event_loop.h

Go to the documentation of this file.

/* * NRP Core - Backend infrastructure to synchronize simulations
 *
 * Copyright 2020-2023 NRP Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This project has received funding from the European Union’s Horizon 2020
 * Framework Programme for Research and Innovation under the Specific Grant
 * Agreement No. 945539 (Human Brain Project SGA3).
 */
 
#ifndef EVENT_LOOP_H
#define EVENT_LOOP_H
 
#include "nrp_event_loop/event_loop/event_loop_interface.h"
 
#include "nrp_event_loop/computational_graph/computational_graph_manager.h"
#include "nrp_event_loop/computational_graph/input_node.h"
#include "nrp_event_loop/computational_graph/output_node.h"
 
#include "nrp_general_library/utils/time_utils.h"
#include "nrp_event_loop/nodes/time/input_time.h"
 
#include "nrp_general_library/utils/python_interpreter_state.h"
 
#include <nlohmann/json.hpp>
 
class EventLoop : public EventLoopInterface
{
    public:
 
        EventLoop(const nlohmann::json &graph_config, std::chrono::milliseconds timestep, std::chrono::milliseconds timestepThres,
                  ComputationalGraph::ExecMode execMode = ComputationalGraph::ExecMode::ALL_NODES,
                  bool ownGIL = true, bool spinROS = false);
 
        ~EventLoop();
 
    protected:
 
        void initializeCB() override;
 
        void runLoopCB() override;
 
        void shutdownCB() override;
 
    private:
    
        nlohmann::json _graph_config;
        ComputationalGraph::ExecMode _execMode;
        bool _ownGIL;
        bool _spinROS;
        PyGILState_STATE _pyGILState;
        InputClockNode* _clock = nullptr;
        InputIterationNode* _iteration = nullptr;
 
};
 
 
#endif // EVENT_LOOP_H