4 stable releases
1.1.0 | Mar 13, 2020 |
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1.0.2 | Mar 12, 2020 |
#1164 in Concurrency
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waitmap
Wait Map is an async/await concurrency primitive implemented as a concurrent hashmap. It is built on top of the [dashmap][dashmap] concurrent hashmap, with an additional "wait" API.
The wait API lets users wait on one task for an entry to be filled by another task. For example:
let map: WaitMap<String, Value>;
// This will wait until a value is put under the key "Rosa Luxemburg"
if let Some(value) = map.wait("Rosa Luxemburg").await {
// ...
}
It also supports a cancellation API, to cause any task waiting on an entry being filled to stop
waiting (the future evaluating to None, just as if they had called get
and the key was empty):
// This will cause the other task to stop waiting, it receives a `None` value:
map.cancel("Rosa Luxemburg");
Dependencies
~420KB