pt-attr-setstacksize.c

GNU Hurd 源代码

/* pthread_attr_setstacksize.  Generic version.
   Copyright (C) 2002 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library 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.

   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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <pthread.h>
#include <pt-internal.h>

int
pthread_attr_setstacksize (pthread_attr_t *attr,
			   size_t stacksize)
{
  if (stacksize == __pthread_default_attr.stacksize)
    {
      attr->stacksize = stacksize;

      /* The guard size cannot be larger than the stack itself, as
	 such, if the new stack size is smaller than the guard size,
	 we squash the guard size.  */
      if (attr->guardsize > attr->stacksize)
	attr->guardsize = attr->stacksize;

      return 0;
    }

  return ENOTSUP;
}