src/hotspot/share/gc/g1/g1CardTableEntryClosure.hpp
author chegar
Thu, 17 Oct 2019 20:53:35 +0100
branchdatagramsocketimpl-branch
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parent 54970 src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp@76d3d96a8bc2
child 58679 9c3209ff7550
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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_GC_G1_G1CARDTABLEENTRYCLOSURE_HPP
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#define SHARE_GC_G1_G1CARDTABLEENTRYCLOSURE_HPP
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#include "gc/shared/cardTable.hpp"
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#include "gc/shared/ptrQueue.hpp"
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#include "memory/allocation.hpp"
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// A closure class for processing card table entries.  Note that we don't
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// require these closure objects to be stack-allocated.
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class G1CardTableEntryClosure: public CHeapObj<mtGC> {
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public:
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  typedef CardTable::CardValue CardValue;
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  // Process the card whose card table entry is "card_ptr".
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  virtual void do_card_ptr(CardValue* card_ptr, uint worker_id) = 0;
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  // Process all the card_ptrs in node.
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  void apply_to_buffer(BufferNode* node, size_t buffer_size, uint worker_id) {
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    void** buffer = BufferNode::make_buffer_from_node(node);
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    for (size_t i = node->index(); i < buffer_size; ++i) {
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      CardValue* card_ptr = static_cast<CardValue*>(buffer[i]);
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      do_card_ptr(card_ptr, worker_id);
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    }
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  }
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};
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#endif // SHARE_GC_G1_G1CARDTABLEENTRYCLOSURE_HPP