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cache.go
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cache.go
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// SPDX-FileCopyrightText: 2018 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later
package systeminfo
import (
"encoding/gob"
"os"
"path/filepath"
"sync"
"github.com/linuxdeepin/go-lib/xdg/basedir"
)
var (
cacheLocker sync.Mutex
cacheFile = filepath.Join(basedir.GetUserCacheDir(),
"deepin/dde-daemon/systeminfo.cache")
)
func doReadCache(file string) (*SystemInfo, error) {
cacheLocker.Lock()
defer cacheLocker.Unlock()
fp, err := os.Open(file)
if err != nil {
return nil, err
}
defer fp.Close()
var info SystemInfo
decoder := gob.NewDecoder(fp)
err = decoder.Decode(&info)
if err != nil {
return nil, err
}
return &info, nil
}
func doSaveCache(info *SystemInfo, file string) error {
cacheLocker.Lock()
defer cacheLocker.Unlock()
err := os.MkdirAll(filepath.Dir(file), 0755)
if err != nil {
return err
}
fp, err := os.Create(file)
if err != nil {
return err
}
defer fp.Close()
encoder := gob.NewEncoder(fp)
err = encoder.Encode(info)
if err != nil {
return err
}
return fp.Sync()
}