Refactor pprof labels and process desc (#32909)

* Deprecate "gopid" in log, it is not useful and requires very hacky
approach
* Remove "git.Command.SetDescription" because it is not useful and only
makes the logs too flexible

modules/util/runtime_test.go

@@ -0,0 +1,32 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package util
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCallerFuncName(t *testing.T) {
+	s := CallerFuncName(1)
+	assert.Equal(t, "code.gitea.io/gitea/modules/util.TestCallerFuncName", s)
+}
+
+func BenchmarkCallerFuncName(b *testing.B) {
+	// BenchmarkCaller/sprintf-12         	12744829	        95.49 ns/op
+	b.Run("sprintf", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = fmt.Sprintf("aaaaaaaaaaaaaaaa %s %s %s", "bbbbbbbbbbbbbbbbbbb", b.Name(), "ccccccccccccccccccccc")
+		}
+	})
+	// BenchmarkCaller/caller-12          	10625133	       113.6 ns/op
+	// It is almost as fast as fmt.Sprintf
+	b.Run("caller", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			CallerFuncName(1)
+		}
+	})
+}