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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/**
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* @file
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* @brief
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*
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* @author Thomas Escher
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*/
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#ifndef CACHE_IO_H
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#define CACHE_IO_H
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#include <string>
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/**
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* @brief Serialization management for binary data, intended for use in CacheHandlers.
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*
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* This class manages the assignment of unique IDs for CacheHandlers to use to identify their files.
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* Data is (de)serialized via read and write calls and existance (if so, the file-/datasize too) can be checked via check.
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* All files are created in a directory given by createTemporaryDirectory which has to be called before and read/writes to function properly. All files are named 'ddddd.tco' starting from zero.
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*/
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class CacheIO {
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public:
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typedef std::string IDType;
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//! Create a directory for temporary cache objects to save in
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static void createTemporaryDirectory(std::string& path);
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//! Clean up temporary files
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static void removeTemporaryDirectory();
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//! Creates a unique Id to use for these functions
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static IDType getId();
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//! Check if a physical representation of this cache entry exists and returns non-zero size for the data
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static unsigned int check(IDType& id);
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//! Read from file into the data pointer
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static void read(IDType& id, char* data);
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//! Write data into a file represented by id
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static void write(IDType& id, char* data, unsigned int size);
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private:
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static std::string path;
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static unsigned int free_id;
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};
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#endif //CACHE_IO_H
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