| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/v8.h" |
| |
| #include "src/list.h" |
| #include "src/objects.h" |
| #include "test/cctest/cctest.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| namespace { |
| |
| static Handle<Code> GetDummyCode(Isolate* isolate) { |
| CodeDesc desc = {nullptr, // buffer |
| 0, // buffer_size |
| 0, // instr_size |
| 0, // reloc_size |
| 0, // constant_pool_size |
| nullptr, // unwinding_info |
| 0, // unwinding_info_size |
| nullptr}; // origin |
| Code::Flags flags = |
| Code::ComputeFlags(Code::LOAD_IC, kNoExtraICState, kCacheOnReceiver); |
| Handle<Code> self_ref; |
| return isolate->factory()->NewCode(desc, flags, self_ref); |
| } |
| |
| } // namespace |
| |
| TEST(CodeCache) { |
| CcTest::InitializeVM(); |
| Isolate* isolate = CcTest::i_isolate(); |
| Factory* factory = isolate->factory(); |
| HandleScope handle_scope(isolate); |
| |
| Handle<Map> map = |
| factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize, FAST_ELEMENTS); |
| |
| // This number should be large enough to cause the code cache to use its |
| // hash table storage format. |
| static const int kEntries = 150; |
| |
| // Prepare name/code pairs. |
| List<Handle<Name>> names(kEntries); |
| List<Handle<Code>> codes(kEntries); |
| for (int i = 0; i < kEntries; i++) { |
| names.Add(isolate->factory()->NewSymbol()); |
| codes.Add(GetDummyCode(isolate)); |
| } |
| Handle<Name> bad_name = isolate->factory()->NewSymbol(); |
| Code::Flags bad_flags = |
| Code::ComputeFlags(Code::LOAD_IC, kNoExtraICState, kCacheOnPrototype); |
| DCHECK(bad_flags != codes[0]->flags()); |
| |
| // Cache name/code pairs. |
| for (int i = 0; i < kEntries; i++) { |
| Handle<Name> name = names.at(i); |
| Handle<Code> code = codes.at(i); |
| Map::UpdateCodeCache(map, name, code); |
| CHECK_EQ(*code, map->LookupInCodeCache(*name, code->flags())); |
| CHECK_NULL(map->LookupInCodeCache(*name, bad_flags)); |
| } |
| CHECK_NULL(map->LookupInCodeCache(*bad_name, bad_flags)); |
| |
| // Check that lookup works not only right after storing. |
| for (int i = 0; i < kEntries; i++) { |
| Handle<Name> name = names.at(i); |
| Handle<Code> code = codes.at(i); |
| CHECK_EQ(*code, map->LookupInCodeCache(*name, code->flags())); |
| } |
| } |
| |
| } // namespace internal |
| } // namespace v8 |