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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 17:01:27 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945352#comment-14945352
] 

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

GitHub user vladisav reopened a pull request:

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

    IGNITE-638: Implements cache distributed semaphore

    This interface provides a rich API for working with distributed semaphore.
    Distributed semaphore provides functionality similar to java.util.concurrent.Semaphore.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/vladisav/ignite ignite-638

Alternatively you can review and apply these changes as the patch at:

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

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #120
    
----
commit e9567adec4057b0a0528735d4934440f4cd9fee3
Author: vladisav <vladisavj@gmail.com>
Date:   2015-09-25T09:14:18Z

    Implements distributed semaphore ignite-638
    
    This interface provides a rich API for working with distributed semaphore.
    Distributed semaphore provides functionality similar to java.util.concurrent.Semaphore.

commit be332a82711ddd7e9088e00d7f26edd7de407a11
Author: Vladisav Jelisavcic <vladisavj@gmail.com>
Date:   2015-10-01T18:19:32Z

    Fixes formatting issues;

commit 77f9deb7f79acb04b73994e83efd4539646073e6
Author: Vladisav Jelisavcic <vladisavj@gmail.com>
Date:   2015-10-03T10:44:02Z

    Fixes formatting issues;

----


> 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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