30 lines
707 B
C
30 lines
707 B
C
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include "sema.h"
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int main( int argc, char **argv)
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{
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if(argc < 3) { printf("Usage %s numIPC message\n", argv[0]); exit(EXIT_FAILURE); }
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int *zone;
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int memid;
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int clef = atoi(argv[1]);
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if(clef == -1) { printf("Usage %s numIPC message\n", argv[0]); exit(EXIT_FAILURE); }
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/* création ou lien avec une zone partagée */
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memid = shmget(clef, 100, 0700 | IPC_CREAT);
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if (memid == -1) { perror("shmget"); return (EXIT_FAILURE); }
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/* montage en mémoire */
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zone = shmat(memid, NULL, 0);
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/* utilisation */
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printf("zone[0] = %d\n", zone[0]++ );
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return (EXIT_SUCCESS);
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}
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