99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
#ifndef FRAMEWORK_DATAPOOLGLOB_DATASET_H_
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#define FRAMEWORK_DATAPOOLGLOB_DATASET_H_
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#include "../datapool/PoolDataSetBase.h"
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/**
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* @brief The DataSet class manages a set of locally checked out variables
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* for the global data pool.
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* @details
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* This class uses the read-commit() semantic provided by the DataSetBase class.
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* It extends the base class by using the global data pool,
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* having a valid state and implementing lock und unlock calls for the global
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* datapool.
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*
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* For more information on how this class works, see the DataSetBase
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* documentation.
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* @author Bastian Baetz
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* @ingroup data_pool
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*/
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class GlobDataSet: public PoolDataSetBase {
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public:
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/**
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* @brief Creates an empty GlobDataSet. Use registerVariable or
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* supply a pointer to this dataset to PoolVariable
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* initializations to register pool variables.
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*/
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GlobDataSet();
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/**
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* @brief The destructor automatically manages writing the valid
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* information of variables.
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* @details
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* In case the data set was read out, but not committed(indicated by state),
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* the destructor parses all variables that are still registered to the set.
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* For each, the valid flag in the data pool is set to "invalid".
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*/
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~GlobDataSet();
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/**
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* Variant of method above which sets validity of all elements of the set.
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* @param valid Validity information from PoolVariableIF.
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* @return - @c RETURN_OK if all variables were read successfully.
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* - @c COMMITING_WITHOUT_READING if set was not read yet and
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* contains non write-only variables
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*/
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ReturnValue_t commit(bool valid, uint32_t lockTimeout = MutexIF::BLOCKING);
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ReturnValue_t commit(uint32_t lockTimeout = MutexIF::BLOCKING) override;
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/**
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* Set all entries
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* @param valid
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*/
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void setSetValid(bool valid);
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bool isValid() const override;
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/**
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* Set the valid information of all variables contained in the set which
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* are not read-only
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*
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* @param valid Validity information from PoolVariableIF.
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*/
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void setEntriesValid(bool valid);
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//!< This definition sets the maximum number of variables to
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//! register in one DataSet.
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static const uint8_t DATA_SET_MAX_SIZE = 63;
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private:
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/**
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* If the valid state of a dataset is always relevant to the whole
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* data set we can use this flag.
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*/
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bool valid = false;
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/**
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* @brief This is a small helper function to facilitate locking
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* the global data pool.
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* @details
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* It makes use of the lockDataPool method offered by the DataPool class.
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*/
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ReturnValue_t lockDataPool(uint32_t timeoutMs) override;
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/**
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* @brief This is a small helper function to facilitate
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* unlocking the global data pool
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* @details
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* It makes use of the freeDataPoolLock method offered by the DataPool class.
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*/
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ReturnValue_t unlockDataPool() override;
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void handleAlreadyReadDatasetCommit();
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ReturnValue_t handleUnreadDatasetCommit();
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PoolVariableIF* registeredVariables[DATA_SET_MAX_SIZE];
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};
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#endif /* FRAMEWORK_DATAPOOLGLOB_DATASET_H_ */
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