if (true) { doMarkGreyPhase(); doScanPhase(); doCollectPhase(); }
  protected void allRelease(int id) {    processIncBufs();//     VM.sysWrite("processed incs\n");    if (id == 1)      rcCollector.decrementPhase();    VM_CollectorThread.gcBarrier.rendezvous();    processDecBufs();    if (refCountCycleDetection) {      processCycleBufs();      processFreeBufs();    }  }