init

db_include/postmaster/bgwriter.h

@@ -0,0 +1,45 @@
+/*-------------------------------------------------------------------------
+ *
+ * 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) 1996-2021, PostgreSQL Global Development Group
+ *
+ * src/include/postmaster/bgwriter.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _BGWRITER_H
+#define _BGWRITER_H
+
+#include "storage/block.h"
+#include "storage/relfilenode.h"
+#include "storage/smgr.h"
+#include "storage/sync.h"
+
+
+/* GUC options */
+extern int	BgWriterDelay;
+extern int	CheckPointTimeout;
+extern int	CheckPointWarning;
+extern double CheckPointCompletionTarget;
+
+extern void BackgroundWriterMain(void) pg_attribute_noreturn();
+extern void CheckpointerMain(void) 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 */