ClassCache.java

    protected Class<T> defineClass(ClassGenerator classGenerator) {
        // attempt to load from classloaders
        String className = classGenerator.name();
        Class contents = null;
        try {
            contents = getClassLoader().loadClass(className);
            if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                System.err.println("found jitted code in classloader: " + className);
            }
        } catch (ClassNotFoundException cnfe) {
            if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                System.err.println("no jitted code in classloader for method " + classGenerator + " at class: " + className);
            }
            // proceed to define in-memory
        }
        OneShotClassLoader oneShotCL = new OneShotClassLoader(getClassLoader());
        classGenerator.generate();
        contents = oneShotCL.defineClass(classGenerator.name(), classGenerator.bytecode());
        classLoadCount.incrementAndGet();

        return contents;
    }

Ruby.java

                // FIXME: duplicated from ClassCache
                Class contents;
                try {
                    contents = jrubyClassLoader.loadClass(className);
                    if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                        System.err.println("found jitted code for " + filename + " at class: " + className);
                    }
                    script = (Script)contents.newInstance();
                    readStream = new ByteArrayInputStream(buffer);
                } catch (ClassNotFoundException cnfe) {
                    if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                        System.err.println("no jitted code in classloader for file " + filename + " at class: " + className);
                    }
                } catch (InstantiationException ie) {
                    if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                        System.err.println("jitted code could not be instantiated for file " + filename + " at class: " + className);
                    }
                } catch (IllegalAccessException iae) {
                    if (RubyInstanceConfig.JIT_LOADING_DEBUG) {
                        System.err.println("jitted code could not be instantiated for file " + filename + " at class: " + className);
                    }
                }
            } catch (IOException ioe) {
                // TODO: log something?
            }