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author | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
commit | a334319f6530564d22e775935d9c91663623a1b4 (patch) | |
tree | b5877475619e4c938e98757d518bb1e9cbead751 /linuxthreads/alloca_cutoff.c | |
parent | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff) | |
download | glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.xz glibc-a334319f6530564d22e775935d9c91663623a1b4.zip |
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'linuxthreads/alloca_cutoff.c')
-rw-r--r-- | linuxthreads/alloca_cutoff.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/linuxthreads/alloca_cutoff.c b/linuxthreads/alloca_cutoff.c new file mode 100644 index 0000000000..ca064b3bb6 --- /dev/null +++ b/linuxthreads/alloca_cutoff.c @@ -0,0 +1,36 @@ +/* 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, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#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; +} |