#define DEBUG 0
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int msgQueueReadUnlock(msgSpaceId externId, int queueIdx)
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{
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int semval;
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sem_t *queueSemFd;
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msgQueueSemId queueSemId;
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msgQueueReadSemIdIntern(queueSemId, externId, queueIdx);
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if (DEBUG) {
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printf("Unlocking %s\n", queueSemId);
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}
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queueSemFd = sem_open(queueSemId, O_CREAT, SEM_DEFAULT_MODE, 1);
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if (queueSemFd == SEM_FAILED) {
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NZG_ERROR("sem_open", queueSemId);
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goto ERROR;
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}
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if (sem_post(queueSemFd) == -1) {
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NZG_ERROR("sem_post", queueSemId);
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goto ERROR;
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}
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semval = 0;
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sem_getvalue(queueSemFd, &semval);
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if (DEBUG) {
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printf("(AfterValue:%d)\n", semval);
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}
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sem_close(queueSemFd);
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return 0;
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ERROR:
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return -1;
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}
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