Dmitriy Setrakyan created IGNITE-638:
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Summary: Implement IgniteSemaphore data structure
Key: IGNITE-638
URL: https://issues.apache.org/jira/browse/IGNITE-638
Project: Ignite
Issue Type: New Feature
Components: data structures
Reporter: Dmitriy Setrakyan
We need to add {{IgniteSemaphore}} data structure in addition to other data
structures provided by Ignite. {{IgniteSemaphore}} should have similar API to
{{java.util.concurrent.IgniteSemaphore}} class in JDK.
As an example, you can see how
[IgniteCountDownLatch|https://github.com/apache/incubator-ignite/blob/master/modules/core/src/main/java/org/apache/ignite/IgniteCountDownLatch.java]
is implemented in
[GridCacheCountDownLatchImpl|https://github.com/apache/incubator-ignite/blob/master/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheCountDownLatchImpl.java]
class.
In general we need to have an entity in ATOMIC cache storing number of permits
and allow user threads to block whenever no more permits are available.
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