greenplumn datapagemap 源码
greenplumn datapagemap 代码
文件路径：/src/bin/pg_rewind/datapagemap.h
/*-------------------------------------------------------------------------
*
* datapagemap.h
*
* Copyright (c) 2013-2019, PostgreSQL Global Development Group
*
*-------------------------------------------------------------------------
*/
#ifndef DATAPAGEMAP_H
#define DATAPAGEMAP_H
#include "storage/relfilenode.h"
#include "storage/block.h"
struct datapagemap
{
char *bitmap;
int bitmapsize;
};
typedef struct datapagemap datapagemap_t;
typedef struct datapagemap_iterator datapagemap_iterator_t;
extern void datapagemap_add(datapagemap_t *map, BlockNumber blkno);
extern datapagemap_iterator_t *datapagemap_iterate(datapagemap_t *map);
extern bool datapagemap_next(datapagemap_iterator_t *iter, BlockNumber *blkno);
extern void datapagemap_print(datapagemap_t *map);
#endif /* DATAPAGEMAP_H */
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