1 /* 2 * Copyright (c) 2024 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_WORK_SPACE_CHUNK_H 17 #define ECMASCRIPT_WORK_SPACE_CHUNK_H 18 19 #include "ecmascript/common.h" 20 #include "ecmascript/log_wrapper.h" 21 #include "ecmascript/mem/ecma_list.h" 22 #include "ecmascript/mem/area.h" 23 #include "ecmascript/mem/chunk.h" 24 #include "ecmascript/mem/c_containers.h" 25 #include "ecmascript/platform/mutex.h" 26 27 namespace panda::ecmascript { 28 class NativeAreaAllocator; 29 30 class PUBLIC_API WorkSpaceChunk { 31 public: 32 static constexpr size_t MEM_ALIGN = 8U; 33 34 explicit WorkSpaceChunk(NativeAreaAllocator *allocator); 35 WorkSpaceChunk() = default; ~WorkSpaceChunk()36 ~WorkSpaceChunk() 37 { 38 ReleaseMemory(); 39 } 40 41 NO_COPY_SEMANTIC(WorkSpaceChunk); 42 NO_MOVE_SEMANTIC(WorkSpaceChunk); 43 Allocate(size_t size)44 void *Allocate(size_t size) 45 { 46 LockHolder lock(mtx_); 47 if (size != WORKNODE_SPACE_SIZE) { 48 LOG_ECMA_MEM(FATAL) << "WorkNode size is illegal, size:" << size; 49 UNREACHABLE(); 50 } 51 uintptr_t result = 0; 52 if (!cachedAreaList_.empty()) { 53 result = cachedAreaList_.back(); 54 cachedAreaList_.pop_back(); 55 return reinterpret_cast<void *>(result); 56 } 57 size = AlignUp(size, MEM_ALIGN); 58 result = NewArea(size); 59 60 return reinterpret_cast<void *>(result); 61 } 62 63 void Free([[maybe_unused]] void *mem); 64 65 private: 66 uintptr_t NewArea(size_t size); 67 void ReleaseMemory(); 68 static constexpr size_t MAX_WORK_SPACE_CHUNK_SIZE = 2_MB; 69 NativeAreaAllocator *allocator_ {nullptr}; 70 Mutex mtx_; 71 CUnorderedMap<uintptr_t, uintptr_t> areaList_ {}; 72 CList<uintptr_t> cachedAreaList_ {}; 73 }; 74 } // namespace panda::ecmascript 75 #endif // ECMASCRIPT_WORK_SPACE_CHUNK_H 76