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-rw-r--r--source3/include/debug.h27
1 files changed, 21 insertions, 6 deletions
diff --git a/source3/include/debug.h b/source3/include/debug.h
index 46e5620cc7..41d1c82366 100644
--- a/source3/include/debug.h
+++ b/source3/include/debug.h
@@ -161,9 +161,24 @@ extern bool *DEBUGLEVEL_CLASS_ISSET;
* will remove the extra conditional test.
*/
+/*
+ * From talloc.c:
+ */
+
+/* these macros gain us a few percent of speed on gcc */
+#if (__GNUC__ >= 3)
+/* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
+ as its first argument */
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+#define likely(x) x
+#define unlikely(x) x
+#endif
+
#define DEBUGLVL( level ) \
( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ DBGC_CLASS ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& dbghdr( level, DBGC_CLASS, __FILE__, FUNCTION_MACRO, (__LINE__) ) )
@@ -171,7 +186,7 @@ extern bool *DEBUGLEVEL_CLASS_ISSET;
#define DEBUGLVLC( dbgc_class, level ) \
( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ dbgc_class ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& dbghdr( level, DBGC_CLASS, __FILE__, FUNCTION_MACRO, (__LINE__) ) )
@@ -179,7 +194,7 @@ extern bool *DEBUGLEVEL_CLASS_ISSET;
#define DEBUG( level, body ) \
(void)( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ DBGC_CLASS ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& (dbghdr( level, DBGC_CLASS, __FILE__, FUNCTION_MACRO, (__LINE__) )) \
@@ -187,7 +202,7 @@ extern bool *DEBUGLEVEL_CLASS_ISSET;
#define DEBUGC( dbgc_class, level, body ) \
(void)( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ dbgc_class ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& (dbghdr( level, DBGC_CLASS, __FILE__, FUNCTION_MACRO, (__LINE__) )) \
@@ -195,14 +210,14 @@ extern bool *DEBUGLEVEL_CLASS_ISSET;
#define DEBUGADD( level, body ) \
(void)( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ DBGC_CLASS ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ DBGC_CLASS ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& (dbgtext body) )
#define DEBUGADDC( dbgc_class, level, body ) \
(void)( ((level) <= MAX_DEBUG_LEVEL) && \
- ((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
+ unlikely((DEBUGLEVEL_CLASS[ dbgc_class ] >= (level))|| \
(!DEBUGLEVEL_CLASS_ISSET[ dbgc_class ] && \
DEBUGLEVEL_CLASS[ DBGC_ALL ] >= (level)) ) \
&& (dbgtext body) )