/*
* Client routine -- multiple copies will request server.
*/
void *client_routine (void *arg)
{
int my_number = (int)arg, loops;
char prompt[32];
char string[128], formatted[128];
int status;
sprintf (prompt, "Client %d> ", my_number);
while (1) {
tty_server_request (REQ_READ, 1, prompt, string);
if (strlen (string) == 0)
break;
for (loops = 0; loops < 4; loops++) {
sprintf (
formatted, "(%d#%d) %s", my_number, loops, string);
tty_server_request (REQ_WRITE, 0, NULL, formatted);
sleep (1);
}
}
status = pthread_mutex_lock (&client_mutex);
if (status != 0)
err_abort (status, "Lock client mutex");
client_threads--;
if (client_threads <= 0) {
status = pthread_cond_signal (&clients_done);
if (status != 0)
err_abort (status, "Signal clients done");
}
status = pthread_mutex_unlock (&client_mutex);
if (status != 0)
err_abort (status, "Unlock client mutex");
return NULL;
}
void *client_routine(void *args)
{
int id = (int)args, i, status;
char prompt[PROMPT_MAX];
char text[TEXT_MAX], formatted[TEXT_MAX];
sprintf(prompt, "Client %d>\n", id);
tty_server_request(REQ_READ, 1, prompt, text);
for (i = 0; i < 4; ++i) {
if (strlen(text) == 0) {
break;
}
sprintf(formatted, "(%d#%d) %s\n", id, i, text);
tty_server_request(REQ_WRITE, 0, NULL, formatted);
sleep(1);
}
status = pthread_mutex_lock(&client_mutex);
if (status != 0) {
err_abort(status, "Lock client mutex");
}
client_thread--;
status = pthread_cond_signal(&client_cond);
if (status != 0) {
err_abort(status, "Signal client thread quit");
}
status = pthread_mutex_unlock(&client_mutex);
if (status != 0) {
err_abort(status, "Unlock client mutex");
}
return NULL;
}
int main (int argc, char *argv[])
{
pthread_t thread;
int count;
int status;
#ifdef sun
/*
* On Solaris 2.5, threads are not timesliced. To ensure
* that our threads can run concurrently, we need to
* increase the concurrency level to CLIENT_THREADS.
*/
DPRINTF (("Setting concurrency level to %d\n", CLIENT_THREADS));
thr_setconcurrency (CLIENT_THREADS);
#endif
/*
* Create CLIENT_THREADS clients.
*/
client_threads = CLIENT_THREADS;
for (count = 0; count < CLIENT_THREADS; count++) {
status = pthread_create (&thread, NULL,
client_routine, (void*)count);
if (status != 0)
err_abort (status, "Create client thread");
}
status = pthread_mutex_lock (&client_mutex);
if (status != 0)
err_abort (status, "Lock client mutex");
while (client_threads > 0) {
status = pthread_cond_wait (&clients_done, &client_mutex);
if (status != 0)
err_abort (status, "Wait for clients to finish");
}
status = pthread_mutex_unlock (&client_mutex);
if (status != 0)
err_abort (status, "Unlock client mutex");
printf ("All clients done\n");
tty_server_request (REQ_QUIT, 1, NULL, NULL);
return 0;
}
int main()
{
int status, i;
pthread_t thread;
// create client thread
client_thread = CLIENT_NUMBER;
for (i = 0; i < client_thread; ++i) {
status = pthread_create(&thread, NULL, client_routine, (void *)i);
if (status != 0) {
err_abort(status, "Create client thread");
}
}
// wait client thread quit
status = pthread_mutex_lock(&client_mutex);
if (status != 0) {
err_abort(status, "Lock client mutex");
}
while (client_thread > 0) {
status = pthread_cond_wait(&client_cond, &client_mutex);
if (status != 0) {
err_abort(status, "Wait client condition");
}
}
status = pthread_mutex_unlock(&client_mutex);
if (status != 0) {
err_abort(status, "Unlock client mutex");
}
printf("All client thread quit\n");
// quit server thread
tty_server_request(REQ_QUIT, 1, NULL, NULL);
return 0;
}