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/* Linuxthreads - a simple clone()-based implementation of Posix */
/* threads for Linux. */
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU Library 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 Library General Public License for more details. */
/* changed for uClibc */
#define __sched_get_priority_min sched_get_priority_min
#define __sched_get_priority_max sched_get_priority_max
/* Handling of thread attributes */
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include "pthread.h"
#include "internals.h"
libpthread_hidden_proto(pthread_attr_destroy)
libpthread_hidden_proto(pthread_attr_init)
libpthread_hidden_proto(pthread_attr_getdetachstate)
libpthread_hidden_proto(pthread_attr_setdetachstate)
libpthread_hidden_proto(pthread_attr_getinheritsched)
libpthread_hidden_proto(pthread_attr_setinheritsched)
libpthread_hidden_proto(pthread_attr_setschedparam)
libpthread_hidden_proto(pthread_attr_getschedparam)
libpthread_hidden_proto(pthread_attr_getschedpolicy)
libpthread_hidden_proto(pthread_attr_setschedpolicy)
libpthread_hidden_proto(pthread_attr_getscope)
libpthread_hidden_proto(pthread_attr_setscope)
/* NOTE: With uClibc I don't think we need this versioning stuff.
* Therefore, define the function pthread_attr_init() here using
* a strong symbol. */
//int __pthread_attr_init_2_1(pthread_attr_t *attr)
int pthread_attr_init(pthread_attr_t *attr)
{
size_t ps = getpagesize ();
attr->__detachstate = PTHREAD_CREATE_JOINABLE;
attr->__schedpolicy = SCHED_OTHER;
attr->__schedparam.sched_priority = 0;
attr->__inheritsched = PTHREAD_EXPLICIT_SCHED;
attr->__scope = PTHREAD_SCOPE_SYSTEM;
attr->__guardsize = ps;
attr->__stackaddr = NULL;
attr->__stackaddr_set = 0;
attr->__stacksize = STACK_SIZE - ps;
return 0;
}
libpthread_hidden_def(pthread_attr_init)
/* uClibc: leave out this for now. */
#if defined DO_PTHREAD_VERSIONING_WITH_UCLIBC
#if defined __PIC__ && defined DO_VERSIONING
default_symbol_version (__pthread_attr_init_2_1, pthread_attr_init, GLIBC_2.1);
int __pthread_attr_init_2_0(pthread_attr_t *attr)
{
attr->__detachstate = PTHREAD_CREATE_JOINABLE;
attr->__schedpolicy = SCHED_OTHER;
attr->__schedparam.sched_priority = 0;
attr->__inheritsched = PTHREAD_EXPLICIT_SCHED;
attr->__scope = PTHREAD_SCOPE_SYSTEM;
return 0;
}
symbol_version (__pthread_attr_init_2_0, pthread_attr_init, GLIBC_2.0);
#else
strong_alias (__pthread_attr_init_2_1, pthread_attr_init)
#endif
#endif /* DO_PTHREAD_VERSIONING_WITH_UCLIBC */
int pthread_attr_destroy(pthread_attr_t *attr attribute_unused)
{
return 0;
}
libpthread_hidden_def(pthread_attr_destroy)
int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
{
if (detachstate < PTHREAD_CREATE_JOINABLE ||
detachstate > PTHREAD_CREATE_DETACHED)
return EINVAL;
attr->__detachstate = detachstate;
return 0;
}
libpthread_hidden_def(pthread_attr_setdetachstate)
int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate)
{
*detachstate = attr->__detachstate;
return 0;
}
libpthread_hidden_def(pthread_attr_getdetachstate)
int pthread_attr_setschedparam(pthread_attr_t *attr,
const struct sched_param *param)
{
int max_prio = __sched_get_priority_max(attr->__schedpolicy);
int min_prio = __sched_get_priority_min(attr->__schedpolicy);
if (param->sched_priority < min_prio || param->sched_priority > max_prio)
return EINVAL;
memcpy (&attr->__schedparam, param, sizeof (struct sched_param));
return 0;
}
libpthread_hidden_def(pthread_attr_setschedparam)
int pthread_attr_getschedparam(const pthread_attr_t *attr,
struct sched_param *param)
{
memcpy (param, &attr->__schedparam, sizeof (struct sched_param));
return 0;
}
libpthread_hidden_def(pthread_attr_getschedparam)
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
{
if (policy != SCHED_OTHER && policy != SCHED_FIFO && policy != SCHED_RR)
return EINVAL;
attr->__schedpolicy = policy;
return 0;
}
libpthread_hidden_def(pthread_attr_setschedpolicy)
int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy)
{
*policy = attr->__schedpolicy;
return 0;
}
libpthread_hidden_def(pthread_attr_getschedpolicy)
int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit)
{
if (inherit != PTHREAD_INHERIT_SCHED && inherit != PTHREAD_EXPLICIT_SCHED)
return EINVAL;
attr->__inheritsched = inherit;
return 0;
}
libpthread_hidden_def(pthread_attr_setinheritsched)
int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit)
{
*inherit = attr->__inheritsched;
return 0;
}
libpthread_hidden_def(pthread_attr_getinheritsched)
int pthread_attr_setscope(pthread_attr_t *attr, int scope)
{
switch (scope) {
case PTHREAD_SCOPE_SYSTEM:
attr->__scope = scope;
return 0;
case PTHREAD_SCOPE_PROCESS:
return ENOTSUP;
default:
return EINVAL;
}
}
libpthread_hidden_def(pthread_attr_setscope)
int pthread_attr_getscope(const pthread_attr_t *attr, int *scope)
{
*scope = attr->__scope;
return 0;
}
libpthread_hidden_def(pthread_attr_getscope)
int __pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize)
{
size_t ps = getpagesize ();
/* First round up the guard size. */
guardsize = roundup (guardsize, ps);
/* The guard size must not be larger than the stack itself */
if (guardsize >= attr->__stacksize) return EINVAL;
attr->__guardsize = guardsize;
return 0;
}
weak_alias (__pthread_attr_setguardsize, pthread_attr_setguardsize)
int __pthread_attr_getguardsize(const pthread_attr_t *attr, size_t *guardsize)
{
*guardsize = attr->__guardsize;
return 0;
}
weak_alias (__pthread_attr_getguardsize, pthread_attr_getguardsize)
#if 0 /* uClibc: deprecated stuff disabled */
int __pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr)
{
attr->__stackaddr = stackaddr;
attr->__stackaddr_set = 1;
return 0;
}
weak_alias (__pthread_attr_setstackaddr, pthread_attr_setstackaddr)
int __pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr)
{
/* XXX This function has a stupid definition. The standard specifies
no error value but what is if no stack address was set? We simply
return the value we have in the member. */
*stackaddr = attr->__stackaddr;
return 0;
}
weak_alias (__pthread_attr_getstackaddr, pthread_attr_getstackaddr)
#endif
int __pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
{
/* We don't accept value smaller than PTHREAD_STACK_MIN. */
if (stacksize < PTHREAD_STACK_MIN)
return EINVAL;
attr->__stacksize = stacksize;
return 0;
}
weak_alias (__pthread_attr_setstacksize, pthread_attr_setstacksize)
int __pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize)
{
*stacksize = attr->__stacksize;
return 0;
}
weak_alias (__pthread_attr_getstacksize, pthread_attr_getstacksize)
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