fsfw/datapool/PoolVariableIF.h
2020-08-13 20:53:35 +02:00

72 lines
2.1 KiB
C++

/*
* \file PoolVariableIF.h
*
* \brief This file contains the interface definition for pool variables.
*
* \date 10/17/2012
*
* \author Bastian Baetz
*/
#ifndef POOLVARIABLEIF_H_
#define POOLVARIABLEIF_H_
#include "../returnvalues/HasReturnvaluesIF.h"
#include "../serialize/SerializeIF.h"
/**
* \brief This interface is used to control local data pool variable representations.
*
* \details To securely handle data pool variables, all pool entries are locally managed by
* data pool variable access classes, which are called pool variables. To ensure a
* common state of a set of variables needed in a function, these local pool variables
* again are managed by other classes, e.g. the DataSet. This interface provides unified
* access to local pool variables for such manager classes.
* \ingroup data_pool
*/
class PoolVariableIF : public SerializeIF {
friend class DataSet;
protected:
/**
* \brief The commit call shall write back a newly calculated local value to the data pool.
*/
virtual ReturnValue_t commit() = 0;
/**
* \brief The read call shall read the value of this parameter from the data pool and store
* the content locally.
*/
virtual ReturnValue_t read() = 0;
public:
static const uint8_t VALID = 1;
static const uint8_t INVALID = 0;
static const uint32_t NO_PARAMETER = 0;
enum ReadWriteMode_t {
VAR_READ, VAR_WRITE, VAR_READ_WRITE
};
/**
* \brief This is an empty virtual destructor, as it is proposed for C++ interfaces.
*/
virtual ~PoolVariableIF() {
}
/**
* \brief This method returns if the variable is write-only, read-write or read-only.
*/
virtual ReadWriteMode_t getReadWriteMode() const = 0;
/**
* \brief This operation shall return the data pool id of the variable.
*/
virtual uint32_t getDataPoolId() const = 0;
/**
* \brief With this call, the valid information of the variable is returned.
*/
virtual bool isValid() const = 0;
/**
* \brief With this call, the valid information of the variable is set.
*/
virtual void setValid(uint8_t validity) = 0;
};
#endif /* POOLVARIABLEIF_H_ */