const callbackMaxFrame = 64 * goarch.PtrSize

// compileCallback converts a Go function fn into a C function pointer
// that can be passed to Windows APIs.
//
// On 386, if cdecl is true, the returned C function will use the
// cdecl calling convention; otherwise, it will use stdcall. On amd64,
// it always uses fastcall. On arm, it always uses the ARM convention.
//
//go:linkname compileCallback syscall.compileCallback

	return e == EINTR || e == EMFILE || e.Timeout()
}

func (e Errno) Timeout() bool {
	return e == EAGAIN || e == EWOULDBLOCK || e == ETIMEDOUT
}

// Implemented in runtime/syscall_windows.go.
func compileCallback(fn any, cleanstack bool) uintptr

// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention.
// This is useful when interoperating with Windows code requiring callbacks.

			if mp.resumesema != 0 {
				stdcall1(_SetEvent, mp.resumesema)
			}
		}
		return 0
	}
	params := _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS{
		callback: compileCallback(*efaceOf(&fn), true),
	}
	handle := uintptr(0)
	stdcall3(powerRegisterSuspendResumeNotification, _DEVICE_NOTIFY_CALLBACK,
		uintptr(unsafe.Pointer(&params)), uintptr(unsafe.Pointer(&handle)))
}