[PDFBox-user] DeadLock with PDFBox.

[DURGA D. <dur...@gm...>]

Here is the complete dump of doing kill -3 on a hung Java Process

Full thread dump Java HotSpot(TM) Server VM (1.5.0_06-b05 mixed mode):

"AWT-Motif" daemon prio=10 tid=0x008a3b18 nid=0x25 runnable
[0xb0e7f000..0xb0e7f970]
at sun.awt.motif.MToolkit.run(Native Method)
at java.lang.Thread.run(Thread.java:595)

"Java2D Disposer" daemon prio=10 tid=0x0073ff68 nid=0x23 in Object.wait()
[0xb107f000..0xb107fa70]
at java.lang.Object.wait(Native Method)
- waiting on <0xb9425318> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0xb9425318> (a java.lang.ref.ReferenceQueue$Lock)
< at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
< at sun.java2d.Disposer.run(Disposer.java:107)
< at java.lang.Thread.run(Thread.java:595)
<
< "pool-1-thread-5" prio=10 tid=0x002bd8b0 nid=0x11 in Object.wait()
[0xb297e000..0xb297fb70]
< at org.pdfbox.pdfparser.BaseParser.parseDirObject(BaseParser.java:946)
< at
org.pdfbox.pdfparser.BaseParser.parseCOSDictionaryValue(BaseParser.java:150
)
< at
org.pdfbox.pdfparser.BaseParser.parseCOSDictionary(BaseParser.java:206)
< at org.pdfbox.pdfparser.BaseParser.parseDirObject(BaseParser.java:858)
< at org.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:448)
< at org.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:176)
< at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:707)
< at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:691)
< at
com.sun.comms.iss.indexapi.converter.PDFConverter.convertToText(PDFConverte
r.java:161)
< at
com.sun.comms.iss.indexapi.converter.PDFConverter.getObject(PDFConverter.ja
va:84)

<
< "pool-1-thread-2" prio=10 tid=0x002c1d30 nid=0xe in Object.wait()
[0xb2cff000..0xb2cffbf0]
< at org.pdfbox.cos.COSDocument.getObjectFromPool(COSDocument.java:507)
< at org.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:467)
< at org.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:176)
< at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:707)
< at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:691)
at
com.sun.comms.iss.indexapi.converter.PDFConverter.convertToText(PDFConverte
r.java:161)
at

"pool-1-thread-1" prio=10 tid=0x002c15f8 nid=0xd in Object.wait()
[0xb2dfe000..0xb2dff970]
at org.pdfbox.cos.COSNumber.<clinit>(COSNumber.java:49)
at org.pdfbox.pdfparser.BaseParser.parseDirObject(BaseParser.java:946)
at
org.pdfbox.pdfparser.BaseParser.parseCOSDictionaryValue(BaseParser.java:150
)
at
org.pdfbox.pdfparser.BaseParser.parseCOSDictionary(BaseParser.java:206)
at org.pdfbox.pdfparser.BaseParser.parseDirObject(BaseParser.java:858)
at org.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:448)
at org.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:176)
at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:707)
at org.pdfbox.pdmodel.PDDocument.load(PDDocument.java:691)

"Low Memory Detector" daemon prio=10 tid=0x0014ae70 nid=0xb runnable
[0x00000000..0x00000000]

"CompilerThread1" daemon prio=10 tid=0x001495b8 nid=0xa waiting on
condition [0x00000000..0xb437eaa8]

"CompilerThread0" daemon prio=10 tid=0x00148748 nid=0x9 waiting on
condition [0x00000000..0xb447ec28]

"AdapterThread" daemon prio=10 tid=0x001478d8 nid=0x8 waiting on condition
[0x00000000..0x00000000]

"Signal Dispatcher" daemon prio=10 tid=0x00146b60 nid=0x7 waiting on
condition [0x00000000..0x00000000]

"Finalizer" daemon prio=10 tid=0x0013a008 nid=0x6 in Object.wait()
[0xb477f000..0xb477fbf0]
at java.lang.Object.wait(Native Method)
- waiting on <0xb8a40b48> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0xb8a40b48> (a Java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x00139ab8 nid=0x5 in Object.wait()
[0xf8cff000..0xf8cff970]
at java.lang.Object.wait(Native Method)
- waiting on <0xb90d23b0> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:474)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
- locked <0xb90d23b0> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x00037db0 nid=0x1 waiting on condition
[0xffbfd000..0xffbfdcf0]
at sun.misc.Unsafe.park(Native Method)
at
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:146)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await
Nanos(AbstractQueuedSynchronizer.java:1803)
at
java.util.concurrent.ThreadPoolExecutor.awaitTermination(ThreadPoolExecutor
.java:1028)

"VM Thread" prio=10 tid=0x001379d8 nid=0x4 runnable

"GC task thread#0 (ParallelGC)" prio=10 tid=0x000b8c60 nid=0x2 runnable

"GC task thread#1 (ParallelGC)" prio=10 tid=0x000b96a0 nid=0x3 runnable

"VM Periodic Task Thread" prio=10 tid=0x0014c108 nid=0xc waiting on
condition