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Date:      Wed, 05 Feb 2003 17:07:53 -0600
From:      Steve Peterson <stevep-hv@zpfe.com>
To:        java@freebsd.org
Subject:   Repeatable SIGSEGV
Message-ID:  <5.2.0.9.0.20030205165734.02bb3398@magpie.zpfe.com>

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Greetings.  I'm running Tomcat and HSQLDB in jdk-1.3.1p7_2 on 
4.7-RELEASE-p3, and am getting a repeatable SIGSEGV.  Ideas?  I don't have 
a lot of experience troubleshooting these, but this looks like a suspect:

     "HttpProcessor[8180][4]" (TID:0x28e04bf0, sys_thread_t:0x8ade480, 
state:R) prio=5
	at java.lang.StringBuffer.expandCapacity(StringBuffer.java:202)

Dump below.

Steve

--

SIGSEGV   11*  segmentation violation

Full thread dump Classic VM (1.3.1-p7-root-021118-12:01, green threads):
     "Thread-10" (TID:0x28e3e6e8, sys_thread_t:0x94a9c80, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at org.hsqldb.Log.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:484)
     "Hsqldb control process" (TID:0x28bfe628, sys_thread_t:0x9487280, 
state:R) prio=5
	at org.hsqldb.Cache.<init>(Unknown Source)
	at org.hsqldb.Log.getCache(Unknown Source)
	at org.hsqldb.Database$Logger.cleanUp(Unknown Source)
	at org.hsqldb.Database.execute(Unknown Source)
	at org.hsqldb.Log.runScript(Unknown Source)
	at org.hsqldb.Log.open(Unknown Source)
	at org.hsqldb.Database$Logger.openLog(Unknown Source)
	at org.hsqldb.Database.open(Unknown Source)
	at org.hsqldb.Database.<init>(Unknown Source)
	at org.hsqldb.Server.openDB(Unknown Source)
	at org.hsqldb.Server.run(Unknown Source)
	at org.hsqldb.Server.main(Unknown Source)
	at acornbay.corpweb.util.HSQLServer.run(HSQLServer.java:67)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[]" (TID:0x28c00698, sys_thread_t:0x8622080, state:CW) 
prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "Thread-7" (TID:0x28d3a230, sys_thread_t:0x9366680, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at org.hsqldb.Log.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:484)
     "Thread-4" (TID:0x28d70af8, sys_thread_t:0x928ca80, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at org.hsqldb.Log.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/original_root]" (TID:0x28cb9b48, 
sys_thread_t:0x9195480, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/webdav]" (TID:0x28d2cfe0, sys_thread_t:0x9195280, 
state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "Thread-2" (TID:0x28d043f0, sys_thread_t:0x9149a80, state:CW) prio=5
	at java.net.SocketInputStream.socketRead(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:86)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:186)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:204)
	at java.io.DataInputStream.readInt(DataInputStream.java:338)
	at org.hsqldb.ServerConnection.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/examples]" (TID:0x28d826b8, sys_thread_t:0x8f77e80, 
state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/tomcat-docs]" (TID:0x28ddfb18, 
sys_thread_t:0x8f77880, state:R) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/struts-blank]" (TID:0x28daa850, 
sys_thread_t:0x8ebe280, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/struts-example]" (TID:0x28e30940, 
sys_thread_t:0x8c77880, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/struts-documentation]" (TID:0x28dc1ea8, 
sys_thread_t:0x8b6de80, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/admin]" (TID:0x28e41170, sys_thread_t:0x8b27080, 
state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "StandardManager[/manager]" (TID:0x28e61168, sys_thread_t:0x8afa880, 
state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at 
org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:780)
	at org.apache.catalina.session.StandardManager.run(StandardManager.java:839)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Processor[8019][4]" (TID:0x28e55860, sys_thread_t:0x8afa680, 
state:CW) prio=5
	at java.net.SocketInputStream.socketRead(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:86)
	at org.apache.ajp.Ajp13.readN(Ajp13.java:429)
	at org.apache.ajp.Ajp13.receive(Ajp13.java:469)
	at org.apache.ajp.Ajp13.receiveNextRequest(Ajp13.java:274)
	at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:396)
	at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Processor[8019][3]" (TID:0x28e57c20, sys_thread_t:0x8afa480, 
state:CW) prio=5
	at java.net.SocketInputStream.socketRead(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:86)
	at org.apache.ajp.Ajp13.readN(Ajp13.java:429)
	at org.apache.ajp.Ajp13.receive(Ajp13.java:469)
	at org.apache.ajp.Ajp13.receiveNextRequest(Ajp13.java:274)
	at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:396)
	at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Processor[8019][2]" (TID:0x28e5aed0, sys_thread_t:0x8afa280, 
state:CW) prio=5
	at java.net.SocketInputStream.socketRead(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:86)
	at org.apache.ajp.Ajp13.readN(Ajp13.java:429)
	at org.apache.ajp.Ajp13.receive(Ajp13.java:469)
	at org.apache.ajp.Ajp13.receiveNextRequest(Ajp13.java:274)
	at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:396)
	at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Processor[8019][1]" (TID:0x28e5c968, sys_thread_t:0x8afa080, 
state:CW) prio=5
	at java.net.SocketInputStream.socketRead(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:86)
	at org.apache.ajp.Ajp13.readN(Ajp13.java:429)
	at org.apache.ajp.Ajp13.receive(Ajp13.java:469)
	at org.apache.ajp.Ajp13.receiveNextRequest(Ajp13.java:274)
	at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:396)
	at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:551)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Processor[8019][0]" (TID:0x28e5ef70, sys_thread_t:0x8adee80, 
state:CW) prio=5
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at org.apache.ajp.tomcat4.Ajp13Processor.await(Ajp13Processor.java:316)
	at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:542)
	at java.lang.Thread.run(Thread.java:484)
     "Ajp13Connector[8019]" (TID:0x28e04828, sys_thread_t:0x8ade680, 
state:CW) prio=5
	at java.net.PlainSocketImpl.socketAccept(Native Method)
	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421)
	at java.net.ServerSocket.implAccept(ServerSocket.java:243)
	at java.net.ServerSocket.accept(ServerSocket.java:222)
	at org.apache.ajp.tomcat4.Ajp13Connector.run(Ajp13Connector.java:841)
	at java.lang.Thread.run(Thread.java:484)
     "HttpProcessor[8180][4]" (TID:0x28e04bf0, sys_thread_t:0x8ade480, 
state:R) prio=5
	at java.lang.StringBuffer.expandCapacity(StringBuffer.java:202)
	at java.lang.StringBuffer.append(StringBuffer.java:455)
	at org.apache.commons.digester.Digester.characters(Digester.java:945)
	at 
org.apache.xerces.parsers.AbstractSAXParser.characters(AbstractSAXParser.java:513)
	at 
org.apache.xerces.impl.XMLNamespaceBinder.characters(XMLNamespaceBinder.java:609)
	at 
org.apache.xerces.impl.dtd.XMLDTDValidator.characters(XMLDTDValidator.java:839)
	at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanCDATASection(XMLDocumentFragmentScannerImpl.java:920)
	at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1473)
	at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:333)
	at org.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguration.java:524)
	at org.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguration.java:580)
	at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:152)
	at 
org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1169)
	at org.apache.commons.digester.Digester.parse(Digester.java:1562)
	at 
org.apache.commons.validator.ValidatorResourcesInitializer.initialize(ValidatorResourcesInitializer.java:256)
	at 
org.apache.struts.validator.ValidatorPlugIn.initResources(ValidatorPlugIn.java:224)
	at org.apache.struts.validator.ValidatorPlugIn.init(ValidatorPlugIn.java:167)
	at 
org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:1105)
	at org.apache.struts.action.ActionServlet.init(ActionServlet.java:471)
	at javax.servlet.GenericServlet.init(GenericServlet.java:256)
	at 
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:924)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:813)
	at 
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3341)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:3534)
	at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:821)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:579)
	at 
org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:257)
	at org.apache.catalina.core.StandardHost.install(StandardHost.java:772)
	at 
org.apache.catalina.servlets.ManagerServlet.install(ManagerServlet.java:650)
	at org.apache.catalina.servlets.ManagerServlet.doGet(ManagerServlet.java:342)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
	at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:527)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2396)
	at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:469)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1040)
	at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1151)
	at java.lang.Thread.run(Thread.java:484)
     "HttpProcessor[8180][3]" (TID:0x28e11228, sys_thread_t:0x8ade280, 
state:CW) prio=5
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at 
org.apache.catalina.connector.http.HttpProcessor.await(HttpProcessor.java:391)
	at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1145)
	at java.lang.Thread.run(Thread.java:484)
     "HttpProcessor[8180][2]" (TID:0x28e11cd0, sys_thread_t:0x8ade080, 
state:CW) prio=5
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at 
org.apache.catalina.connector.http.HttpProcessor.await(HttpProcessor.java:391)
	at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1145)
	at java.lang.Thread.run(Thread.java:484)
     "HttpProcessor[8180][1]" (TID:0x28e128b0, sys_thread_t:0x8abae80, 
state:CW) prio=5
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at 
org.apache.catalina.connector.http.HttpProcessor.await(HttpProcessor.java:391)
	at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1145)
	at java.lang.Thread.run(Thread.java:484)
     "HttpProcessor[8180][0]" (TID:0x28e130e0, sys_thread_t:0x8abac80, 
state:CW) prio=5
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at 
org.apache.catalina.connector.http.HttpProcessor.await(HttpProcessor.java:391)
	at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1145)
	at java.lang.Thread.run(Thread.java:484)
     "HttpConnector[8180]" (TID:0x28e2d198, sys_thread_t:0x8aa6a80, 
state:CW) prio=5
	at java.net.PlainSocketImpl.socketAccept(Native Method)
	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421)
	at java.net.ServerSocket.implAccept(ServerSocket.java:243)
	at java.net.ServerSocket.accept(ServerSocket.java:222)
	at 
org.apache.catalina.connector.http.HttpConnector.run(HttpConnector.java:1023)
	at java.lang.Thread.run(Thread.java:484)
     "HostConfig[localhost]" (TID:0x28e2d8f0, sys_thread_t:0x8aa6480, 
state:MW) prio=5
	at org.apache.catalina.core.ContainerBase.findChildren(ContainerBase.java:923)
	at 
org.apache.catalina.core.StandardHostDeployer.findDeployedApps(StandardHostDeployer.java:376)
	at 
org.apache.catalina.core.StandardHost.findDeployedApps(StandardHost.java:829)
	at 
org.apache.catalina.startup.HostConfig.checkWebXmlLastModified(HostConfig.java:592)
	at org.apache.catalina.startup.HostConfig.run(HostConfig.java:1015)
	at java.lang.Thread.run(Thread.java:484)
     "Thread-1" (TID:0x28e341b0, sys_thread_t:0x84b6e80, state:CW) prio=5
	at java.lang.Thread.sleep(Native Method)
	at org.hsqldb.Log.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:484)
     "Hsqldb control process" (TID:0x28e328f8, sys_thread_t:0x889a880, 
state:CW) prio=5
	at java.net.PlainSocketImpl.socketAccept(Native Method)
	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421)
	at java.net.ServerSocket.implAccept(ServerSocket.java:243)
	at java.net.ServerSocket.accept(ServerSocket.java:222)
	at org.hsqldb.Server.run(Unknown Source)
	at org.hsqldb.Server.main(Unknown Source)
	at acornbay.corpweb.util.HSQLServer.run(HSQLServer.java:67)
	at java.lang.Thread.run(Thread.java:484)
     "Finalizer" (TID:0x28e78528, sys_thread_t:0x80d4080, state:CW) prio=8
	at java.lang.Object.wait(Native Method)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:108)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:123)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:162)
     "Reference Handler" (TID:0x28e78300, sys_thread_t:0x8096480, state:CW) 
prio=10
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:420)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:110)
     "Signal dispatcher" (TID:0x28e78330, sys_thread_t:0x8096280, state:CW) 
prio=5
     "main" (TID:0x28e781b0, sys_thread_t:0x8054080, state:CW) prio=5
	at java.net.PlainSocketImpl.socketAccept(Native Method)
	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:421)
	at java.net.ServerSocket.implAccept(ServerSocket.java:243)
	at java.net.ServerSocket.accept(ServerSocket.java:222)
	at org.apache.catalina.core.StandardServer.await(StandardServer.java:526)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:519)
	at org.apache.catalina.startup.Catalina.execute(Catalina.java:400)
	at org.apache.catalina.startup.Catalina.process(Catalina.java:180)
	at java.lang.reflect.Method.invoke(Native Method)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:203)
Monitor Cache Dump:
     org.apache.catalina.core.StandardWrapper@28D2ED00/2A5F5840: owner 
"HttpProcessor[8180][4]" (0x8ade480) 2 entries
     org.apache.catalina.connector.http.HttpProcessor@28E11CF0/29179CC0: 
<unowned>
	Waiting to be notified:
	    "HttpProcessor[8180][3]" (0x8ade280)
     org.hsqldb.Database@28E68548/29654D18: owner "Hsqldb control process" 
(0x9487280) 1 entry
     org.apache.ajp.tomcat4.Ajp13Processor@28E01928/2917ECA8: <unowned>
	Waiting to be notified:
	    "Ajp13Processor[8019][0]" (0x8adee80)
     org.apache.catalina.connector.http.HttpProcessor@28E125C0/291774E0: 
<unowned>
	Waiting to be notified:
	    "HttpProcessor[8180][2]" (0x8ade080)
     java.net.PlainSocketImpl@28E3FB30/29129CD8: owner "Hsqldb control 
process" (0x889a880) 1 entry
     java.lang.ref.ReferenceQueue$Lock@28E78540/28EAE460: <unowned>
	Waiting to be notified:
	    "Finalizer" (0x80d4080)
     java.net.PlainSocketImpl@28E048F8/2917DCB8: owner 
"Ajp13Connector[8019]" (0x8ade680) 1 entry
     org.apache.catalina.core.StandardContext@28D80098/2A118CF8: owner 
"HttpProcessor[8180][4]" (0x8ade480) 1 entry
     java.lang.ref.Reference$Lock@28E78310/28EADF80: <unowned>
	Waiting to be notified:
	    "Reference Handler" (0x8096480)
     java.util.HashMap@28E84C28/28F8A2B0: owner "HttpProcessor[8180][4]" 
(0x8ade480) 1 entry
	Waiting to enter:
	    "HostConfig[localhost]" (0x8aa6480)
     java.net.PlainSocketImpl@28E75530/28FD29E0: owner 
"HttpConnector[8180]" (0x8aa6a80) 1 entry
     java.io.BufferedInputStream@28D04818/295B3288: owner "Thread-2" 
(0x9149a80) 1 entry
     org.apache.catalina.connector.http.HttpProcessor@28E13100/291755F8: 
<unowned>
	Waiting to be notified:
	    "HttpProcessor[8180][1]" (0x8abae80)
     org.apache.catalina.core.StandardHostDeployer@28E82400/28F8A6B8: owner 
"HttpProcessor[8180][4]" (0x8ade480) 1 entry
     java.net.PlainSocketImpl@28E54F50/2914A8E0: owner "main" (0x8054080) 1 
entry
     org.apache.catalina.connector.http.HttpProcessor@28E2C2C8/29167040: 
<unowned>
	Waiting to be notified:
	    "HttpProcessor[8180][0]" (0x8abac80)
     java.lang.StringBuffer@28C8CEC8/29F03C20: owner 
"HttpProcessor[8180][4]" (0x8ade480) 1 entry
Registered Monitor Dump:
     utf8 hash table: <unowned>
     JNI pinning lock: <unowned>
     JNI global reference lock: <unowned>
     BinClass lock: <unowned>
     Class linking lock: <unowned>
     System class loader lock: <unowned>
     Code rewrite lock: <unowned>
     Heap lock: owner "HttpProcessor[8180][4]" (0x8ade480) 1 entry
     Monitor cache lock: owner "Hsqldb control process" (0x9487280) 1 entry
     Dynamic loading lock: <unowned>
     Monitor IO lock: <unowned>
     User signal monitor: <unowned>
	Waiting to be notified:
	    "Signal dispatcher" (0x8096280)
     Child death monitor: <unowned>
     I/O monitor: <unowned>
     Alarm monitor: <unowned>
	Waiting to be notified:
	    <unknown thread> (0x8054280)
     Thread queue lock: owner "Hsqldb control process" (0x9487280) 1 entry
     Monitor registry: owner "Hsqldb control process" (0x9487280) 1 entry



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