1 /* 2 * Copyright (c) 2022 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_SHARED_MEMORY_MANAGER_MANAGER_H 17 #define ECMASCRIPT_SHARED_MEMORY_MANAGER_MANAGER_H 18 19 #include "ecmascript/mem/c_containers.h" 20 #include "libpandabase/os/mutex.h" 21 22 namespace panda { 23 class EcmaVm; 24 namespace ecmascript { 25 class JSSharedMemoryManager { 26 public: 27 PUBLIC_API ~JSSharedMemoryManager(); 28 GetInstance()29 static JSSharedMemoryManager *GetInstance() 30 { 31 static JSSharedMemoryManager jsSharedMemoryManager; 32 return &jsSharedMemoryManager; 33 } 34 bool CreateOrLoad(void **pointer, size_t size); 35 static void RemoveSharedMemory(void *pointer, void *data); 36 private: 37 JSSharedMemoryManager() = default; 38 39 void InsertSharedMemory(const void *pointer); 40 void IncreaseRefSharedMemory(const void *pointer); 41 void DecreaseRefSharedMemory(const void *pointer); 42 void FreeBuffer(void *mem); 43 void *AllocateBuffer(size_t size); 44 os::memory::RecursiveMutex jsSharedMemoryLock_; 45 CMap<const uint64_t, int32_t> loadedJSSharedMemory_; 46 }; 47 } // namespace ecmascript 48 } // namespace panda 49 #endif // ECMASCRIPT_SHARED_MEMORY_MANAGER_MANAGER_H 50