VM.assert(handle != -1);
VM._assert(handle != -1);
  public void resizeCounters(int countersNeeded)  {    // Confirm that counters have been initialized (using initializeCounters(int))    if (VM.VerifyAssertions)      VM.assert(handle != -1);        counterManager.resizeCounterSpace(this.getHandle(),countersNeeded);    numCounters = countersNeeded;  }