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Refactor sharedfileset.c to separate out fileset implementation.

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Move fileset related implementation out of sharedfileset.c to allow its
usage by backends that don't want to share filesets among different
processes. After this split, fileset infrastructure is used by both
sharedfileset.c and worker.c for the named temporary files that survive
across transactions.

Author: Dilip Kumar, based on suggestion by Andres Freund
Reviewed-by: Hou Zhijie, Masahiko Sawada, Amit Kapila
Discussion: https://postgr.es/m/E1mCC6U-0004Ik-Fs@gemulon.postgresql.org
This commit is contained in:
Amit Kapila
2021-08-30 08:45:35 +05:30
parent d3fa876578
commit dcac5e7ac1
14 changed files with 368 additions and 336 deletions
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14
src/include/storage/buffile.h
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@@ -26,7 +26,7 @@
#ifndef BUFFILE_H
#define BUFFILE_H
#include "storage/sharedfileset.h"
#include "storage/fileset.h"
/* BufFile is an opaque type whose details are not known outside buffile.c. */
@@ -46,11 +46,11 @@ extern int BufFileSeekBlock(BufFile *file, long blknum);
extern int64 BufFileSize(BufFile *file);
extern long BufFileAppend(BufFile *target, BufFile *source);
extern BufFile *BufFileCreateShared(SharedFileSet *fileset, const char *name);
extern void BufFileExportShared(BufFile *file);
extern BufFile *BufFileOpenShared(SharedFileSet *fileset, const char *name,
int mode);
extern void BufFileDeleteShared(SharedFileSet *fileset, const char *name);
extern void BufFileTruncateShared(BufFile *file, int fileno, off_t offset);
extern BufFile *BufFileCreateFileSet(FileSet *fileset, const char *name);
extern void BufFileExportFileSet(BufFile *file);
extern BufFile *BufFileOpenFileSet(FileSet *fileset, const char *name,
int mode);
extern void BufFileDeleteFileSet(FileSet *fileset, const char *name);
extern void BufFileTruncateFileSet(BufFile *file, int fileno, off_t offset);
#endif /* BUFFILE_H */