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authorRoland McGrath <roland@hack.frob.com>2014-06-12 13:48:47 -0700
committerRoland McGrath <roland@hack.frob.com>2014-06-12 13:48:47 -0700
commit463dc947b4f9bc4137c9919ee72b896403926474 (patch)
treeaaade6746cade247ea83c99c3057f6f08e1eb6a9 /sysdeps/pthread/allocalim.h
parente876b09076d859836f948691dee5a1e3b956256e (diff)
Get rid of nptl/sysdeps/pthread/ subdirectory
Diffstat (limited to 'sysdeps/pthread/allocalim.h')
-rw-r--r--sysdeps/pthread/allocalim.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/sysdeps/pthread/allocalim.h b/sysdeps/pthread/allocalim.h
new file mode 100644
index 0000000000..407d4007e7
--- /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));
+}