/* Ustawia atrybut detached */
void make_attr_detached()
{
int thr_err;
if ((thr_err = pthread_attr_init(&attr)) != 0)
syserr_ext(thr_err, "Error in pthread_attr_init");
if ((thr_err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED)) != 0)
syserr_ext(thr_err, "Error in pthread_attr_setdetachstate");
}
// ------------------------------------------------------------------------------------------------------------
void initialize_sem(int semid, unsigned short values[]){
union semun arg; // union to pass to semctl()
arg.array = values;
if ( semctl(semid, 0, SETALL, arg) == -1){
syserr_ext ("utils.c" , "semctl", __LINE__);
}
}
int main(int argc, char *argv[])
{
L = atol(argv[1]);
K = atol(argv[2]);
M = atol(argv[3]);
if (signal(SIGINT, exit_server) == SIG_ERR)
syserr("Error in signal (SIGINT)");
init_queues();
int thr_err;
pthread_t thread_id;
make_attr_detached();
if (thr_err = pthread_rwlock_init(&rwlock, NULL))
syserr_ext(thr_err, "Error in function pthread_rwlock_init");
Mesg mesg;
int bytes_rcvd;
while (1)
{
if ((bytes_rcvd = msgrcv(msg_rcv_id, &mesg, MAX_BUFF, 0, 0)) <= 0)
syserr("Error in msgrcv (receiving type(pid))");
mesg.mesg_data[bytes_rcvd] = '\0';
if (mesg.mesg_type == READ_TYPE_KOM)
{
if ((thr_err = pthread_create(&thread_id, &attr, serve_committee, &mesg.mesg_data)) != 0)
syserr_ext(thr_err, "Error in pthread_create (for serve_committee)");
}
else
{
if ((thr_err = pthread_create(&thread_id, &attr, serve_report, &mesg.mesg_data)) != 0)
syserr_ext(thr_err, "Error in pthread_create (for serve_report)");
}
}
exit_server(0);
}
// ------------------------------------------------------------------------------------------------------------
void check_semval(int semid, int nsems){
printf("check init values of semid %d\n", semid);
union semun arg; // union to pass to semctl()
arg.array = NULL;
if( semctl(semid, 0, GETALL, arg) == -1 ){
syserr_ext ("utils.c" , "semctl", __LINE__);
}
int i;
for(i = 0; i < nsems; i++){
printf("%hu ", arg.array[i]);
}
printf("\n");
}
/* Obsłużenie przerwania procesu - m.in. usuwanie kolejek */
void exit_server(int sig)
{
int thr_err;
if (msgctl(msg_rcv_id, IPC_RMID, 0) == -1)
syserr("Error in msgctl RMID (msg_rcv_id)");
if (msgctl(msg_rcv_det_id, IPC_RMID, 0) == -1)
syserr("Error in msgctl RMID (msg_rcv_det_id)");
if (msgctl(msg_snd_rap_id, IPC_RMID, 0) == -1)
syserr("Error in msgctl RMID (msg_snd_rap_id)");
if (msgctl(msg_snd_kom_id, IPC_RMID, 0) == -1)
syserr("Error in msgctl RMID (msg_snd_kom_id)");
if ((thr_err = pthread_attr_destroy(&attr)) != 0)
syserr_ext(thr_err, "attrdestroy");
exit(0);
}
// ------------------------------------------------------------------------------------------------------------
void delete_sem(int semid){
if (semctl(semid, 0, IPC_RMID, NULL) == -1)
syserr_ext ("utils.c" , "semctl", __LINE__);
}
// ============================================================================================================
// FUNCTIONS FOR - SEMAPHORE
// ============================================================================================================
int do_semget(key_t key, int nsems){
int semid;
if (( semid = semget(key, nsems, IPC_CREAT | 0777)) == -1)
syserr_ext ("utils.c", " semget " , __LINE__);
return semid;
}
