((VM_HardwarePerformanceMonitor)producer).notifyExit(value);
hpm.notifyExit(value);
  public void notifyExit(int value)  {    if (VM_HardwarePerformanceMonitors.hpm_trace) {      if(VM_HardwarePerformanceMonitors.verbose>=2) { 	VM.sysWriteln("VM_TraceWriter.notifyExit(",value,") PID ",pid);       }      if (trace_file == null) {	VM.sysWriteln("\n***VM_TraceWriter.notifyExit() PID ",pid," trace_file == null! notifyStartup never called!***\n");	VM.sysExit(-1);      }      ((VM_HardwarePerformanceMonitor)producer).notifyExit(value);    }  }