1 /*
 2  * Copyright (c) 2018, 2022, Red Hat, Inc. 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 
25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHRUNTIME_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHRUNTIME_HPP
27 
28 #include "memory/allStatic.hpp"
29 #include "oops/oopsHierarchy.hpp"
30 
31 class JavaThread;
32 class oopDesc;
33 
34 class ShenandoahRuntime : public AllStatic {
35 public:
36   static void arraycopy_barrier_oop(oop* src, oop* dst, size_t length);
37   static void arraycopy_barrier_narrow_oop(narrowOop* src, narrowOop* dst, size_t length);
38 
39   static void write_barrier_pre(oopDesc* orig);
40   static void write_barrier_pre_c2(oopDesc* orig);
41 
42   static oopDesc* load_reference_barrier_strong(oopDesc* src, oop* load_addr);
43   static oopDesc* load_reference_barrier_strong_narrow(oopDesc* src, narrowOop* load_addr);
44 
45   static oopDesc* load_reference_barrier_weak(oopDesc* src, oop* load_addr);
46   static oopDesc* load_reference_barrier_weak_narrow(oopDesc* src, narrowOop* load_addr);
47 
48   static oopDesc* load_reference_barrier_phantom(oopDesc* src, oop* load_addr);
49   static oopDesc* load_reference_barrier_phantom_narrow(oopDesc* src, narrowOop* load_addr);
50 
51   static void clone_barrier(oopDesc* src);
52 };
53 
54 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHRUNTIME_HPP