John.Ying-应志浩
2 years ago
3 changed files with 288 additions and 5 deletions
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package com.fr.design.carton.developer; |
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import java.awt.AWTEvent; |
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/** |
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* EDT事件的包装类,用来额外处理信息 |
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* |
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* @author John.Ying |
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* @since 11.0 |
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* Created on 2023/4/14 |
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*/ |
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public class AwtEventInfo { |
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//获取执行该事件的线程
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private final Thread eventDispatchThread = Thread.currentThread(); |
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//在队列中等待执行的事件最后未执行的时间，当有一个事件执行完后就遍历dispatches给该值赋当前时间
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private long lastDispatchTimeMillis = System.currentTimeMillis(); |
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//事件开始的时间
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private final long startDispatchTimeMillis = System.currentTimeMillis(); |
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//awt事件
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private AWTEvent awtEvent; |
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//事件堆栈
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private StackTraceElement[] stackTrace; |
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/** |
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* 检查是否要给堆栈赋值 |
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*/ |
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public void checkForHang() { |
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if (isNeedToStackTrace()) { |
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this.stackTrace = eventDispatchThread.getStackTrace(); |
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} |
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} |
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/** |
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* 是否需要赋值堆栈满足 |
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* 耗时>20ms |
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*/ |
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private boolean isNeedToStackTrace() { |
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return (System.currentTimeMillis() - startDispatchTimeMillis) > EventDispatchDeveloperMode.MAX_TIME |
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&& stackTrace == null; |
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} |
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public Thread getEventDispatchThread() { |
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return eventDispatchThread; |
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} |
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public long getLastDispatchTimeMillis() { |
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return lastDispatchTimeMillis; |
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} |
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public void setLastDispatchTimeMillis(long lastDispatchTimeMillis) { |
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this.lastDispatchTimeMillis = lastDispatchTimeMillis; |
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} |
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public long getStartDispatchTimeMillis() { |
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return startDispatchTimeMillis; |
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} |
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public AWTEvent getAwtEvent() { |
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return awtEvent; |
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} |
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public void setAwtEvent(AWTEvent awtEvent) { |
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this.awtEvent = awtEvent; |
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} |
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public StackTraceElement[] getStackTrace() { |
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return stackTrace; |
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} |
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public void setStackTrace(StackTraceElement[] stackTrace) { |
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this.stackTrace = stackTrace; |
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} |
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} |
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@ -0,0 +1,146 @@
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package com.fr.design.carton.developer; |
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import com.fr.concurrent.FineExecutors; |
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import com.fr.design.carton.EventDispatchThreadHangMonitor; |
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import com.fr.design.ui.util.UIUtil; |
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import com.fr.log.FineLoggerFactory; |
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import java.awt.AWTEvent; |
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import java.awt.EventQueue; |
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import java.awt.Toolkit; |
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import java.util.LinkedList; |
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import java.util.Timer; |
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import java.util.TimerTask; |
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import java.util.concurrent.ScheduledExecutorService; |
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import java.util.concurrent.TimeUnit; |
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/** |
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* 开发者模式重写的EDT |
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* |
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* @author John.Ying |
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* @since 11.0 |
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* Created on 2023/4/14 |
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*/ |
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public final class EventDispatchDeveloperMode extends EventQueue { |
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/** |
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* 该链表为主要的实现定时任务的容器，在重写的dispatchEvent中由pre方法将DispatchInfo加入到链表，由post方法remove |
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*/ |
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private final LinkedList<AwtEventInfo> dispatches = new LinkedList<>(); |
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/** |
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* 开启间隔检测后两次检测的相隔时间ms |
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*/ |
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public static final long CHECK_INTERVAL_MS = 5; |
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private Timer timer; |
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/** |
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* edt事件最大允许的时间 |
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*/ |
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public static final long MAX_TIME = 20; |
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public static final EventDispatchDeveloperMode INSTANCE = new EventDispatchDeveloperMode(); |
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@Override |
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protected void dispatchEvent(AWTEvent event) { |
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try { |
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preDispatchEvent(event); |
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super.dispatchEvent(event); |
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} finally { |
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postDispatchEvent(); |
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} |
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} |
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/** |
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* 事件分发前处理 |
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*/ |
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private synchronized void preDispatchEvent(AWTEvent event) { |
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synchronized (dispatches) { |
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AwtEventInfo awtEventInfo = new AwtEventInfo(); |
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awtEventInfo.setAwtEvent(event); |
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dispatches.addLast(awtEventInfo); |
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} |
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} |
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/** |
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* 事件分发后处理 |
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*/ |
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private synchronized void postDispatchEvent() { |
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synchronized (dispatches) { |
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AwtEventInfo awtEventInfo = dispatches.removeLast(); |
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//嵌套最深的事件执行完毕后刷新链表中其他事件的lastDispatchTimeMillis
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Thread currentEventDispatchThread = Thread.currentThread(); |
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for (AwtEventInfo info : dispatches) { |
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info.setLastDispatchTimeMillis(System.currentTimeMillis()); |
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} |
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long nowTime = System.currentTimeMillis(); |
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long totalTime = nowTime - awtEventInfo.getStartDispatchTimeMillis(); |
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long continuationTime = nowTime - awtEventInfo.getLastDispatchTimeMillis(); |
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if (continuationTime > MAX_TIME) { |
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FineLoggerFactory.getLogger() |
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.warn("awt event spend time more than 20ms, totalTime {} continuationTime {} the stack is {}" |
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, totalTime, continuationTime, EventDispatchThreadHangMonitor.stackTraceToStringForConsole(awtEventInfo.getStackTrace())); |
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} |
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} |
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} |
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/** |
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* 将swing中默认的EventQueue换成自己的 |
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*/ |
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public void initMonitoring() { |
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UIUtil.invokeLaterIfNeeded(() -> Toolkit.getDefaultToolkit().getSystemEventQueue().push(INSTANCE)); |
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initTimer(); |
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startFilterModalWindow(); |
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} |
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/** |
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* Sets up a timer to check for hangs frequently. |
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* 初始化一个Timer |
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*/ |
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public void initTimer() { |
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final long initialDelayMs = 0; |
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final boolean daemon = true; |
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timer = new Timer("EventDispatchDeveloperMode", daemon); |
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timer.schedule(new HangChecker(), initialDelayMs, CHECK_INTERVAL_MS); |
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} |
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/** |
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* /消除Timer |
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*/ |
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public void stopTimer() { |
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if (timer != null) { |
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timer.cancel(); |
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} |
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} |
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/** |
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* /定时执行的任务 |
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*/ |
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public class HangChecker extends TimerTask { |
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@Override |
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public void run() { |
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synchronized (dispatches) { |
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//如果链表为空定时检测就不进行
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if (dispatches.isEmpty()) { |
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return; |
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} |
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dispatches.getLast().checkForHang(); |
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} |
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} |
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} |
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/** |
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* 消除模态框影响 |
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*/ |
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public void startFilterModalWindow() { |
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ScheduledExecutorService scheduledExecutorService = FineExecutors.newSingleThreadScheduledExecutor(); |
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scheduledExecutorService.scheduleAtFixedRate(new Runnable() { |
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@Override |
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public void run() { |
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UIUtil.invokeLaterIfNeeded(() -> { |
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//不用干事,切个片就可以
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}); |
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} |
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}, 0, 10, TimeUnit.MILLISECONDS); |
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} |
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} |
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