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 META_INTERFACE_ILOCKABLE_H 17 #define META_INTERFACE_ILOCKABLE_H 18 19 #include <cstdint> 20 21 #include <core/plugin/intf_interface.h> 22 23 #include <meta/base/interface_macros.h> 24 #include <meta/base/namespace.h> 25 #include <meta/base/types.h> 26 27 META_BEGIN_NAMESPACE() 28 29 /** 30 * @brief Support locking 31 */ 32 META_REGISTER_INTERFACE(ILockable, "79ff7f69-93aa-43cb-b6f0-49ace40927ac") 33 class ILockable : public CORE_NS::IInterface { 34 META_INTERFACE(CORE_NS::IInterface, ILockable) 35 public: 36 /** 37 * @brief Unique lock, lock for writing 38 */ 39 virtual void Lock() const = 0; 40 virtual void Unlock() const = 0; 41 42 /** 43 * @brief Shared lock, lock for reading. This gives the implementation possibility 44 * to provide better granularity but might be implemented as unique lock as well. 45 */ 46 virtual void LockShared() const = 0; 47 virtual void UnlockShared() const = 0; 48 }; 49 50 META_REGISTER_INTERFACE(IRecursivelyLockable, "77d7c7bb-2973-4477-acd8-86f7a21eff30") 51 /** 52 * @brief Recursive version of the lockable. 53 */ 54 class IRecursivelyLockable : public ILockable { 55 META_INTERFACE(CORE_NS::IInterface, IRecursivelyLockable) 56 }; 57 58 enum class LockType { NO_LOCK = 0, UNIQUE_LOCK = 1, SHARED_LOCK = 2 }; 59 60 META_END_NAMESPACE() 61 62 #endif 63