mirror of git://gcc.gnu.org/git/gcc.git
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* Increase stack size limit if possible.
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Copyright (C) 2011-2018 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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#include "ansidecl.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 ATTRIBUTE_UNUSED)
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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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