| 140 | { |
| 141 | public: |
| 142 | void wait() |
| 143 | { |
| 144 | // NOTE: we must check `commissioned` AFTER we have incremented |
| 145 | // `waiters` otherwise we might race with `decomission()` and fail |
| 146 | // to properly get signaled. |
| 147 | waiters.fetch_add(1); |
| 148 | |
| 149 | if (!comissioned.load()) { |
| 150 | waiters.fetch_sub(1); |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | KernelSemaphore::wait(); |
| 155 | |
| 156 | waiters.fetch_sub(1); |
| 157 | } |
| 158 | |
| 159 | void decomission() |
| 160 | { |