Initial commit (code only without large binaries)

EdgeNode/internal/caches/storage_file_plus.go

@@ -0,0 +1,58 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+//go:build plus
+
+package caches
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils/mmap"
+	"os"
+)
+
+func (this *FileStorage) tryMMAPReader(isPartial bool, estimatedSize int64, path string) (Reader, error) {
+	// TODO 因为在实践中MMAP耗费了太多CPU，在未解决之前先暂停支持
+	return nil, nil
+	var options = this.options // copy
+	if estimatedSize > 0 &&
+		!isPartial &&
+		(options != nil && options.EnableMMAP) &&
+		IsValidForMMAPSize(estimatedSize) {
+		var isOk bool
+		defer func() {
+			if !isOk {
+				_ = this.removeCacheFile(path)
+			}
+		}()
+
+		sharedMMAP, err := mmap.OpenSharedMMAP(path)
+		if err != nil {
+			if os.IsNotExist(err) {
+				isOk = true
+				return nil, ErrNotFound
+			}
+			return nil, err
+		}
+
+		reader, err := NewMMAPFileReader(sharedMMAP)
+		if err != nil {
+			if os.IsNotExist(err) {
+				isOk = true
+				return nil, ErrNotFound
+			}
+			return nil, err
+		}
+
+		err = reader.Init()
+		if err != nil {
+			if os.IsNotExist(err) {
+				isOk = true
+				return nil, ErrNotFound
+			}
+			return nil, err
+		}
+
+		isOk = true
+		return reader, nil
+	}
+
+	return nil, nil
+}