!7

import com.sun.management.*;

sclass GCNotification > DynPrintLog {
  transient Q q;
  
  void start {
    q = startQ("GC Notification");
    ownTimer(onGC(voidfunc(final GarbageCollectionNotificationInfo info) { q.add(r { printInfo(info) }) }));
  }
  
  void printInfo(GarbageCollectionNotificationInfo info) {
    print();
    GcInfo gcInfo = info.getGcInfo();
    print("GC! " + gcInfo.getDuration() + " ms @ " + localTimeWithSeconds());
    print();
    print("  Cause:     " + info.getGcCause());
    print("  Collector: " + info.getGcName());
    print("  Action:    " + info.getGcAction());
    print();
  }
}