Wait for request capacity in the semaphore.
Declared in <folly/fibers/SemaphoreBase.h>
coro::Task<void>
co_wait_common(int64_t tokens);Note that this wait-operation can be cancelled by requesting cancellation on the awaiting coroutine's associated CancellationToken. If the operation is successfully cancelled then it will complete with an error of type folly::OperationCancelled.
Note that requesting cancellation of the operation will only have an effect if the operation does not complete synchronously (ie. was not already in a signalled state).
If the semaphore was already in a signalled state prior to awaiting the returned Task then the operation will complete successfully regardless of whether cancellation was requested.
A coroutine task that completes once the tokens are acquired.
| Name | Description |
|---|---|
| tokens | Number of tokens to acquire. |