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   virtual int* disarmed_value_address() const;

    47 };

    48 

    49 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSETNMETHOD_HPP