int main(int argc, char ** argv)
{
sensor_init_client();
init_timer(5,0);
/************* EXEMPLE *******************/
// On a 2 capteurs sur la carte
//struct sensor sensor_board[2];
//sensor_board.
//uint8_t * data = "\x00\x03\xFC\x01\x01\x01\x02\x02\x01\x02\x03\x02\x01\x12\xFF"; // essaie inform
uint8_t * data = "\x00\x00\xFE\x01";
uint8_t len = 4;
uint8_t ip[2] = {0, 0};
rawdata_sensor(data, len, ip);
uint8_t * data_2 = "\x00\x01\xFC\xF2\x01\x01\x01";
uint8_t len_2 = 4;
uint8_t ip_2[2] = {0, 0};
rawdata_sensor(data_2, len_2, ip_2);
#ifdef __DEBUG__
printf("PID : %d \n", getpid());
#endif
//signal(1024, test_sig);
while(!kbhit());
sensor_close_client();
remove_semaphore();
return 0;
}
PRIVATE void update_one_semaphore(struct sem_struct *sem, int is_remove)
{
int i, j, nr;
struct semaphore *semaphore;
endpoint_t who;
nr = sem->semid_ds.sem_nsems;
if (is_remove) {
for (i = 0; i < nr; i++) {
semaphore = &sem->sems[i];
for (j = 0; j < semaphore->semzcnt; j++)
send_message_to_process(semaphore->zlist[j].who, EIDRM, 0);
for (j = 0; j < semaphore->semncnt; j++)
send_message_to_process(semaphore->nlist[j].who, EIDRM, 0);
}
remove_semaphore(sem);
return;
}
for (i = 0; i < nr; i++) {
semaphore = &sem->sems[i];
if (semaphore->zlist && !semaphore->semval) {
/* choose one process, policy: FIFO. */
who = semaphore->zlist[0].who;
memmove(semaphore->zlist, semaphore->zlist+1,
sizeof(struct waiting) * (semaphore->semzcnt-1));
--semaphore->semzcnt;
send_message_to_process(who, OK, 0);
}
if (semaphore->nlist) {
for (j = 0; j < semaphore->semncnt; j++) {
if (semaphore->nlist[j].val <= semaphore->semval) {
semaphore->semval -= semaphore->nlist[j].val;
who = semaphore->nlist[j].who;
memmove(semaphore->nlist+j, semaphore->nlist+j+1,
sizeof(struct waiting) * (semaphore->semncnt-j-1));
--semaphore->semncnt;
send_message_to_process(who, OK, 0);
/* choose only one process */
break;
}
}
}
}
}
int main()
{
int key = 123 ;
int memsize = sizeof(int) ;
int shmemId = create_shmem(key, memsize) ;
if (shmemId == -1) {
perror("shared segment creation error") ;
exit(EXIT_FAILURE) ;
}
int* buffer = (int*) attach_shmem(shmemId) ;
*buffer = 0 ;
int emptySemKey = 100 ;
int emptySemId = create_semaphore(emptySemKey) ;
int fullSemKey = 101 ;
int fullSemId = create_semaphore(fullSemKey) ;
if ((emptySemId == -1) || (fullSemId == -1)) {
perror("semaphore creation error") ;
exit(EXIT_FAILURE) ;
}
init_semaphore(fullSemId, 0) ;
init_semaphore(emptySemId, 1) ;
while (*buffer >= 0) {
down(emptySemId) ;
if (!scanf("%d", buffer))
*buffer = -1 ;
up(fullSemId) ;
}
remove_semaphore(fullSemId) ;
remove_semaphore(emptySemId) ;
detach_shmem(buffer) ;
remove_shmem(shmemId) ;
}
