| /* Increase stack size limit if possible. |
| Copyright (C) 2011-2024 Free Software Foundation, Inc. |
| |
| This file is part of the libiberty library. This library 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 2, or (at your option) |
| any later version. |
| |
| This 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| |
| As a special exception, if you link this library with files |
| compiled with a GNU compiler to produce an executable, this does not cause |
| the resulting executable to be covered by the GNU General Public License. |
| This exception does not however invalidate any other reasons why |
| the executable file might be covered by the GNU General Public License. */ |
| |
| /* |
| |
| @deftypefn Extension void stack_limit_increase (unsigned long @var{pref}) |
| |
| Attempt to increase stack size limit to @var{pref} bytes if possible. |
| |
| @end deftypefn |
| |
| */ |
| |
| #include "config.h" |
| #include "ansidecl.h" |
| |
| #ifdef HAVE_STDINT_H |
| #include <stdint.h> |
| #endif |
| #ifdef HAVE_SYS_RESOURCE_H |
| #include <sys/resource.h> |
| #endif |
| |
| void |
| stack_limit_increase (unsigned long pref ATTRIBUTE_UNUSED) |
| { |
| #if defined(HAVE_SETRLIMIT) && defined(HAVE_GETRLIMIT) \ |
| && defined(RLIMIT_STACK) && defined(RLIM_INFINITY) |
| struct rlimit rlim; |
| if (getrlimit (RLIMIT_STACK, &rlim) == 0 |
| && rlim.rlim_cur != RLIM_INFINITY |
| && rlim.rlim_cur < pref |
| && (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_cur < rlim.rlim_max)) |
| { |
| rlim.rlim_cur = pref; |
| if (rlim.rlim_max != RLIM_INFINITY && rlim.rlim_cur > rlim.rlim_max) |
| rlim.rlim_cur = rlim.rlim_max; |
| setrlimit (RLIMIT_STACK, &rlim); |
| } |
| #endif |
| } |