1 /*
 2  * Copyright (c) 2018, 2019, 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
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23  */
24 
25 #ifndef SHARE_GC_SHARED_BARRIERSETNMETHOD_HPP
26 #define SHARE_GC_SHARED_BARRIERSETNMETHOD_HPP
27 
28 #include "memory/allocation.hpp"
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/sizes.hpp"
31 
32 class nmethod;
33 
34 class BarrierSetNMethod: public CHeapObj<mtGC> {


35   void deoptimize(nmethod* nm, address* return_addr_ptr);
36   int disarmed_value() const;
37 
38 public:

39   bool supports_entry_barrier(nmethod* nm);
40 
41   virtual bool nmethod_entry_barrier(nmethod* nm) = 0;
42   virtual ByteSize thread_disarmed_offset() const = 0;
43   virtual int* disarmed_value_address() const = 0;


44 
45   static int nmethod_stub_entry_barrier(address* return_address_ptr);
46   bool nmethod_osr_entry_barrier(nmethod* nm);
47   bool is_armed(nmethod* nm);
48   void disarm(nmethod* nm);



49 };
50 
51 
52 #endif // SHARE_GC_SHARED_BARRIERSETNMETHOD_HPP
--- EOF ---