1 /*
2 * Copyright (c) 2015, 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
21 * questions.
22 */
23
24 #ifndef SHARE_GC_X_XBARRIERSET_HPP
25 #define SHARE_GC_X_XBARRIERSET_HPP
26
27 #include "gc/shared/barrierSet.hpp"
28
29 class XBarrierSetAssembler;
30
31 class XBarrierSet : public BarrierSet {
32 public:
33 XBarrierSet();
34
35 static XBarrierSetAssembler* assembler();
36 static bool barrier_needed(DecoratorSet decorators, BasicType type);
37
38 virtual void on_thread_create(Thread* thread);
39 virtual void on_thread_destroy(Thread* thread);
40 virtual void on_thread_attach(Thread* thread);
41 virtual void on_thread_detach(Thread* thread);
42
43 virtual void print_on(outputStream* st) const;
44
45 template <DecoratorSet decorators, typename BarrierSetT = XBarrierSet>
46 class AccessBarrier : public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
47 private:
48 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
49
50 template <DecoratorSet expected>
51 static void verify_decorators_present();
52
53 template <DecoratorSet expected>
54 static void verify_decorators_absent();
55
56 static oop* field_addr(oop base, ptrdiff_t offset);
57
58 template <typename T>
59 static oop load_barrier_on_oop_field_preloaded(T* addr, oop o);
60
61 template <typename T>
62 static oop load_barrier_on_unknown_oop_field_preloaded(oop base, ptrdiff_t offset, T* addr, oop o);
63
64 public:
65 //
66 // In heap
67 //
68 template <typename T>
69 static oop oop_load_in_heap(T* addr);
70 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
71
72 template <typename T>
73 static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
74 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
75
76 template <typename T>
77 static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
78 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
79
80 template <typename T>
81 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
82 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
83 size_t length);
84
85 static void clone_in_heap(oop src, oop dst, size_t size);
86
87 //
88 // Not in heap
89 //
90 template <typename T>
91 static oop oop_load_not_in_heap(T* addr);
92
93 template <typename T>
94 static oop oop_atomic_cmpxchg_not_in_heap(T* addr, oop compare_value, oop new_value);
95
96 template <typename T>
97 static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
98 };
99 };
100
101 template<> struct BarrierSet::GetName<XBarrierSet> {
102 static const BarrierSet::Name value = BarrierSet::XBarrierSet;
103 };
104
105 template<> struct BarrierSet::GetType<BarrierSet::XBarrierSet> {
106 typedef ::XBarrierSet type;
107 };
108
109 #endif // SHARE_GC_X_XBARRIERSET_HPP