49 lines
908 B
C
49 lines
908 B
C
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#include <sys/types.h>
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#include <sys/shm.h>
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#include <sys/ipc.h>
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#include <errno.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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typedef struct {
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float temp;
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int press;
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char ordre;
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}uneStruct;
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float randomF(){
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return ((float)100.0*(rand()/(RAND_MAX+0.1)));
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}
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int randomI(){
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return ((int)100.0*(rand()/(RAND_MAX+0.1)));
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}
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int main()
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{
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uneStruct *memShare;
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int shmid;
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key_t clef;
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void *shm;
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clef = ftok("/tmp/bidon", 1234);
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shmid = shmget(clef, sizeof(uneStruct), 0666);
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if(shmid < 0)
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{
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perror("Erreur shmget");
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exit(EXIT_FAILURE);
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}
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memShare = shmat(shmid, NULL, 0);
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while(1)
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{
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memShare->press = randomI();
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memShare->temp = randomF();
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printf("Memoire mise a jour.\nVal->\n\tpress : %d, temp : %f\n\n", memShare->press, memShare->temp);
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usleep(999999);
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}
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}
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