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glibc/nptl/pthread_attr_init.c
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/* Copyright (C) 2002-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
The GNU C Library 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 2.1 of the License, or (at your option) any later version. | |
The GNU C Library 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <assert.h> | |
#include <errno.h> | |
#include <string.h> | |
#include <unistd.h> | |
#include "pthreadP.h" | |
#include <shlib-compat.h> | |
struct pthread_attr *__attr_list; | |
int __attr_list_lock = LLL_LOCK_INITIALIZER; | |
int | |
__pthread_attr_init_2_1 (pthread_attr_t *attr) | |
{ | |
struct pthread_attr *iattr; | |
/* Many elements are initialized to zero so let us do it all at | |
once. This also takes care of clearing the bytes which are not | |
internally used. */ | |
memset (attr, '\0', __SIZEOF_PTHREAD_ATTR_T); | |
assert (sizeof (*attr) >= sizeof (struct pthread_attr)); | |
iattr = (struct pthread_attr *) attr; | |
/* Default guard size specified by the standard. */ | |
iattr->guardsize = __getpagesize (); | |
return 0; | |
} | |
versioned_symbol (libpthread, __pthread_attr_init_2_1, pthread_attr_init, | |
GLIBC_2_1); | |
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) | |
int | |
__pthread_attr_init_2_0 (pthread_attr_t *attr) | |
{ | |
/* This code is specific to the old LinuxThread code which has a too | |
small pthread_attr_t definition. The struct looked like | |
this: */ | |
struct old_attr | |
{ | |
int detachstate; | |
int schedpolicy; | |
struct sched_param schedparam; | |
int inheritsched; | |
int scope; | |
}; | |
struct pthread_attr *iattr; | |
/* Many elements are initialized to zero so let us do it all at | |
once. This also takes care of clearing the bytes which are not | |
internally used. */ | |
memset (attr, '\0', sizeof (struct old_attr)); | |
iattr = (struct pthread_attr *) attr; | |
iattr->flags |= ATTR_FLAG_OLDATTR; | |
/* We cannot enqueue the attribute because that member is not in the | |
old attribute structure. */ | |
return 0; | |
} | |
compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init, | |
GLIBC_2_0); | |
#endif |