// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
//go:build plus && !darwin

package caches

import (
	memutils "github.com/TeaOSLab/EdgeNode/internal/utils/mem"
	"github.com/TeaOSLab/EdgeNode/internal/utils/mmap"
)

func IsValidForMMAPSize(size int64) bool {
	var availableGB = int64(memutils.AvailableMemoryGB())
	if availableGB < 1 {
		return false
	}

	if mmap.TotalMMAPFileSize() > (availableGB << 27) /** 1/8 availableGB **/ {
		return false
	}

	return size > (256<<10) && size < maxMMAPFileSize
}