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_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(C2AtomicParseAccess& access, Node* expected_val,
  58                                                Node* new_val, const Type* value_type) const;
  59   virtual Node* atomic_cmpxchg_bool_at_resolved(C2AtomicParseAccess& access, Node* expected_val,
  60                                                 Node* new_val, const Type* value_type) const;
  61   virtual Node* atomic_xchg_at_resolved(C2AtomicParseAccess& access, Node* new_val, const Type* value_type) const;
  62 };
  63 
  64 #endif // SHARE_GC_SHARED_C2_MODREFBARRIERSETC2_HPP