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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