add the log output

defaults_onexit.go

@@ -14,10 +14,7 @@
 
 package defaults
 
-import (
-	"log/slog"
-	"os"
-)
+import "os"
 
 var (
 	// ExitFunc is used to exit the program.
@@ -36,5 +33,5 @@ func Exit(code int) { ExitFunc.Get()(code) }
 func OnExit(f func()) { OnExitFunc.Get()(f) }
 
 func onexit(f func()) {
-	slog.Warn("system does not set the exit function register", "caller", caller(1))
+	logwarn("system does not set the exit function register", "caller", caller(2))
 }

defaults_oninit.go

@@ -14,8 +14,6 @@
 
 package defaults
 
-import "log/slog"
-
 var (
 	// OnInitFunc is used to register the init function.
 	OnInitFunc = NewValueWithValidation(oninit, fA1Validation[func()]("OnInit"))
@@ -25,5 +23,5 @@ var (
 func OnInit(f func()) { OnInitFunc.Get()(f) }
 
 func oninit(f func()) {
-	slog.Warn("system does not set the init function register", "caller", caller(1))
+	logwarn("system does not set the init function register", "caller", caller(2))
 }

defaults_stacks.go

@@ -72,7 +72,7 @@ func trimPkgFile(file string) string {
 
 func caller(skip int) (caller string) {
 	pcs := make([]uintptr, 1)
-	if n := runtime.Callers(skip+3, pcs); n > 0 {
+	if n := runtime.Callers(skip+2, pcs); n > 0 {
 		frame, _ := runtime.CallersFrames(pcs).Next()
 		if frame.PC != 0 {
 			return fmtframe(frame)

defaults_value.go

@@ -0,0 +1,43 @@
+// Copyright 2024 xgfone
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package defaults
+
+import (
+	"log/slog"
+	"os"
+	"strconv"
+)
+
+var isdebug bool
+
+func init() {
+	isdebug, _ = strconv.ParseBool(os.Getenv("DEBUG"))
+}
+
+func logwarn(msg string, kvs ...any) {
+	slog.Warn(msg, kvs...)
+}
+
+func logset() {
+	if isdebug {
+		slog.Info("set the default", "caller", caller(2))
+	}
+}
+
+func logswap() {
+	if isdebug {
+		slog.Info("swap the default", "caller", caller(2))
+	}
+}

defaults_value_atomic.go

@@ -56,6 +56,7 @@ func (v *Value[T]) Set(new T) {
 		panic(err)
 	}
 	v.value.Store(valuer[T]{Value: new})
+	logset()
 }
 
 // Swap sets the value to new thread-safely and returns the old value.
@@ -68,6 +69,7 @@ func (v *Value[T]) Swap(new T) (old T) {
 	if value := v.value.Swap(valuer[T]{Value: new}); value != nil {
 		old = value.(valuer[T]).Value
 	}
+	logswap()
 	return
 }
 

defaults_value_notatomic.go

@@ -45,6 +45,7 @@ func (v *Value[T]) Set(new T) {
 		panic(err)
 	}
 	v.value = new
+	logset()
 }
 
 // Swap sets the value to new and returns the old value.
@@ -56,6 +57,7 @@ func (v *Value[T]) Swap(new T) (old T) {
 	}
 	old = v.value
 	v.value = new
+	logswap()
 	return
 }