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/*-------------------------------------------------------------------------
*
* bgwriter.h
* Exports from postmaster/bgwriter.c and postmaster/checkpointer.c.
*
* The bgwriter process used to handle checkpointing duties too. Now
* there is a separate process, but we did not bother to split this header.
*
* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
*
* src/include/postmaster/bgwriter.h
*
*-------------------------------------------------------------------------
*/
#ifndef _BGWRITER_H
#define _BGWRITER_H
#include "storage/block.h"
#include "storage/relfilelocator.h"
#include "storage/smgr.h"
#include "storage/sync.h"
/* GUC options */
extern PGDLLIMPORT int BgWriterDelay;
extern PGDLLIMPORT int CheckPointTimeout;
extern PGDLLIMPORT int CheckPointWarning;
extern PGDLLIMPORT double CheckPointCompletionTarget;
pg_noreturn extern void BackgroundWriterMain(const void *startup_data, size_t startup_data_len);
pg_noreturn extern void CheckpointerMain(const void *startup_data, size_t startup_data_len);
extern void RequestCheckpoint(int flags);
extern void CheckpointWriteDelay(int flags, double progress);
extern bool ForwardSyncRequest(const FileTag *ftag, SyncRequestType type);
extern void AbsorbSyncRequests(void);
extern Size CheckpointerShmemSize(void);
extern void CheckpointerShmemInit(void);
extern bool FirstCallSinceLastCheckpoint(void);
#endif /* _BGWRITER_H */
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