138 lines
4.5 KiB
C++
138 lines
4.5 KiB
C++
/**
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* @file RandomDataSource.h
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* @brief Header file for class RandomDataSource
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* @date 07/06/2018
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* @author Andre Neto
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*
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* @copyright Copyright 2015 F4E | European Joint Undertaking for ITER and
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* the Development of Fusion Energy ('Fusion for Energy').
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* Licensed under the EUPL, Version 1.1 or - as soon they will be approved
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* by the European Commission - subsequent versions of the EUPL (the "Licence")
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* You may not use this work except in compliance with the Licence.
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* You may obtain a copy of the Licence at: http://ec.europa.eu/idabc/eupl
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*
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* @warning Unless required by applicable law or agreed to in writing,
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* software distributed under the Licence is distributed on an "AS IS"
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* basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the Licence permissions and limitations under the Licence.
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* @details This header file contains the declaration of the class RandomDataSource
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* with all of its public, protected and private members. It may also include
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* definitions for inline methods which need to be visible to the compiler.
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*/
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#ifndef RANDOM_DATASOURCE_H_
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#define RANDOM_DATASOURCE_H_
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/*---------------------------------------------------------------------------*/
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/* Standard header includes */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/* Project header includes */
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/*---------------------------------------------------------------------------*/
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#include "DataSourceI.h"
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/*---------------------------------------------------------------------------*/
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/* Class declaration */
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/*---------------------------------------------------------------------------*/
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/**
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* @brief DataDource which generates random numbers against a given seed.
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*
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* The configuration syntax is (names and signal quantities are only given as an example):
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* +RandomDataSource = {
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* Class = RandomDataSource
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* Seed = 8 //Seed against which the the seed will be generated. Note that each signal
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* Signals = {
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* Random1 = { //Maximum one signal
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* Type = uint64 //All the integer types are supported
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* }
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* }
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* }
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*/
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class RandomDataSource: public MARTe::DataSourceI {
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public:
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CLASS_REGISTER_DECLARATION()
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/**
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* @brief Constructor. NOOP.
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*/
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RandomDataSource ();
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/**
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* @brief Destructor. NOOP.
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*/
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virtual ~RandomDataSource();
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/**
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* @brief The configuration data detailed in the class description
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* @return true if all the compulsory parameters are set.
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*/
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virtual bool Initialise(MARTe::StructuredDataI & data);
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/**
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* @brief Verifies that at most one signal has been set with the correct type (i.e. any integer).
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* @return true if the above conditions are met.
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*/
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virtual bool SetConfiguredDatabase(MARTe::StructuredDataI & data);
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/**
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* @brief @see DataSourceI::Synchronise
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*/
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virtual bool Synchronise();
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/**
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* @brief @see DataSourceI::AllocateMemory
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*/
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virtual bool AllocateMemory();
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/**
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* @brief @see DataSourceI::GetSignalMemoryBuffer
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*/
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virtual bool GetSignalMemoryBuffer(const MARTe::uint32 signalIdx, const MARTe::uint32 bufferIdx, void *&signalAddress);
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/**
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* @return "MemoryMapSynchronisedInputBroker"
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*/
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virtual const MARTe::char8 *GetBrokerName(MARTe::StructuredDataI &data, const MARTe::SignalDirection direction);
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/**
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* @brief NOOP
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*/
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virtual bool PrepareNextState(const MARTe::char8 * const currentStateName, const MARTe::char8 * const nextStateName);
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private:
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/**
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* The seed to compute the signals.
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*/
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MARTe::uint32 seed;
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/**
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* The signal pointer
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*/
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MARTe::char8 *signalPtr;
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/**
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* The signal type descriptor.
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*/
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MARTe::TypeDescriptor signalTypeDescriptor;
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/**
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* Compute the random value
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*/
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template<typename T>
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void GetValue();
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};
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/*---------------------------------------------------------------------------*/
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/* Inline method definitions */
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/*---------------------------------------------------------------------------*/
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template<typename T>
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void RandomDataSource::GetValue() {
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*(reinterpret_cast<T *>(&signalPtr[0u])) = static_cast<T>(rand_r(&seed));
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}
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#endif /* RANDOM_DATASOURCE_H_ */
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