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Date: Wed, 23 May 2007 09:36:17 -0700 (PDT)
From: "Alexey Petrenko (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Commented: (HARMONY-3148) [Classlib][nio] alloc many
 DirectByteBuffers may cause memory-out-error
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    [ https://issues.apache.org/jira/browse/HARMONY-3148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12498289 ] 

Alexey Petrenko commented on HARMONY-3148:
------------------------------------------

And do not forget that System.gc call do not guarantee immediate GC run. In fact it just notify the VM that user wants to run gc.

> [Classlib][nio] alloc many DirectByteBuffers may cause memory-out-error
> -----------------------------------------------------------------------
>
>                 Key: HARMONY-3148
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3148
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Jimmy, Jing Lv
>         Assigned To: Alexey Petrenko
>         Attachments: H-3148_2.patch, patch-3148.zip
>
>
> Hi,
>      As discussed on mailing-list, DirectByteBuffer uses native memory which is out of GC-control, alloc many DirectByteBuffer may cause memory-out-error if they are not GCed, even they can be GCed at that time. 
>      This happens in Harmony but not in RI. This should be a bug of Harmony.
>      Note: other native memory users, e.g., java.util.zip.Deflater, may cause this problem as well.

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