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目的
示例 Jython 脚本说明如何降低查询 ThreadGroup 以收集所有子线程实例。
输出方案如下内容：
Threads:
1: Reference Handler
2: Finalizer
3: Signal Dispatcher
4: Java2D Disposer
5: TimerQueue
6: AWT-XAWT
7: AWT-Shutdown
8: AWT-EventQueue-0
9: SocketListener
10: DestroyJavaVM
11: pool-3-thread-1
12: 3D-V-IMP-updater
13: pool-4-thread-1
14: list all threads
15: J3D-RenderingAttributesStructureUpdateThread
16: J3D-TimerThread
17: J3D-NotificationThread
18: J3D-MasterControl-1
19: J3D-Renderer-1
20: J3D-BehaviorStructureUpdateThread-1
21: J3D-GeometryStructureUpdateThread-1
22: J3D-SoundStructureUpdateThread-1
23: J3D-RenderingEnvironmentStructureUpdateThread-1
24: J3D-TransformStructureUpdateThread-1
25: J3D-BehaviorScheduler-1
26: J3D-RenderStructureUpdateThread-1
27: J3D-SoundSchedulerUpdateThread-1
28: J3D-InputDeviceScheduler-1
＃＃代码
from jarray import zeros
from java.lang import *
def findRootThreadGroup():
tg = Thread.currentThread().getThreadGroup()
root_tg = tg.getParent()
root_tg = tg
parent = root_tg.getParent()
while None != parent:
root_tg = parent
parent = parent.getParent()
return root_tg
def listGroup(list, group):
threads = zeros(group.activeCount(), Thread)
group.enumerate(threads, 0)
groups = zeros(group.activeGroupCount(), ThreadGroup)
group.enumerate(groups, 0)
for t in threads:
if None is not t: list.append(t.getName())
for g in groups:
if None is not g: listGroup(list, g)
def listThreadNames():
list = []
listGroup(list, findRootThreadGroup())
return list
IJ.log("Threads:")
i = 1
for thread in listThreadNames():
IJ.log(str(i) + ": " + thread)
i += 1
