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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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| 40 | 40 |
| 41 | 41 |
| 42 TEST(ObjectHashTable) { | 42 TEST(ObjectHashTable) { |
| 43 LocalContext context; | 43 LocalContext context; |
| 44 Isolate* isolate = CcTest::i_isolate(); | 44 Isolate* isolate = CcTest::i_isolate(); |
| 45 Factory* factory = isolate->factory(); | 45 Factory* factory = isolate->factory(); |
| 46 v8::HandleScope scope(context->GetIsolate()); | 46 v8::HandleScope scope(context->GetIsolate()); |
| 47 Handle<ObjectHashTable> table = factory->NewObjectHashTable(23); | 47 Handle<ObjectHashTable> table = factory->NewObjectHashTable(23); |
| 48 Handle<JSObject> a = factory->NewJSArray(7); | 48 Handle<JSObject> a = factory->NewJSArray(7); |
| 49 Handle<JSObject> b = factory->NewJSArray(11); | 49 Handle<JSObject> b = factory->NewJSArray(11); |
| 50 table = PutIntoObjectHashTable(table, a, b); | 50 table = ObjectHashTable::Put(table, a, b); |
| 51 CHECK_EQ(table->NumberOfElements(), 1); | 51 CHECK_EQ(table->NumberOfElements(), 1); |
| 52 CHECK_EQ(table->Lookup(*a), *b); | 52 CHECK_EQ(table->Lookup(*a), *b); |
| 53 CHECK_EQ(table->Lookup(*b), CcTest::heap()->the_hole_value()); | 53 CHECK_EQ(table->Lookup(*b), CcTest::heap()->the_hole_value()); |
| 54 | 54 |
| 55 // Keys still have to be valid after objects were moved. | 55 // Keys still have to be valid after objects were moved. |
| 56 CcTest::heap()->CollectGarbage(NEW_SPACE); | 56 CcTest::heap()->CollectGarbage(NEW_SPACE); |
| 57 CHECK_EQ(table->NumberOfElements(), 1); | 57 CHECK_EQ(table->NumberOfElements(), 1); |
| 58 CHECK_EQ(table->Lookup(*a), *b); | 58 CHECK_EQ(table->Lookup(*a), *b); |
| 59 CHECK_EQ(table->Lookup(*b), CcTest::heap()->the_hole_value()); | 59 CHECK_EQ(table->Lookup(*b), CcTest::heap()->the_hole_value()); |
| 60 | 60 |
| 61 // Keys that are overwritten should not change number of elements. | 61 // Keys that are overwritten should not change number of elements. |
| 62 table = PutIntoObjectHashTable(table, a, factory->NewJSArray(13)); | 62 table = ObjectHashTable::Put(table, a, factory->NewJSArray(13)); |
| 63 CHECK_EQ(table->NumberOfElements(), 1); | 63 CHECK_EQ(table->NumberOfElements(), 1); |
| 64 CHECK_NE(table->Lookup(*a), *b); | 64 CHECK_NE(table->Lookup(*a), *b); |
| 65 | 65 |
| 66 // Keys mapped to the hole should be removed permanently. | 66 // Keys mapped to the hole should be removed permanently. |
| 67 table = PutIntoObjectHashTable(table, a, factory->the_hole_value()); | 67 table = ObjectHashTable::Put(table, a, factory->the_hole_value()); |
| 68 CHECK_EQ(table->NumberOfElements(), 0); | 68 CHECK_EQ(table->NumberOfElements(), 0); |
| 69 CHECK_EQ(table->NumberOfDeletedElements(), 1); | 69 CHECK_EQ(table->NumberOfDeletedElements(), 1); |
| 70 CHECK_EQ(table->Lookup(*a), CcTest::heap()->the_hole_value()); | 70 CHECK_EQ(table->Lookup(*a), CcTest::heap()->the_hole_value()); |
| 71 | 71 |
| 72 // Keys should map back to their respective values and also should get | 72 // Keys should map back to their respective values and also should get |
| 73 // an identity hash code generated. | 73 // an identity hash code generated. |
| 74 for (int i = 0; i < 100; i++) { | 74 for (int i = 0; i < 100; i++) { |
| 75 Handle<JSReceiver> key = factory->NewJSArray(7); | 75 Handle<JSReceiver> key = factory->NewJSArray(7); |
| 76 Handle<JSObject> value = factory->NewJSArray(11); | 76 Handle<JSObject> value = factory->NewJSArray(11); |
| 77 table = PutIntoObjectHashTable(table, key, value); | 77 table = ObjectHashTable::Put(table, key, value); |
| 78 CHECK_EQ(table->NumberOfElements(), i + 1); | 78 CHECK_EQ(table->NumberOfElements(), i + 1); |
| 79 CHECK_NE(table->FindEntry(*key), ObjectHashTable::kNotFound); | 79 CHECK_NE(table->FindEntry(*key), ObjectHashTable::kNotFound); |
| 80 CHECK_EQ(table->Lookup(*key), *value); | 80 CHECK_EQ(table->Lookup(*key), *value); |
| 81 CHECK(key->GetIdentityHash(OMIT_CREATION)->ToObjectChecked()->IsSmi()); | 81 CHECK(key->GetIdentityHash()->IsSmi()); |
| 82 } | 82 } |
| 83 | 83 |
| 84 // Keys never added to the map which already have an identity hash | 84 // Keys never added to the map which already have an identity hash |
| 85 // code should not be found. | 85 // code should not be found. |
| 86 for (int i = 0; i < 100; i++) { | 86 for (int i = 0; i < 100; i++) { |
| 87 Handle<JSReceiver> key = factory->NewJSArray(7); | 87 Handle<JSReceiver> key = factory->NewJSArray(7); |
| 88 CHECK(key->GetIdentityHash(ALLOW_CREATION)->ToObjectChecked()->IsSmi()); | 88 CHECK(JSReceiver::GetOrCreateIdentityHash(key)->IsSmi()); |
| 89 CHECK_EQ(table->FindEntry(*key), ObjectHashTable::kNotFound); | 89 CHECK_EQ(table->FindEntry(*key), ObjectHashTable::kNotFound); |
| 90 CHECK_EQ(table->Lookup(*key), CcTest::heap()->the_hole_value()); | 90 CHECK_EQ(table->Lookup(*key), CcTest::heap()->the_hole_value()); |
| 91 CHECK(key->GetIdentityHash(OMIT_CREATION)->ToObjectChecked()->IsSmi()); | 91 CHECK(key->GetIdentityHash()->IsSmi()); |
| 92 } | 92 } |
| 93 | 93 |
| 94 // Keys that don't have an identity hash should not be found and also | 94 // Keys that don't have an identity hash should not be found and also |
| 95 // should not get an identity hash code generated. | 95 // should not get an identity hash code generated. |
| 96 for (int i = 0; i < 100; i++) { | 96 for (int i = 0; i < 100; i++) { |
| 97 Handle<JSReceiver> key = factory->NewJSArray(7); | 97 Handle<JSReceiver> key = factory->NewJSArray(7); |
| 98 CHECK_EQ(table->Lookup(*key), CcTest::heap()->the_hole_value()); | 98 CHECK_EQ(table->Lookup(*key), CcTest::heap()->the_hole_value()); |
| 99 CHECK_EQ(key->GetIdentityHash(OMIT_CREATION), | 99 CHECK_EQ(key->GetIdentityHash(), |
| 100 CcTest::heap()->undefined_value()); | 100 CcTest::heap()->undefined_value()); |
| 101 } | 101 } |
| 102 } | 102 } |
| 103 | 103 |
| 104 | 104 |
| 105 class ObjectHashTableTest: public ObjectHashTable { | 105 class ObjectHashTableTest: public ObjectHashTable { |
| 106 public: | 106 public: |
| 107 void insert(int entry, int key, int value) { | 107 void insert(int entry, int key, int value) { |
| 108 set(EntryToIndex(entry), Smi::FromInt(key)); | 108 set(EntryToIndex(entry), Smi::FromInt(key)); |
| 109 set(EntryToIndex(entry) + 1, Smi::FromInt(value)); | 109 set(EntryToIndex(entry) + 1, Smi::FromInt(value)); |
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| 168 key_obj->SetHiddenValue(v8_str("key 1"), v8_str("val 1")); | 168 key_obj->SetHiddenValue(v8_str("key 1"), v8_str("val 1")); |
| 169 key_obj->SetHiddenValue(v8_str("key 2"), v8_str("val 2")); | 169 key_obj->SetHiddenValue(v8_str("key 2"), v8_str("val 2")); |
| 170 key_obj->SetHiddenValue(v8_str("key 3"), v8_str("val 3")); | 170 key_obj->SetHiddenValue(v8_str("key 3"), v8_str("val 3")); |
| 171 | 171 |
| 172 // Simulate a full heap so that generating an identity hash code | 172 // Simulate a full heap so that generating an identity hash code |
| 173 // in subsequent calls will request GC. | 173 // in subsequent calls will request GC. |
| 174 SimulateFullSpace(CcTest::heap()->new_space()); | 174 SimulateFullSpace(CcTest::heap()->new_space()); |
| 175 SimulateFullSpace(CcTest::heap()->old_pointer_space()); | 175 SimulateFullSpace(CcTest::heap()->old_pointer_space()); |
| 176 | 176 |
| 177 // Calling Contains() should not cause GC ever. | 177 // Calling Contains() should not cause GC ever. |
| 178 int gc_count = isolate->heap()->gc_count(); |
| 178 CHECK(!table->Contains(*key)); | 179 CHECK(!table->Contains(*key)); |
| 180 CHECK(gc_count == isolate->heap()->gc_count()); |
| 179 | 181 |
| 180 // Calling Remove() should not cause GC ever. | 182 // Calling Remove() will not cause GC in this case. |
| 181 CHECK(!table->Remove(*key)->IsFailure()); | 183 table = ObjectHashSet::Remove(table, key); |
| 184 CHECK(gc_count == isolate->heap()->gc_count()); |
| 182 | 185 |
| 183 // Calling Add() should request GC by returning a failure. | 186 // Calling Add() should cause GC. |
| 184 CHECK(table->Add(*key)->IsRetryAfterGC()); | 187 table = ObjectHashSet::Add(table, key); |
| 188 CHECK(gc_count < isolate->heap()->gc_count()); |
| 185 } | 189 } |
| 186 #endif | 190 #endif |
| 187 | 191 |
| 188 | 192 |
| 189 #ifdef DEBUG | 193 #ifdef DEBUG |
| 190 TEST(ObjectHashTableCausesGC) { | 194 TEST(ObjectHashTableCausesGC) { |
| 191 i::FLAG_stress_compaction = false; | 195 i::FLAG_stress_compaction = false; |
| 192 LocalContext context; | 196 LocalContext context; |
| 193 Isolate* isolate = CcTest::i_isolate(); | 197 Isolate* isolate = CcTest::i_isolate(); |
| 194 Factory* factory = isolate->factory(); | 198 Factory* factory = isolate->factory(); |
| 195 v8::HandleScope scope(context->GetIsolate()); | 199 v8::HandleScope scope(context->GetIsolate()); |
| 196 Handle<ObjectHashTable> table = factory->NewObjectHashTable(1); | 200 Handle<ObjectHashTable> table = factory->NewObjectHashTable(1); |
| 197 Handle<JSObject> key = factory->NewJSArray(0); | 201 Handle<JSObject> key = factory->NewJSArray(0); |
| 198 v8::Handle<v8::Object> key_obj = v8::Utils::ToLocal(key); | 202 v8::Handle<v8::Object> key_obj = v8::Utils::ToLocal(key); |
| 199 | 203 |
| 200 // Force allocation of hash table backing store for hidden properties. | 204 // Force allocation of hash table backing store for hidden properties. |
| 201 key_obj->SetHiddenValue(v8_str("key 1"), v8_str("val 1")); | 205 key_obj->SetHiddenValue(v8_str("key 1"), v8_str("val 1")); |
| 202 key_obj->SetHiddenValue(v8_str("key 2"), v8_str("val 2")); | 206 key_obj->SetHiddenValue(v8_str("key 2"), v8_str("val 2")); |
| 203 key_obj->SetHiddenValue(v8_str("key 3"), v8_str("val 3")); | 207 key_obj->SetHiddenValue(v8_str("key 3"), v8_str("val 3")); |
| 204 | 208 |
| 205 // Simulate a full heap so that generating an identity hash code | 209 // Simulate a full heap so that generating an identity hash code |
| 206 // in subsequent calls will request GC. | 210 // in subsequent calls will request GC. |
| 207 SimulateFullSpace(CcTest::heap()->new_space()); | 211 SimulateFullSpace(CcTest::heap()->new_space()); |
| 208 SimulateFullSpace(CcTest::heap()->old_pointer_space()); | 212 SimulateFullSpace(CcTest::heap()->old_pointer_space()); |
| 209 | 213 |
| 210 // Calling Lookup() should not cause GC ever. | 214 // Calling Lookup() should not cause GC ever. |
| 211 CHECK(table->Lookup(*key)->IsTheHole()); | 215 CHECK(table->Lookup(*key)->IsTheHole()); |
| 212 | 216 |
| 213 // Calling Put() should request GC by returning a failure. | 217 // Calling Put() should request GC by returning a failure. |
| 214 CHECK(table->Put(*key, *key)->IsRetryAfterGC()); | 218 int gc_count = isolate->heap()->gc_count(); |
| 219 ObjectHashTable::Put(table, key, key); |
| 220 CHECK(gc_count < isolate->heap()->gc_count()); |
| 215 } | 221 } |
| 216 #endif | 222 #endif |
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