1 files changed, 50 insertions, 0 deletions
diff --git a/modules/timeutil/executable.go b/modules/timeutil/executable.go
new file mode 100644
index 00000000..57ae8b2a
--- /dev/null
+++ b/modules/timeutil/executable.go
@@ -0,0 +1,50 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package timeutil
+
+import (
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"code.gitea.io/gitea/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
+}