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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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45 Handle<JSWeakMap> weakmap = isolate->factory()->NewJSWeakMap(); | 45 Handle<JSWeakMap> weakmap = isolate->factory()->NewJSWeakMap(); |
46 // Do not leak handles for the hash table, it would make entries strong. | 46 // Do not leak handles for the hash table, it would make entries strong. |
47 { | 47 { |
48 HandleScope scope(isolate); | 48 HandleScope scope(isolate); |
49 Handle<ObjectHashTable> table = ObjectHashTable::New(isolate, 1); | 49 Handle<ObjectHashTable> table = ObjectHashTable::New(isolate, 1); |
50 weakmap->set_table(*table); | 50 weakmap->set_table(*table); |
51 } | 51 } |
52 return weakmap; | 52 return weakmap; |
53 } | 53 } |
54 | 54 |
55 static void PutIntoWeakMap(Handle<JSWeakMap> weakmap, | |
56 Handle<JSObject> key, | |
57 Handle<Object> value) { | |
58 Runtime::WeakCollectionSet(weakmap, key, value); | |
59 } | |
60 | |
61 static int NumberOfWeakCalls = 0; | 55 static int NumberOfWeakCalls = 0; |
62 static void WeakPointerCallback( | 56 static void WeakPointerCallback( |
63 const v8::WeakCallbackData<v8::Value, void>& data) { | 57 const v8::WeakCallbackData<v8::Value, void>& data) { |
64 std::pair<v8::Persistent<v8::Value>*, int>* p = | 58 std::pair<v8::Persistent<v8::Value>*, int>* p = |
65 reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>( | 59 reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>( |
66 data.GetParameter()); | 60 data.GetParameter()); |
67 DCHECK_EQ(1234, p->second); | 61 DCHECK_EQ(1234, p->second); |
68 NumberOfWeakCalls++; | 62 NumberOfWeakCalls++; |
69 p->first->Reset(); | 63 p->first->Reset(); |
70 } | 64 } |
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88 Handle<JSObject> object = factory->NewJSObjectFromMap(map); | 82 Handle<JSObject> object = factory->NewJSObjectFromMap(map); |
89 key = global_handles->Create(*object); | 83 key = global_handles->Create(*object); |
90 } | 84 } |
91 CHECK(!global_handles->IsWeak(key.location())); | 85 CHECK(!global_handles->IsWeak(key.location())); |
92 | 86 |
93 // Put two chained entries into weak map. | 87 // Put two chained entries into weak map. |
94 { | 88 { |
95 HandleScope scope(isolate); | 89 HandleScope scope(isolate); |
96 Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); | 90 Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); |
97 Handle<JSObject> object = factory->NewJSObjectFromMap(map); | 91 Handle<JSObject> object = factory->NewJSObjectFromMap(map); |
98 PutIntoWeakMap(weakmap, Handle<JSObject>(JSObject::cast(*key)), object); | 92 Handle<Smi> smi(Smi::FromInt(23), isolate); |
99 PutIntoWeakMap(weakmap, object, Handle<Smi>(Smi::FromInt(23), isolate)); | 93 Runtime::WeakCollectionSet(weakmap, key, object); |
| 94 Runtime::WeakCollectionSet(weakmap, object, smi); |
100 } | 95 } |
101 CHECK_EQ(2, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); | 96 CHECK_EQ(2, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); |
102 | 97 |
103 // Force a full GC. | 98 // Force a full GC. |
104 heap->CollectAllGarbage(false); | 99 heap->CollectAllGarbage(false); |
105 CHECK_EQ(0, NumberOfWeakCalls); | 100 CHECK_EQ(0, NumberOfWeakCalls); |
106 CHECK_EQ(2, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); | 101 CHECK_EQ(2, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); |
107 CHECK_EQ( | 102 CHECK_EQ( |
108 0, ObjectHashTable::cast(weakmap->table())->NumberOfDeletedElements()); | 103 0, ObjectHashTable::cast(weakmap->table())->NumberOfDeletedElements()); |
109 | 104 |
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143 | 138 |
144 // Check initial capacity. | 139 // Check initial capacity. |
145 CHECK_EQ(32, ObjectHashTable::cast(weakmap->table())->Capacity()); | 140 CHECK_EQ(32, ObjectHashTable::cast(weakmap->table())->Capacity()); |
146 | 141 |
147 // Fill up weak map to trigger capacity change. | 142 // Fill up weak map to trigger capacity change. |
148 { | 143 { |
149 HandleScope scope(isolate); | 144 HandleScope scope(isolate); |
150 Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); | 145 Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); |
151 for (int i = 0; i < 32; i++) { | 146 for (int i = 0; i < 32; i++) { |
152 Handle<JSObject> object = factory->NewJSObjectFromMap(map); | 147 Handle<JSObject> object = factory->NewJSObjectFromMap(map); |
153 PutIntoWeakMap(weakmap, object, Handle<Smi>(Smi::FromInt(i), isolate)); | 148 Handle<Smi> smi(Smi::FromInt(i), isolate); |
| 149 Runtime::WeakCollectionSet(weakmap, object, smi); |
154 } | 150 } |
155 } | 151 } |
156 | 152 |
157 // Check increased capacity. | 153 // Check increased capacity. |
158 CHECK_EQ(128, ObjectHashTable::cast(weakmap->table())->Capacity()); | 154 CHECK_EQ(128, ObjectHashTable::cast(weakmap->table())->Capacity()); |
159 | 155 |
160 // Force a full GC. | 156 // Force a full GC. |
161 CHECK_EQ(32, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); | 157 CHECK_EQ(32, ObjectHashTable::cast(weakmap->table())->NumberOfElements()); |
162 CHECK_EQ( | 158 CHECK_EQ( |
163 0, ObjectHashTable::cast(weakmap->table())->NumberOfDeletedElements()); | 159 0, ObjectHashTable::cast(weakmap->table())->NumberOfDeletedElements()); |
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190 Page* first_page = heap->old_pointer_space()->anchor()->next_page(); | 186 Page* first_page = heap->old_pointer_space()->anchor()->next_page(); |
191 factory->NewFixedArray(900 * KB / kPointerSize, TENURED); | 187 factory->NewFixedArray(900 * KB / kPointerSize, TENURED); |
192 | 188 |
193 // Fill up weak map with values on an evacuation candidate. | 189 // Fill up weak map with values on an evacuation candidate. |
194 { | 190 { |
195 HandleScope scope(isolate); | 191 HandleScope scope(isolate); |
196 for (int i = 0; i < 32; i++) { | 192 for (int i = 0; i < 32; i++) { |
197 Handle<JSObject> object = factory->NewJSObject(function, TENURED); | 193 Handle<JSObject> object = factory->NewJSObject(function, TENURED); |
198 CHECK(!heap->InNewSpace(object->address())); | 194 CHECK(!heap->InNewSpace(object->address())); |
199 CHECK(!first_page->Contains(object->address())); | 195 CHECK(!first_page->Contains(object->address())); |
200 PutIntoWeakMap(weakmap, key, object); | 196 Runtime::WeakCollectionSet(weakmap, key, object); |
201 } | 197 } |
202 } | 198 } |
203 | 199 |
204 // Force compacting garbage collection. | 200 // Force compacting garbage collection. |
205 CHECK(FLAG_always_compact); | 201 CHECK(FLAG_always_compact); |
206 heap->CollectAllGarbage(Heap::kNoGCFlags); | 202 heap->CollectAllGarbage(Heap::kNoGCFlags); |
207 } | 203 } |
208 | 204 |
209 | 205 |
210 // Test that weak map keys on an evacuation candidate which are reachable by | 206 // Test that weak map keys on an evacuation candidate which are reachable by |
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230 | 226 |
231 // Fill up weak map with keys on an evacuation candidate. | 227 // Fill up weak map with keys on an evacuation candidate. |
232 Handle<JSObject> keys[32]; | 228 Handle<JSObject> keys[32]; |
233 for (int i = 0; i < 32; i++) { | 229 for (int i = 0; i < 32; i++) { |
234 keys[i] = factory->NewJSObject(function, TENURED); | 230 keys[i] = factory->NewJSObject(function, TENURED); |
235 CHECK(!heap->InNewSpace(keys[i]->address())); | 231 CHECK(!heap->InNewSpace(keys[i]->address())); |
236 CHECK(!first_page->Contains(keys[i]->address())); | 232 CHECK(!first_page->Contains(keys[i]->address())); |
237 } | 233 } |
238 Handle<JSWeakMap> weakmap = AllocateJSWeakMap(isolate); | 234 Handle<JSWeakMap> weakmap = AllocateJSWeakMap(isolate); |
239 for (int i = 0; i < 32; i++) { | 235 for (int i = 0; i < 32; i++) { |
240 PutIntoWeakMap(weakmap, | 236 Handle<Smi> smi(Smi::FromInt(i), isolate); |
241 keys[i], | 237 Runtime::WeakCollectionSet(weakmap, keys[i], smi); |
242 Handle<Smi>(Smi::FromInt(i), isolate)); | |
243 } | 238 } |
244 | 239 |
245 // Force compacting garbage collection. The subsequent collections are used | 240 // Force compacting garbage collection. The subsequent collections are used |
246 // to verify that key references were actually updated. | 241 // to verify that key references were actually updated. |
247 CHECK(FLAG_always_compact); | 242 CHECK(FLAG_always_compact); |
248 heap->CollectAllGarbage(Heap::kNoGCFlags); | 243 heap->CollectAllGarbage(Heap::kNoGCFlags); |
249 heap->CollectAllGarbage(Heap::kNoGCFlags); | 244 heap->CollectAllGarbage(Heap::kNoGCFlags); |
250 heap->CollectAllGarbage(Heap::kNoGCFlags); | 245 heap->CollectAllGarbage(Heap::kNoGCFlags); |
251 } | 246 } |
252 | 247 |
253 | 248 |
254 TEST(Regress399527) { | 249 TEST(Regress399527) { |
255 CcTest::InitializeVM(); | 250 CcTest::InitializeVM(); |
256 v8::HandleScope scope(CcTest::isolate()); | 251 v8::HandleScope scope(CcTest::isolate()); |
257 Isolate* isolate = CcTest::i_isolate(); | 252 Isolate* isolate = CcTest::i_isolate(); |
258 Heap* heap = isolate->heap(); | 253 Heap* heap = isolate->heap(); |
259 { | 254 { |
260 HandleScope scope(isolate); | 255 HandleScope scope(isolate); |
261 AllocateJSWeakMap(isolate); | 256 AllocateJSWeakMap(isolate); |
262 SimulateIncrementalMarking(heap); | 257 SimulateIncrementalMarking(heap); |
263 } | 258 } |
264 // The weak map is marked black here but leaving the handle scope will make | 259 // The weak map is marked black here but leaving the handle scope will make |
265 // the object unreachable. Aborting incremental marking will clear all the | 260 // the object unreachable. Aborting incremental marking will clear all the |
266 // marking bits which makes the weak map garbage. | 261 // marking bits which makes the weak map garbage. |
267 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); | 262 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); |
268 } | 263 } |
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