39 lines
746 B
Go
39 lines
746 B
Go
//go:build windows
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package processlock
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import (
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"errors"
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"fmt"
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"os"
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"golang.org/x/sys/windows"
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)
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func lockFile(file *os.File) error {
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overlapped := new(windows.Overlapped)
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err := windows.LockFileEx(
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windows.Handle(file.Fd()),
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windows.LOCKFILE_EXCLUSIVE_LOCK|windows.LOCKFILE_FAIL_IMMEDIATELY,
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0,
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1,
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0,
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overlapped,
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)
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if errors.Is(err, windows.ERROR_LOCK_VIOLATION) {
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return ErrLocked
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}
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if err != nil {
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return fmt.Errorf("获取进程锁失败：%w", err)
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}
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return nil
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}
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func unlockFile(file *os.File) error {
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overlapped := new(windows.Overlapped)
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if err := windows.UnlockFileEx(windows.Handle(file.Fd()), 0, 1, 0, overlapped); err != nil {
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return fmt.Errorf("释放进程锁失败：%w", err)
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}
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return nil
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}
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