[glibc.git] / linuxthreads / alloca_cutoff.c

/* Determine whether block of given size can be allocated on the stack or not.
   Copyright (C) 2002, 2003 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 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; 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 <alloca.h>
#include <stdlib.h>
#include <sys/param.h>
#include "internals.h"
#include <sysdep-cancel.h>

int
__libc_alloca_cutoff (size_t size)
{
  if (! SINGLE_THREAD_P)
    {
      pthread_descr self = thread_self ();
      return size <= LIBC_THREAD_GETMEM (self, p_alloca_cutoff);
    }

  return size <= __MAX_ALLOCA_CUTOFF;
}
Commit	Line	Data
270d9d47	1	/* Determine whether block of given size can be allocated on the stack or not.
2bf49a01	2	Copyright (C) 2002, 2003 Free Software Foundation, Inc.
270d9d47 UD	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public License as
	7	published by the Free Software Foundation; either version 2.1 of the
	8	License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; see the file COPYING.LIB. If not,
	17	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	18	Boston, MA 02111-1307, USA. */
	19
	20	#include <alloca.h>
	21	#include <stdlib.h>
	22	#include <sys/param.h>
2bf49a01	23	#include "internals.h"
270d9d47 UD	24	#include <sysdep-cancel.h>
	25
	26	int
	27	__libc_alloca_cutoff (size_t size)
	28	{
	29	if (! SINGLE_THREAD_P)
	30	{
	31	pthread_descr self = thread_self ();
	32	return size <= LIBC_THREAD_GETMEM (self, p_alloca_cutoff);
	33	}
	34
	35	return size <= __MAX_ALLOCA_CUTOFF;
	36	}