PhuocNTB
b4c3155564
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50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
//go:build unix
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package singleinstance
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import (
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"fmt"
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"os"
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"path/filepath"
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"time"
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"client/internal/winapi"
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"golang.org/x/sys/unix"
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)
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// Giữ file lock mở suốt đời process.
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var lockFile *os.File
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// Acquire — flock non-blocking trên file trong config dir.
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func Acquire() error {
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configDir, err := os.UserConfigDir()
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if err != nil {
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configDir = os.TempDir()
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}
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dir := filepath.Join(configDir, "SimpleCare")
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_ = os.MkdirAll(dir, 0755)
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path := filepath.Join(dir, "instance.lock")
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f, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0644)
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if err != nil {
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return err
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}
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if err := unix.Flock(int(f.Fd()), unix.LOCK_EX|unix.LOCK_NB); err != nil {
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_ = f.Close()
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winapi.ActivateAppWindow(windowTitle)
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winapi.ShowWarningMessageBox(
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"Simple Care",
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"Ứng dụng Simple Care đang chạy.\n\nChỉ được mở một cửa sổ.",
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)
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// Cho dialog async kịp hiện trước khi process thoát.
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time.Sleep(1500 * time.Millisecond)
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fmt.Fprintln(os.Stderr, "Simple Care is already running")
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return ErrAlreadyRunning
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}
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_, _ = f.WriteString(fmt.Sprintf("%d\n", os.Getpid()))
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_ = f.Sync()
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lockFile = f
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return nil
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}
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