171 lines
4.1 KiB
C
171 lines
4.1 KiB
C
/* $NetBSD: pthread_misc.c,v 1.15 2013/03/21 16:49:12 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Nathan J. Williams.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: pthread_misc.c,v 1.15 2013/03/21 16:49:12 christos Exp $");
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/pset.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <lwp.h>
|
|
#include <sched.h>
|
|
|
|
#include "pthread.h"
|
|
#include "pthread_int.h"
|
|
#include "reentrant.h"
|
|
|
|
int pthread__sched_yield(void);
|
|
|
|
int _sys___sigprocmask14(int, const sigset_t *, sigset_t *);
|
|
int _sys_sched_yield(void);
|
|
|
|
__strong_alias(__libc_thr_sigsetmask,pthread_sigmask)
|
|
__strong_alias(__sigprocmask14,pthread_sigmask)
|
|
__strong_alias(__libc_thr_yield,pthread__sched_yield)
|
|
|
|
int
|
|
pthread_getschedparam(pthread_t thread, int *policy, struct sched_param *param)
|
|
{
|
|
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
|
|
if (_sched_getparam(getpid(), thread->pt_lid, policy, param) < 0)
|
|
return errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_setschedparam(pthread_t thread, int policy,
|
|
const struct sched_param *param)
|
|
{
|
|
struct sched_param sp;
|
|
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
|
|
memcpy(&sp, param, sizeof(struct sched_param));
|
|
if (_sched_setparam(getpid(), thread->pt_lid, policy, &sp) < 0)
|
|
return errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_getaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset)
|
|
{
|
|
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
|
|
if (_sched_getaffinity(getpid(), thread->pt_lid, size, cpuset) < 0)
|
|
return errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_setaffinity_np(pthread_t thread, size_t size, cpuset_t *cpuset)
|
|
{
|
|
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
|
|
if (_sched_setaffinity(getpid(), thread->pt_lid, size, cpuset) < 0)
|
|
return errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_setschedprio(pthread_t thread, int prio)
|
|
{
|
|
struct sched_param sp;
|
|
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
|
|
sp.sched_priority = prio;
|
|
if (_sched_setparam(getpid(), thread->pt_lid, SCHED_NONE, &sp) < 0)
|
|
return errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_kill(pthread_t thread, int sig)
|
|
{
|
|
|
|
if ((sig < 0) || (sig >= _NSIG))
|
|
return EINVAL;
|
|
if (pthread__find(thread) != 0)
|
|
return ESRCH;
|
|
if (_lwp_kill(thread->pt_lid, sig))
|
|
return errno;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread_sigmask(int how, const sigset_t *set, sigset_t *oset)
|
|
{
|
|
if (_sys___sigprocmask14(how, set, oset))
|
|
return errno;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pthread__sched_yield(void)
|
|
{
|
|
pthread_t self;
|
|
int error;
|
|
|
|
if (__predict_false(__uselibcstub))
|
|
return __libc_thr_yield();
|
|
|
|
self = pthread__self();
|
|
|
|
/* Memory barrier for unlocked mutex release. */
|
|
membar_producer();
|
|
self->pt_blocking++;
|
|
error = _sys_sched_yield();
|
|
self->pt_blocking--;
|
|
membar_sync();
|
|
|
|
return error;
|
|
}
|