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/*
DeaDBeeF - ultimate music player for GNU/Linux systems with X11
Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "threading.h"
intptr_t
thread_start (void (*fn)(void *ctx), void *ctx) {
pthread_t tid;
pthread_attr_t attr;
int s = pthread_attr_init (&attr);
if (s != 0) {
fprintf (stderr, "pthread_attr_init failed: %s\n", strerror (s));
return 0;
}
s = pthread_create (&tid, &attr, (void *(*)(void *))fn, (void*)ctx);
if (s != 0) {
fprintf (stderr, "pthread_create failed: %s\n", strerror (s));
return 0;
}
s = pthread_attr_destroy (&attr);
if (s != 0) {
fprintf (stderr, "pthread_attr_destroy failed: %s\n", strerror (s));
pthread_cancel (tid);
return 0;
}
return tid;
}
intptr_t
thread_start_low_priority (void (*fn)(void *ctx), void *ctx) {
#ifdef __linux__
pthread_t tid;
pthread_attr_t attr;
int s = pthread_attr_init (&attr);
if (s != 0) {
fprintf (stderr, "pthread_attr_init failed: %s\n", strerror (s));
return 0;
}
int policy;
s = pthread_attr_getschedpolicy (&attr, &policy);
if (s != 0) {
fprintf (stderr, "pthread_attr_getschedpolicy failed: %s\n", strerror (s));
return 0;
}
int minprio = sched_get_priority_min (policy);
s = pthread_create (&tid, &attr, (void *(*)(void *))fn, (void*)ctx);
if (s != 0) {
fprintf (stderr, "pthread_create failed: %s\n", strerror (s));
return 0;
}
s = pthread_setschedprio (tid, minprio);
if (s != 0) {
fprintf (stderr, "pthread_setschedprio failed: %s\n", strerror (s));
pthread_cancel (tid);
return 0;
}
s = pthread_attr_destroy (&attr);
if (s != 0) {
fprintf (stderr, "pthread_attr_destroy failed: %s\n", strerror (s));
pthread_cancel (tid);
return 0;
}
return tid;
#else
return thread_start (fn, ctx);
#endif
}
int
thread_join (intptr_t tid) {
void *retval;
int s = pthread_join ((pthread_t)tid, &retval);
if (s) {
fprintf (stderr, "pthread_join failed: %s\n", strerror (s));
return -1;
}
return 0;
}
uintptr_t
mutex_create_nonrecursive (void) {
pthread_mutex_t *mtx = malloc (sizeof (pthread_mutex_t));
pthread_mutexattr_t attr = {0};
pthread_mutexattr_init (&attr);
pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_NORMAL);
int err = pthread_mutex_init (mtx, &attr);
if (err != 0) {
fprintf (stderr, "pthread_mutex_init failed: %s\n", strerror (err));
return 0;
}
pthread_mutexattr_destroy (&attr);
return (uintptr_t)mtx;
}
uintptr_t
mutex_create (void) {
pthread_mutex_t *mtx = malloc (sizeof (pthread_mutex_t));
pthread_mutexattr_t attr = {0};
pthread_mutexattr_init (&attr);
pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
int err = pthread_mutex_init (mtx, &attr);
if (err != 0) {
fprintf (stderr, "pthread_mutex_init failed: %s\n", strerror (err));
return 0;
}
pthread_mutexattr_destroy (&attr);
return (uintptr_t)mtx;
}
void
mutex_free (uintptr_t _mtx) {
pthread_mutex_t *mtx = (pthread_mutex_t *)_mtx;
pthread_mutex_destroy (mtx);
free (mtx);
}
int
mutex_lock (uintptr_t _mtx) {
pthread_mutex_t *mtx = (pthread_mutex_t *)_mtx;
int err = pthread_mutex_lock (mtx);
if (err != 0) {
fprintf (stderr, "pthread_mutex_lock failed: %s\n", strerror (err));
}
return err;
}
int
mutex_unlock (uintptr_t _mtx) {
pthread_mutex_t *mtx = (pthread_mutex_t *)_mtx;
int err = pthread_mutex_unlock (mtx);
if (err != 0) {
fprintf (stderr, "pthread_mutex_unlock failed: %s\n", strerror (err));
}
return err;
}
uintptr_t
cond_create (void) {
pthread_cond_t *cond = malloc (sizeof (pthread_cond_t));
int err = pthread_cond_init (cond, NULL);
if (err != 0) {
fprintf (stderr, "pthread_cond_init failed: %s\n", strerror (err));
return 0;
}
return (uintptr_t)cond;
}
void
cond_free (uintptr_t c) {
if (c) {
pthread_cond_t *cond = (pthread_cond_t *)c;
pthread_cond_destroy (cond);
free (cond);
}
}
int
cond_wait (uintptr_t c, uintptr_t m) {
pthread_cond_t *cond = (pthread_cond_t *)c;
pthread_mutex_t *mutex = (pthread_mutex_t *)m;
int err = mutex_lock (m);
if (err != 0) {
return err;
}
err = pthread_cond_wait (cond, mutex);
if (err != 0) {
fprintf (stderr, "pthread_cond_wait failed: %s\n", strerror (err));
}
return err;
}
int
cond_signal (uintptr_t c) {
pthread_cond_t *cond = (pthread_cond_t *)c;
int err = pthread_cond_signal (cond);
if (err != 0) {
fprintf (stderr, "pthread_cond_signal failed: %s\n", strerror (err));
}
return err;
}
int
cond_broadcast (uintptr_t c) {
pthread_cond_t *cond = (pthread_cond_t *)c;
int err = pthread_cond_broadcast (cond);
if (err != 0) {
fprintf (stderr, "pthread_cond_broadcast failed: %s\n", strerror (err));
}
return err;
}
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