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 enum OopCopyCheckStatus {
54 oop_copy_check_ok = 0, // oop array copy sucessful
55 oop_copy_check_class_cast = 1, // oop array copy failed subtype check (ARRAYCOPY_CHECKCAST)
56 oop_copy_check_null = 2 // oop array copy failed null check (ARRAYCOPY_NOTNULL)
57 };
58
59 template <DecoratorSet decorators, typename BarrierSetT = ZBarrierSet>
60 class AccessBarrier : public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
61 private:
62 typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
63
64 template <DecoratorSet expected>
65 static void verify_decorators_present();
66
67 template <DecoratorSet expected>
68 static void verify_decorators_absent();
69
70 static zpointer* field_addr(oop base, ptrdiff_t offset);
71
72 static zaddress load_barrier(zpointer* p, zpointer o);
73 static zaddress load_barrier_on_unknown_oop_ref(oop base, ptrdiff_t offset, zpointer* p, zpointer o);
74
75 static void store_barrier_heap_with_healing(zpointer* p);
76 static void store_barrier_heap_without_healing(zpointer* p);
77 static void no_keep_alive_store_barrier_heap(zpointer* p);
78
79 static void store_barrier_native_with_healing(zpointer* p);
80 static void store_barrier_native_without_healing(zpointer* p);
81
82 static void unsupported();
83 static zaddress load_barrier(narrowOop* p, zpointer o) { unsupported(); return zaddress::null; }
84 static zaddress load_barrier_on_unknown_oop_ref(oop base, ptrdiff_t offset, narrowOop* p, zpointer o) { unsupported(); return zaddress::null; }
85 static void store_barrier_heap_with_healing(narrowOop* p) { unsupported(); }
86 static void store_barrier_heap_without_healing(narrowOop* p) { unsupported(); }
87 static void no_keep_alive_store_barrier_heap(narrowOop* p) { unsupported(); }
88 static void store_barrier_native_with_healing(narrowOop* p) { unsupported(); }
89 static void store_barrier_native_without_healing(narrowOop* p) { unsupported(); }
90
91 static zaddress oop_copy_one_barriers(zpointer* dst, zpointer* src);
92 static OopCopyCheckStatus oop_copy_one_check_cast(zpointer* dst, zpointer* src, Klass* dst_klass);
93 static OopCopyCheckStatus oop_copy_one(zpointer* dst, zpointer* src);
94
95 static OopCopyCheckStatus oop_arraycopy_in_heap_check_cast(zpointer* dst, zpointer* src, size_t length, Klass* dst_klass);
96 static OopCopyCheckStatus oop_arraycopy_in_heap_no_check_cast(zpointer* dst, zpointer* src, size_t length);
97
98 public:
99 //
100 // In heap
101 //
102 static oop oop_load_in_heap(zpointer* p);
103 static oop oop_load_in_heap(oop* p) { return oop_load_in_heap((zpointer*)p); };
104 static oop oop_load_in_heap(narrowOop* p) { unsupported(); return nullptr; }
105
106 static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
107
108 static void oop_store_in_heap(zpointer* p, oop value);
109 static void oop_store_in_heap(oop* p, oop value) { oop_store_in_heap((zpointer*)p, value); }
110 static void oop_store_in_heap(narrowOop* p, oop value) { unsupported(); }
111 static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
112
113 static void oop_store_not_in_heap(zpointer* p, oop value);
114 static void oop_store_not_in_heap(oop* p, oop value) { oop_store_not_in_heap((zpointer*)p, value); }
115 static void oop_store_not_in_heap(narrowOop* p, oop value) { unsupported(); }
116 static void oop_store_not_in_heap_at(oop base, ptrdiff_t offset, oop value);
117
118 static oop oop_atomic_cmpxchg_in_heap(zpointer* p, oop compare_value, oop new_value);
119 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); }
120 static oop oop_atomic_cmpxchg_in_heap(narrowOop* p, oop compare_value, oop new_value) { unsupported(); return nullptr; }
121 static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
122
123 static oop oop_atomic_xchg_in_heap(zpointer* p, oop new_value);
124 static oop oop_atomic_xchg_in_heap(oop* p, oop new_value) { return oop_atomic_xchg_in_heap((zpointer*)p, new_value); }
125 static oop oop_atomic_xchg_in_heap(narrowOop* p, oop new_value) { unsupported(); return nullptr; }
126 static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
127
128 static void oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, zpointer* src_raw,
129 arrayOop dst_obj, size_t dst_offset_in_bytes, zpointer* dst_raw,
130 size_t length);
131 static void oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, oop* src_raw,
132 arrayOop dst_obj, size_t dst_offset_in_bytes, oop* dst_raw,
133 size_t length) {
134 oop_arraycopy_in_heap(src_obj, src_offset_in_bytes, (zpointer*)src_raw,
135 dst_obj, dst_offset_in_bytes, (zpointer*)dst_raw,
136 length);
137 }
138 static void oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, narrowOop* src_raw,
139 arrayOop dst_obj, size_t dst_offset_in_bytes, narrowOop* dst_raw,
140 size_t length) { unsupported(); }
141
142 static void clone_in_heap(oop src, oop dst, size_t size);
143
144 static void value_copy_in_heap(void* src, void* dst, InlineKlass* md, LayoutKind lk);
145
146 //
147 // Not in heap
148 //
149 static oop oop_load_not_in_heap(zpointer* p);
150 static oop oop_load_not_in_heap(oop* p);
151 static oop oop_load_not_in_heap(narrowOop* p) { unsupported(); return nullptr; }
152
153 static oop oop_atomic_cmpxchg_not_in_heap(zpointer* p, oop compare_value, oop new_value);
154 static oop oop_atomic_cmpxchg_not_in_heap(oop* p, oop compare_value, oop new_value) {
155 return oop_atomic_cmpxchg_not_in_heap((zpointer*)p, compare_value, new_value);
156 }
157 static oop oop_atomic_cmpxchg_not_in_heap(narrowOop* addr, oop compare_value, oop new_value) { unsupported(); return nullptr; }
158
159 static oop oop_atomic_xchg_not_in_heap(zpointer* p, oop new_value);
160 static oop oop_atomic_xchg_not_in_heap(oop* p, oop new_value) { return oop_atomic_xchg_not_in_heap((zpointer*)p, new_value); }
161 static oop oop_atomic_xchg_not_in_heap(narrowOop* p, oop new_value) { unsupported(); return nullptr; }
162 };
163 };
164
165 template<> struct BarrierSet::GetName<ZBarrierSet> {
166 static const BarrierSet::Name Value = BarrierSet::ZBarrierSet;
167 };
168
169 template<> struct BarrierSet::GetType<BarrierSet::ZBarrierSet> {
170 typedef ::ZBarrierSet type;
171 };
172
173 #endif // SHARE_GC_Z_ZBARRIERSET_HPP