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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libiberty/] [stack-limit.c] - Blame information for rev 848

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1 736 jeremybenn
/* Increase stack size limit if possible.
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   Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the libiberty library.  This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING.  If not, write to
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the Free Software Foundation, 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/*
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@deftypefn Extension void stack_limit_increase (unsigned long @var{pref})
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Attempt to increase stack size limit to @var{pref} bytes if possible.
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@end deftypefn
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*/
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#include "config.h"
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif
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void
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stack_limit_increase (unsigned long pref)
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{
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#if defined(HAVE_SETRLIMIT) && defined(HAVE_GETRLIMIT) \
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    && defined(RLIMIT_STACK) && defined(RLIM_INFINITY)
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  struct rlimit rlim;
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  if (getrlimit (RLIMIT_STACK, &rlim) == 0
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      && rlim.rlim_cur != RLIM_INFINITY
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      && rlim.rlim_cur < pref
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      && (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_cur < rlim.rlim_max))
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    {
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      rlim.rlim_cur = pref;
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      if (rlim.rlim_max != RLIM_INFINITY && rlim.rlim_cur > rlim.rlim_max)
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        rlim.rlim_cur = rlim.rlim_max;
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      setrlimit (RLIMIT_STACK, &rlim);
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    }
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#endif
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}

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