pin

type ConcurrentPinner struct {
	runtime.Pinner
	sync.Mutex
}

type Pinner interface {
	// Pin pins a Go object, preventing it from being moved or freed by the
	// garbage collector until the [Pinner.Unpin] method has been called.
	//
	// A pointer to a pinned object can be directly stored in C memory or can be
	// contained in Go memory passed to C functions. If the pinned object itself
	// contains pointers to Go objects, these objects must be pinned separately if
	// they are going to be accessed from C code.
	//
	// The argument must be a pointer of any type or an [unsafe.Pointer].
	// It's safe to call Pin on non-Go pointers, in which case Pin will do
	// nothing.
	Pin(any)

	// Unpin unpins all pinned objects of the [Pinner].
	Unpin()
}