46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* bgwriter.h
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* Exports from postmaster/bgwriter.c and postmaster/checkpointer.c.
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*
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* The bgwriter process used to handle checkpointing duties too. Now
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* there is a separate process, but we did not bother to split this header.
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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*
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* src/include/postmaster/bgwriter.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _BGWRITER_H
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#define _BGWRITER_H
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#include "storage/block.h"
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#include "storage/relfilelocator.h"
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#include "storage/smgr.h"
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#include "storage/sync.h"
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/* GUC options */
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extern PGDLLIMPORT int BgWriterDelay;
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extern PGDLLIMPORT int CheckPointTimeout;
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extern PGDLLIMPORT int CheckPointWarning;
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extern PGDLLIMPORT double CheckPointCompletionTarget;
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extern void BackgroundWriterMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn();
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extern void CheckpointerMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn();
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extern void RequestCheckpoint(int flags);
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extern void CheckpointWriteDelay(int flags, double progress);
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extern bool ForwardSyncRequest(const FileTag *ftag, SyncRequestType type);
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extern void AbsorbSyncRequests(void);
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extern Size CheckpointerShmemSize(void);
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extern void CheckpointerShmemInit(void);
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extern bool FirstCallSinceLastCheckpoint(void);
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#endif /* _BGWRITER_H */
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