java - Mac OS X 10.9.4 上的小程序。卡在 CAccessible.selectionChanged()

Question

在 Mac OS X 10.9.4 上使用对话框时，我们的 java 小程序有时会挂起。始终具有相同的线程转储:

"AWT-EventQueue-2" prio=5 tid=0x00007fb599138800 nid=0xbd03 runnable [0x000000010fa75000]
           java.lang.Thread.State: RUNNABLE
            at sun.lwawt.macosx.CAccessible.selectionChanged(Native Method)
            at sun.lwawt.macosx.CAccessible.access$300(CAccessible.java:44)
            at sun.lwawt.macosx.CAccessible$AXTextChangeNotifier.caretUpdate(CAccessible.java:138)
            at javax.swing.text.JTextComponent.fireCaretUpdate(JTextComponent.java:407)
            at javax.swing.text.JTextComponent$MutableCaretEvent.fire(JTextComponent.java:4417)
            at javax.swing.text.JTextComponent$MutableCaretEvent.mouseReleased(JTextComponent.java:4473)
            at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
            at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
            at java.awt.Component.processMouseEvent(Component.java:6516)
            at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
            at java.awt.Component.processEvent(Component.java:6281)
            at java.awt.Container.processEvent(Container.java:2229)
            at java.awt.Component.dispatchEventImpl(Component.java:4872)
            at java.awt.Container.dispatchEventImpl(Container.java:2287)
            at java.awt.Component.dispatchEvent(Component.java:4698)
            at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
            at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
            at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
            at java.awt.Container.dispatchEventImpl(Container.java:2273)
            at java.awt.Window.dispatchEventImpl(Window.java:2719)
            at java.awt.Component.dispatchEvent(Component.java:4698)
            at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
            at java.awt.EventQueue.access$200(EventQueue.java:103)
            at java.awt.EventQueue$3.run(EventQueue.java:694)
            at java.awt.EventQueue$3.run(EventQueue.java:692)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
            at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
            at java.awt.EventQueue$4.run(EventQueue.java:708)
            at java.awt.EventQueue$4.run(EventQueue.java:706)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
            at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
            at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
            at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
            at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
            at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
            at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
            at java.awt.Dialog.show(Dialog.java:1082)
            at java.awt.Component.show(Component.java:1655)
            at java.awt.Component.setVisible(Component.java:1607)
            at java.awt.Window.setVisible(Window.java:1014)
            at java.awt.Dialog.setVisible(Dialog.java:1005)

    "RMI TCP Connection(11)-127.0.0.1" daemon prio=5 tid=0x00007fb59989a800 nid=0x11f03 runnable [0x000000011a78f000]
       java.lang.Thread.State: RUNNABLE
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:152)
        at java.net.SocketInputStream.read(SocketInputStream.java:122)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
        - locked <0x00000007f61dbab8> (a java.io.BufferedInputStream)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:538)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

       Locked ownable synchronizers:
        - <0x00000007fecbf608> (a java.util.concurrent.ThreadPoolExecutor$Worker)

    "RMI TCP Connection(9)-127.0.0.1" daemon prio=5 tid=0x00007fb599404800 nid=0x11d03 runnable [0x000000011a68c000]
       java.lang.Thread.State: RUNNABLE
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:152)
        at java.net.SocketInputStream.read(SocketInputStream.java:122)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
        - locked <0x00000007f635acf0> (a java.io.BufferedInputStream)
        at java.io.FilterInputStream.read(FilterInputStream.java:83)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:538)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

       Locked ownable synchronizers:
        - <0x00000007fecc0c90> (a java.util.concurrent.ThreadPoolExecutor$Worker)

    "RMI TCP Accept-0" daemon prio=5 tid=0x00007fb59cb8a000 nid=0xdb4f runnable [0x0000000117eb6000]
       java.lang.Thread.State: RUNNABLE
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
        at java.net.ServerSocket.implAccept(ServerSocket.java:530)
        at java.net.ServerSocket.accept(ServerSocket.java:498)
        at sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:52)
        at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:388)
        at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:360)
        at java.lang.Thread.run(Thread.java:745)

       Locked ownable synchronizers:
        - None

    "Java Plug-In Pipe Worker Thread (Client-Side)" daemon prio=5 tid=0x00007fb59a137800 nid=0xab07 runnable [0x000000010f0f8000]
       java.lang.Thread.State: RUNNABLE
        at com.sun.deploy.net.socket.UnixSocketImpl.unStreamSocketRead(Native Method)
        at com.sun.deploy.net.socket.UnixDomainSocket.read(Unknown Source)
        at com.sun.deploy.net.socket.UnixDomainSocket.read(Unknown Source)
        at sun.plugin2.ipc.unix.DomainSocketNamedPipe.read(Unknown Source)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.read(Unknown Source)
        at sun.plugin2.message.transport.NamedPipeTransport$SerializerImpl.readByte(Unknown Source)
        at sun.plugin2.message.AbstractSerializer.readInt(Unknown Source)
        at sun.plugin2.message.transport.SerializingTransport.read(Unknown Source)
        at sun.plugin2.message.Pipe$WorkerThread.run(Unknown Source)

       Locked ownable synchronizers:
        - None

    "AppKit Thread" daemon prio=5 tid=0x00007fb5990b0800 nid=0xd07 runnable [0x00007fff5e484000]
       java.lang.Thread.State: RUNNABLE
        at sun.lwawt.macosx.LWCToolkit.doAWTRunLoop(Native Method)
        at sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:570)
        at sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:511)
        at sun.lwawt.macosx.CAccessibility.invokeAndWait(CAccessibility.java:75)
        at sun.lwawt.macosx.CAccessibility.accessibilityHitTest(CAccessibility.java:388)

       Locked ownable synchronizers:
        - None

它卡在本地方法 CAccessible.selectionChanged() 中。

挂起是不可预测的，但总是在用户使用对话框时发生。 挂起从 Java 7 Update 55 开始，旧的 java 版本或其他操作系统(windows、linux)运行没有这个问题。

操作系统 = Mac OS X 10.9.4

Java = 从 Java 7u55 开始，在 7u67 和 Java 8 模拟。

我找不到关于这个问题的任何信息，有什么帮助吗？谢谢...

Answer 1

在 Java 8u65 中遇到这个问题。遇到这张站立的 OpenJDK 票:

https://bugs.openjdk.java.net/browse/JDK-8068222

错误报告的评论提到问题可能来自 OSX 的 VoiceOver 辅助功能。禁用画外音无助于解决问题，并且线程锁定继续发生，最终完全锁定应用程序。

然而，通过进一步搜索，我发现了这个 SO question这暗示了应用程序可访问性问题的可能问题。我按照该帖子中的答案禁用了 System Preferences > Security & Privacy > Accessibility 中的所有应用程序，并且没有再次出现错误。通过一个接一个地重新启用应用程序并随着时间的推移进行测试，我能够识别出有问题的应用程序。这不是一个理想的解决方案，但对我来说是一个功能性的解决方法。