2011-03-17 16:49:20 +01:00
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#include <stdlib.h>
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#include <assert.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/sem.h>
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2011-03-10 14:08:58 +01:00
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void erreur(char *s);
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int open_sem(key_t cle);
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void P(int semid);
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void V(int semid);
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2011-03-17 17:15:13 +01:00
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/*-----------------------------------------------------------*/
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int creat_sem(key_t cle, ushort val);
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/* creation du semaphore cle ayant comme valeur initiale val
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retourne un identificateur de semaphore >=0 ou -1 si erreur
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*/
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/*--------------------------------------------------------------*/
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int del_sem(key_t cle);
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/* destruction du semaphore cle
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retourne:
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0 si la destruction du semaphore s est effectuee correctement
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-1 si erreur
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*/
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/* recherche le semaphore cle
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retourne l'identificateur du semaphore >=0 ou -1 si erreur
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*/
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