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vjtop的active threads 相关 信息调整 vipshop#139
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142 changes: 142 additions & 0 deletions
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vjtop/src/main/java/com/vip/vjtools/vjtop/ThreadPrinter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| package com.vip.vjtools.vjtop; | ||
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| import java.io.IOException; | ||
| import java.lang.management.LockInfo; | ||
| import java.lang.management.ThreadInfo; | ||
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| /** | ||
| * 打印线程名，线程栈信息 | ||
| */ | ||
| public class ThreadPrinter { | ||
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| private VMDetailView view; | ||
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| public ThreadPrinter(VMDetailView view) { | ||
| this.view = view; | ||
| } | ||
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| /** | ||
| * 打印单条线程的stack strace，会造成停顿，但比获取全部线程的stack trace停顿少 | ||
| */ | ||
| public void printStack(long tid) throws IOException { | ||
| System.out.printf("%n Stack trace of thread %d:%n", tid); | ||
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| ThreadInfo info = view.vmInfo.getThreadInfo(tid, 20); | ||
| if (info == null) { | ||
| System.err.println(" TID not exist:" + tid); | ||
| return; | ||
| } | ||
| printSingleThread(info); | ||
| System.out.flush(); | ||
| } | ||
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| /** | ||
| * 打印所有活跃线程的stack strace，会造成停顿，但比获取全部线程的stack trace停顿少 | ||
| */ | ||
| public void printTopStack() throws IOException { | ||
| System.out.printf("%n Stack trace of top %d threads:%n", view.threadLimit); | ||
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| ThreadInfo[] infos = view.topThreadInfo.getTopThreadInfo(); | ||
| for (ThreadInfo info : infos) { | ||
| if (info == null) { | ||
| continue; | ||
| } | ||
| printSingleThread(info); | ||
| } | ||
| System.out.flush(); | ||
| } | ||
|
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| public StackTraceElement[] printSingleThread(ThreadInfo info) { | ||
| StackTraceElement[] trace = info.getStackTrace(); | ||
| StringBuilder sb = new StringBuilder(512); | ||
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| sb.append(" ").append(info.getThreadId()).append(": \"").append(info.getThreadName()).append("\""); | ||
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| if (view.vmInfo.threadContentionMonitoringSupported) { | ||
| sb.append(" (blocked:").append(info.getBlockedCount()).append("/").append(info.getBlockedTime()) | ||
| .append("ms, wait:").append(info.getWaitedCount()).append("/").append(info.getWaitedTime()) | ||
| .append("ms"); | ||
| } else { | ||
| sb.append(" (blocked:").append(info.getBlockedCount()).append(" times, wait:").append(info.getWaitedCount()) | ||
| .append(" times"); | ||
| } | ||
|
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| if (info.isSuspended()) { | ||
| sb.append(" ,suspended"); | ||
| } | ||
| if (info.isInNative()) { | ||
| sb.append(" ,in native"); | ||
| } | ||
| sb.append(")\n"); | ||
|
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| sb.append(" java.lang.Thread.State: " + info.getThreadState().toString()); | ||
| LockInfo lockInfo = info.getLockInfo(); | ||
| if (lockInfo != null) { | ||
| sb.append("(on " + lockInfo + ")"); | ||
| } | ||
| if (info.getLockOwnerName() != null) { | ||
| sb.append(" owned by " + info.getLockOwnerId() + ":\"" + info.getLockOwnerName() + "\""); | ||
| } | ||
| sb.append("\n"); | ||
| for (StackTraceElement traceElement : trace) { | ||
| sb.append("\tat ").append(traceElement).append("\n"); | ||
| } | ||
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| System.out.print(sb.toString()); | ||
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| return trace; | ||
| } | ||
|
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| /** | ||
| * 打印所有线程，只获取名称不获取stack，不造成停顿 | ||
| */ | ||
| public void printAllThreads() throws IOException { | ||
| System.out.println("\n Thread Id and name of all live threads:"); | ||
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| long tids[] = view.vmInfo.getAllThreadIds(); | ||
| ThreadInfo[] threadInfos = view.vmInfo.getThreadInfo(tids); | ||
| for (ThreadInfo info : threadInfos) { | ||
| if (info == null) { | ||
| continue; | ||
| } | ||
|
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| String threadName = info.getThreadName(); | ||
| if (view.threadNameFilter != null && !threadName.toLowerCase().contains(view.threadNameFilter)) { | ||
| continue; | ||
| } | ||
| System.out.println( | ||
| " " + info.getThreadId() + "\t: \"" + threadName + "\" (" + info.getThreadState().toString() + ")"); | ||
| } | ||
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| if (view.threadNameFilter != null) { | ||
| System.out.println(" Thread name filter is:" + view.threadNameFilter); | ||
| } | ||
| System.out.flush(); | ||
| } | ||
|
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| public void printBlockedThreads() throws IOException { | ||
| System.out.println("\n Stack trace of blocked threads:"); | ||
| int counter = 0; | ||
| ThreadInfo[] threadInfos = view.vmInfo.getAllThreadInfo(); | ||
| for (ThreadInfo info : threadInfos) { | ||
| if (info == null) { | ||
| continue; | ||
| } | ||
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| String threadName = info.getThreadName(); | ||
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| if (Thread.State.BLOCKED.equals(info.getThreadState()) | ||
| && (view.threadNameFilter == null || threadName.toLowerCase().contains(view.threadNameFilter))) { | ||
| printSingleThread(info); | ||
| counter++; | ||
| } | ||
| } | ||
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| System.out.println(" Total " + counter + " blocked threads"); | ||
|
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| if (view.threadNameFilter != null) { | ||
| System.out.println(" Thread name filter is:" + view.threadNameFilter); | ||
| } | ||
| System.out.flush(); | ||
| } | ||
| } |
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