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(likely): New macro.

Browse source 
(unlikely): Ditto.
(NELEMS): Ditto.

(Logical change 1.39)
This commit is contained in:
mostang.com!davidm 2003-01-21 08:08:32 +00:00
parent b5fe317cc8
commit 313653f66e
1 changed files with 8 additions and 6 deletions
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14
include/internal.h
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library /* libunwind - a platform-independent unwind library
Copyright (C) 2001-2002 Hewlett-Packard Co Copyright (C) 2001-2003 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com> Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind. This file is part of libunwind.
@ -33,9 +33,13 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <libunwind.h> #include <libunwind.h>
#ifdef __GNUC__ #ifdef __GNUC__
# define HIDDEN __attribute__((visibility ("hidden"))) # define HIDDEN __attribute__((visibility ("hidden")))
# define likely(x) __builtin_expect ((x), 1)
# define unlikely(x) __builtin_expect ((x), 0)
#else #else
# define HIDDEN # define HIDDEN
# define likely(x)
# define unlikely(x)
#endif #endif
#ifdef DEBUG #ifdef DEBUG
@ -54,12 +58,10 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#else #else
# define debug(level,format...) # define debug(level,format...)
# define dprintf(format...) # define dprintf(format...)
# ifdef __GNUC__
# else
# define inline /* nothing */
# endif
#endif #endif
#define NELEMS(a) (sizeof (a) / sizeof ((a)[0]))
/* Make it easy to write thread-safe code which may or may not be /* Make it easy to write thread-safe code which may or may not be
linked against libpthread. The macros below can be used linked against libpthread. The macros below can be used
unconditionally and if -lpthread is around, they'll call the unconditionally and if -lpthread is around, they'll call the