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From "Krome Plasma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-637) Implement IgniteReentrantReadWriteLock data structure
Date Tue, 19 Jul 2016 10:11:20 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15383893#comment-15383893

Krome Plasma commented on IGNITE-637:

Vladisav, because I have specific needs for RW locking I haven't tested much of ordinary IgniteLock.

> Implement IgniteReentrantReadWriteLock data structure
> -----------------------------------------------------
>                 Key: IGNITE-637
>                 URL: https://issues.apache.org/jira/browse/IGNITE-637
>             Project: Ignite
>          Issue Type: Sub-task
>          Components: data structures
>            Reporter: Dmitriy Setrakyan
>            Assignee: Vladisav Jelisavcic
> We need to add {{IgniteReentrantReadWriteLock}} data structure in addition to other data
structures provided by Ignite. {{IgniteReentrantReadWriteLock}} should have similar API to
{{java.util.concurrent.locks.ReentrantReadWriteLock}} 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]
> In general we need to have an entity in ATOMIC cache storing number of readers and writers
and allow user threads to block whenever needed to wait for a lock.

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