| 1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "flutter/fml/memory/weak_ptr_internal.h" |
| 6 | |
| 7 | #include "flutter/fml/logging.h" |
| 8 | |
| 9 | namespace fml { |
| 10 | namespace internal { |
| 11 | |
| 12 | WeakPtrFlag::WeakPtrFlag() : is_valid_(true) {} |
| 13 | |
| 14 | WeakPtrFlag::~WeakPtrFlag() { |
| 15 | // Should be invalidated before destruction. |
| 16 | FML_DCHECK(!is_valid_); |
| 17 | } |
| 18 | |
| 19 | void WeakPtrFlag::Invalidate() { |
| 20 | // Invalidation should happen exactly once. |
| 21 | FML_DCHECK(is_valid_); |
| 22 | is_valid_ = false; |
| 23 | } |
| 24 | |
| 25 | } // namespace internal |
| 26 | } // namespace fml |
| 27 |