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Diffstat (limited to 'sysdeps/pthread/allocalim.h')
-rw-r--r-- | sysdeps/pthread/allocalim.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sysdeps/pthread/allocalim.h b/sysdeps/pthread/allocalim.h new file mode 100644 index 0000000..407d400 --- /dev/null +++ b/sysdeps/pthread/allocalim.h @@ -0,0 +1,29 @@ +/* Determine whether block of given size can be allocated on the stack or not. + Copyright (C) 2002-2014 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, see <http://www.gnu.org/licenses/>. */ + +#include <alloca.h> +#include <limits.h> + + +extern __always_inline +int +__libc_use_alloca (size_t size) +{ + return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1) + || __builtin_expect (__libc_alloca_cutoff (size), 1)); +} |