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src/share/vm/utilities/bitMap.hpp
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rev 8910 : full patch for jfr
@@ -1,7 +1,7 @@
/*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -270,10 +270,19 @@
// Printing
void print_on(outputStream* st) const;
#endif
};
+// A concrete implementation of the the "abstract" BitMap class.
+//
+// The BitMapView is used when the backing storage is managed externally.
+class BitMapView : public BitMap {
+ public:
+ BitMapView() : BitMap((bm_word_t*)NULL, (idx_t)0) {}
+ BitMapView(bm_word_t* map, idx_t size_in_bits) : BitMap(map, size_in_bits) {}
+};
+
// Convenience class wrapping BitMap which provides multiple bits per slot.
class BitMap2D VALUE_OBJ_CLASS_SPEC {
public:
typedef BitMap::idx_t idx_t; // Type used for bit and word indices.
typedef BitMap::bm_word_t bm_word_t; // Element type of array that
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