// Copyright 2022 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package timeutil import (	"os"	"path/filepath"	"sync"	"time" 	"forgejo.org/modules/log") var (	executablModTime     = time.Now()	executablModTimeOnce sync.Once) // GetExecutableModTime get executable file modified time of current process.func GetExecutableModTime() time.Time {	executablModTimeOnce.Do(func() {		exePath, err := os.Executable()		if err != nil {			log.Error("os.Executable: %v", err)			return		} 		exePath, err = filepath.Abs(exePath)		if err != nil {			log.Error("filepath.Abs: %v", err)			return		} 		exePath, err = filepath.EvalSymlinks(exePath)		if err != nil {			log.Error("filepath.EvalSymlinks: %v", err)			return		} 		st, err := os.Stat(exePath)		if err != nil {			log.Error("os.Stat: %v", err)			return		} 		executablModTime = st.ModTime()	})	return executablModTime}