1 /*
2 * Copyright (c) 2015, 2023, 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_Z_ZBARRIERSET_HPP
25 #define SHARE_GC_Z_ZBARRIERSET_HPP
26
27 #include "gc/shared/barrierSet.hpp"
28 #include "gc/z/zAddress.hpp"
29
30 class ZBarrierSetAssembler;
31
32 class ZBarrierSet : public BarrierSet {
33 private:
34 static zpointer store_good(oop obj);
35
36 public:
37 ZBarrierSet();
38
39 static ZBarrierSetAssembler* assembler();
40 static bool barrier_needed(DecoratorSet decorators, BasicType type);
41
42 static void clone_obj_array(objArrayOop src, objArrayOop dst);
43
44 virtual void on_thread_create(Thread* thread);
45 virtual void on_thread_destroy(Thread* thread);
46 virtual void on_thread_attach(Thread* thread);
47 virtual void on_thread_detach(Thread* thread);
48
49 virtual void on_slowpath_allocation_exit(JavaThread* thread, oop new_obj);
50
51 virtual void print_on(outputStream* st) const;
52
53 template <DecoratorSet decorators, typename BarrierSetT = ZBarrierSet>
54 class AccessBarrier : public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
55 private:
56 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
57
58 template <DecoratorSet expected>
59 static void verify_decorators_present();
60
61 template <DecoratorSet expected>
62 static void verify_decorators_absent();
63
64 static zpointer* field_addr(oop base, ptrdiff_t offset);
65
66 static zaddress load_barrier(zpointer* p, zpointer o);
67 static zaddress load_barrier_on_unknown_oop_ref(oop base, ptrdiff_t offset, zpointer* p, zpointer o);
68
69 static void store_barrier_heap_with_healing(zpointer* p);
70 static void store_barrier_heap_without_healing(zpointer* p);
71 static void no_keep_alive_store_barrier_heap(zpointer* p);
72
73 static void store_barrier_native_with_healing(zpointer* p);
74 static void store_barrier_native_without_healing(zpointer* p);
75
76 static void unsupported();
77 static zaddress load_barrier(narrowOop* p, zpointer o) { unsupported(); return zaddress::null; }
78 static zaddress load_barrier_on_unknown_oop_ref(oop base, ptrdiff_t offset, narrowOop* p, zpointer o) { unsupported(); return zaddress::null; }
79 static void store_barrier_heap_with_healing(narrowOop* p) { unsupported(); }
80 static void store_barrier_heap_without_healing(narrowOop* p) { unsupported(); }
81 static void no_keep_alive_store_barrier_heap(narrowOop* p) { unsupported(); }
82 static void store_barrier_native_with_healing(narrowOop* p) { unsupported(); }
83 static void store_barrier_native_without_healing(narrowOop* p) { unsupported(); }
84
85 static zaddress oop_copy_one_barriers(zpointer* dst, zpointer* src);
86 static bool oop_copy_one_check_cast(zpointer* dst, zpointer* src, Klass* dst_klass);
87 static void oop_copy_one(zpointer* dst, zpointer* src);
88
89 static bool oop_arraycopy_in_heap_check_cast(zpointer* dst, zpointer* src, size_t length, Klass* dst_klass);
90 static bool oop_arraycopy_in_heap_no_check_cast(zpointer* dst, zpointer* src, size_t length);
91
92 public:
93 //
94 // In heap
95 //
96 static oop oop_load_in_heap(zpointer* p);
97 static oop oop_load_in_heap(oop* p) { return oop_load_in_heap((zpointer*)p); };
98 static oop oop_load_in_heap(narrowOop* p) { unsupported(); return nullptr; }
99
100 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
101
102 static void oop_store_in_heap(zpointer* p, oop value);
103 static void oop_store_in_heap(oop* p, oop value) { oop_store_in_heap((zpointer*)p, value); }
104 static void oop_store_in_heap(narrowOop* p, oop value) { unsupported(); }
105 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
106
107 static void oop_store_not_in_heap(zpointer* p, oop value);
108 static void oop_store_not_in_heap(oop* p, oop value) { oop_store_not_in_heap((zpointer*)p, value); }
109 static void oop_store_not_in_heap(narrowOop* p, oop value) { unsupported(); }
110 static void oop_store_not_in_heap_at(oop base, ptrdiff_t offset, oop value);
111
112 static oop oop_atomic_cmpxchg_in_heap(zpointer* p, oop compare_value, oop new_value);
113 static oop oop_atomic_cmpxchg_in_heap(oop* p, oop compare_value, oop new_value) { return oop_atomic_cmpxchg_in_heap((zpointer*)p, compare_value, new_value); }
114 static oop oop_atomic_cmpxchg_in_heap(narrowOop* p, oop compare_value, oop new_value) { unsupported(); return nullptr; }
115 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
116
117 static oop oop_atomic_xchg_in_heap(zpointer* p, oop new_value);
118 static oop oop_atomic_xchg_in_heap(oop* p, oop new_value) { return oop_atomic_xchg_in_heap((zpointer*)p, new_value); }
119 static oop oop_atomic_xchg_in_heap(narrowOop* p, oop new_value) { unsupported(); return nullptr; }
120 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
121
122 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, zpointer* src_raw,
123 arrayOop dst_obj, size_t dst_offset_in_bytes, zpointer* dst_raw,
124 size_t length);
125 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, oop* src_raw,
126 arrayOop dst_obj, size_t dst_offset_in_bytes, oop* dst_raw,
127 size_t length) {
128 return oop_arraycopy_in_heap(src_obj, src_offset_in_bytes, (zpointer*)src_raw,
129 dst_obj, dst_offset_in_bytes, (zpointer*)dst_raw,
130 length);
131 }
132 static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, narrowOop* src_raw,
133 arrayOop dst_obj, size_t dst_offset_in_bytes, narrowOop* dst_raw,
134 size_t length) { unsupported(); return false; }
135
136 static void clone_in_heap(oop src, oop dst, size_t size);
137
138 //
139 // Not in heap
140 //
141 static oop oop_load_not_in_heap(zpointer* p);
142 static oop oop_load_not_in_heap(oop* p);
143 static oop oop_load_not_in_heap(narrowOop* p) { unsupported(); return nullptr; }
144
145 static oop oop_atomic_cmpxchg_not_in_heap(zpointer* p, oop compare_value, oop new_value);
146 static oop oop_atomic_cmpxchg_not_in_heap(oop* p, oop compare_value, oop new_value) {
147 return oop_atomic_cmpxchg_not_in_heap((zpointer*)p, compare_value, new_value);
148 }
149 static oop oop_atomic_cmpxchg_not_in_heap(narrowOop* addr, oop compare_value, oop new_value) { unsupported(); return nullptr; }
150
151 static oop oop_atomic_xchg_not_in_heap(zpointer* p, oop new_value);
152 static oop oop_atomic_xchg_not_in_heap(oop* p, oop new_value) { return oop_atomic_xchg_not_in_heap((zpointer*)p, new_value); }
153 static oop oop_atomic_xchg_not_in_heap(narrowOop* p, oop new_value) { unsupported(); return nullptr; }
154 };
155 };
156
157 template<> struct BarrierSet::GetName<ZBarrierSet> {
158 static const BarrierSet::Name Value = BarrierSet::ZBarrierSet;
159 };
160
161 template<> struct BarrierSet::GetType<BarrierSet::ZBarrierSet> {
162 typedef ::ZBarrierSet type;
163 };
164
165 #endif // SHARE_GC_Z_ZBARRIERSET_HPP