我在
linux(ubuntu 64bit)上运行jmockit测试时得到AttachNotSupportedException.
Java版本是1.7.0_51.这个JDK来自Oracle.使用ant运行测试(可能不相关)
查看堆栈跟踪.
[junit] [junit] java.lang.RuntimeException: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded [junit] at mockit.internal.startup.JDK6AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(JDK6AgentLoader.java:89) [junit] at mockit.internal.startup.JDK6AgentLoader.loadAgent(JDK6AgentLoader.java:54) [junit] at mockit.internal.startup.Agentinitialization.initializeAccordingToJDKVersion(Agentinitialization.java:21) [junit] at mockit.internal.startup.Startup.initializeIfNeeded(Startup.java:136) [junit] at mockit.internal.startup.Startup.initializeIfPossible(Startup.java:169) [junit] at junit.framework.TestResult.<clinit>(TestResult.java:15) [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:356) [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1165) [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1016) [junit] Caused by: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded [junit] at sun.tools.attach.LinuxVirtualMachine.<init>(LinuxVirtualMachine.java:106) [junit] at mockit.internal.startup.JDK6AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(JDK6AgentLoader.java:79) [junit] ... 8 more [junit] Exception in thread "main" java.lang.ExceptionInInitializerError [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:356) [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1165) [junit] at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1016) [junit] Caused by: java.lang.RuntimeException: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded [junit] at mockit.internal.startup.JDK6AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(JDK6AgentLoader.java:89) [junit] at mockit.internal.startup.JDK6AgentLoader.loadAgent(JDK6AgentLoader.java:54) [junit] at mockit.internal.startup.Agentinitialization.initializeAccordingToJDKVersion(Agentinitialization.java:21) [junit] at mockit.internal.startup.Startup.initializeIfNeeded(Startup.java:136) [junit] at mockit.internal.startup.Startup.initializeIfPossible(Startup.java:169) [junit] at junit.framework.TestResult.<clinit>(TestResult.java:15) [junit] ... 3 more [junit] Caused by: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded [junit] at sun.tools.attach.LinuxVirtualMachine.<init>(LinuxVirtualMachine.java:106) [junit] at mockit.internal.startup.JDK6AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(JDK6AgentLoader.java:79) [junit] ... 8 more [junit] Running chs.caf.cap
它似乎与AttachNotSupportedException while running jMockit tests on IBM JRE有关.但这是在IBM jre上.
解决方法
现在就来解决.
将’-XX：StartAttachListener’添加到jvm参数修复了该问题.
这里讨论类似的问题,分别在https://code.google.com/p/jmockit/issues/detail?id=136和http://mail.openjdk.java.net/pipermail/macosx-port-dev/2013-October/006098.html(讨论jdk7构建中可能的回归)