PreMain

java.lang.Object

org.jacoco.agent.rt.internal.PreMain

public final class PreMain extends Object

The agent which is referred as the Premain-Class. The agent configuration is provided with the agent parameters in the command line.

Constructor Summary

Constructors

Modifier

Constructor

Description

private

PreMain()
Method Summary

Modifier and Type

Method

Description

private static IRuntime

createRuntime(Instrumentation inst)

private static Object

getModule(Class<?> cls)

static void

premain(String options, Instrumentation inst)

This method is called by the JVM to initialize Java agents.

private static boolean

redefineJavaBaseModule(Instrumentation instrumentation)

Opens java.base module for InjectedClassRuntime when executed on Java 9 JREs or higher.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- PreMain
  
  private PreMain()
Method Details
- premain
  
  public static void premain(String options, Instrumentation inst) throws Exception
  
  This method is called by the JVM to initialize Java agents.
  
  Parameters:
  
  options - agent options
  
  inst - instrumentation callback provided by the JVM
  
  Throws:
  
  Exception - in case initialization fails
- createRuntime
  
  private static IRuntime createRuntime(Instrumentation inst) throws Exception
  
  Throws:
  
  Exception
- redefineJavaBaseModule
  
  private static boolean redefineJavaBaseModule(Instrumentation instrumentation) throws Exception
  
  Opens java.base module for InjectedClassRuntime when executed on Java 9 JREs or higher.
  
  Returns:
  
  true when running on Java 9 or higher, false otherwise
  
  Throws:
  
  Exception - if unable to open
- getModule
  
  private static Object getModule(Class<?> cls) throws Exception
  
  Returns:
  
  cls.getModule()
  
  Throws:
  
  Exception