From: Stefan Metzmacher <metze@samba.org>
Date: Fri, 11 Nov 2022 14:05:53 +0000 (+0100)
Subject: tevent: add TEVENT_DEBUG() avoid argument overhead when log is not active...
X-Git-Tag: tevent-0.15.0~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=812313f1c82d3679bf5f5e22bb2b0268e9bbb152;p=thirdparty%2Fsamba.git

tevent: add TEVENT_DEBUG() avoid argument overhead when log is not active...

It can be very costly to calculate the arguments passed to
tevent_debug(), just to drop the message within tevent_debug()
or the callback function.

So we add a way to avoid the overhead, it will be used in the
next commits.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
---

diff --git a/lib/tevent/tevent_internal.h b/lib/tevent/tevent_internal.h
index 4fdaa6586e6..7bb9bd67de9 100644
--- a/lib/tevent/tevent_internal.h
+++ b/lib/tevent/tevent_internal.h
@@ -296,6 +296,13 @@ struct tevent_debug_ops {
 
 void tevent_debug(struct tevent_context *ev, enum tevent_debug_level level,
 		  const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
+#define TEVENT_DEBUG(__ev, __level, __fmt, ...) do { \
+	if (unlikely((__ev) != NULL && \
+		     (__level) <= (__ev)->debug_ops.max_level)) \
+	{ \
+		tevent_debug((__ev), (__level), (__fmt), __VA_ARGS__); \
+	} \
+} while(0)
 
 void tevent_abort(struct tevent_context *ev, const char *reason);