Date: Mon, 1 Feb 2010 01:44:41 +0100 From: Pieter de Goeje <pieter@degoeje.nl> To: freebsd-java@freebsd.org Cc: Joe Lin <jlin@maxiscale.com> Subject: Re: DatagramCahnnel scatter/gather problem on diablo 1.6.0_07-b02 Message-ID: <201002010144.41376.pieter@degoeje.nl> In-Reply-To: <8B6860326495B2438DCBEA74AA981C7A78B220E0@MBX01.exg5.exghost.com> References: <8B6860326495B2438DCBEA74AA981C7A78B220E0@MBX01.exg5.exghost.com>
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On Monday 01 February 2010 01:01:38 Joe Lin wrote: > Hi I wrote a sample program trying to use > DatagramChannel.write(ByteBuffer[] bufs). The exact same code works on > Windows and Linux. But it fails on the Diablo VM under FreeBSD 7.0 64 bit. > The exception: > > Exception in thread "main" java.io.IOException: Invalid argument > at sun.nio.ch.DatagramDispatcher.writev0(Native Method) > at sun.nio.ch.DatagramDispatcher.writev(DatagramDispatcher.java:37) > at sun.nio.ch.IOUtil.write(IOUtil.java:164) > at > sun.nio.ch.DatagramChannelImpl.write0(DatagramChannelImpl.java:414) at > sun.nio.ch.DatagramChannelImpl.write(DatagramChannelImpl.java:431) at > java.nio.channels.DatagramChannel.write(DatagramChannel.java:418) at > coco.McastSender.main(McastSender.java:68). I can confirm it also doesn't work on FreeBSD 8/i386 and amd64 using jdk6 or openjdk6. I find it odd why it works on Linux because they have exactly the same writev(2) as we do. Scatter/gather I/O isn't very often used so I guess you're the first one that has run into this problem. -- Pieter de Goeje
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