1 /* 2 * Copyright (c) 2021-2023 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 LIBPANDABASE_UTILS_WORKERQUEUE_H 17 #define LIBPANDABASE_UTILS_WORKERQUEUE_H 18 19 #include <macros.h> 20 #include <os/thread.h> 21 22 #include <condition_variable> 23 #include <mutex> 24 25 namespace panda { 26 class WorkerJob { 27 public: WorkerJob()28 explicit WorkerJob() {}; 29 NO_COPY_SEMANTIC(WorkerJob); 30 NO_MOVE_SEMANTIC(WorkerJob); 31 virtual ~WorkerJob() = default; 32 33 virtual bool Run() = 0; 34 void DependsOn(WorkerJob *job); 35 void Signal(); 36 37 protected: 38 std::mutex m_; 39 std::condition_variable cond_; 40 std::vector<WorkerJob *> dependants_ {}; 41 size_t dependencies_ {0}; 42 }; 43 44 class WorkerQueue { 45 public: 46 explicit WorkerQueue(size_t threadCount); 47 NO_COPY_SEMANTIC(WorkerQueue); 48 NO_MOVE_SEMANTIC(WorkerQueue); 49 virtual ~WorkerQueue(); 50 51 virtual void Schedule() = 0; 52 53 bool Consume(); 54 void Wait(); 55 56 protected: 57 static bool Worker(WorkerQueue *queue); 58 59 std::vector<os::thread::native_handle_type> threads_; 60 std::mutex m_; 61 std::condition_variable jobsAvailable_; 62 std::condition_variable jobsFinished_; 63 std::vector<WorkerJob *> jobs_ {}; 64 size_t jobsCount_ {0}; 65 size_t activeWorkers_ {0}; 66 bool terminate_ {false}; 67 }; 68 } // namespace panda 69 70 #endif 71