Example #1
0
  public static void premain(String args, Instrumentation inst) throws Exception {
    try {
      String[] agentArgs;
      if (args == null) agentArgs = new String[] {""};
      else agentArgs = args.split(",");
      if (!agentArgs[0].equals("instrumenting")) jarFileName = agentArgs[0];
      BaseClassTransformer rct = null;
      rct = new BaseClassTransformer();
      if (agentArgs[0].equals("instrumenting")) {
        initVMClasses = new HashSet<String>();
        for (Class<?> c : inst.getAllLoadedClasses()) {
          ((Set<String>) initVMClasses).add(c.getName());
        }
      }
      if (!agentArgs[0].equals("instrumenting")) {

        inst.addTransformer(rct);
        Tracer.setLocals(new CounterThreadLocal());
        Tracer.overrideAll(true);
        for (Class<?> c : inst.getAllLoadedClasses()) {
          try {
            if (c.isInterface()) continue;
            if (c.isArray()) continue;
            byte[] bytes = rct.getBytes(c.getName());
            if (bytes == null) {
              continue;
            }
            inst.redefineClasses(new ClassDefinition[] {new ClassDefinition(c, bytes)});
          } catch (Throwable e) {
            synchronized (System.err) {
              System.err.println("" + c + " failed...");
              e.printStackTrace();
            }
          }
        }
        Runtime.getRuntime()
            .addShutdownHook(
                new Thread() {
                  public void run() {
                    Tracer.mark();
                    try {
                      PrintStream ps = new PrintStream("bailout.txt");
                      ps.println("Bailouts: " + Tracer.getBailoutCount());
                      ps.close();
                    } catch (Exception e) {
                    }
                    Tracer.unmark();
                  }
                });
        if ("true".equals(System.getProperty("bci.observerOn"))) Tracer.overrideAll(false);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }