view test/runtime/6626217/Loader2.java @ 4181:319860ae697a

Simplify FrameMap: make offsets of spill slots and outgoing parameters independent so that they can be allocated at the same time, eliminating the separate phases. This makes the separate StackBlock unnecesary. Change CiStackSlot to use byte offsets instead of spill slot index. This makes CiTarget.spillSlotSize unnecessary.
author Christian Wimmer <Christian.Wimmer@Oracle.com>
date Mon, 02 Jan 2012 14:16:08 -0800
parents 495caa35b1b5
children
line wrap: on
line source

import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
public class Loader2 extends ClassLoader {
  int _recur;
  public void print( String msg ) {
    for( int i=0; i<_recur; i++ )
      System.out.print("  ");
    System.out.println(">>Loader2>> "+msg);
  }

  protected Class findClass2(String name) throws ClassNotFoundException {
    print("Fetching the implementation of "+name);
    int old = _recur;
    try {
      FileInputStream fi = new FileInputStream(name+".impl2");
      byte result[] = new byte[fi.available()];
      fi.read(result);

      print("DefineClass1 on "+name);
      _recur++;
      Class clazz = defineClass(name, result, 0, result.length);
      _recur = old;
      print("Returning newly loaded class.");
      return clazz;
    } catch (Exception e) {
      _recur = old;
      print("Not found on disk.");
      // If we caught an exception, either the class was not found or
      // it was unreadable by our process.
      return null;
      //throw new ClassNotFoundException(e.toString());
    }
  }

  protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException  {
    // Attempt a disk load first
    Class c = findClass2(name);
    if( c == null ) {
      // check if the class has already been loaded
      print("Checking for prior loaded class "+name);
      c = findLoadedClass(name);
      print("Letting super-loader load "+name);
      int old = _recur;
      _recur++;
      c = super.loadClass(name, false);
      _recur=old;
    }
    if (resolve) { print("Resolving class "+name); resolveClass(c); }
    print("Returning clazz "+c.getClassLoader()+":"+name);
    return c;
  }
}