instrumentation

问题 New to this website, and excited to share my first question :) Ok so I'm going to be explaining what I have set-up currently so that my question can be understood better. I have 2 java applications: Logic Application (Where all the heavy load occurs) Instrumented Application (Application instrumented into a running game) What I do with these 2 applications is extract information from a game using the Instrumented Application then send it to the Logic Application. The extraction of information

问题 I created a jar from a single .class and I mentioned in the manifest the Premain-class, the jar was generated as expected but when I try to run a program that uses the class from that jar , I get an error MANIFEST.MD Premain-Class : Agent Agent.java import java.lang.instrument.Instrumentation; public class Agent{ private static Instrumentation inst; public static void premain(String paramString, Instrumentation paramInstrumentation) { inst = paramInstrumentation; } public static long size

问题 I created a jar from a single .class and I mentioned in the manifest the Premain-class, the jar was generated as expected but when I try to run a program that uses the class from that jar , I get an error MANIFEST.MD Premain-Class : Agent Agent.java import java.lang.instrument.Instrumentation; public class Agent{ private static Instrumentation inst; public static void premain(String paramString, Instrumentation paramInstrumentation) { inst = paramInstrumentation; } public static long size

问题 I created a jar from a single .class and I mentioned in the manifest the Premain-class, the jar was generated as expected but when I try to run a program that uses the class from that jar , I get an error MANIFEST.MD Premain-Class : Agent Agent.java import java.lang.instrument.Instrumentation; public class Agent{ private static Instrumentation inst; public static void premain(String paramString, Instrumentation paramInstrumentation) { inst = paramInstrumentation; } public static long size

问题 I am working on a REPL for a custom programming language of mine. It is implemented on top of the compiler, which it uses to generate the bytecode for the input and convert it to a Class<?> instance using the sun.misc.Unsafe.defineClass(String, byte[], int, int, ClassLoader, ProtectionDomain) method. The relevant code looks like this (irrelevant parts like exception handling omitted): void compileAndLoad(List<ICompilable> compilables) { List<Class<?>> classes = ...; for (ICompilable c :

问题 when I run my instrumentation tests against the debug version of my app, leak canary will block the UI thread and cause the instrumentation test to fail. I had to revert to the old version. Is there any way to avoid the leakcanary UI or companion app (not sure what is blocking the UI thread) from running, while running the instrumentation tests? Thanks 回答1: See the doc: https://square.github.io/leakcanary/recipes/#running-leakcanary-in-instrumentation-tests LeakCanary automatically disables

问题 I am writing unit tests. I am extending the unit tests classes from ActivityInstrumentationTestCase2. I was running tests finely. But I don't know what happened. Now when I am running unit test are not running and it throws following exception `No tests were found` Please Help. Here is my unit test class public class UnitTest extends ActivityInstrumentationTestCase2<TREResults> { TREResults trainingReinforcementResults; public UnitTest(Class<TREResults>activityClass) { super(activityClass); }

问题 I wrote a javaagent as below to capture the execution time of the execute method of the apache org.apache.http.client.HttpClient . It is capturing the time, but it's running three times. import java.lang.instrument.Instrumentation; import net.bytebuddy.agent.builder.AgentBuilder; import net.bytebuddy.implementation.MethodDelegation; import static net.bytebuddy.matcher.ElementMatchers.isMethod; import static net.bytebuddy.matcher.ElementMatchers.isAbstract; import static net.bytebuddy.matcher

问题 I would like to add field along with its getter/setter in compiled Java classes which is loaded in a Spring boot application. I was able to modify the class using JavaAssist and ASM. But the problem is it is not letting me reload the class after modification, since this is already been loaded. I tried to write a class extending java.lang.ClassLoader but custom classloader is not getting called. Also, I checked java's Instrumentation API which clearly states The retransformation may change

问题 I would like to add field along with its getter/setter in compiled Java classes which is loaded in a Spring boot application. I was able to modify the class using JavaAssist and ASM. But the problem is it is not letting me reload the class after modification, since this is already been loaded. I tried to write a class extending java.lang.ClassLoader but custom classloader is not getting called. Also, I checked java's Instrumentation API which clearly states The retransformation may change