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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) 1996-2024, 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; extern void BackgroundWriterMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn(); extern void CheckpointerMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn(); 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 */