1 // Copyright 2022 The gRPC Authors 2 // 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 #ifndef GRPC_SRC_CORE_LIB_EVENT_ENGINE_HANDLE_CONTAINERS_H 15 #define GRPC_SRC_CORE_LIB_EVENT_ENGINE_HANDLE_CONTAINERS_H 16 17 #include <grpc/event_engine/event_engine.h> 18 #include <grpc/support/port_platform.h> 19 #include <stddef.h> 20 21 #include <cstdint> 22 #include <utility> 23 24 #include "absl/container/flat_hash_set.h" 25 #include "absl/hash/hash.h" 26 27 namespace grpc_event_engine { 28 namespace experimental { 29 30 // Used for heterogeneous lookup of TaskHandles in abseil containers. 31 template <typename TaskHandle> 32 struct TaskHandleComparator { 33 struct Hash { 34 using HashType = std::pair<const intptr_t, const intptr_t>; 35 using is_transparent = void; operatorTaskHandleComparator::Hash36 size_t operator()(const TaskHandle& handle) const { 37 return absl::Hash<HashType>()({handle.keys[0], handle.keys[1]}); 38 } 39 }; 40 }; 41 42 using TaskHandleSet = 43 absl::flat_hash_set<EventEngine::TaskHandle, 44 TaskHandleComparator<EventEngine::TaskHandle>::Hash>; 45 46 using ConnectionHandleSet = absl::flat_hash_set< 47 EventEngine::ConnectionHandle, 48 TaskHandleComparator<EventEngine::ConnectionHandle>::Hash>; 49 50 } // namespace experimental 51 } // namespace grpc_event_engine 52 53 #endif // GRPC_SRC_CORE_LIB_EVENT_ENGINE_HANDLE_CONTAINERS_H 54