/**
   * Perform a (global) collection phase.
   *
   * @param phaseId Collection phase to execute.
   */
  @NoInline
  public void collectionPhase(short phaseId) {
    if (phaseId == SET_COLLECTION_KIND) {
      super.collectionPhase(phaseId);
      gcFullHeap = requiresFullHeapCollection();
      return;
    }

    if (phaseId == PREPARE) {
      nurserySpace.prepare(true);
      if (traceFullHeap()) {
        if (gcFullHeap) {
          if (Stats.gatheringStats()) fullHeap.set();
          fullHeapTime.start();
        }
        super.collectionPhase(phaseId);

        // we can throw away the remsets (but not modbuf) for a full heap GC
        remsetPool.clearDeque(1);
        arrayRemsetPool.clearDeque(2);
      }
      return;
    }

    if (phaseId == CLOSURE) {
      if (!traceFullHeap()) {
        nurseryTrace.prepare();
      }
      return;
    }

    if (phaseId == RELEASE) {
      nurserySpace.release();
      modbufPool.clearDeque(1);
      remsetPool.clearDeque(1);
      arrayRemsetPool.clearDeque(2);
      if (!traceFullHeap()) {
        nurseryTrace.release();
      } else {
        super.collectionPhase(phaseId);
        if (gcFullHeap) fullHeapTime.stop();
      }
      nextGCFullHeap = (getPagesAvail() < Options.nurserySize.getMinNursery());
      return;
    }

    super.collectionPhase(phaseId);
  }
Beispiel #2
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 /** Register specialized methods. */
 @Interruptible
 protected void registerSpecializedMethods() {
   TransitiveClosure.registerSpecializedScan(SCAN_NURSERY, GenNurseryTraceLocal.class);
   super.registerSpecializedMethods();
 }
Beispiel #3
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 /**
  * Print pre-collection statistics. In this class we prefix the output indicating whether the
  * collection was full heap or not.
  */
 public void printPreStats() {
   if ((Options.verbose.getValue() >= 1) && (gcFullHeap)) Log.write("[Full heap]");
   super.printPreStats();
 }