1 /*
   2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 #ifndef SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
  25 #define SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
  26 
  27 #include "memory/allocation.hpp"
  28 
  29 class GraphKit;
  30 class Node;
  31 class TypeFunc;
  32 
  33 class ShenandoahBarrierSetC2 : public CHeapObj<mtGC> {
  34 public:
  35   static ShenandoahBarrierSetC2* bsc2();
  36 
  37   static bool is_shenandoah_lrb_call(Node* call);
  38   static bool is_shenandoah_state_load(Node* n);
  39 
  40   static const TypeFunc* shenandoah_load_reference_barrier_Type();
  41 
  42   Node* step_over_gc_barrier(Node* c);
  43 
  44   Node* load_reference_barrier(GraphKit* kit, Node* n) const;
  45 };
  46 
  47 #endif // SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP