Java 之 jstack的使用：Java棧追蹤工具

jstack命令打印指定Java進程、核心文件或遠程調試服務器的Java線程的Java 棧跟蹤。對於每個Java框架，將打印完整的類名、方法名、字節碼索引(BCI)和行號(如果可用)。使用-m選項，jstack命令使用程序計數器(PC)打印所有線程的Java和本機幀。對於每個本機幀，打印距離PC最近的本機符號(如果可用)

全稱: stack trace for java

形式：jstack -option pid

       -F
              Force a stack dump when jstack [-l] pid does not respond.

       -l
              Long listing. Prints additional information about locks such as a list of owned java.util.concurrent ownable synchronizers. 

       -m
              Prints a mixed mode stack trace that has both Java and native C/C++ frames.

1，jstack -l 961012

長清單，打印關於鎖的附加信息，例如擁有 JUC的 synchronizers 的一個list

jstack -l 961012 > jstack.txt
把鎖信息的信息打印到一個文件去，方便查看。

2020-06-11 16:17:20
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.131-b11 mixed mode):

"Attach Listener" #14 daemon prio=9 os_prio=0 tid=0x00007ff514001000 nid=0x3f397 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"DestroyJavaVM" #13 prio=5 os_prio=0 tid=0x00007ff554008800 nid=0xea9f5 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"pool-1-thread-1" #12 prio=5 os_prio=0 tid=0x00007ff554378800 nid=0xeaa24 waiting on condition [0x00007ff52d6d9000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
	at java.lang.Thread.sleep(Native Method)
	at com.fusionskye.ezsonar.ttmcreater.periodical.MessageCreater.waitWrite(MessageCreater.java:429)
	at com.fusionskye.ezsonar.ttmcreater.periodical.MessageCreater.setNewGroupMsg(MessageCreater.java:341)
	at com.fusionskye.ezsonar.ttmcreater.periodical.MessageCreater.run(MessageCreater.java:162)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)

   Locked ownable synchronizers:
	- <0x00000000c002b4a8> (a java.util.concurrent.ThreadPoolExecutor$Worker)

"Service Thread" #9 daemon prio=9 os_prio=0 tid=0x00007ff554219800 nid=0xeaa0a runnable [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"C1 CompilerThread3" #8 daemon prio=9 os_prio=0 tid=0x00007ff55420e000 nid=0xeaa09 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"C2 CompilerThread2" #7 daemon prio=9 os_prio=0 tid=0x00007ff55420c000 nid=0xeaa08 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"C2 CompilerThread1" #6 daemon prio=9 os_prio=0 tid=0x00007ff55420a000 nid=0xeaa07 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"C2 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x00007ff554207000 nid=0xeaa06 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x00007ff554205800 nid=0xeaa05 runnable [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

   Locked ownable synchronizers:
	- None

"Finalizer" #3 daemon prio=8 os_prio=0 tid=0x00007ff5541d2800 nid=0xeaa04 in Object.wait() [0x00007ff5443f2000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000c002fa10> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
	- locked <0x00000000c002fa10> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

   Locked ownable synchronizers:
	- None

"Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x00007ff5541ce000 nid=0xeaa03 in Object.wait() [0x00007ff5444f3000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:502)
	at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
	- locked <0x00000000c002f9e0> (a java.lang.ref.Reference$Lock)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)

   Locked ownable synchronizers:
	- None

"VM Thread" os_prio=0 tid=0x00007ff5541c6000 nid=0xeaa02 runnable 

"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x00007ff55401e000 nid=0xea9f9 runnable 

"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x00007ff55401f800 nid=0xea9fa runnable 

"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x00007ff554021800 nid=0xea9fb runnable 

"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x00007ff554023000 nid=0xea9fc runnable 

"GC task thread#4 (ParallelGC)" os_prio=0 tid=0x00007ff554025000 nid=0xea9fd runnable 

"GC task thread#5 (ParallelGC)" os_prio=0 tid=0x00007ff554027000 nid=0xea9ff runnable 

"GC task thread#6 (ParallelGC)" os_prio=0 tid=0x00007ff554028800 nid=0xeaa00 runnable 

"GC task thread#7 (ParallelGC)" os_prio=0 tid=0x00007ff55402a800 nid=0xeaa01 runnable 

"VM Periodic Task Thread" os_prio=0 tid=0x00007ff55421c800 nid=0xeaa0b waiting on condition 

JNI global references: 64

好像不太多，就粘這吧。

 

2，jstack -m 961012 >jstack2.flows

打印具有Java和本機C/ c++框架的混合模式堆棧跟蹤。

Attaching to process ID 961012, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.131-b11
Deadlock Detection:

No deadlocks found.

----------------- 961013 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd800	_ZN7Monitor4waitEblb + 0x100
0x00007ff55c472621	_ZN7Threads10destroy_vmEv + 0x51
0x00007ff55c0cb8e1	jni_DestroyJavaVM + 0x81
0x00007ff55cfc763d	JavaMain + 0x27d
----------------- 961017 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961018 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961019 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961020 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961021 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961023 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961024 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961025 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55bfd3f23	_ZN13GCTaskManager8get_taskEj + 0x43
0x00007ff55bfd4db8	_ZN12GCTaskThread3runEv + 0x188
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961026 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55c4cc029	_ZN8VMThread4loopEv + 0x339
0x00007ff55c4cc330	_ZN8VMThread3runEv + 0x70
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961027 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c30e655	_ZN13ObjectMonitor4waitElbP6Thread + 0xa65
0x00007ff55c121d52	JVM_MonitorWait + 0x182
0x00007ff545162568	<Unknown compiled code>
----------------- 961028 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c30e655	_ZN13ObjectMonitor4waitElbP6Thread + 0xa65
0x00007ff55c121d52	JVM_MonitorWait + 0x182
0x00007ff545162568	<Unknown compiled code>
----------------- 961029 -----------------
0x00007ff55d1e3adb	do_futex_wait.constprop.1 + 0x2b
----------------- 961030 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd9d6	_ZN7Monitor4waitEblb + 0x2d6
0x00007ff55beab3fb	_ZN12CompileQueue3getEv + 0x13b
0x00007ff55bead64b	_ZN13CompileBroker20compiler_thread_loopEv + 0x18b
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961031 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd9d6	_ZN7Monitor4waitEblb + 0x2d6
0x00007ff55beab3fb	_ZN12CompileQueue3getEv + 0x13b
0x00007ff55bead64b	_ZN13CompileBroker20compiler_thread_loopEv + 0x18b
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961032 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd9d6	_ZN7Monitor4waitEblb + 0x2d6
0x00007ff55beab3fb	_ZN12CompileQueue3getEv + 0x13b
0x00007ff55bead64b	_ZN13CompileBroker20compiler_thread_loopEv + 0x18b
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961033 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd9d6	_ZN7Monitor4waitEblb + 0x2d6
0x00007ff55beab3fb	_ZN12CompileQueue3getEv + 0x13b
0x00007ff55bead64b	_ZN13CompileBroker20compiler_thread_loopEv + 0x18b
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961034 -----------------
0x00007ff55d1e1965	__pthread_cond_wait + 0xc5
0x00007ff55c2dd037	_ZN7Monitor5IWaitEP6Threadl + 0xf7
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55c3bca58	_ZN13ServiceThread20service_thread_entryEP10JavaThreadP6Thread + 0x398
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961035 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c2dd38e	_ZN7Monitor5IWaitEP6Threadl + 0x44e
0x00007ff55c2dd956	_ZN7Monitor4waitEblb + 0x256
0x00007ff55c46bce1	_ZNK13WatcherThread5sleepEv + 0x71
0x00007ff55c46d51e	_ZN13WatcherThread3runEv + 0x5e
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961060 -----------------
0x00007ff55d1e1d12	__pthread_cond_timedwait + 0x132
0x00007ff55c3238f3	_ZN2os5sleepEP6Threadlb + 0x283
0x00007ff55c120bda	JVM_Sleep + 0x3ba
0x00007ff545353db1	<Unknown compiled code>
----------------- 258967 -----------------
0x00007ff55d1e497d	__libc_accept + 0x2d
0x00007ff55bd1a22e	_ZN14AttachListener7dequeueEv + 0x9e
0x00007ff55bd1913a	_ZL28attach_listener_thread_entryP10JavaThreadP6Thread + 0x19a
0x00007ff55c472833	_ZN10JavaThread17thread_main_innerEv + 0x103
0x00007ff55c47297c	_ZN10JavaThread3runEv + 0x11c
0x00007ff55c323568	_ZL10java_startP6Thread + 0x108
----------------- 961012 -----------------
0x00007ff55d1def47	pthread_join + 0xa7

也不太多，也粘貼出來看看。

這個方言望去，可讀性太不好了，連個類每啥的都沒有，全是地址。。。

難。