> When we use jcmd <pid> Thread.dump/jstack <pid>, we could dump all Java
> thread stack trace, but unfortunately we are not able to print NonJavaThread
> stack trace such as VMThread/GCWorker, etc. For these threads, we know
> nothing about what are they doing/are they blocked in pthread condition from
> jstack output. An alternative is to use pstack, it internally attaches
> destination process and uses `thread apply all bt`, which introduces more
> overhead and much more dangerous.
>
> ====== JStack Ouput(Currrent)
>
> ...
> "ApplicationImpl pooled thread 441" #1478 prio=4 os_prio=31 cpu=11.71ms
> elapsed=60.30s tid=0x00007f8d32171000 nid=0x22f23 waiting on condition
> [0x0000700010d5d000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at jdk.internal.misc.Unsafe.park(java.base@11.0.11/Native Method)
> - parking to wait for <0x00000007af851760> (a
> java.util.concurrent.SynchronousQueue$TransferStack)
> at
> java.util.concurrent.locks.LockSupport.parkNanos(java.base@11.0.11/LockSupport.java:234)
> at
> java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11.0.11/SynchronousQueue.java:462)
> at
> java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11.0.11/SynchronousQueue.java:361)
> at
> java.util.concurrent.SynchronousQueue.poll(java.base@11.0.11/SynchronousQueue.java:937)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11.0.11/ThreadPoolExecutor.java:1053)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11.0.11/ThreadPoolExecutor.java:1114)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11.0.11/ThreadPoolExecutor.java:628)
> at
> java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(java.base@11.0.11/Executors.java:668)
> at
> java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(java.base@11.0.11/Executors.java:665)
> at java.security.AccessController.doPrivileged(java.base@11.0.11/Native
> Method)
> at
> java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(java.base@11.0.11/Executors.java:665)
> at java.lang.Thread.run(java.base@11.0.11/Thread.java:829)
>
> "VM Thread" os_prio=31 cpu=31205.83ms elapsed=154131.15s
> tid=0x00007f8d49046000 nid=0x4703 runnable
>
> "GC Thread#0" os_prio=31 cpu=3811.96ms elapsed=154131.18s
> tid=0x00007f8d49809800 nid=0x3603 runnable
>
> "GC Thread#1" os_prio=31 cpu=3749.09ms elapsed=154130.24s
> tid=0x00007f8d4a9b3000 nid=0x6103 runnable
>
> "GC Thread#2" os_prio=31 cpu=3745.73ms elapsed=154129.74s
> tid=0x00007f8d48249000 nid=0x12f27 runnable
>
> "GC Thread#3" os_prio=31 cpu=3692.77ms elapsed=154129.74s
> tid=0x00007f8d48b93000 nid=0xe50b runnable
>
> "GC Thread#4" os_prio=31 cpu=3728.57ms elapsed=154129.74s
> tid=0x00007f8d47b0b000 nid=0xe603 runnable
>
> "GC Thread#5" os_prio=31 cpu=3726.08ms elapsed=154129.74s
> tid=0x00007f8d47afc800 nid=0xe803 runnable
>
> "GC Thread#6" os_prio=31 cpu=3660.35ms elapsed=154129.02s
> tid=0x00007f8d48de5800 nid=0x15d2f runnable
>
> "GC Thread#7" os_prio=31 cpu=3676.68ms elapsed=154129.02s
> tid=0x00007f8d48dc4800 nid=0x16103 runnable
>
> "GC Thread#8" os_prio=31 cpu=3676.15ms elapsed=154128.31s
> tid=0x00007f8d4849d800 nid=0x1f503 runnable
>
> "GC Thread#9" os_prio=31 cpu=3570.95ms elapsed=154128.31s
> tid=0x00007f8d494ab000 nid=0x1f303 runnable
>
> "CMS Main Thread" os_prio=31 cpu=6715.33ms elapsed=154131.18s
> tid=0x00007f8d4780f800 nid=0x4b03 runnable
>
> "CMS Thread#0" os_prio=31 cpu=2429.86ms elapsed=154131.18s
> tid=0x00007f8d4900e000 nid=0x3703 runnable
>
> "CMS Thread#1" os_prio=31 cpu=2422.35ms elapsed=154129.72s
> tid=0x00007f8d4d044000 nid=0x11a03 runnable
>
> "CMS Thread#2" os_prio=31 cpu=2418.81ms elapsed=154129.72s
> tid=0x00007f8d48b93800 nid=0xea03 runnable
>
> "VM Periodic Task Thread" os_prio=31 cpu=10658.80ms elapsed=154130.41s
> tid=0x00007f8d49035000 nid=0xa003 waiting on condition
>
> JNI global refs: 660, weak refs: 1217
>
>
> Most of above information makes no sense for further debugging. I think we
> can extend this functionality, e.g. add a new flag such as
> DumpAllThreadStackTrace, to print non java thread stack trace:
>
> ====== JStack Ouput(Modified)
>
> 2022-03-16 10:46:55
> Full thread dump OpenJDK 64-Bit Server VM
> (19-internal-adhoc.qingfengyy.jdktip mixed mode, sharing):
>
> Threads class SMR info:
> _java_thread_list=0x00007f15040015f0, length=22, elements={
> 0x00007f159c0255b0, 0x00007f159c1babc0, 0x00007f159c1bc180,
> 0x00007f159c1c21d0,
> 0x00007f159c1c36a0, 0x00007f159c1c4bb0, 0x00007f159c1c6730,
> 0x00007f159c1c7db0,
> 0x00007f159c1c9330, 0x00007f159c1fc300, 0x00007f159c211a60,
> 0x00007f159c213b60,
> 0x00007f159c302960, 0x00007f14cc0319d0, 0x00007f14cc0375c0,
> 0x00007f159c307e80,
> 0x00007f159c30db30, 0x00007f159c3e6db0, 0x00007f159c647300,
> 0x00007f159c64b600,
> 0x00007f159c678910, 0x00007f1504000be0
> }
>
> "main" #1 prio=5 os_prio=0 cpu=766.48ms elapsed=23.73s tid=0x00007f159c0255b0
> nid=115919 in Object.wait() [0x00007f15a3e58000]
> java.lang.Thread.State: TIMED_WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <no object reference available>
> at
> jdk.internal.org.jline.utils.NonBlockingInputStreamImpl.read(jdk.internal.le@19-internal/NonBlockingInputStreamImpl.java:139)
> - locked <0x00000000a2000368> (a
> jdk.internal.jshell.tool.ConsoleIOContext$1)
> at
> jdk.internal.org.jline.utils.NonBlockingInputStream.read(jdk.internal.le@19-internal/NonBlockingInputStream.java:62)
> at
> jdk.internal.org.jline.utils.NonBlocking$NonBlockingInputStreamReader.read(jdk.internal.le@19-internal/NonBlocking.java:168)
> at
> jdk.internal.org.jline.utils.NonBlockingReader.read(jdk.internal.le@19-internal/NonBlockingReader.java:57)
> at
> jdk.internal.org.jline.keymap.BindingReader.readCharacter(jdk.internal.le@19-internal/BindingReader.java:160)
> at
> jdk.internal.org.jline.keymap.BindingReader.readBinding(jdk.internal.le@19-internal/BindingReader.java:110)
> at
> jdk.internal.org.jline.keymap.BindingReader.readBinding(jdk.internal.le@19-internal/BindingReader.java:61)
> at
> jdk.internal.org.jline.reader.impl.LineReaderImpl.doReadBinding(jdk.internal.le@19-internal/LineReaderImpl.java:923)
> at
> jdk.internal.org.jline.reader.impl.LineReaderImpl.readBinding(jdk.internal.le@19-internal/LineReaderImpl.java:956)
> at
> jdk.internal.jshell.tool.ConsoleIOContext$2.readBinding(jdk.jshell@19-internal/ConsoleIOContext.java:173)
> at
> jdk.internal.org.jline.reader.impl.LineReaderImpl.readLine(jdk.internal.le@19-internal/LineReaderImpl.java:651)
> at
> jdk.internal.org.jline.reader.impl.LineReaderImpl.readLine(jdk.internal.le@19-internal/LineReaderImpl.java:468)
> at
> jdk.internal.jshell.tool.ConsoleIOContext.readLine(jdk.jshell@19-internal/ConsoleIOContext.java:249)
> at
> jdk.internal.jshell.tool.JShellTool.getInput(jdk.jshell@19-internal/JShellTool.java:1281)
> at
> jdk.internal.jshell.tool.JShellTool.run(jdk.jshell@19-internal/JShellTool.java:1215)
> at
> jdk.internal.jshell.tool.JShellTool.start(jdk.jshell@19-internal/JShellTool.java:1001)
> at
> jdk.internal.jshell.tool.JShellToolBuilder.start(jdk.jshell@19-internal/JShellToolBuilder.java:261)
> at
> jdk.internal.jshell.tool.JShellToolProvider.main(jdk.jshell@19-internal/JShellToolProvider.java:120)
>
> "Reference Handler" #2 daemon prio=10 os_prio=0 cpu=1.04ms elapsed=23.72s
> tid=0x00007f159c1babc0 nid=115926 waiting on condition [0x00007f1529302000]
> java.lang.Thread.State: RUNNABLE
> at
> java.lang.ref.Reference.waitForReferencePendingList(java.base@19-internal/Native
> Method)
> at
> java.lang.ref.Reference.processPendingReferences(java.base@19-internal/Reference.java:253)
> at
> java.lang.ref.Reference$ReferenceHandler.run(java.base@19-internal/Reference.java:215)
>
> "Finalizer" #3 daemon prio=8 os_prio=0 cpu=0.35ms elapsed=23.72s
> tid=0x00007f159c1bc180 nid=115927 in Object.wait() [0x00007f1529201000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <0x00000000a00002e8> (a java.lang.ref.ReferenceQueue$Lock)
> at
> java.lang.ref.ReferenceQueue.remove(java.base@19-internal/ReferenceQueue.java:155)
> - locked <0x00000000a00002e8> (a java.lang.ref.ReferenceQueue$Lock)
> at
> java.lang.ref.ReferenceQueue.remove(java.base@19-internal/ReferenceQueue.java:176)
> at
> java.lang.ref.Finalizer$FinalizerThread.run(java.base@19-internal/Finalizer.java:183)
>
> "Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0.24ms elapsed=23.71s
> tid=0x00007f159c1c21d0 nid=115928 waiting on condition [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "Service Thread" #5 daemon prio=9 os_prio=0 cpu=0.20ms elapsed=23.71s
> tid=0x00007f159c1c36a0 nid=115929 runnable [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "Monitor Deflation Thread" #6 daemon prio=9 os_prio=0 cpu=0.24ms
> elapsed=23.71s tid=0x00007f159c1c4bb0 nid=115930 runnable
> [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "C2 CompilerThread0" #7 daemon prio=9 os_prio=0 cpu=527.71ms elapsed=23.71s
> tid=0x00007f159c1c6730 nid=115931 waiting on condition [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
> No compile task
>
> "C1 CompilerThread0" #19 daemon prio=9 os_prio=0 cpu=216.87ms elapsed=23.71s
> tid=0x00007f159c1c7db0 nid=115932 waiting on condition [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
> No compile task
>
> "Sweeper thread" #25 daemon prio=9 os_prio=0 cpu=0.04ms elapsed=23.71s
> tid=0x00007f159c1c9330 nid=115933 runnable [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "Notification Thread" #26 daemon prio=9 os_prio=0 cpu=0.05ms elapsed=23.70s
> tid=0x00007f159c1fc300 nid=115936 runnable [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "Common-Cleaner" #27 daemon prio=8 os_prio=0 cpu=0.99ms elapsed=23.68s
> tid=0x00007f159c211a60 nid=115938 in Object.wait() [0x00007f15282d2000]
> java.lang.Thread.State: TIMED_WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <no object reference available>
> at
> java.lang.ref.ReferenceQueue.remove(java.base@19-internal/ReferenceQueue.java:155)
> - locked <0x00000000a0000628> (a java.lang.ref.ReferenceQueue$Lock)
> at
> jdk.internal.ref.CleanerImpl.run(java.base@19-internal/CleanerImpl.java:140)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
> at
> jdk.internal.misc.InnocuousThread.run(java.base@19-internal/InnocuousThread.java:162)
>
> "Timer-0" #28 daemon prio=5 os_prio=0 cpu=0.10ms elapsed=23.68s
> tid=0x00007f159c213b60 nid=115939 in Object.wait() [0x00007f15281d1000]
> java.lang.Thread.State: TIMED_WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <0x00000000a00007e8> (a java.util.TaskQueue)
> at java.util.TimerThread.mainLoop(java.base@19-internal/Timer.java:563)
> - locked <0x00000000a00007e8> (a java.util.TaskQueue)
> at java.util.TimerThread.run(java.base@19-internal/Timer.java:516)
>
> "process reaper" #30 daemon prio=10 os_prio=0 cpu=0.17ms elapsed=23.53s
> tid=0x00007f159c302960 nid=115944 runnable [0x00007f15a3c9e000]
> java.lang.Thread.State: RUNNABLE
> at
> java.lang.ProcessHandleImpl.waitForProcessExit0(java.base@19-internal/Native
> Method)
> at
> java.lang.ProcessHandleImpl$1.run(java.base@19-internal/ProcessHandleImpl.java:147)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@19-internal/ThreadPoolExecutor.java:1136)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@19-internal/ThreadPoolExecutor.java:635)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "JDI Internal Event Handler" #34 daemon prio=5 os_prio=0 cpu=14.16ms
> elapsed=23.49s tid=0x00007f14cc0319d0 nid=115971 in Object.wait()
> [0x00007f15096b7000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <no object reference available>
> at java.lang.Object.wait(java.base@19-internal/Object.java:338)
> at
> com.sun.tools.jdi.EventQueueImpl.removeUnfiltered(jdk.jdi@19-internal/EventQueueImpl.java:190)
> - locked <0x00000000a0000e80> (a com.sun.tools.jdi.EventQueueImpl)
> at
> com.sun.tools.jdi.EventQueueImpl.removeInternal(jdk.jdi@19-internal/EventQueueImpl.java:125)
> at
> com.sun.tools.jdi.InternalEventHandler.run(jdk.jdi@19-internal/InternalEventHandler.java:61)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "JDI Target VM Interface" #33 daemon prio=5 os_prio=0 cpu=16.02ms
> elapsed=23.49s tid=0x00007f14cc0375c0 nid=115972 runnable
> [0x00007f15095b6000]
> java.lang.Thread.State: RUNNABLE
> at sun.nio.ch.SocketDispatcher.read0(java.base@19-internal/Native
> Method)
> at
> sun.nio.ch.SocketDispatcher.read(java.base@19-internal/SocketDispatcher.java:47)
> at
> sun.nio.ch.NioSocketImpl.tryRead(java.base@19-internal/NioSocketImpl.java:258)
> at
> sun.nio.ch.NioSocketImpl.implRead(java.base@19-internal/NioSocketImpl.java:309)
> at
> sun.nio.ch.NioSocketImpl.read(java.base@19-internal/NioSocketImpl.java:347)
> at
> sun.nio.ch.NioSocketImpl$1.read(java.base@19-internal/NioSocketImpl.java:800)
> at
> java.net.Socket$SocketInputStream.read(java.base@19-internal/Socket.java:966)
> at
> java.net.Socket$SocketInputStream.read(java.base@19-internal/Socket.java:961)
> at
> com.sun.tools.jdi.SocketConnection.readPacket(jdk.jdi@19-internal/SocketConnection.java:82)
> - locked <0x00000000a00012e0> (a java.lang.Object)
> at com.sun.tools.jdi.TargetVM.run(jdk.jdi@19-internal/TargetVM.java:123)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "event-handler" #35 daemon prio=5 os_prio=0 cpu=8.29ms elapsed=23.48s
> tid=0x00007f159c307e80 nid=115973 in Object.wait() [0x00007f15098b9000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <no object reference available>
> at java.lang.Object.wait(java.base@19-internal/Object.java:338)
> at
> com.sun.tools.jdi.EventQueueImpl.removeUnfiltered(jdk.jdi@19-internal/EventQueueImpl.java:190)
> - locked <0x00000000a0001e98> (a com.sun.tools.jdi.EventQueueImpl)
> at
> com.sun.tools.jdi.EventQueueImpl.remove(jdk.jdi@19-internal/EventQueueImpl.java:97)
> at
> com.sun.tools.jdi.EventQueueImpl.remove(jdk.jdi@19-internal/EventQueueImpl.java:83)
> at
> jdk.jshell.execution.JdiEventHandler.run(jdk.jshell@19-internal/JdiEventHandler.java:79)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "output reader" #36 daemon prio=5 os_prio=0 cpu=0.30ms elapsed=23.44s
> tid=0x00007f159c30db30 nid=115990 runnable [0x00007f15097b8000]
> java.lang.Thread.State: RUNNABLE
> at sun.nio.ch.SocketDispatcher.read0(java.base@19-internal/Native
> Method)
> at
> sun.nio.ch.SocketDispatcher.read(java.base@19-internal/SocketDispatcher.java:47)
> at
> sun.nio.ch.NioSocketImpl.tryRead(java.base@19-internal/NioSocketImpl.java:258)
> at
> sun.nio.ch.NioSocketImpl.implRead(java.base@19-internal/NioSocketImpl.java:309)
> at
> sun.nio.ch.NioSocketImpl.read(java.base@19-internal/NioSocketImpl.java:347)
> at
> sun.nio.ch.NioSocketImpl$1.read(java.base@19-internal/NioSocketImpl.java:800)
> at
> java.net.Socket$SocketInputStream.read(java.base@19-internal/Socket.java:966)
> at
> java.net.Socket$SocketInputStream.read(java.base@19-internal/Socket.java:961)
> at
> java.io.FilterInputStream.read(java.base@19-internal/FilterInputStream.java:79)
> at
> jdk.jshell.execution.DemultiplexInput.run(jdk.jshell@19-internal/DemultiplexInput.java:60)
>
> "Thread-1" #38 daemon prio=5 os_prio=0 cpu=222.19ms elapsed=23.37s
> tid=0x00007f159c3e6db0 nid=115995 waiting on condition [0x00007f15094b5000]
> java.lang.Thread.State: WAITING (parking)
> at jdk.internal.misc.Unsafe.park(java.base@19-internal/Native Method)
> - parking to wait for <0x00000000a007a880> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at
> java.util.concurrent.locks.LockSupport.park(java.base@19-internal/LockSupport.java:341)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block(java.base@19-internal/AbstractQueuedSynchronizer.java:506)
> at
> java.util.concurrent.ForkJoinPool.unmanagedBlock(java.base@19-internal/ForkJoinPool.java:3464)
> at
> java.util.concurrent.ForkJoinPool.managedBlock(java.base@19-internal/ForkJoinPool.java:3435)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(java.base@19-internal/AbstractQueuedSynchronizer.java:1623)
> at
> java.util.concurrent.LinkedBlockingQueue.take(java.base@19-internal/LinkedBlockingQueue.java:435)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(java.base@19-internal/ThreadPoolExecutor.java:1062)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@19-internal/ThreadPoolExecutor.java:1122)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@19-internal/ThreadPoolExecutor.java:635)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "process reaper" #40 daemon prio=10 os_prio=0 cpu=1.83ms elapsed=22.94s
> tid=0x00007f159c647300 nid=116044 waiting on condition [0x00007f15280d0000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at jdk.internal.misc.Unsafe.park(java.base@19-internal/Native Method)
> - parking to wait for <0x00000000a0079fb0> (a
> java.util.concurrent.SynchronousQueue$TransferStack)
> at
> java.util.concurrent.locks.LockSupport.parkNanos(java.base@19-internal/LockSupport.java:252)
> at
> java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@19-internal/SynchronousQueue.java:401)
> at
> java.util.concurrent.SynchronousQueue.poll(java.base@19-internal/SynchronousQueue.java:903)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(java.base@19-internal/ThreadPoolExecutor.java:1061)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@19-internal/ThreadPoolExecutor.java:1122)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@19-internal/ThreadPoolExecutor.java:635)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "Thread-3" #41 daemon prio=5 os_prio=0 cpu=1.39ms elapsed=22.94s
> tid=0x00007f159c64b600 nid=116045 runnable [0x00007f14734ed000]
> java.lang.Thread.State: RUNNABLE
> at java.io.FileInputStream.read0(java.base@19-internal/Native Method)
> at
> java.io.FileInputStream.read(java.base@19-internal/FileInputStream.java:228)
> at
> jdk.internal.org.jline.terminal.impl.AbstractPty$PtyInputStream.read(jdk.internal.le@19-internal/AbstractPty.java:73)
> at
> jdk.internal.org.jline.utils.NonBlockingInputStream.read(jdk.internal.le@19-internal/NonBlockingInputStream.java:62)
> at
> jdk.internal.jshell.tool.StopDetectingInputStream.lambda$setInputStream$0(jdk.jshell@19-internal/StopDetectingInputStream.java:74)
> at
> jdk.internal.jshell.tool.StopDetectingInputStream$$Lambda$355/0x0000000800dd68d0.run(jdk.jshell@19-internal/Unknown
> Source)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "null non blocking reader thread" #43 daemon prio=5 os_prio=0 cpu=0.15ms
> elapsed=22.78s tid=0x00007f159c678910 nid=116063 in Object.wait()
> [0x00007f1472ee6000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(java.base@19-internal/Native Method)
> - waiting on <no object reference available>
> at java.lang.Object.wait(java.base@19-internal/Object.java:338)
> at
> jdk.internal.jshell.tool.StopDetectingInputStream.read(jdk.jshell@19-internal/StopDetectingInputStream.java:111)
> - locked <0x00000000a2000908> (a
> jdk.internal.jshell.tool.StopDetectingInputStream)
> at
> jdk.internal.org.jline.utils.NonBlockingInputStreamImpl.run(jdk.internal.le@19-internal/NonBlockingInputStreamImpl.java:216)
> at
> jdk.internal.org.jline.utils.NonBlockingInputStreamImpl$$Lambda$530/0x0000000800dfde40.run(jdk.internal.le@19-internal/Unknown
> Source)
> at java.lang.Thread.run(java.base@19-internal/Thread.java:828)
>
> "Attach Listener" #44 daemon prio=9 os_prio=0 cpu=0.17ms elapsed=0.10s
> tid=0x00007f1504000be0 nid=116383 waiting on condition [0x0000000000000000]
> java.lang.Thread.State: RUNNABLE
>
> "VM Thread" os_prio=0 cpu=8.31ms elapsed=23.72s tid=0x00007f159c1b78f0
> nid=115925 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> V [libjvm.so+0xf21ec5] VM_PrintThreads::doit()+0x25
> V [libjvm.so+0xf225aa] VM_Operation::evaluate()+0xea
> V [libjvm.so+0xf23f18] VMThread::evaluate_operation(VM_Operation*)+0xb8
> V [libjvm.so+0xf245c7] VMThread::inner_execute(VM_Operation*)+0x3a7
> V [libjvm.so+0xf24877] VMThread::run()+0xb7
> V [libjvm.so+0xe99770] Thread::call_run()+0xc0
> V [libjvm.so+0xc37a08] thread_native_entry(Thread*)+0xd8
>
> "GC Thread#0" os_prio=0 cpu=39.19ms elapsed=23.73s tid=0x00007f159c066a10
> nid=115920 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#1" os_prio=0 cpu=9.75ms elapsed=23.16s tid=0x00007f15180140e0
> nid=116014 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#2" os_prio=0 cpu=0.48ms elapsed=23.15s tid=0x00007f151801b730
> nid=116015 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#3" os_prio=0 cpu=11.09ms elapsed=23.15s tid=0x00007f151801c160
> nid=116016 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#4" os_prio=0 cpu=24.95ms elapsed=23.15s tid=0x00007f151801ccc0
> nid=116017 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#5" os_prio=0 cpu=0.58ms elapsed=23.15s tid=0x00007f151801d820
> nid=116018 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#6" os_prio=0 cpu=35.58ms elapsed=23.15s tid=0x00007f151801e380
> nid=116019 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#7" os_prio=0 cpu=13.88ms elapsed=22.98s tid=0x00007f151801b050
> nid=116042 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "GC Thread#8" os_prio=0 cpu=12.97ms elapsed=22.92s tid=0x00007f1518021950
> nid=116047 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Main Marker" os_prio=0 cpu=0.84ms elapsed=23.73s tid=0x00007f159c076ed0
> nid=115921 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xba33] pthread_cond_wait+0xc3
> V [libjvm.so+0xbf1589] Monitor::wait_without_safepoint_check(long)+0x39
> V [libjvm.so+0x725fda] G1ConcurrentMarkThread::wait_for_next_cycle()+0x3a
> V [libjvm.so+0x7270bb] G1ConcurrentMarkThread::run_service()+0xdb
> V [libjvm.so+0x60be0b] ConcurrentGCThread::run()+0x1b
> V [libjvm.so+0xe99770] Thread::call_run()+0xc0
> V [libjvm.so+0xc37a08] thread_native_entry(Thread*)+0xd8
>
> "G1 Conc#0" os_prio=0 cpu=6.39ms elapsed=23.73s tid=0x00007f159c077f50
> nid=115922 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#1" os_prio=0 cpu=1.74ms elapsed=23.05s tid=0x00007f152c000960
> nid=116022 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#2" os_prio=0 cpu=1.23ms elapsed=23.05s tid=0x00007f152c001490
> nid=116023 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#3" os_prio=0 cpu=2.04ms elapsed=23.05s tid=0x00007f152c001ff0
> nid=116024 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#4" os_prio=0 cpu=1.28ms elapsed=23.05s tid=0x00007f152c002b50
> nid=116025 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#5" os_prio=0 cpu=1.60ms elapsed=23.05s tid=0x00007f152c0036b0
> nid=116026 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#6" os_prio=0 cpu=1.61ms elapsed=23.05s tid=0x00007f152c004210
> nid=116027 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#7" os_prio=0 cpu=2.00ms elapsed=23.05s tid=0x00007f152c005160
> nid=116028 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#8" os_prio=0 cpu=1.58ms elapsed=23.05s tid=0x00007f152c0060b0
> nid=116029 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#9" os_prio=0 cpu=1.26ms elapsed=23.05s tid=0x00007f152c007000
> nid=116030 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#10" os_prio=0 cpu=1.61ms elapsed=23.05s tid=0x00007f152c007f50
> nid=116031 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#11" os_prio=0 cpu=1.52ms elapsed=23.05s tid=0x00007f152c008ea0
> nid=116032 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#12" os_prio=0 cpu=1.17ms elapsed=23.05s tid=0x00007f152c009df0
> nid=116033 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#13" os_prio=0 cpu=1.88ms elapsed=23.05s tid=0x00007f152c00ad40
> nid=116034 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#14" os_prio=0 cpu=1.31ms elapsed=23.05s tid=0x00007f152c00bc90
> nid=116035 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Conc#15" os_prio=0 cpu=1.52ms elapsed=23.05s tid=0x00007f152c00cbe0
> nid=116036 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Refine#0" os_prio=0 cpu=0.03ms elapsed=23.73s tid=0x00007f159c1881d0
> nid=115923 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xdb39] do_futex_wait.constprop.1+0x29
>
> "G1 Service" os_prio=0 cpu=0.72ms elapsed=23.73s tid=0x00007f159c189290
> nid=115924 runnable
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xbde2] pthread_cond_timedwait+0x132
> V [libjvm.so+0xbf1589] Monitor::wait_without_safepoint_check(long)+0x39
> V [libjvm.so+0x77d208] G1ServiceThread::wait_for_task()+0xf8
> V [libjvm.so+0x77d600] G1ServiceThread::run_service()+0x20
> V [libjvm.so+0x60be0b] ConcurrentGCThread::run()+0x1b
> V [libjvm.so+0xe99770] Thread::call_run()+0xc0
> V [libjvm.so+0xc37a08] thread_native_entry(Thread*)+0xd8
>
> "VM Periodic Task Thread" os_prio=0 cpu=4.05ms elapsed=23.71s
> tid=0x00007f159c1fddf0 nid=115937 waiting on condition
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C [libpthread.so.0+0xbde2] pthread_cond_timedwait+0x132
> V [libjvm.so+0xbf1589] Monitor::wait_without_safepoint_check(long)+0x39
> V [libjvm.so+0xc07015] WatcherThread::sleep() const+0xa5
> V [libjvm.so+0xc070e5] WatcherThread::run()+0x35
> V [libjvm.so+0xe99770] Thread::call_run()+0xc0
> V [libjvm.so+0xc37a08] thread_native_entry(Thread*)+0xd8
>
> JNI global refs: 28, weak refs: 0
Yi Yang has refreshed the contents of this pull request, and previous commits
have been removed. The incremental views will show differences compared to the
previous content of the PR. The pull request contains one new commit since the
last revision:
8283147: Include NonJavaThread stacktrace during thread dump
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/7833/files
- new: https://git.openjdk.java.net/jdk/pull/7833/files/ab1b879c..5e19e852
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7833&range=02
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7833&range=01-02
Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
Patch: https://git.openjdk.java.net/jdk/pull/7833.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/7833/head:pull/7833
PR: https://git.openjdk.java.net/jdk/pull/7833
