Date: Sun, 16 Jan 2011 16:31:17 -0500 From: Andrew Gallatin <gallatin@cs.duke.edu> To: freebsd-emulation@freebsd.org Subject: epoll workaround for linux java? Message-ID: <4D3363A5.9000207@cs.duke.edu>
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Hi, I'm trying to run SageTV, which is a commercial, closed source linux media server on -current. It is a Java based application that uses "native" linux JNI libs for accessing video tuner cards, so unfortunately I must run the Linux JVM, and not a native JVM. I've installed the default linux_base-f10, and the linux-sun-jdk-1.6.0.22. When I start the application, it semi-works, but the clients cannot connect. Using kdump && linux-ktrace, I think I've narrowed the problem to: 9613 java CALL linux_epoll_create 9613 java RET linux_epoll_create -1 errno 78 Function not implemented 9613 java CALL gettimeofday(0x513c9ea0,0) 9613 java RET gettimeofday 0 9613 java CALL gettimeofday(0x513c9eb4,0) 9613 java RET gettimeofday 0 9613 java CALL write(0x4,0x513c7cb0,0x78) 9613 java GIO fd 4 wrote 120 bytes "Sun 1/16 12:05:57.648 [MiniUIServer@14b5f4a] MiniUI ServerSocket died from:java.io.IOException: Function not impleme\ nted" I've done some googling, and it appears that epoll support was worked on as a SOC project in 2007 by rdivacky. Eg: http://p4db.freebsd.org/fileLogView.cgi?FSPC=//depot/projects/soc2007/rdivacky/linux_epoll/sys/compat/linux/linux_epoll.c Were there problems with this code? Last, is there any workaround to be able to use a linux jvm? Perhaps by using a different linux base? What would I be giving up? Thanks! Drew
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