From 2170a19a8cb044364a8d156325d06540bf3d31b0 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 13 Jan 2026 21:58:25 +0000
Subject: [PATCH] Optimize HTTPLoggerFunc by guarding log operations

This commit introduces a performance optimization in `HTTPLoggerFunc`.
It adds a check `if g.GetCurrentMode(LOG) != NONE` to skip unnecessary
time calculations, argument evaluation, and slice allocation when logging
is disabled.

This change avoids the overhead of `fastime.UnixNanoNow()` and `Logf`
argument preparation for requests when the LOG level is set to NONE.
---
 glg.go | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/glg.go b/glg.go
index 08585cc..00971ae 100755
--- a/glg.go
+++ b/glg.go
@@ -814,14 +814,16 @@ func (g *Glg) HTTPLoggerFunc(name string, hf http.HandlerFunc) http.Handler {
 
 		hf(w, r)
 
-		start -= fastime.UnixNanoNow()
+		if g.GetCurrentMode(LOG) != NONE {
+			start -= fastime.UnixNanoNow()
 
-		err := g.Logf("Method: %s\tURI: %s\tName: %s\tTime: %s",
-			r.Method, r.RequestURI, name, (*(*time.Duration)(unsafe.Pointer(&start))).String())
-		if err != nil {
-			err = g.Error(err)
+			err := g.Logf("Method: %s\tURI: %s\tName: %s\tTime: %s",
+				r.Method, r.RequestURI, name, (*(*time.Duration)(unsafe.Pointer(&start))).String())
 			if err != nil {
-				fmt.Println(err)
+				err = g.Error(err)
+				if err != nil {
+					fmt.Println(err)
+				}
 			}
 		}
 	})