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From "Edouard De Oliveira (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DIRMINA-622) Initialise return ByteBuffer from PoolByteBufferAllokator with 0
Date Mon, 24 Nov 2008 01:47:44 GMT

     [ https://issues.apache.org/jira/browse/DIRMINA-622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Edouard De Oliveira resolved DIRMINA-622.
-----------------------------------------

    Resolution: Fixed
      Assignee: Edouard De Oliveira

> Initialise return ByteBuffer from PoolByteBufferAllokator with 0
> ----------------------------------------------------------------
>
>                 Key: DIRMINA-622
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-622
>             Project: MINA
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.1.7
>            Reporter: Stefan Gmeiner
>            Assignee: Edouard De Oliveira
>            Priority: Trivial
>             Fix For: 1.1.8
>
>
> A ByteBuffer returned by calling ByteBuffer.allocate() on a PooledByteBufferAllocator
is not guarenteed to be initialised to 0 as it would be if a SimpleByteBufferAllocator was
used.
> The java equivalent java.nio.ByteBuffers are always initialised with 0 hence the MINA
variant should also follow this convention independent if PooledByteBufferAllocator was used
or not.
>  
> import org.apache.mina.common.ByteBuffer;
> public class PooledByteBufferTest {
>        public static void main(String[] args) {
>                ByteBuffer.setAllocator(new PooledByteBufferAllocator());
>                ByteBuffer buffer1 = ByteBuffer.allocate(100);
>                System.out.println("buffer1[0]=" + buffer1.getInt(0)); // prints 0
>                buffer1.putInt(42);
>                System.out.println("buffer1[0]=" + buffer1.getInt(0)); // prints 42
>                buffer1.release();
>                ByteBuffer buffer2 = ByteBuffer.allocate(100);
>                System.out.println("buffer1[0]=" + buffer2.getInt(0)); // prints 42 instead
of 0
>        }
> }

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