27 #define SHARE_GC_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
28
29 #include "gc/shared/gc_globals.hpp"
30 #include "gc/shared/gcThreadLocalData.hpp"
31 #include "gc/shared/plab.hpp"
32 #include "gc/shenandoah/mode/shenandoahMode.hpp"
33 #include "gc/shenandoah/shenandoahAffiliation.hpp"
34 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
35 #include "gc/shenandoah/shenandoahCardTable.hpp"
36 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
37 #include "gc/shenandoah/shenandoahEvacTracker.hpp"
38 #include "gc/shenandoah/shenandoahGenerationalHeap.hpp"
39 #include "gc/shenandoah/shenandoahPLAB.hpp"
40 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
41 #include "runtime/javaThread.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/sizes.hpp"
44
45 class ShenandoahThreadLocalData {
46 private:
47 char _gc_state;
48
49 SATBMarkQueue _satb_mark_queue;
50
51 // Current active CardTable's byte_map_base for this thread.
52 CardTable::CardValue* _card_table;
53
54 // Thread-local allocation buffer for object evacuations.
55 // In generational mode, it is exclusive to the young generation.
56 PLAB* _gclab;
57 size_t _gclab_size;
58
59 // Thread-local allocation buffer only used in generational mode.
60 // Used both by mutator threads and by GC worker threads
61 // for evacuations within the old generation and
62 // for promotions from the young generation into the old generation.
63 ShenandoahPLAB* _shenandoah_plab;
64
65 ShenandoahEvacuationStats* _evacuation_stats;
66
67 Atomic<HeapWord*> _invisible_root;
68 Atomic<size_t> _invisible_root_word_size;
75 return thread->gc_data<ShenandoahThreadLocalData>();
76 }
77
78 static ByteSize satb_mark_queue_offset() {
79 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _satb_mark_queue);
80 }
81
82 public:
83 static void create(Thread* thread) {
84 new (data(thread)) ShenandoahThreadLocalData();
85 }
86
87 static void destroy(Thread* thread) {
88 data(thread)->~ShenandoahThreadLocalData();
89 }
90
91 static SATBMarkQueue& satb_mark_queue(Thread* thread) {
92 return data(thread)->_satb_mark_queue;
93 }
94
95 static void set_gc_state(Thread* thread, char gc_state) {
96 data(thread)->_gc_state = gc_state;
97 }
98
99 static char gc_state(Thread* thread) {
100 return data(thread)->_gc_state;
101 }
102
103 static bool is_gc_state(Thread* thread, ShenandoahHeap::GCState state) {
104 return (gc_state(thread) & state) != 0;
105 }
106
107 static bool is_gc_state(ShenandoahHeap::GCState state) {
108 return is_gc_state(Thread::current(), state);
109 }
110
111 static void set_card_table(Thread* thread, CardTable::CardValue* ct) {
112 assert(ct != nullptr, "trying to set thread local card_table pointer to nullptr.");
113 data(thread)->_card_table = ct;
114 }
115
116 static CardTable::CardValue* card_table(Thread* thread) {
153 return data(thread)->_evacuation_stats;
154 }
155
156 static ShenandoahPLAB* shenandoah_plab(Thread* thread) {
157 return data(thread)->_shenandoah_plab;
158 }
159
160 // Offsets
161 static ByteSize satb_mark_queue_index_offset() {
162 return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_index();
163 }
164
165 static ByteSize satb_mark_queue_buffer_offset() {
166 return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_buf();
167 }
168
169 static ByteSize gc_state_offset() {
170 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _gc_state);
171 }
172
173 static ByteSize card_table_offset() {
174 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _card_table);
175 }
176
177 // invisible root are the partially initialized obj array set by ShenandoahObjArrayAllocator
178 static void set_invisible_root(Thread* thread, HeapWord* invisible_root, size_t word_size) {
179 data(thread)->_invisible_root.store_relaxed(invisible_root);
180 data(thread)->_invisible_root_word_size.store_relaxed(word_size);
181 }
182
183 static void clear_invisible_root(Thread* thread) {
184 data(thread)->_invisible_root.store_relaxed(nullptr);
185 data(thread)->_invisible_root_word_size.store_relaxed(0);
186 }
187
188 static HeapWord* get_invisible_root(Thread* thread) {
189 return data(thread)->_invisible_root.load_relaxed();
190 }
191
192 static size_t get_invisible_root_word_size(Thread* thread) {
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27 #define SHARE_GC_SHENANDOAH_SHENANDOAHTHREADLOCALDATA_HPP
28
29 #include "gc/shared/gc_globals.hpp"
30 #include "gc/shared/gcThreadLocalData.hpp"
31 #include "gc/shared/plab.hpp"
32 #include "gc/shenandoah/mode/shenandoahMode.hpp"
33 #include "gc/shenandoah/shenandoahAffiliation.hpp"
34 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
35 #include "gc/shenandoah/shenandoahCardTable.hpp"
36 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
37 #include "gc/shenandoah/shenandoahEvacTracker.hpp"
38 #include "gc/shenandoah/shenandoahGenerationalHeap.hpp"
39 #include "gc/shenandoah/shenandoahPLAB.hpp"
40 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
41 #include "runtime/javaThread.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/sizes.hpp"
44
45 class ShenandoahThreadLocalData {
46 private:
47 // Thread-local mirror for global GC state
48 char _gc_state;
49
50 // Quickened version of GC state.
51 // This allows all architectures to quickly check the group of states by using a single byte load.
52 enum FastGCState {
53 FORWARDED = ShenandoahHeap::HAS_FORWARDED,
54 MARKING = ShenandoahHeap::MARKING,
55 WEAK = ShenandoahHeap::WEAK_ROOTS,
56 FORWARDED_MARKING = ShenandoahHeap::HAS_FORWARDED | ShenandoahHeap::MARKING,
57 FORWARDED_WEAK = ShenandoahHeap::HAS_FORWARDED | ShenandoahHeap::WEAK_ROOTS,
58 MARKING_WEAK = ShenandoahHeap::MARKING | ShenandoahHeap::WEAK_ROOTS,
59 FORWARDED_MARKING_WEAK = ShenandoahHeap::HAS_FORWARDED | ShenandoahHeap::MARKING | ShenandoahHeap::WEAK_ROOTS
60 };
61
62 enum FastGCStatePos {
63 POS_FORWARDED = 0,
64 POS_MARKING = 1,
65 POS_WEAK = 2,
66 POS_FORWARDED_MARKING = 3,
67 POS_FORWARDED_WEAK = 4,
68 POS_MARKING_WEAK = 5,
69 POS_FORWARDED_MARKING_WEAK = 6,
70 POS_MAX
71 };
72
73 char _gc_state_fast_array[POS_MAX];
74
75 SATBMarkQueue _satb_mark_queue;
76
77 // Current active CardTable's byte_map_base for this thread.
78 CardTable::CardValue* _card_table;
79
80 // Thread-local allocation buffer for object evacuations.
81 // In generational mode, it is exclusive to the young generation.
82 PLAB* _gclab;
83 size_t _gclab_size;
84
85 // Thread-local allocation buffer only used in generational mode.
86 // Used both by mutator threads and by GC worker threads
87 // for evacuations within the old generation and
88 // for promotions from the young generation into the old generation.
89 ShenandoahPLAB* _shenandoah_plab;
90
91 ShenandoahEvacuationStats* _evacuation_stats;
92
93 Atomic<HeapWord*> _invisible_root;
94 Atomic<size_t> _invisible_root_word_size;
101 return thread->gc_data<ShenandoahThreadLocalData>();
102 }
103
104 static ByteSize satb_mark_queue_offset() {
105 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _satb_mark_queue);
106 }
107
108 public:
109 static void create(Thread* thread) {
110 new (data(thread)) ShenandoahThreadLocalData();
111 }
112
113 static void destroy(Thread* thread) {
114 data(thread)->~ShenandoahThreadLocalData();
115 }
116
117 static SATBMarkQueue& satb_mark_queue(Thread* thread) {
118 return data(thread)->_satb_mark_queue;
119 }
120
121 static char gc_state_to_fast_array_index(char gc_state) {
122 if (gc_state == FORWARDED) return POS_FORWARDED;
123 if (gc_state == MARKING) return POS_MARKING;
124 if (gc_state == WEAK) return POS_WEAK;
125 if (gc_state == FORWARDED_MARKING) return POS_FORWARDED_MARKING;
126 if (gc_state == FORWARDED_WEAK) return POS_FORWARDED_WEAK;
127 if (gc_state == MARKING_WEAK) return POS_MARKING_WEAK;
128 if (gc_state == FORWARDED_MARKING_WEAK) return POS_FORWARDED_MARKING_WEAK;
129 ShouldNotReachHere();
130 return 0;
131 }
132
133 static void set_gc_state(Thread* thread, char gc_state) {
134 ShenandoahThreadLocalData* d = data(thread);
135 d->_gc_state = gc_state;
136 d->_gc_state_fast_array[POS_FORWARDED] = (gc_state & FORWARDED) > 0;
137 d->_gc_state_fast_array[POS_MARKING] = (gc_state & MARKING) > 0;
138 d->_gc_state_fast_array[POS_WEAK] = (gc_state & WEAK) > 0;
139 d->_gc_state_fast_array[POS_FORWARDED_MARKING] = (gc_state & FORWARDED_MARKING) > 0;
140 d->_gc_state_fast_array[POS_FORWARDED_WEAK] = (gc_state & FORWARDED_WEAK) > 0;
141 d->_gc_state_fast_array[POS_MARKING_WEAK] = (gc_state & MARKING_WEAK) > 0;
142 d->_gc_state_fast_array[POS_FORWARDED_MARKING_WEAK] = (gc_state & FORWARDED_MARKING_WEAK) > 0;
143 }
144
145 static char gc_state(Thread* thread) {
146 return data(thread)->_gc_state;
147 }
148
149 static bool is_gc_state(Thread* thread, ShenandoahHeap::GCState state) {
150 return (gc_state(thread) & state) != 0;
151 }
152
153 static bool is_gc_state(ShenandoahHeap::GCState state) {
154 return is_gc_state(Thread::current(), state);
155 }
156
157 static void set_card_table(Thread* thread, CardTable::CardValue* ct) {
158 assert(ct != nullptr, "trying to set thread local card_table pointer to nullptr.");
159 data(thread)->_card_table = ct;
160 }
161
162 static CardTable::CardValue* card_table(Thread* thread) {
199 return data(thread)->_evacuation_stats;
200 }
201
202 static ShenandoahPLAB* shenandoah_plab(Thread* thread) {
203 return data(thread)->_shenandoah_plab;
204 }
205
206 // Offsets
207 static ByteSize satb_mark_queue_index_offset() {
208 return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_index();
209 }
210
211 static ByteSize satb_mark_queue_buffer_offset() {
212 return satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_buf();
213 }
214
215 static ByteSize gc_state_offset() {
216 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _gc_state);
217 }
218
219 static ByteSize gc_state_fast_array_offset(char gc_state) {
220 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _gc_state_fast_array) + in_ByteSize(gc_state_to_fast_array_index(gc_state));
221 }
222
223 static ByteSize card_table_offset() {
224 return Thread::gc_data_offset() + byte_offset_of(ShenandoahThreadLocalData, _card_table);
225 }
226
227 // invisible root are the partially initialized obj array set by ShenandoahObjArrayAllocator
228 static void set_invisible_root(Thread* thread, HeapWord* invisible_root, size_t word_size) {
229 data(thread)->_invisible_root.store_relaxed(invisible_root);
230 data(thread)->_invisible_root_word_size.store_relaxed(word_size);
231 }
232
233 static void clear_invisible_root(Thread* thread) {
234 data(thread)->_invisible_root.store_relaxed(nullptr);
235 data(thread)->_invisible_root_word_size.store_relaxed(0);
236 }
237
238 static HeapWord* get_invisible_root(Thread* thread) {
239 return data(thread)->_invisible_root.load_relaxed();
240 }
241
242 static size_t get_invisible_root_word_size(Thread* thread) {
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