64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
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/****************************************************************************
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* OBIDMSColumn header file *
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****************************************************************************/
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/**
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* @file obidmscolumn.h
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* @author Celine Mercier
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* @date 12 May 2015
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* @brief Header file for the shared elements of all the OBIColumn structures.
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*/
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#ifndef OBIDMSCOLUMN_H_
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#define OBIDMSCOLUMN_H_
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include "obitypes.h"
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/**
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* @brief Value separator in OBIDMSColumn files.
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*/
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static const char SEPARATOR = '\n';
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/**
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* @brief Header size in OBIDMSColumn files.
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*/
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static const int HEADER_SIZE = 4096;
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/**
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* @brief Number of bytes to map
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*/
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static const int BUFFER_SIZE = 4;
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/**
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* @brief OBIColumnHeader structure.
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*/
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typedef struct OBIDMSColumnHeader {
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bool endyan_byte_order; /**< endyan byte order */
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int header_size_value; /**< size of the header: a multiple of PAGESIZE */
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bool file_status; /**< file status : 0 is Open and 1 is Closed */
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pid_t PID; /**< PID of the process that created the file and is
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the only one allowed to modify it if it is open */
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int line_count; /**< number of lines of data */
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OBIType_t data_type; /**< type of the data */
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char* creation_date; /**< date of creation of the file */
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int version; /**< version of the OBIColumn */
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char* comments; /**< comments */
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} OBIDMSColumnHeader_t, *OBIDMSColumnHeader_p;
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char* obi_map_read_only(int file, int start, int size);
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void obi_unmap(int size);
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#endif /* OBIDMSCOLUMN_H_ */
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