1 /*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_SHARED_C2_CARDTABLEBARRIERSETC2_HPP
26 #define SHARE_GC_SHARED_C2_CARDTABLEBARRIERSETC2_HPP
27
28 #include "gc/shared/c2/modRefBarrierSetC2.hpp"
29
30 class CardTableBarrierSetC2: public ModRefBarrierSetC2 {
31 protected:
32 virtual void post_barrier(GraphKit* kit,
33 Node* ctl,
34 Node* store,
35 Node* obj,
36 Node* adr,
37 uint adr_idx,
38 Node* val,
39 BasicType bt,
40 bool use_precise) const;
41
42 Node* byte_map_base_node(GraphKit* kit) const;
43
44 public:
45 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
46 virtual bool array_copy_requires_gc_barriers(bool tightly_coupled_alloc, BasicType type, bool is_clone, bool is_clone_instance, ArrayCopyPhase phase) const;
47
48 bool use_ReduceInitialCardMarks() const;
49 };
50
51 #endif // SHARE_GC_SHARED_C2_CARDTABLEBARRIERSETC2_HPP