43 lines
1.3 KiB
Java
43 lines
1.3 KiB
Java
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Listing all running threads
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// Find the root thread group
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ThreadGroup root = Thread.currentThread().getThreadGroup().getParent();
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while (root.getParent() != null) {
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root = root.getParent();
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}
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// Visit each thread group
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visit(root, 0);
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// This method recursively visits all thread groups under `group'.
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public static void visit(ThreadGroup group, int level) {
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// Get threads in `group'
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int numThreads = group.activeCount();
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Thread[] threads = new Thread[numThreads*2];
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numThreads = group.enumerate(threads, false);
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// Enumerate each thread in `group'
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for (int i=0; i // Get thread
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Thread thread = threads[i];
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}
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// Get thread subgroups of `group'
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int numGroups = group.activeGroupCount();
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ThreadGroup[] groups = new ThreadGroup[numGroups*2];
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numGroups = group.enumerate(groups, false);
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// Recursively visit each subgroup
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for (int i=0; i visit(groups[i], level+1);
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}
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}
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//Here's an example of some thread groups that contain some threads:
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java.lang.ThreadGroup[name=system,maxpri=10]
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Thread[Reference Handler,10,system]
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Thread[Finalizer,8,system]
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Thread[Signal Dispatcher,10,system]
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Thread[CompileThread0,10,system]
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java.lang.ThreadGroup[name=main,maxpri=10]
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Thread[main,5,main]
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Thread[Thread-1,5,main]
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