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
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23  */
24 
25 #ifndef SHARE_GC_SHARED_C2_MODREFBARRIERSETC2_HPP
26 #define SHARE_GC_SHARED_C2_MODREFBARRIERSETC2_HPP
27 
28 #include "gc/shared/c2/barrierSetC2.hpp"
29 
30 class TypeOopPtr;
31 
32 class ModRefBarrierSetC2: public BarrierSetC2 {
33 protected:
34   virtual void pre_barrier(GraphKit* kit,
35                            bool do_load,
36                            Node* ctl,
37                            Node* obj,
38                            Node* adr,
39                            uint adr_idx,
40                            Node* val,
41                            const TypeOopPtr* val_type,
42                            Node* pre_val,
43                            BasicType bt) const {}
44 
45   virtual void post_barrier(GraphKit* kit,
46                             Node* ctl,
47                             Node* store,
48                             Node* obj,
49                             Node* adr,
50                             uint adr_idx,
51                             Node* val,
52                             BasicType bt,
53                             bool use_precise) const {}
54 
55   virtual Node* store_at_resolved(C2Access& access, C2AccessValue& val) const;
56 
57   virtual Node* atomic_cmpxchg_val_at_resolved(C2AtomicAccess& access, Node* expected_val,
58                                                Node* new_val, const Type* value_type) const;
59   virtual Node* atomic_cmpxchg_bool_at_resolved(C2AtomicAccess& access, Node* expected_val,
60                                                 Node* new_val, const Type* value_type) const;
61   virtual Node* atomic_xchg_at_resolved(C2AtomicAccess& access, Node* new_val, const Type* value_type) const;
62 };
63 
64 #endif // SHARE_GC_SHARED_C2_MODREFBARRIERSETC2_HPP