diff options
Diffstat (limited to 'libpthread/linuxthreads/alloca_cutoff.c')
-rw-r--r-- | libpthread/linuxthreads/alloca_cutoff.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/alloca_cutoff.c b/libpthread/linuxthreads/alloca_cutoff.c new file mode 100644 index 000000000..9fe13a39d --- /dev/null +++ b/libpthread/linuxthreads/alloca_cutoff.c @@ -0,0 +1,35 @@ +/* Determine whether block of given size can be allocated on the stack or not. + Copyright (C) 2002, 2003 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 <stdlib.h> +#include <sys/param.h> +#include "internals.h" +#include <sysdep-cancel.h> + +int +__libc_alloca_cutoff (size_t size) +{ + if (! SINGLE_THREAD_P) + { + pthread_descr self = thread_self (); + return size <= LIBC_THREAD_GETMEM (self, p_alloca_cutoff); + } + + return size <= __MAX_ALLOCA_CUTOFF; +} |