btrace VisualVM的接口需要ASM 5

Question

當我運行這個簡單的Java8程序

package test; 

public class TraceInt { 
public static void main(String args[]) throws InterruptedException{ 
    TraceInt ti = new TraceInt(); 
    while(true){ 
     Integer.valueOf((int)System.currentTimeMillis()); 
     ti.sleep(1000); 
     //System.getProperty("user.dir"); 
    } 
} 

public void sleep(int millis){ 
    try { 
     Thread.sleep(millis); 
    } catch (InterruptedException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
} 
} 

和反對這種btrace腳本它

@OnMethod(
    clazz = "/.*/", 
    method = "/java.lang.*/", 
    location = @Location(value = Kind.ENTRY, where = Where.BEFORE) 
) 
public static void onEntry(Object obj) { 
    println(Strings.strcat("on entry: ", identityStr(obj))); 
} 

我得到這個錯誤的程序

java.lang.IllegalArgumentException: INVOKESPECIAL/STATIC on interfaces require ASM 5 
at com.sun.btrace.org.objectweb.asm.MethodVisitor.visitMethodInsn(Unknown Source) 
at com.sun.btrace.util.templates.TemplateExpanderVisitor.visitMethodInsn(TemplateExpanderVisitor.java:85) 
at com.sun.btrace.org.objectweb.asm.MethodVisitor.visitMethodInsn(Unknown Source) 
at com.sun.btrace.org.objectweb.asm.ClassReader.a(Unknown Source) 
at com.sun.btrace.org.objectweb.asm.ClassReader.b(Unknown Source) 
at com.sun.btrace.org.objectweb.asm.ClassReader.accept(Unknown Source) 
at com.sun.btrace.org.objectweb.asm.ClassReader.accept(Unknown Source) 
at com.sun.btrace.runtime.InstrumentUtils.accept(InstrumentUtils.java:66) 
at com.sun.btrace.runtime.InstrumentUtils.accept(InstrumentUtils.java:62) 
at com.sun.btrace.agent.Client.instrument(Client.java:392) 
at com.sun.btrace.agent.Client.doTransform(Client.java:213) 
at com.sun.btrace.agent.Client.transform(Client.java:165) 
at sun.instrument.TransformerManager.transform(TransformerManager.java:188) 
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428) 
at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method) 
at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144) 
at com.sun.btrace.agent.Main$4.run(Main.java:464) 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:745) 

任何幫助讚賞

Answer 1

過了一段時間，我意識到我正在使用舊版本的btrace反對Java8。只要我搬到最新版本，一切都很好。