| 83 | } |
| 84 | |
| 85 | void ResolvablePromise::cancel() { |
| 86 | std::unique_lock<Mutex> lock(_mutex); |
| 87 | if (_canceled) { |
| 88 | return; |
| 89 | } |
| 90 | _canceled = true; |
| 91 | auto cancelCallback = std::move(_cancelCallback); |
| 92 | _cancelCallback = {}; // clear after move |
| 93 | lock.unlock(); |
| 94 | |
| 95 | if (cancelCallback) { |
| 96 | cancelCallback(); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | void ResolvablePromise::setCancelCallback(DispatchFunction cancelCallback) { |
| 101 | std::unique_lock<Mutex> lock(_mutex); |