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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello –<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a mission critical java application executing on Debian Linux (lenny) running in jwrapper. On occasion the JVM crashes with the following output in the wrapper log file:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>java: ../../src/xcb_lock.c:33: _XCBUnlockDisplay: Assertion `xcb_get_request_sent(dpy->xcb->connection) == dpy->request' failed.<o:p></o:p></p><p class=MsoNormal>JVM received a signal UNKNOWN (6).<o:p></o:p></p><p class=MsoNormal>JVM process is gone.<o:p></o:p></p><p class=MsoNormal>JVM exited unexpectedly.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I believe the installed version of XCB on the offending machine is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoPlainText>ii libxcb-render-util0 0.2.1+git1-1 utility<o:p></o:p></p><p class=MsoPlainText>libraries for X C Binding -- render-util<o:p></o:p></p><p class=MsoPlainText>ii libxcb-render0 1.1-1.2 X C<o:p></o:p></p><p class=MsoPlainText>Binding, render extension<o:p></o:p></p><p class=MsoPlainText>ii libxcb-xlib0 1.1-1.2 X C<o:p></o:p></p><p class=MsoPlainText>Binding, Xlib/XCB interface library<o:p></o:p></p><p class=MsoPlainText>ii libxcb1 1.1-1.2<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There were reported problems with XCB and multithreaded applications dating back to 2008/2009 timeframe. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am curious if XCB has corrected any bug and if so, how to obtain a corrected library which supports multithreaded operation on Debian Linux lenny.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:navy'>Mitch Seybold<o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'>L-3 Telemetry-West<o:p></o:p></span></p><p class=MsoNormal><ns0:Street><ns0:address><ns0:Street><ns0:address><span style='color:navy'>3033 S. Parker Rd., Suite 1200</span></ns0:address></ns0:Street></ns0:address></ns0:Street><o:p></o:p></p><p class=MsoNormal><ns0:place><ns0:City></ns0:City></ns0:place><span style='color:navy'>Aurora, CO 80014</span><o:p></o:p></p><p class=MsoNormal><span style='color:navy'>(303) 369-4410 x2401<o:p></o:p></span></p><p class=MsoNormal><span style='color:navy'>(303) 319-9414 (cell)</span><o:p></o:p></p><p class=MsoNormal><span style='color:navy'>mitch.seybold@L-3com.com | L-3com.com/TW</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div>
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