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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-638) Implement IgniteSemaphore data structure
Date Tue, 06 Oct 2015 17:01:26 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945350#comment-14945350
] 

ASF GitHub Bot commented on IGNITE-638:
---------------------------------------

Github user vladisav closed the pull request at:

    https://github.com/apache/ignite/pull/120


> Implement IgniteSemaphore data structure
> ----------------------------------------
>
>                 Key: IGNITE-638
>                 URL: https://issues.apache.org/jira/browse/IGNITE-638
>             Project: Ignite
>          Issue Type: Sub-task
>          Components: data structures
>            Reporter: Dmitriy Setrakyan
>            Assignee: Vladisav Jelisavcic
>
> 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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