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 PANDA_TOOLING_INSPECTOR_EVENT_LOOP_H 17 #define PANDA_TOOLING_INSPECTOR_EVENT_LOOP_H 18 19 namespace panda::tooling::inspector { 20 class EventLoop { 21 public: 22 // Pause the running event loop. 23 bool Pause(); 24 25 // Execute ready event handlers without blocking. 26 virtual bool Poll() = 0; 27 28 // Run the event loop until paused. 29 void Run(); 30 31 // Run at most one event loop handler, may block. 32 virtual bool RunOne() = 0; 33 34 private: 35 bool running_ {false}; 36 }; 37 } // namespace panda::tooling::inspector 38 39 #endif // PANDA_TOOLING_INSPECTOR_EVENT_LOOP_H 40