[jira] Updated: (HARMONY-3037) [classlib][nio]DatagramChannelImpl lacks support for direct byte buffer in wrtieImpl

["Leo Li (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-3037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leo Li updated HARMONY-3037:
----------------------------

    Attachment: patch-3037.zip

> [classlib][nio]DatagramChannelImpl lacks support for direct byte buffer in wrtieImpl
> ------------------------------------------------------------------------------------
>
>                 Key: HARMONY-3037
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3037
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>            Reporter: Leo Li
>         Attachments: patch-3037.zip
>
>
> As spec says, "Given a direct byte buffer, the Java virtual machine will make a best effort to perform native I/O operations directly upon it. That is, it will attempt to avoid copying the buffer's content to (or from) an intermediate buffer before (or after) each invocation of one of the underlying operating system's native I/O operation". However, in Harmony nio, DatagramChannelImpl does not differentiate whether the byte buffer is direct or not.

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