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//go:build windows
package filelock
import (
"golang.org/x/sys/windows"
)
func tryLockExclusive(fd uintptr) error {
var ol windows.Overlapped
err := windows.LockFileEx(windows.Handle(fd), windows.LOCKFILE_EXCLUSIVE_LOCK|windows.LOCKFILE_FAIL_IMMEDIATELY, 0, 1, 0, &ol)
if err == nil {
return nil
}
if err == windows.ERROR_LOCK_VIOLATION {
return ErrWouldBlock
}
return err
}
func unlockExclusive(fd uintptr) error {
var ol windows.Overlapped
return windows.UnlockFileEx(windows.Handle(fd), 0, 1, 0, &ol)
}
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