From 0ca305a1bf33c4603d8cc215b2d9005f3c4cf2d6 Mon Sep 17 00:00:00 2001
From: John Guo <john@johng.cn>
Date: Fri, 11 Dec 2020 01:08:15 +0800
Subject: [PATCH] improve package gerror

---
 errors/gerror/gerror_stack.go                   |  2 ++
 errors/gerror/gerror_z_bench_test.go            | 17 +++++++++++++++++
 .../{gerror_test.go => gerror_z_unit_test.go}   |  0
 3 files changed, 19 insertions(+)
 create mode 100644 errors/gerror/gerror_z_bench_test.go
 rename errors/gerror/{gerror_test.go => gerror_z_unit_test.go} (100%)

diff --git a/errors/gerror/gerror_stack.go b/errors/gerror/gerror_stack.go
index bcf54cad3..d5fbb3ffb 100644
--- a/errors/gerror/gerror_stack.go
+++ b/errors/gerror/gerror_stack.go
@@ -12,10 +12,12 @@ import "runtime"
 type stack []uintptr
 
 const (
+	// maxStackDepth marks the max stack depth for error back traces.
 	maxStackDepth = 32
 )
 
 // callers returns the stack callers.
+// Note that it here just retrieves the caller memory address array not the caller information.
 func callers(skip ...int) stack {
 	var (
 		pcs [maxStackDepth]uintptr
diff --git a/errors/gerror/gerror_z_bench_test.go b/errors/gerror/gerror_z_bench_test.go
new file mode 100644
index 000000000..6877780d8
--- /dev/null
+++ b/errors/gerror/gerror_z_bench_test.go
@@ -0,0 +1,17 @@
+// Copyright GoFrame Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gerror
+
+import (
+	"testing"
+)
+
+func Benchmark_Stack(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		callers()
+	}
+}
diff --git a/errors/gerror/gerror_test.go b/errors/gerror/gerror_z_unit_test.go
similarity index 100%
rename from errors/gerror/gerror_test.go
rename to errors/gerror/gerror_z_unit_test.go