openjdk team mailing list archive

[Hector Oron <zumbi@xxxxxxxxxx>]

Hello,


On Wed, Oct 15, 2014 at 10:06:46PM +0800, Andrew Lee wrote:
> Package: qdox
> Version: 1.12-1
[...]
> package:
>      [java] Reading skeleton file "src/grammar/skeleton.inner".
>      [java] Reading "src/grammar/lexer.flex"
>      [java] 
>      [java] Warning : Macro "CommentChar" has been declared but never used.
>      [java] Constructing NFA : 1,071 states in NFA
>      [java] Converting NFA to DFA : 
>      [java] .........................................................................................................................................................................................................................................................................................................................................................................................................................................................................
>      [java] 491 states before minimization, 384 states in minimized DFA
>      [java] Writing code to "build/generated-sources/com/thoughtworks/qdox/parser/impl/JFlexLexer.java"
> 
> [..hangs forever...]

  Using openjdk-7-jre 7u65-2.5.2-4, (but works using openjdk-7-jre 7u55-2.4.7-1)

  Aparently, java hangs waiting for a thread, as shown in a backtrace:

  #0  0xb6fc1534 in __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0
  #1  0xb6fbae2a in pthread_join () from /lib/arm-linux-gnueabihf/libpthread.so.0
  #2  0xb6f9fa3c in ?? () from /usr/lib/jvm/java-7-openjdk-armhf/jre/bin/../lib/arm/jli/libjli.so
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  Java stack for given process:

  zumbi     3813 99.7  0.5 666200 21488 pts/15   Sl+  12:47   1:30  |           \_ /usr/lib/jvm/java-7-openjdk-armhf/jre/bin/java -classpath /usr/share/java/JFlex.jar JFlex.Main -d build/generated-sources/com/thoughtworks/qdox/parser/impl --skel src/grammar/skeleton.inner src/grammar/lexer.flex

  $ jstack 3813
  2014-10-17 12:48:11
  Full thread dump OpenJDK Zero VM (24.65-b04 mixed mode):

"Attach Listener" daemon prio=10 tid=0x8ee005d0 nid=0xefd waiting on condition [0x00000000]
     java.lang.Thread.State: RUNNABLE

"Service Thread" daemon prio=10 tid=0xb5e75b58 nid=0xeeb runnable [0x00000000]
    java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0xb5e74140 nid=0xeea runnable [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0xb5e63518 nid=0xee9 in Object.wait() [0x8f3fe000]
      java.lang.Thread.State: WAITING (on object monitor)
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9a7d4ac8> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
          - locked <0x9a7d4ac8> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
          at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

"Reference Handler" daemon prio=10 tid=0xb5e62008 nid=0xee8 in Object.wait() [0x8f6fe000]
     java.lang.Thread.State: WAITING (on object monitor)
         at java.lang.Object.wait(Native Method)
         - waiting on <0x9a7d4b58> (a java.lang.ref.Reference$Lock)
         at java.lang.Object.wait(Object.java:503)
         at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
         - locked <0x9a7d4b58> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0xb5e05a98 nid=0xee6 runnable [0xb6108000]
    java.lang.Thread.State: RUNNABLE
        at JFlex.Emitter.findActionStates(Emitter.java:1445)
        at JFlex.Emitter.emit(Emitter.java:1543)
        at JFlex.Main.generate(Main.java:118)
        at JFlex.Main.generate(Main.java:305)
        at JFlex.Main.main(Main.java:322)

"VM Thread" prio=10 tid=0xb5e5f6a0 nid=0xee7 runnable 

"VM Periodic Task Thread" prio=10 tid=0xb5e777f0 nid=0xeec waiting on condition 

JNI global references: 133


Apparently some issue is affecting Java threads on ARM.

Regards,
-- 
  Hector Oron

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