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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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