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/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulsecore/thread.h>
#include <pulsecore/mutex.h>
#include <pulsecore/log.h>
#include <pulsecore/core-util.h>
#include <pulse/xmalloc.h>
static pa_mutex *mutex = NULL;
static pa_cond *cond1 = NULL, *cond2 = NULL;
static pa_tls *tls = NULL;
static int magic_number = 0;
#define THREADS_MAX 20
static void thread_func(void *data) {
pa_tls_set(tls, data);
pa_log("thread_func() for %s starting...", (char*) pa_tls_get(tls));
pa_mutex_lock(mutex);
for (;;) {
int k, n;
pa_log("%s waiting ...", (char*) pa_tls_get(tls));
for (;;) {
if (magic_number < 0)
goto quit;
if (magic_number != 0)
break;
pa_cond_wait(cond1, mutex);
}
k = magic_number;
magic_number = 0;
pa_mutex_unlock(mutex);
pa_cond_signal(cond2, 0);
pa_log("%s got number %i", (char*) pa_tls_get(tls), k);
/* Spin! */
for (n = 0; n < k; n++)
pa_thread_yield();
pa_mutex_lock(mutex);
}
quit:
pa_mutex_unlock(mutex);
pa_log("thread_func() for %s done...", (char*) pa_tls_get(tls));
}
int main(int argc, char *argv[]) {
int i, k;
pa_thread* t[THREADS_MAX];
assert(pa_thread_is_running(pa_thread_self()));
mutex = pa_mutex_new(0);
cond1 = pa_cond_new();
cond2 = pa_cond_new();
tls = pa_tls_new(pa_xfree);
for (i = 0; i < THREADS_MAX; i++) {
t[i] = pa_thread_new(thread_func, pa_sprintf_malloc("Thread #%i", i+1));
assert(t[i]);
}
pa_mutex_lock(mutex);
pa_log("loop-init");
for (k = 0; k < 100; k++) {
assert(magic_number == 0);
magic_number = (int) rand() % 0x10000;
pa_log("iteration %i (%i)", k, magic_number);
pa_cond_signal(cond1, 0);
pa_cond_wait(cond2, mutex);
}
pa_log("loop-exit");
magic_number = -1;
pa_cond_signal(cond1, 1);
pa_mutex_unlock(mutex);
for (i = 0; i < THREADS_MAX; i++)
pa_thread_free(t[i]);
pa_mutex_free(mutex);
pa_cond_free(cond1);
pa_cond_free(cond2);
pa_tls_free(tls);
return 0;
}
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