| 90 | } |
| 91 | |
| 92 | bool CancellationManager::TryDeregisterCallback(CancellationToken token) { |
| 93 | mutex_lock lock(mu_); |
| 94 | if (is_cancelled_ || is_cancelling_) { |
| 95 | return false; |
| 96 | } else { |
| 97 | callbacks_.erase(token); |
| 98 | return true; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | CancellationManager::~CancellationManager() { |
| 103 | if (!callbacks_.empty()) { |