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/*
* pthread_attr_getstacksize.c
*
* Description:
* This translation unit implements operations on thread attribute objects.
*
* --------------------------------------------------------------------------
*
* Pthreads4w - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999-2018, Pthreads4w contributors
*
* Homepage: https://sourceforge.net/projects/pthreads4w/
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* https://sourceforge.net/p/pthreads4w/wiki/Contributors/
*
* This file is part of Pthreads4w.
*
* Pthreads4w 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 3 of the License, or
* (at your option) any later version.
*
* Pthreads4w 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 Pthreads4w. If not, see <http://www.gnu.org/licenses/>. *
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pthread.h"
#include "implement.h"
/* ignore warning "unreferenced formal parameter" */
#if defined(_MSC_VER)
#pragma warning( disable : 4100 )
#endif
int
pthread_attr_getstacksize (const pthread_attr_t * attr, size_t * stacksize)
/*
* ------------------------------------------------------
* DOCPUBLIC
* This function determines the size of the stack on
* which threads created with 'attr' will run.
*
* PARAMETERS
* attr
* pointer to an instance of pthread_attr_t
*
* stacksize
* pointer to size_t into which is returned the
* stack size, in bytes.
*
*
* DESCRIPTION
* This function determines the size of the stack on
* which threads created with 'attr' will run.
*
* NOTES:
* 1) Function supported only if this macro is
* defined:
*
* _POSIX_THREAD_ATTR_STACKSIZE
*
* 2) Use on newly created attributes object to
* find the default stack size.
*
* RESULTS
* 0 successfully retrieved stack size,
* EINVAL 'attr' is invalid
* ENOSYS function not supported
*
* ------------------------------------------------------
*/
{
#if defined(_POSIX_THREAD_ATTR_STACKSIZE) && _POSIX_THREAD_ATTR_STACKSIZE != -1
if (ptw32_is_attr (attr) != 0)
{
return EINVAL;
}
/* Everything is okay. */
*stacksize = (*attr)->stacksize;
return 0;
#else
return ENOSYS;
#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
}
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