More C1 crashing in JRuby

Tom Rodriguez Thomas.Rodriguez at Sun.COM
Fri Oct 10 13:55:45 PDT 2008


It's bug 6758445 and it should be visible on bugs.sun.com or the bug  
parade, though I just filed it and it might take a little while to  
show up.

By the way, looking at my description of the original problem, it  
looks almost exactly the same as what I'm seeing with this new one:

try
  if (something) throw BreakJump

  loop:
    .....

catch (BreakJump bj)
  goto loop

Maybe your workaround for this broke?

tom

On Oct 10, 2008, at 1:18 PM, Charles Oliver Nutter wrote:

> Hmm, ok...is there a publicly-viewable page I can point the user to  
> on the C1 bug? I'll see about repairing the bytecode, but I'd at  
> least like to show them it was a HotSpot issue that's been fixed  
> (and presumably will be released someday).
>
> - Charlie
>
> Tom Rodriguez wrote:
>> This looks almost the same as the other crash.  A loop is being  
>> formed with an exception handler in way we're not prepared to deal  
>> with.  The same C1 fix resolves this issue as well but I'm not sure  
>> how you should restructure the bytecodes to work around the C1  
>> bug.  I think your exception handler covers too much control flow.   
>> If the code were written in Java then you'd probably have to  
>> structure your exception handlers differently.
>> tom
>> On Oct 10, 2008, at 9:56 AM, Charles Oliver Nutter wrote:
>>> Oops, sorry about that. New DSL modem didn't have port forwarding  
>>> set up. Should be working now.
>>>
>>> Tom Rodriguez wrote:
>>>> From the error log, the crash appears to be in mark_loops which  
>>>> is the same place it was crashing before with the funny exception  
>>>> edges.  jruby.headius.com keeps timing out so I haven't been able  
>>>> to download a copy of jruby.  Once it comes back I'll see what I  
>>>> can find.
>>>> tom
>>>> On Oct 10, 2008, at 7:43 AM, Charles Oliver Nutter wrote:
>>>>> Another JRuby user reported SIGSEGV in C1 with a simple snippit  
>>>>> of Ruby code:
>>>>>
>>>>> c = 1
>>>>>
>>>>> while (true)
>>>>> flag = 0
>>>>> (1..20).each do |e|
>>>>>  flag += (c % e)
>>>>> end
>>>>> break if (flag == 0)
>>>>> c += 1
>>>>> end
>>>>> c
>>>>>
>>>>> I was able to reproduce it using Landon Fuller's Java 6 and  
>>>>> OpenJDK 7 builds on OS X, and have attached the dumps to this  
>>>>> email (8135 is Java 6, 8160 is Java 7). It did not appear to  
>>>>> crash on Apple Java 5. I've also attached the original  
>>>>> reporter's dump file (2912), from Windows XP + Java 6.
>>>>>
>>>>> As you'd expect, switching to C2 makes the problem disappear.  
>>>>> And like last time, I'm willing to make whatever changes  
>>>>> necessary to work around the problem, if possible.
>>>>>
>>>>> The JRuby bug report is here:
>>>>>
>>>>> http://jira.codehaus.org/browse/JRUBY-3049
>>>>>
>>>>> Latest JRuby nightly builds are available here (unpack, put bin/  
>>>>> in PATH, run 'jruby test.rb' where test.rb is the above script;  
>>>>> defaults to -client, pass --server to switch):
>>>>>
>>>>> http://jruby.headius.com:8080/hudson/job/jruby-dist/
>>>>>
>>>>> Do you want me to file this bug also through the usual channels?
>>>>>
>>>>> - Charlie
>>>>> #
>>>>> # A fatal error has been detected by the Java Runtime Environment:
>>>>> #
>>>>> #  SIGSEGV (0xb) at pc=0x010735c7, pid=8160, tid=2958077952
>>>>> #
>>>>> # Java VM: OpenJDK Client VM (14.0-b01 mixed mode bsd-x86 )
>>>>> # Problematic frame:
>>>>> # V  [libjvm.dylib+0x735c7]
>>>>> #
>>>>> # If you would like to submit a bug report, please visit:
>>>>> #   http://java.sun.com/webapps/bugreport/crash.jsp
>>>>> #
>>>>>
>>>>> ---------------  T H R E A D  ---------------
>>>>>
>>>>> Current thread (0x0082bc00):  JavaThread "CompilerThread0"  
>>>>> daemon [_thread_in_native, id=-1336889344,  
>>>>> stack(0xb048b000,0xb050b000)]
>>>>>
>>>>> siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR),  
>>>>> si_addr=0x46dc3668
>>>>>
>>>>> Registers:
>>>>> EAX=0x00002000, EBX=0x01073776, ECX=0x0000000d, EDX=0x26dc3680
>>>>> ESP=0xb050a520, EBP=0xb050a588, ESI=0x07fffffa, EDI=0x00000001
>>>>> EIP=0x010735c7, EFLAGS=0x00010206
>>>>>
>>>>> Top of Stack: (sp=0xb050a520)
>>>>> 0xb050a520:   007b2be0 26dc31e8 b050a568 01073425
>>>>> 0xb050a530:   b050a628 b050a668 b050a674 b050a530
>>>>> 0xb050a540:   0000000e b050a628 26e670b0 ffffffff
>>>>> 0xb050a550:   00000000 00000002 00000000 00000034
>>>>> 0xb050a560:   b050a628 26dc3680 0000021c 000000b4
>>>>> 0xb050a570:   00000018 b050a590 b050a608 b050a5a0
>>>>> 0xb050a580:   b050a674 b050a628 b050a5f8 01073906
>>>>> 0xb050a590:   00000002 26dc31f4 b050a5c8 01073906
>>>>>
>>>>> Instructions: (pc=0x010735c7)
>>>>> 0x010735b7:   10 89 ce b8 01 00 00 00 c1 ee 05 83 e1 1f d3 e0
>>>>> 0x010735c7:   8b 0c b2 09 c1 89 0c b2 90 8b 4d b0 8b 01 8b 51
>>>>>
>>>>> Stack: [0xb048b000,0xb050b000],  sp=0xb050a520,  free space=509k
>>>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,  
>>>>> C=native code)
>>>>> V  [libjvm.dylib+0x735c7]
>>>>> V  [libjvm.dylib+0x73906]
>>>>> V  [libjvm.dylib+0x73a74]
>>>>> V  [libjvm.dylib+0x56b79]
>>>>> V  [libjvm.dylib+0x5701b]
>>>>> V  [libjvm.dylib+0x571af]
>>>>> V  [libjvm.dylib+0x57440]
>>>>> V  [libjvm.dylib+0x57499]
>>>>> V  [libjvm.dylib+0x57768]
>>>>> V  [libjvm.dylib+0x13e14c]
>>>>> V  [libjvm.dylib+0x13f9f0]
>>>>> V  [libjvm.dylib+0x3ab524]
>>>>> V  [libjvm.dylib+0x3b2921]
>>>>> V  [libjvm.dylib+0x3b2a0e]
>>>>> V  [libjvm.dylib+0x3071a5]
>>>>> C  [libSystem.B.dylib+0x326f5]  _pthread_start+0x141
>>>>> C  [libSystem.B.dylib+0x325b2]  thread_start+0x22
>>>>>
>>>>>
>>>>> Current CompileTask:
>>>>> C1:  1% !   test.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/ 
>>>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/ 
>>>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275  
>>>>> bytes)
>>>>>
>>>>>
>>>>> ---------------  P R O C E S S  ---------------
>>>>>
>>>>> Java Threads: ( => current thread )
>>>>> 0x00831c00 JavaThread "Low Memory Detector" daemon  
>>>>> [_thread_blocked, id=-1335832576, stack(0xb050d000,0xb060d000)]
>>>>> =>0x0082bc00 JavaThread "CompilerThread0" daemon  
>>>>> [_thread_in_native, id=-1336889344, stack(0xb048b000,0xb050b000)]
>>>>> 0x00820800 JavaThread "Signal Dispatcher" daemon  
>>>>> [_thread_blocked, id=-1337421824, stack(0xb0389000,0xb0489000)]
>>>>> 0x0081f000 JavaThread "Finalizer" daemon [_thread_blocked,  
>>>>> id=-1338478592, stack(0xb0287000,0xb0387000)]
>>>>> 0x0081b000 JavaThread "Reference Handler" daemon  
>>>>> [_thread_blocked, id=-1339535360, stack(0xb0185000,0xb0285000)]
>>>>> 0x00800800 JavaThread "main" [_thread_in_Java, id=-1341124608,  
>>>>> stack(0xb0001000,0xb0101000)]
>>>>>
>>>>> Other Threads:
>>>>> 0x00818800 VMThread [stack: 0xb0103000,0xb0183000]  
>>>>> [id=-1340592128]
>>>>> 0x00832c00 WatcherThread [stack: 0xb060f000,0xb068f000]  
>>>>> [id=-1335300096]
>>>>>
>>>>> VM state:not at safepoint (normal execution)
>>>>>
>>>>> VM Mutex/Monitor currently owned by a thread: None
>>>>>
>>>>> Heap
>>>>> def new generation   total 960K, used 393K [0x039a0000,  
>>>>> 0x03aa0000, 0x06010000)
>>>>> eden space 896K,  43% used [0x039a0000, 0x03a02668, 0x03a80000)
>>>>> from space 64K,   0% used [0x03a90000, 0x03a900d0, 0x03aa0000)
>>>>> to   space 64K,   0% used [0x03a80000, 0x03a80000, 0x03a90000)
>>>>> tenured generation   total 4096K, used 1209K [0x06010000,  
>>>>> 0x06410000, 0x22da0000)
>>>>> the space 4096K,  29% used [0x06010000, 0x0613e400, 0x0613e400,  
>>>>> 0x06410000)
>>>>> compacting perm gen  total 12288K, used 9241K [0x22da0000,  
>>>>> 0x239a0000, 0x26da0000)
>>>>> the space 12288K,  75% used [0x22da0000, 0x236a6468, 0x236a6600,  
>>>>> 0x239a0000)
>>>>> No shared spaces configured.
>>>>>
>>>>> Dynamic libraries:
>>>>> 0x00000000     /usr/lib/libgcc_s.1.dylib
>>>>> 0x00000000     /usr/lib/libSystem.B.dylib
>>>>> 0x00000000     /usr/lib/system/libmathCommon.A.dylib
>>>>> 0x01000000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/client/libjvm.dylib
>>>>> 0x00000000     /usr/lib/libstdc++.6.dylib
>>>>> 0x0001e000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/native_threads/libhpi.dylib
>>>>> 0x00031000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/libverify.dylib
>>>>> 0x00040000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/libjava.dylib
>>>>> 0x00067000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/libzip.dylib
>>>>> 0x0075c000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/lib/i386/libmanagement.dylib
>>>>> 0x26e6d000     /private/var/tmp/jna57777.tmp
>>>>> 0x26e85000     /System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/A/JavaVM
>>>>> 0x00000000     /System/Library/Frameworks/Foundation.framework/ 
>>>>> Versions/C/Foundation
>>>>> 0x00000000     /usr/lib/libobjc.A.dylib
>>>>> 0x00000000     /System/Library/Frameworks/ 
>>>>> CoreFoundation.framework/Versions/A/CoreFoundation
>>>>> 0x00000000     /usr/lib/libicucore.A.dylib
>>>>> 0x00000000     /usr/lib/libxml2.2.dylib
>>>>> 0x00000000     /usr/lib/libz.1.dylib
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
>>>>> 0x00000000     /System/Library/Frameworks/ 
>>>>> SystemConfiguration.framework/Versions/A/SystemConfiguration
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/CoreServices
>>>>> 0x00000000     /System/Library/Frameworks/Security.framework/ 
>>>>> Versions/A/Security
>>>>> 0x00000000     /usr/lib/libauto.dylib
>>>>> 0x00000000     /usr/lib/libsqlite3.0.dylib
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/AE.framework/Versions/A/AE
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/LaunchServices.framework/Versions/A/ 
>>>>> LaunchServices
>>>>> 0x00000000     /System/Library/Frameworks/CoreServices.framework/ 
>>>>> Versions/A/Frameworks/DictionaryServices.framework/Versions/A/ 
>>>>> DictionaryServices
>>>>> 0x00000000     /System/Library/Frameworks/IOKit.framework/ 
>>>>> Versions/A/IOKit
>>>>> 0x00000000     /System/Library/Frameworks/ 
>>>>> DiskArbitration.framework/Versions/A/DiskArbitration
>>>>> 0x00000000     /usr/lib/libbsm.dylib
>>>>> 0x00000000     /usr/lib/libxslt.1.dylib
>>>>>
>>>>> VM Arguments:
>>>>> jvm_args: -Djruby.memory.max=500m -Djruby.stack.max=1024k - 
>>>>> Xmx500m -Xss1024k -Xbootclasspath/a:/Users/headius/projects/ 
>>>>> jruby/lib/jruby.jar -Djruby.home=/Users/headius/projects/jruby - 
>>>>> Djruby.lib=/Users/headius/projects/jruby/lib - 
>>>>> Djruby.script=jruby -Djruby.shell=/bin/sh
>>>>> java_command: org.jruby.Main test.rb
>>>>> Launcher Type: SUN_STANDARD
>>>>>
>>>>> Environment Variables:
>>>>> JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/ 
>>>>> openjdk7/Home
>>>>> PATH=/System/Library/Frameworks/JavaVM.framework/Versions/ 
>>>>> openjdk7/Home/bin:/Users/headius/projects/jruby/bin:/bin:/sbin:/ 
>>>>> usr/bin:/usr/sbin:/opt/local/bin:/opt/local/sbin
>>>>> SHELL=/bin/bash
>>>>> DISPLAY=/tmp/launch-L2Owkb/:0
>>>>> DYLD_FALLBACK_LIBRARY_PATH=/System/Library/Frameworks/ 
>>>>> JavaVM.framework/Versions/openjdk7/Home/jre/lib/i386/client:/ 
>>>>> System/Library/Frameworks/JavaVM.framework/Versions/openjdk7/ 
>>>>> Home/jre/lib/i386:/System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/openjdk7/Home/jre/../lib/i386
>>>>>
>>>>> Signal Handlers:
>>>>> SIGSEGV: [libjvm.dylib+0x3ee290], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGBUS: [libjvm.dylib+0x3ee290], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGFPE: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGPIPE: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGXFSZ: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGILL: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGUSR1: SIG_DFL, sa_mask[0]=0x63807efb, sa_flags=0x00000000
>>>>> SIGUSR2: [libjvm.dylib+0x3043c0], sa_mask[0]=0x00000000,  
>>>>> sa_flags=0x00000042
>>>>> SIGHUP: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGINT: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGTERM: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGQUIT: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>>
>>>>>
>>>>> ---------------  S Y S T E M  ---------------
>>>>>
>>>>> OS:Bsd
>>>>> uname:Darwin 9.5.0 Darwin Kernel Version 9.5.0: Wed Sep  3  
>>>>> 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386 i386
>>>>> rlimit: STACK 8192k, CORE 0k, NPROC 266, NOFILE 10240
>>>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model  
>>>>> 14 stepping 8, cmov, cx8, fxsr, mmx, sse, sse2, sse3
>>>>>
>>>>> Memory: 4k page, physical 1853232k(463308k free)
>>>>>
>>>>> vm_info: OpenJDK Client VM (14.0-b01) for bsd-x86 JRE (1.7.0- 
>>>>> internal-landonf_2008_08_20_14_13-b00), built on Aug 20 2008  
>>>>> 14:25:37 by "landonf" with gcc 4.0.1 (Apple Inc. build 5484)
>>>>>
>>>>> time: Fri Oct 10 09:23:14 2008
>>>>> elapsed time: 3 seconds
>>>>>
>>>>> #
>>>>> # An unexpected error has been detected by Java Runtime  
>>>>> Environment:
>>>>> #
>>>>> #  SIGSEGV (0xb) at pc=0x0106dea7, pid=8135, tid=0xb050b000
>>>>> #
>>>>> # Java VM: Java HotSpot(TM) Client VM (1.6.0_03-p3- 
>>>>> landonf_05_dec_2007_22_04-b00 mixed mode)
>>>>> # Problematic frame:
>>>>> # V  [libjvm.dylib+0x6dea7]
>>>>> #
>>>>> # Please submit bug reports to landonf at bikemonkey.org
>>>>> #
>>>>>
>>>>> ---------------  T H R E A D  ---------------
>>>>>
>>>>> Current thread (0x0082a400):  JavaThread "CompilerThread0"  
>>>>> daemon [_thread_in_native, id=-1336889344]
>>>>>
>>>>> siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x46dda7c8
>>>>>
>>>>> Registers:
>>>>> EAX=0x00002000, EBX=0x0106e056, ECX=0x0000000d, EDX=0x26dda7e0
>>>>> ESP=0xb050a580, EBP=0xb050a5e8, ESI=0x07fffffa, EDI=0x00000001
>>>>> EIP=0x0106dea7, EFLAGS=0x00010206
>>>>>
>>>>> Top of Stack: (sp=0xb050a580)
>>>>> 0xb050a580:   26decd90 26dda348 b050a5c8 0106dd05
>>>>> 0xb050a590:   b050a688 b050a6c8 b050a6d4 b050a590
>>>>> 0xb050a5a0:   0000000e b050a688 26dd62d8 ffffffff
>>>>> 0xb050a5b0:   00000000 00000002 00000000 00000034
>>>>> 0xb050a5c0:   b050a688 26dda7e0 0000021c 000000b4
>>>>> 0xb050a5d0:   00000018 b050a5f0 b050a668 b050a600
>>>>> 0xb050a5e0:   b050a6d4 b050a688 b050a658 0106e1e6
>>>>> 0xb050a5f0:   00000002 26dda354 b050a628 0106e1e6
>>>>>
>>>>> Instructions: (pc=0x0106dea7)
>>>>> 0x0106de97:   10 89 ce b8 01 00 00 00 c1 ee 05 83 e1 1f d3 e0
>>>>> 0x0106dea7:   8b 0c b2 09 c1 89 0c b2 90 8b 4d b0 8b 01 8b 51
>>>>>
>>>>> Stack: [0xb048b000,0xb050b000),  sp=0xb050a580,  free space=509k
>>>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,  
>>>>> C=native code)
>>>>> V  [libjvm.dylib+0x6dea7]
>>>>> V  [libjvm.dylib+0x6e1e6]
>>>>> V  [libjvm.dylib+0x6e354]
>>>>> V  [libjvm.dylib+0x51589]
>>>>> V  [libjvm.dylib+0x51a2b]
>>>>> V  [libjvm.dylib+0x51bbf]
>>>>> V  [libjvm.dylib+0x51e72]
>>>>> V  [libjvm.dylib+0x51ed9]
>>>>> V  [libjvm.dylib+0x5215f]
>>>>> V  [libjvm.dylib+0x125019]
>>>>> V  [libjvm.dylib+0x126940]
>>>>> V  [libjvm.dylib+0x3809d4]
>>>>> V  [libjvm.dylib+0x389361]
>>>>> V  [libjvm.dylib+0x38944e]
>>>>> V  [libjvm.dylib+0x2f3bb2]
>>>>> C  [libSystem.B.dylib+0x326f5]  _pthread_start+0x141
>>>>> C  [libSystem.B.dylib+0x325b2]  thread_start+0x22
>>>>>
>>>>>
>>>>> Current CompileTask:
>>>>> C1:  1% !   test.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/ 
>>>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/ 
>>>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275  
>>>>> bytes)
>>>>>
>>>>>
>>>>> ---------------  P R O C E S S  ---------------
>>>>>
>>>>> Java Threads: ( => current thread )
>>>>> 0x0082fc00 JavaThread "Low Memory Detector" daemon  
>>>>> [_thread_blocked, id=-1335832576]
>>>>> =>0x0082a400 JavaThread "CompilerThread0" daemon  
>>>>> [_thread_in_native, id=-1336889344]
>>>>> 0x0081ec00 JavaThread "Signal Dispatcher" daemon  
>>>>> [_thread_blocked, id=-1337421824]
>>>>> 0x0081d800 JavaThread "Finalizer" daemon [_thread_blocked,  
>>>>> id=-1338478592]
>>>>> 0x00819400 JavaThread "Reference Handler" daemon  
>>>>> [_thread_blocked, id=-1339535360]
>>>>> 0x00800800 JavaThread "main" [_thread_in_Java, id=-1341124608]
>>>>>
>>>>> Other Threads:
>>>>> 0x00816c00 VMThread [id=-1340592128]
>>>>> 0x00830800 WatcherThread [id=-1335300096]
>>>>>
>>>>> VM state:not at safepoint (normal execution)
>>>>>
>>>>> VM Mutex/Monitor currently owned by a thread: None
>>>>>
>>>>> Heap
>>>>> def new generation   total 960K, used 749K [0x03960000,  
>>>>> 0x03a60000, 0x05fd0000)
>>>>> eden space 896K,  89% used [0x03960000, 0x03a2e2b8, 0x03a40000)
>>>>> from space 64K,   0% used [0x03a50000, 0x03a500e0, 0x03a60000)
>>>>> to   space 64K,   0% used [0x03a40000, 0x03a40000, 0x03a50000)
>>>>> tenured generation   total 4096K, used 1024K [0x05fd0000,  
>>>>> 0x063d0000, 0x22d60000)
>>>>> the space 4096K,  25% used [0x05fd0000, 0x060d0250, 0x060d0400,  
>>>>> 0x063d0000)
>>>>> compacting perm gen  total 12288K, used 8930K [0x22d60000,  
>>>>> 0x23960000, 0x26d60000)
>>>>> the space 12288K,  72% used [0x22d60000, 0x23618930, 0x23618a00,  
>>>>> 0x23960000)
>>>>> No shared spaces configured.
>>>>>
>>>>> Dynamic libraries:
>>>>> Error: Cannot print dynamic libraries.
>>>>>
>>>>> VM Arguments:
>>>>> jvm_args: -Djruby.memory.max=500m -Djruby.stack.max=1024k - 
>>>>> Xmx500m -Xss1024k -Xbootclasspath/a:/Users/headius/projects/ 
>>>>> jruby/lib/jruby.jar -Djruby.home=/Users/headius/projects/jruby - 
>>>>> Djruby.lib=/Users/headius/projects/jruby/lib - 
>>>>> Djruby.script=jruby -Djruby.shell=/bin/sh
>>>>> java_command: org.jruby.Main test.rb
>>>>> Launcher Type: SUN_STANDARD
>>>>>
>>>>> Environment Variables:
>>>>> JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/ 
>>>>> soylatte/Home
>>>>> PATH=/System/Library/Frameworks/JavaVM.framework/Versions/ 
>>>>> soylatte/Home/bin:/Users/headius/projects/jruby/bin:/bin:/sbin:/ 
>>>>> usr/bin:/usr/sbin:/opt/local/bin:/opt/local/sbin
>>>>> SHELL=/bin/bash
>>>>> DISPLAY=/tmp/launch-L2Owkb/:0
>>>>> DYLD_FALLBACK_LIBRARY_PATH=/System/Library/Frameworks/ 
>>>>> JavaVM.framework/Versions/soylatte/Home/jre/lib/i386/client:/ 
>>>>> System/Library/Frameworks/JavaVM.framework/Versions/soylatte/ 
>>>>> Home/jre/lib/i386:/System/Library/Frameworks/JavaVM.framework/ 
>>>>> Versions/soylatte/Home/jre/../lib/i386
>>>>>
>>>>> Signal Handlers:
>>>>> SIGSEGV: [libjvm.dylib+0x3bfb80], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGBUS: [libjvm.dylib+0x3bfb80], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGFPE: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGPIPE: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGILL: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGUSR1: SIG_DFL, sa_mask[0]=0x63807efb, sa_flags=0x00000000
>>>>> SIGUSR2: [libjvm.dylib+0x2f06d0], sa_mask[0]=0x00000000,  
>>>>> sa_flags=0x00000042
>>>>> SIGHUP: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGINT: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGQUIT: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGTERM: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,  
>>>>> sa_flags=0x00000042
>>>>> SIGUSR2: [libjvm.dylib+0x2f06d0], sa_mask[0]=0x00000000,  
>>>>> sa_flags=0x00000042
>>>>>
>>>>>
>>>>> ---------------  S Y S T E M  ---------------
>>>>>
>>>>> OS:Bsd
>>>>> uname:Darwin 9.5.0 Darwin Kernel Version 9.5.0: Wed Sep  3  
>>>>> 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386 i386
>>>>> rlimit: STACK 8192k, CORE 0k, NPROC 266, NOFILE 10240
>>>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model  
>>>>> 14 stepping 8, cmov, cx8, fxsr, mmx, sse, sse2, sse3
>>>>>
>>>>> Memory: 4k page, physical 1853252k(463313k free)
>>>>>
>>>>> vm_info: Java HotSpot(TM) Client VM (1.6.0_03-p3- 
>>>>> landonf_05_dec_2007_22_04-b00) for bsd-x86, built on Dec  5 2007  
>>>>> 22:13:24 by "landonf" with gcc 4.0.1 (Apple Inc. build 5465)
>>>>>
>>>>> #
>>>>> # An unexpected error has been detected by Java Runtime  
>>>>> Environment:
>>>>> #
>>>>> #  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d8a0242,  
>>>>> pid=2912, tid=2772
>>>>> #
>>>>> # Java VM: Java HotSpot(TM) Client VM (1.6.0_02-b06 mixed mode,  
>>>>> sharing)
>>>>> # Problematic frame:
>>>>> # V  [jvm.dll+0x30242]
>>>>> #
>>>>> # If you would like to submit a bug report, please visit:
>>>>> #   http://java.sun.com/webapps/bugreport/crash.jsp
>>>>> #
>>>>>
>>>>> ---------------  T H R E A D  ---------------
>>>>>
>>>>> Current thread (0x02cc8800):  JavaThread "CompilerThread0"  
>>>>> daemon [_thread_in_native, id=2772]
>>>>>
>>>>> siginfo: ExceptionCode=0xc0000005, writing address 0x23392810
>>>>>
>>>>> Registers:
>>>>> EAX=0x23392810, EBX=0x0323f8b8, ECX=0x0000000d, EDX=0x00002000
>>>>> ESP=0x0323f828, EBP=0xffffffff, ESI=0x0323f8c4, EDI=0x02cdc4f0
>>>>> EIP=0x6d8a0242, EFLAGS=0x00010216
>>>>>
>>>>> Top of Stack: (sp=0x0323f828)
>>>>> 0x0323f828:   0323f878 03390798 0323f894 00000000
>>>>> 0x0323f838:   02d79098 0000000d 0323f878 02d7f2d0
>>>>> 0x0323f848:   0323f894 03392828 0000021c 000000b4
>>>>> 0x0323f858:   6d8a0407 02ce0f5c 02cdbd28 0323fa58
>>>>> 0x0323f868:   00000000 6d8a0456 03390798 0323fa1c
>>>>> 0x0323f878:   000000b4 00000029 00000003 03392200
>>>>> 0x0323f888:   00000000 03392490 000000b4 033924a8
>>>>> 0x0323f898:   000000b4 033924c0 000000b4 000000b4
>>>>>
>>>>> Instructions: (pc=0x6d8a0242)
>>>>> 0x6d8a0232:   c1 ea 05 8d 04 90 83 e1 1f ba 01 00 00 00 d3 e2
>>>>> 0x6d8a0242:   09 10 8b 16 8b 4e 04 4a 8b c2 89 16 8b 04 81 3b
>>>>>
>>>>>
>>>>> Stack: [0x031f0000,0x03240000),  sp=0x0323f828,  free space=318k
>>>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,  
>>>>> C=native code)
>>>>> V  [jvm.dll+0x30242]
>>>>>
>>>>>
>>>>> Current CompileTask:
>>>>> C1:  1% !   problem5.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/ 
>>>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/ 
>>>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275  
>>>>> bytes)
>>>>>
>>>>>
>>>>> ---------------  P R O C E S S  ---------------
>>>>>
>>>>> Java Threads: ( => current thread )
>>>>> 0x02ccd400 JavaThread "Low Memory Detector" daemon  
>>>>> [_thread_blocked, id=1860]
>>>>> =>0x02cc8800 JavaThread "CompilerThread0" daemon  
>>>>> [_thread_in_native, id=2772]
>>>>> 0x02cc7800 JavaThread "Attach Listener" daemon [_thread_blocked,  
>>>>> id=4088]
>>>>> 0x02cc6800 JavaThread "Signal Dispatcher" daemon  
>>>>> [_thread_blocked, id=644]
>>>>> 0x02cc2000 JavaThread "Finalizer" daemon [_thread_blocked,  
>>>>> id=3164]
>>>>> 0x02cbdc00 JavaThread "Reference Handler" daemon  
>>>>> [_thread_blocked, id=1448]
>>>>> 0x002a6c00 JavaThread "main" [_thread_in_Java, id=3660]
>>>>>
>>>>> Other Threads:
>>>>> 0x02cb4800 VMThread [id=3140]
>>>>> 0x02cd7c00 WatcherThread [id=2952]
>>>>>
>>>>> VM state:not at safepoint (normal execution)
>>>>>
>>>>> VM Mutex/Monitor currently owned by a thread: None
>>>>>
>>>>> Heap
>>>>> def new generation   total 960K, used 804K [0x07560000,  
>>>>> 0x07660000, 0x09bd0000)
>>>>> eden space 896K,  89% used [0x07560000, 0x07629260, 0x07640000)
>>>>> from space 64K,   0% used [0x07640000, 0x076400e0, 0x07650000)
>>>>> to   space 64K,   0% used [0x07650000, 0x07650000, 0x07660000)
>>>>> tenured generation   total 4096K, used 1042K [0x09bd0000,  
>>>>> 0x09fd0000, 0x26960000)
>>>>> the space 4096K,  25% used [0x09bd0000, 0x09cd4bc0, 0x09cd4c00,  
>>>>> 0x09fd0000)
>>>>> compacting perm gen  total 12288K, used 6611K [0x26960000,  
>>>>> 0x27560000, 0x2a960000)
>>>>> the space 12288K,  53% used [0x26960000, 0x26fd4f58, 0x26fd5000,  
>>>>> 0x27560000)
>>>>>  ro space 8192K,  66% used [0x2a960000, 0x2aead978, 0x2aeada00,  
>>>>> 0x2b160000)
>>>>>  rw space 12288K,  52% used [0x2b160000, 0x2b7a9cb8, 0x2b7a9e00,  
>>>>> 0x2bd60000)
>>>>>
>>>>> Dynamic libraries:
>>>>> 0x00400000 - 0x00423000     C:\Program Files\Java\jdk1.6.0_02\bin 
>>>>> \java.exe
>>>>> 0x7c900000 - 0x7c9af000     C:\WINDOWS\system32\ntdll.dll
>>>>> 0x7c800000 - 0x7c8f6000     C:\WINDOWS\system32\kernel32.dll
>>>>> 0x77dd0000 - 0x77e6b000     C:\WINDOWS\system32\ADVAPI32.dll
>>>>> 0x77e70000 - 0x77f02000     C:\WINDOWS\system32\RPCRT4.dll
>>>>> 0x77fe0000 - 0x77ff1000     C:\WINDOWS\system32\Secur32.dll
>>>>> 0x7c340000 - 0x7c396000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\msvcr71.dll
>>>>> 0x6d870000 - 0x6dab9000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\client\jvm.dll
>>>>> 0x7e410000 - 0x7e4a1000     C:\WINDOWS\system32\USER32.dll
>>>>> 0x77f10000 - 0x77f59000     C:\WINDOWS\system32\GDI32.dll
>>>>> 0x76b40000 - 0x76b6d000     C:\WINDOWS\system32\WINMM.dll
>>>>> 0x6d3c0000 - 0x6d3c8000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\hpi.dll
>>>>> 0x76bf0000 - 0x76bfb000     C:\WINDOWS\system32\PSAPI.DLL
>>>>> 0x6d820000 - 0x6d82c000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\verify.dll
>>>>> 0x6d460000 - 0x6d47f000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\java.dll
>>>>> 0x6d860000 - 0x6d86f000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\zip.dll
>>>>> 0x6d610000 - 0x6d619000     C:\Program Files\Java\jdk1.6.0_02\jre 
>>>>> \bin\management.dll
>>>>> 0x03590000 - 0x035e2000     C:\Documents and Settings 
>>>>> \Administrator\Local Settings\Temp\jna25444.tmp
>>>>> 0x77c10000 - 0x77c68000     C:\WINDOWS\system32\msvcrt.dll
>>>>>
>>>>> VM Arguments:
>>>>> jvm_args: -Xmx500m -Xss1024k -Xbootclasspath/a:C:\JRuby\HEAD\bin 
>>>>> \..\lib\jruby.jar -Djruby.home=C:\JRuby\HEAD\bin\.. - 
>>>>> Djruby.lib=C:\JRuby\HEAD\bin\..\lib -Djruby.shell=cmd.exe - 
>>>>> Djruby.script=jruby.bat
>>>>> java_command: org.jruby.Main problem5.rb
>>>>> Launcher Type: SUN_STANDARD
>>>>>
>>>>> Environment Variables:
>>>>> JAVA_HOME=C:\Program Files\Java\jdk1.6.0_02
>>>>> PATH=C:\PHP\;C:\Program Files\MiKTeX 2.6\miktex\bin;c:\program  
>>>>> files\imagemagick-6.3.8-q8;c:\program files\imagemagick-6.3.0- 
>>>>> q8;C:\Perl\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS 
>>>>> \System32\Wbem;C:\Program Files\cvsnt;C:\Program Files\Java 
>>>>> \jdk1.6.0_02\bin;C:\ant\apache-ant-1.7.0\bin;;C:\UnxUtils\usr 
>>>>> \local\wbin;C:\JRuby\HEAD\bin;C:\Program Files\MySQL\MySQL  
>>>>> Server 5.0\bin;C:\Program Files\Graphviz2.20\Bin;C:\Program Files 
>>>>> \Nmap;C:\Program Files\ImageMagick-6.3.0-Q8;C:\Program Files\gs 
>>>>> \gs8.54\bin;C:\Program Files\gs\gs8.54\lib
>>>>> USERNAME=Administrator
>>>>> OS=Windows_NT
>>>>> PROCESSOR_IDENTIFIER=x86 Family 15 Model 67 Stepping 3,  
>>>>> AuthenticAMD
>>>>>
>>>>>
>>>>>
>>>>> ---------------  S Y S T E M  ---------------
>>>>>
>>>>> OS: Windows XP Build 2600 Service Pack 3
>>>>>
>>>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 15  
>>>>> model 67 stepping 3, cmov, cx8, fxsr, mmx, sse, sse2, sse3,  
>>>>> mmxext, 3dnow, 3dnowext
>>>>>
>>>>> Memory: 4k page, physical 2096492k(1248704k free), swap  
>>>>> 4034788k(3334524k free)
>>>>>
>>>>> vm_info: Java HotSpot(TM) Client VM (1.6.0_02-b06) for windows- 
>>>>> x86, built on Jul 12 2007 01:16:14 by "java_re" with unknown MS  
>>>>> VC++:1310
>>>>>
>>>
>




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