1 /** 2 * Copyright (c) 2023-2024 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 PANDA_PLUGINS_ETS_RUNTIME_INTEROP_JS_ETS_PROXY_WRAPPERS_CACHE_H_ 17 #define PANDA_PLUGINS_ETS_RUNTIME_INTEROP_JS_ETS_PROXY_WRAPPERS_CACHE_H_ 18 19 #include "libpandabase/macros.h" 20 21 #include <memory> 22 #include <unordered_map> 23 24 namespace ark::ets::interop::js::ets_proxy { 25 26 template <typename Key, typename Wrapper> 27 class WrappersCache { 28 public: 29 WrappersCache() = default; 30 ~WrappersCache() = default; 31 NO_COPY_SEMANTIC(WrappersCache); 32 NO_MOVE_SEMANTIC(WrappersCache); 33 Lookup(Key key)34 Wrapper *Lookup(Key key) 35 { 36 auto it = cache_.find(key); 37 if (UNLIKELY(it == cache_.end())) { 38 return nullptr; 39 } 40 return it->second.get(); 41 } 42 Insert(Key key,std::unique_ptr<Wrapper> && wrapper)43 Wrapper *Insert(Key key, std::unique_ptr<Wrapper> &&wrapper) 44 { 45 auto [it, inserted] = cache_.insert_or_assign(key, std::move(wrapper)); 46 ASSERT(inserted); 47 return it->second.get(); 48 } 49 Steal(Key key)50 std::unique_ptr<Wrapper> Steal(Key key) 51 { 52 auto nh = cache_.extract(key); 53 return nh ? std::move(nh.mapped()) : nullptr; 54 } 55 56 private: 57 std::unordered_map<Key, std::unique_ptr<Wrapper>> cache_; 58 }; 59 60 } // namespace ark::ets::interop::js::ets_proxy 61 62 #endif // !PANDA_PLUGINS_ETS_RUNTIME_INTEROP_JS_ETS_PROXY_WRAPPERS_CACHE_H_ 63