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 #ifndef SHARE_GC_Z_ZBARRIERSETNMETHOD_HPP
  25 #define SHARE_GC_Z_ZBARRIERSETNMETHOD_HPP
  26 
  27 #include "gc/shared/barrierSetNMethod.hpp"
  28 #include "memory/allocation.hpp"
  29 
  30 class nmethod;
  31 
  32 class ZBarrierSetNMethod : public BarrierSetNMethod {
  33 protected:
  34   virtual int disarmed_value() const;
  35   virtual bool nmethod_entry_barrier(nmethod* nm);
  36 
  37 public:
  38   virtual ByteSize thread_disarmed_offset() const;
  39   virtual intptr_t disarmed_address() const;
  40 };
  41 
  42 #endif // SHARE_GC_Z_ZBARRIERSETNMETHOD_HPP