FreeBSD-5.3/lib/libthr/thread/thr_attr.c
/*
* Copyright (c) 1995-1997 John Birrell <jb@cimlogic.com.au>.
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by John Birrell.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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 AUTHOR 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.
*
* $FreeBSD: src/lib/libthr/thread/thr_attr.c,v 1.2 2004/02/18 14:56:20 mtm Exp $
*/
/*
* Copyright (c) 2003 Craig Rodrigues <rodrigc@attbi.com>.
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Craig Rodrigues.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY CRAIG RODRIGUES 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 AUTHOR 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.
*
*/
/*
* Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>.
* Copyright (C) 2001 Jason Evans <jasone@freebsd.org>.
* Copyright (c) 2002,2003 Alexey Zelkin <phantom@FreeBSD.org>
* Copyright (c) 2003 Jeff Roberson <jeff@FreeBSD.org>
* All rights reserved.
*
* 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(s), this list of conditions and the following disclaimer
* unmodified other than the allowable addition of one or more
* copyright notices.
* 2. Redistributions in binary form must reproduce the above copyright
* notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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.
*/
/* XXXTHR I rewrote the entire file, can we lose some of the copyrights? */
#include <sys/param.h>
#include <errno.h>
#include <pthread.h>
#include <pthread_np.h>
#include <stdlib.h>
#include <string.h>
#include "thr_private.h"
__weak_reference(_pthread_attr_destroy, pthread_attr_destroy);
__weak_reference(_pthread_attr_init, pthread_attr_init);
__weak_reference(_pthread_attr_setcreatesuspend_np,
pthread_attr_setcreatesuspend_np);
__weak_reference(_pthread_attr_setdetachstate, pthread_attr_setdetachstate);
__weak_reference(_pthread_attr_setguardsize, pthread_attr_setguardsize);
__weak_reference(_pthread_attr_setinheritsched, pthread_attr_setinheritsched);
__weak_reference(_pthread_attr_setschedparam, pthread_attr_setschedparam);
__weak_reference(_pthread_attr_setschedpolicy, pthread_attr_setschedpolicy);
__weak_reference(_pthread_attr_setscope, pthread_attr_setscope);
__weak_reference(_pthread_attr_setstack, pthread_attr_setstack);
__weak_reference(_pthread_attr_setstackaddr, pthread_attr_setstackaddr);
__weak_reference(_pthread_attr_setstacksize, pthread_attr_setstacksize);
__weak_reference(_pthread_attr_get_np, pthread_attr_get_np);
__weak_reference(_pthread_attr_getdetachstate, pthread_attr_getdetachstate);
__weak_reference(_pthread_attr_getguardsize, pthread_attr_getguardsize);
__weak_reference(_pthread_attr_getinheritsched, pthread_attr_getinheritsched);
__weak_reference(_pthread_attr_getschedparam, pthread_attr_getschedparam);
__weak_reference(_pthread_attr_getschedpolicy, pthread_attr_getschedpolicy);
__weak_reference(_pthread_attr_getscope, pthread_attr_getscope);
__weak_reference(_pthread_attr_getstack, pthread_attr_getstack);
__weak_reference(_pthread_attr_getstackaddr, pthread_attr_getstackaddr);
__weak_reference(_pthread_attr_getstacksize, pthread_attr_getstacksize);
int
_pthread_attr_init(pthread_attr_t *attr)
{
pthread_attr_t pattr;
if ((pattr = (pthread_attr_t)
malloc(sizeof(struct pthread_attr))) == NULL)
return (ENOMEM);
memcpy(pattr, &pthread_attr_default, sizeof(struct pthread_attr));
*attr = pattr;
return (0);
}
int
_pthread_attr_destroy(pthread_attr_t *attr)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
free(*attr);
*attr = NULL;
return (0);
}
int
_pthread_attr_setcreatesuspend_np(pthread_attr_t *attr)
{
if (attr == NULL || *attr == NULL) {
errno = EINVAL;
return (-1);
}
(*attr)->suspend = PTHREAD_CREATE_SUSPENDED;
return (0);
}
int
_pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
{
if (attr == NULL || *attr == NULL ||
(detachstate != PTHREAD_CREATE_DETACHED &&
detachstate != PTHREAD_CREATE_JOINABLE))
return (EINVAL);
if (detachstate == PTHREAD_CREATE_DETACHED)
(*attr)->flags |= PTHREAD_DETACHED;
else
(*attr)->flags &= ~PTHREAD_DETACHED;
return (0);
}
int
_pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
(*attr)->guardsize_attr = roundup(guardsize, _pthread_page_size);
return (0);
}
int
_pthread_attr_setinheritsched(pthread_attr_t *attr, int sched_inherit)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
(*attr)->sched_inherit = sched_inherit;
return (0);
}
int
_pthread_attr_setschedparam(pthread_attr_t *attr,
const struct sched_param *param)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
if (param == NULL)
return (ENOTSUP);
if (param->sched_priority < PTHREAD_MIN_PRIORITY ||
param->sched_priority > PTHREAD_MAX_PRIORITY)
return (ENOTSUP);
(*attr)->prio = param->sched_priority;
return (0);
}
int
_pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
if (policy < SCHED_FIFO || policy > SCHED_RR)
return (ENOTSUP);
(*attr)->sched_policy = policy;
return (0);
}
int
_pthread_attr_setscope(pthread_attr_t *attr, int contentionscope)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
if (contentionscope != PTHREAD_SCOPE_PROCESS ||
contentionscope == PTHREAD_SCOPE_SYSTEM)
/* We don't support PTHREAD_SCOPE_SYSTEM. */
return (ENOTSUP);
(*attr)->flags |= contentionscope;
return (0);
}
int
_pthread_attr_setstack(pthread_attr_t *attr, void *stackaddr,
size_t stacksize)
{
if (attr == NULL || *attr == NULL || stackaddr == NULL
|| stacksize < PTHREAD_STACK_MIN)
return (EINVAL);
(*attr)->stackaddr_attr = stackaddr;
(*attr)->stacksize_attr = stacksize;
return (0);
}
int
_pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr)
{
if (attr == NULL || *attr == NULL || stackaddr == NULL)
return (EINVAL);
(*attr)->stackaddr_attr = stackaddr;
return (0);
}
int
_pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
{
if (attr == NULL || *attr == NULL || stacksize < PTHREAD_STACK_MIN)
return (EINVAL);
(*attr)->stacksize_attr = stacksize;
return (0);
}
int
_pthread_attr_get_np(pthread_t pid, pthread_attr_t *dst)
{
int ret;
if (pid == NULL || dst == NULL || *dst == NULL)
return (EINVAL);
if ((ret = _find_thread(pid)) != 0)
return (ret);
memcpy(*dst, &pid->attr, sizeof(struct pthread_attr));
/*
* Special case, if stack address was not provided by caller
* of pthread_create(), then return address allocated internally
*/
if ((*dst)->stackaddr_attr == NULL)
(*dst)->stackaddr_attr = pid->stack;
return (0);
}
int
_pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate)
{
if (attr == NULL || *attr == NULL || detachstate == NULL)
return (EINVAL);
/* Check if the detached flag is set: */
if ((*attr)->flags & PTHREAD_DETACHED)
*detachstate = PTHREAD_CREATE_DETACHED;
else
*detachstate = PTHREAD_CREATE_JOINABLE;
return (0);
}
int
_pthread_attr_getguardsize(const pthread_attr_t *attr, size_t *guardsize)
{
if (attr == NULL || *attr == NULL || guardsize == NULL)
return (EINVAL);
*guardsize = (*attr)->guardsize_attr;
return (0);
}
int
_pthread_attr_getinheritsched(const pthread_attr_t *attr, int *sched_inherit)
{
if (attr == NULL || *attr == NULL)
return (EINVAL);
*sched_inherit = (*attr)->sched_inherit;
return (0);
}
int
_pthread_attr_getschedparam(const pthread_attr_t *attr, struct sched_param *param)
{
if (attr == NULL || *attr == NULL || param == NULL)
return (EINVAL);
param->sched_priority = (*attr)->prio;
return (0);
}
int
_pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy)
{
if (attr == NULL || *attr == NULL || policy == NULL)
return (EINVAL);
*policy = (*attr)->sched_policy;
return (0);
}
int
_pthread_attr_getscope(const pthread_attr_t *attr, int *contentionscope)
{
if (attr == NULL || *attr == NULL || contentionscope == NULL)
return (EINVAL);
*contentionscope = (*attr)->flags & PTHREAD_SCOPE_SYSTEM ?
PTHREAD_SCOPE_SYSTEM : PTHREAD_SCOPE_PROCESS;
return (0);
}
int
_pthread_attr_getstack(const pthread_attr_t * __restrict attr,
void ** __restrict stackaddr,
size_t * __restrict stacksize)
{
if (attr == NULL || *attr == NULL || stackaddr == NULL
|| stacksize == NULL)
return (EINVAL);
*stackaddr = (*attr)->stackaddr_attr;
*stacksize = (*attr)->stacksize_attr;
return (0);
}
int
_pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr)
{
if (attr == NULL || *attr == NULL || stackaddr == NULL)
return (EINVAL);
*stackaddr = (*attr)->stackaddr_attr;
return (0);
}
int
_pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize)
{
if (attr == NULL || *attr == NULL || stacksize == NULL)
return (EINVAL);
*stacksize = (*attr)->stacksize_attr;
return (0);
}