Re: [Sablevm-developer] sablevm hang
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Re: [Sablevm-developer] sablevm hang
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From: Chris P. <chr...@ma...> - 2004-06-17 16:32:32
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Hi Joe,
It's obviously a deadlock somewhere, which means a concurrency /
threading bug. It could either be in Classpath or in our locking code.
AWT is not really something I know about. Greg recently implemented
InterruptedException IIRC, and that could be it as well.
Can you reproduce the problem without AWT? Is that really the absolute
simplest test case you can give us? What happens if you declare the
Thread body as a named class? Does it happen every single time?
Cheers,
Chris
Joseph Paris wrote:
> Were you able to make any progress on figuring out what the problem is?
> If there is anything more you need from me, please don't hesitate to ask.
>
> --Joe
>
> On Mon, 14 Jun 2004, Joseph Paris wrote:
>
>
>>no problem. Here it is:
>>
>>(VMObject.java:-1) java/lang/VMObject.wait n
>>(Object.java:431) java/lang/Object.wait
>>(GtkMainThread.java:63) gnu/java/awt/peer/gtk/GtkMainThread.<init>
>>(GtkToolkit.java:108) gnu/java/awt/peer/gtk/GtkToolkit.<init>
>>(Constructor.java:-1) java/lang/reflect/Constructor.constructNative n
>>(Constructor.java:408) java/lang/reflect/Constructor.newInstance
>>(Class.java:1496) java/lang/Class.newInstance
>>(Toolkit.java:522) java/awt/Toolkit.getDefaultToolkit
>>(Component.java:695) java/awt/Component.getToolkit
>>(Container.java:374) java/awt/Container.addImpl
>>(Container.java:268) java/awt/Container.add
>>(ConfigDialog.java:329)
>>net/jxta/impl/peergroup/ConfigDialog$PagesPanel.<init>
>>(ConfigDialog.java:375) net/jxta/impl/peergroup/ConfigDialog.<init>
>>(DefaultConfigurator.java:139)
>>net/jxta/impl/peergroup/DefaultConfigurator.<init>
>>(DefaultConfigurator.java:126)
>>net/jxta/impl/peergroup/DefaultConfigurator.<init>
>>(Constructor.java:-1) java/lang/reflect/Constructor.constructNative n
>>(Constructor.java:408) java/lang/reflect/Constructor.newInstance
>>(Class.java:1496) java/lang/Class.newInstance
>>(Platform.java:202)
>>net/jxta/impl/peergroup/Platform.generateConfigAdvertisement
>>(Platform.java:161) net/jxta/impl/peergroup/Platform.initFirst
>>(GenericPeerGroup.java:784) net/jxta/impl/peergroup/GenericPeerGroup.init
>>(PeerGroupFactory.java:369)
>>net/jxta/peergroup/PeerGroupFactory.newPlatform
>>(PeerGroupFactory.java:420)
>>net/jxta/peergroup/PeerGroupFactory.newNetPeerGroup
>>(Server.java:116) Server.startJxta
>>(Server.java:108) Server.main
>>(VirtualMachine.java:-1) java/lang/VirtualMachine.invokeMain n
>>(VirtualMachine.java:92) java/lang/VirtualMachine.main
>>
>>
>>Thanks,
>>Joe
>>
>>
>>On Mon, 14 Jun 2004, Etienne Gagnon wrote:
>>
>>
>>>Hi Joe,
>>>
>>>Could you also type Ctrl-\ [e.g. SIGQUIT], when it hangs? This would
>>>dump the Java stack trace.
>>>
>>>Etienne
>>>
>>>Joseph Paris wrote:
>>>
>>>>Heya,
>>>>
>>>>I'm running into an issue were the sablevm seems to be hanging on what i
>>>>think is a threading related issue. I've narrowed down where in code
>>>>the hang occurs, but i'm not sure _why_ it occurs. I'm providing the
>>>>class and instantiation along with a portion of strace output. if more
>>>>strace output would help, please let me know.
>>>>
>>>>Any help would be greatly appreciated.
>>>>
>>>>System config:
>>>>Suse 9.1 updated; x86
>>>>
>>>>Thanks,
>>>>Joe
>>>>
>>>>------AwtUtils.java from the JXTA distribution-----
>>>>****Executed as AwtUtils.initAsDaemon()****
>>>>
>>>>
>>>>import java.awt.Frame;
>>>>
>>>>public class AwtUtils {
>>>>
>>>> public static void initAsDaemon() {
>>>> (new Thread() {
>>>> public void run() {
>>>> try {
>>>> Frame f = new Frame();
>>>> f.dispose();
>>>> } catch (Throwable t) {
>>>> }
>>>> }
>>>> public void doit() {
>>>> setDaemon(true);
>>>> setName("awt daemon initializer");
>>>> start();
>>>> try {
>>>> join();
>>>> } catch (InterruptedException ie) {
>>>> }
>>>> }
>>>> }).doit();
>>>> }
>>>>}
>>>>
>>>>
>>>>-------------------Strace output---------------------
>>>>
>>>>open("/usr/local/lib/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such
>>>>file or directory)
>>>>open("tls/i686/sse2/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such
>>>>file ordirectory)
>>>>open("tls/i686/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("tls/sse2/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("tls/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("i686/sse2/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No
>>>>such file or directory)
>>>>open("i686/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("sse2/libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("libfontconfig.so.1", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("/usr/lib/libfontconfig.so.1", O_RDONLY) = 13
>>>>read(13, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300\223"...,
>>>>512) = 512
>>>>fstat64(13, {st_mode=S_IFREG|0755, st_size=204755, ...}) = 0
>>>>old_mmap(NULL, 170408, PROT_READ|PROT_EXEC, MAP_PRIVATE, 13, 0) =
>>>>0x41f97000
>>>>madvise(0x41f97000, 170408, MADV_SEQUENTIAL|0x1) = 0
>>>>old_mmap(0x41fbc000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
>>>>13, 0x25000) = 0x41fbc000
>>>>old_mmap(0x41fc0000, 2472, PROT_READ|PROT_WRITE,
>>>>MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x41fc0000
>>>>close(13) = 0
>>>>open("/usr/local/lib/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such
>>>>file or d irectory)
>>>>open("tls/i686/sse2/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file
>>>>or directory)
>>>>open("tls/i686/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("tls/sse2/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("tls/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("i686/sse2/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No
>>>>such file or directory)
>>>>open("i686/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("sse2/libfreetype.so.6", O_RDONLY) = -1 ENOENT (No such
>>>>file or directory)open("libfreetype.so.6", O_RDONLY) = -1 ENOENT (No
>>>>such file or directory)open("/usr/lib/libfreetype.so.6", O_RDONLY) = 13
>>>>read(13, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\360\346"...,
>>>>512) = 512
>>>>fstat64(13, {st_mode=S_IFREG|0755, st_size=473346, ...}) = 0
>>>>old_mmap(NULL, 429584, PROT_READ|PROT_EXEC, MAP_PRIVATE, 13, 0) =
>>>>0x41fc1000
>>>>madvise(0x41fc1000, 429584, MADV_SEQUENTIAL|0x1) = 0
>>>>old_mmap(0x42023000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
>>>>13, 0x62000) = 0x42023000
>>>>close(13) = 0
>>>>open("/usr/local/lib/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such file
>>>>or directory)
>>>>open("tls/i686/sse2/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)
>>>>open("tls/i686/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("tls/sse2/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such
>>>>file or directory)open("tls/libexpat.so.0", O_RDONLY) = -1 ENOENT (No
>>>>such file or directory)open("i686/sse2/libexpat.so.0", O_RDONLY) = -1
>>>>ENOENT (No such file or directory)
>>>>open("i686/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such file or
>>>>directory)open("sse2/libexpat.so.0", O_RDONLY) = -1 ENOENT (No such
>>>>file or directory)open("libexpat.so.0", O_RDONLY) = -1 ENOENT (No
>>>>such file or directory)open("/usr/lib/libexpat.so.0", O_RDONLY) = 13
>>>>read(13, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0P!\0\000"...,
>>>>512) = 512
>>>>fstat64(13, {st_mode=S_IFREG|0755, st_size=160096, ...}) = 0
>>>>old_mmap(NULL, 124104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 13, 0) =
>>>>0x4202a000
>>>>madvise(0x4202a000, 124104, MADV_SEQUENTIAL|0x1) = 0
>>>>old_mmap(0x42046000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
>>>>13, 0x1c000) = 0x42046000
>>>>close(13) = 0
>>>>munmap(0x41a40000, 122337) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>write(1, "[verbose class: loading \"java/be"..., 60[verbose class: loading
>>>>"java/beans/PropertyChangeSupport"]
>>>>) = 60
>>>>open("/home/paris/software/sablevm//share/sablevm/sablevm-classpath/java/beans/PropertyChangeSupport.class",
>>>>O_RDONLY) = 13
>>>>fstat64(13, {st_mode=S_IFREG|0644, st_size=5035, ...}) = 0
>>>>mmap2(NULL, 5035, PROT_READ, MAP_PRIVATE, 13, 0) = 0x41a40000
>>>>munmap(0x41a40000, 5035) = 0
>>>>close(13) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>write(1, "[verbose class: loading \"gnu/jav"..., 63[verbose class: loading
>>>>"gnu/java/awt/peer/gtk/GtkMainThread"]
>>>>) = 63
>>>>open("/home/paris/software/sablevm//share/sablevm/sablevm-classpath/gnu/java/awt/peer/gtk/GtkMainThread.class",
>>>>O_RDONLY) = 13
>>>>fstat64(13, {st_mode=S_IFREG|0644, st_size=1021, ...}) = 0
>>>>mmap2(NULL, 1021, PROT_READ, MAP_PRIVATE, 13, 0) = 0x41a40000
>>>>munmap(0x41a40000, 1021) = 0
>>>>close(13) = 0
>>>>write(1, "[verbose class: loading \"gnu/jav"..., 64[verbose class: loading
>>>>"gnu/java/awt/peer/gtk/GtkGenericPeer"]
>>>>) = 64
>>>>open("/home/paris/software/sablevm//share/sablevm/sablevm-classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.class",
>>>>O_RDONLY) = 13
>>>>fstat64(13, {st_mode=S_IFREG|0644, st_size=1045, ...}) = 0
>>>>mmap2(NULL, 1045, PROT_READ, MAP_PRIVATE, 13, 0) = 0x41a40000
>>>>munmap(0x41a40000, 1045) = 0
>>>>close(13) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
>>>>brk(0) = 0x8093000
>>>>brk(0x80b9000) = 0x80b9000
>>>>mmap2(NULL, 2101248, PROT_READ|PROT_WRITE|PROT_EXEC,
>>>>MAP_PRIVATE|MAP_ANONYMOUS,-1, 0) = 0x42049000
>>>>mprotect(0x42049000, 4096, PROT_NONE) = 0
>>>>clone(child_stack=0x42249b08,
>>>>flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
>>>>parent_tidptr=0x42249bf8, {entry_number:6, base_addr:0x42249bb0,
>>>>limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
>>>>limit_in_pages:1, seg_not_present:0, useable:1}, child_tidptr=0x42249bf8)
>>>>= 6137
>>>>futex(0x8072e00, FUTEX_WAIT, 0, NULL <unfinished ...>
>>>>
>>>>
>>>>
>>>>-------------------------------------------------------
>>>>This SF.Net email is sponsored by The 2004 JavaOne(SM) Conference
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>>>>
>>>>
>>>
>>>--
>>>Etienne M. Gagnon, Ph.D. http://www.info.uqam.ca/~egagnon/
>>>SableVM: http://www.sablevm.org/
>>>SableCC: http://www.sablecc.org/
>>>
>>>
>>
>
>
> -------------------------------------------------------
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