1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_MEM_TLAB_ALLOCATOR_H 17 #define ECMASCRIPT_MEM_TLAB_ALLOCATOR_H 18 19 #include "ecmascript/mem/allocator-inl.h" 20 21 namespace panda::ecmascript { 22 class Heap; 23 24 class TlabAllocator { 25 public: 26 TlabAllocator() = delete; 27 inline explicit TlabAllocator(Heap *heap); ~TlabAllocator()28 ~TlabAllocator() 29 { 30 delete localSpace_; 31 } 32 33 NO_COPY_SEMANTIC(TlabAllocator); 34 NO_MOVE_SEMANTIC(TlabAllocator); 35 36 inline void Finalize(); 37 38 inline uintptr_t Allocate(size_t size, MemSpaceType space); 39 40 private: 41 inline uintptr_t AllocateInYoungSpace(size_t size); 42 inline uintptr_t AllocateInOldSpace(size_t size); 43 inline uintptr_t AllocateInCompressSpace(size_t size); 44 45 inline bool ExpandYoung(); 46 inline bool ExpandCompressFromOld(size_t size); 47 48 Heap *heap_; 49 50 bool enableExpandYoung_; 51 BumpPointerAllocator youngAllocator_; 52 53 LocalSpace *localSpace_; 54 }; 55 } // namespace panda::ecmascript 56 57 #endif // ECMASCRIPT_MEM_TLAB_ALLOCATOR_H 58