1 /*
   2  * Copyright (c) 2019, 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_SHENANDOAHBARRIERSETNMETHOD_HPP
  25 #define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSETNMETHOD_HPP
  26 
  27 #include "gc/shared/barrierSetNMethod.hpp"
  28 #include "memory/allocation.hpp"
  29 
  30 class nmethod;
  31 class ShenandoahHeap;
  32 
  33 class ShenandoahBarrierSetNMethod : public BarrierSetNMethod {
  34 private:
  35   ShenandoahHeap* _heap;
  36 
  37 protected:
  38   virtual int disarmed_value() const;
  39   virtual bool nmethod_entry_barrier(nmethod* nm);
  40 
  41 public:
  42   ShenandoahBarrierSetNMethod(ShenandoahHeap* heap) : _heap(heap) {
  43   }
  44 
  45   virtual ByteSize thread_disarmed_offset() const;
  46 };
  47 
  48 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSETNMETHOD_HPP