public static void premain(String agentArgs, Instrumentation inst) throws FileNotFoundException { Config config = Config.readFromFile(Config.DEFAULT_FILE_CONFIG_LOCATION); globalInst = inst; inst.addTransformer(new BasicClassFileTransformer(config)); ResourceMonitor rm = config.getResourceMonitor(); if (rm.isActive() && hardwareThread == null) { // installGCMonitoring(); List<HardwareDaemonWriter> writers = new ArrayList<HardwareDaemonWriter>(); if (rm.isDebug()) { System.out.println("use debug"); writers.add(new HardwareDaemonWriterMockImpl()); } else { System.out.println("not using debug"); } if (rm.isSendToCollector()) try { writers.add(new HardwareDaemonWriterCollectorImpl(config)); } catch (IOException e) { e.printStackTrace(); } hardwareThread = new HardwareDaemon(config, writers); hardwareThread.start(); } }