| 1 | /* Increase stack size limit if possible. |
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| 2 | Copyright (C) 2011-2024 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of the libiberty library. This library is free |
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| 5 | software; you can redistribute it and/or modify it under the |
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| 6 | terms of the GNU General Public License as published by the |
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| 7 | Free Software Foundation; either version 2, or (at your option) |
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| 8 | any later version. |
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| 9 | |
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| 10 | This library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | GNU General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with GNU CC; see the file COPYING. If not, write to |
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| 17 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
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| 18 | Boston, MA 02110-1301, USA. |
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| 19 | |
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| 20 | As a special exception, if you link this library with files |
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| 21 | compiled with a GNU compiler to produce an executable, this does not cause |
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| 22 | the resulting executable to be covered by the GNU General Public License. |
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| 23 | This exception does not however invalidate any other reasons why |
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| 24 | the executable file might be covered by the GNU General Public License. */ |
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| 25 | |
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| 26 | /* |
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| 27 | |
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| 28 | @deftypefn Extension void stack_limit_increase (unsigned long @var{pref}) |
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| 29 | |
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| 30 | Attempt to increase stack size limit to @var{pref} bytes if possible. |
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| 31 | |
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| 32 | @end deftypefn |
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| 33 | |
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| 34 | */ |
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| 35 | |
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| 36 | #include "config.h" |
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| 37 | #include "ansidecl.h" |
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| 38 | |
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| 39 | #ifdef HAVE_STDINT_H |
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| 40 | #include <stdint.h> |
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| 41 | #endif |
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| 42 | #ifdef HAVE_SYS_RESOURCE_H |
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| 43 | #include <sys/resource.h> |
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| 44 | #endif |
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| 45 | |
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| 46 | void |
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| 47 | stack_limit_increase (unsigned long pref ATTRIBUTE_UNUSED) |
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| 48 | { |
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| 49 | #if defined(HAVE_SETRLIMIT) && defined(HAVE_GETRLIMIT) \ |
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| 50 | && defined(RLIMIT_STACK) && defined(RLIM_INFINITY) |
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| 51 | struct rlimit rlim; |
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| 52 | if (getrlimit (RLIMIT_STACK, rlimits: &rlim) == 0 |
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| 53 | && rlim.rlim_cur != RLIM_INFINITY |
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| 54 | && rlim.rlim_cur < pref |
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| 55 | && (rlim.rlim_max == RLIM_INFINITY || rlim.rlim_cur < rlim.rlim_max)) |
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| 56 | { |
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| 57 | rlim.rlim_cur = pref; |
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| 58 | if (rlim.rlim_max != RLIM_INFINITY && rlim.rlim_cur > rlim.rlim_max) |
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| 59 | rlim.rlim_cur = rlim.rlim_max; |
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| 60 | setrlimit (RLIMIT_STACK, rlimits: &rlim); |
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| 61 | } |
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| 62 | #endif |
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| 63 | } |
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| 64 | |
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