Adding upstream version 16.2.upstream/16.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 158 insertions, 0 deletions

diff --git a/src/include/access/xlogrecovery.h b/src/include/access/xlogrecovery.h
new file mode 100644
index 0000000..47c2935
--- /dev/null
+++ b/src/include/access/xlogrecovery.h
@@ -0,0 +1,158 @@
+/*
+ * xlogrecovery.h
+ *
+ * Functions for WAL recovery and standby mode
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/xlogrecovery.h
+ */
+#ifndef XLOGRECOVERY_H
+#define XLOGRECOVERY_H
+
+#include "access/xlogreader.h"
+#include "catalog/pg_control.h"
+#include "lib/stringinfo.h"
+#include "utils/timestamp.h"
+
+/*
+ * Recovery target type.
+ * Only set during a Point in Time recovery, not when in standby mode.
+ */
+typedef enum
+{
+	RECOVERY_TARGET_UNSET,
+	RECOVERY_TARGET_XID,
+	RECOVERY_TARGET_TIME,
+	RECOVERY_TARGET_NAME,
+	RECOVERY_TARGET_LSN,
+	RECOVERY_TARGET_IMMEDIATE
+} RecoveryTargetType;
+
+/*
+ * Recovery target TimeLine goal
+ */
+typedef enum
+{
+	RECOVERY_TARGET_TIMELINE_CONTROLFILE,
+	RECOVERY_TARGET_TIMELINE_LATEST,
+	RECOVERY_TARGET_TIMELINE_NUMERIC
+} RecoveryTargetTimeLineGoal;
+
+/* Recovery pause states */
+typedef enum RecoveryPauseState
+{
+	RECOVERY_NOT_PAUSED,		/* pause not requested */
+	RECOVERY_PAUSE_REQUESTED,	/* pause requested, but not yet paused */
+	RECOVERY_PAUSED				/* recovery is paused */
+} RecoveryPauseState;
+
+/* User-settable GUC parameters */
+extern PGDLLIMPORT bool recoveryTargetInclusive;
+extern PGDLLIMPORT int recoveryTargetAction;
+extern PGDLLIMPORT int recovery_min_apply_delay;
+extern PGDLLIMPORT char *PrimaryConnInfo;
+extern PGDLLIMPORT char *PrimarySlotName;
+extern PGDLLIMPORT char *recoveryRestoreCommand;
+extern PGDLLIMPORT char *recoveryEndCommand;
+extern PGDLLIMPORT char *archiveCleanupCommand;
+
+/* indirectly set via GUC system */
+extern PGDLLIMPORT TransactionId recoveryTargetXid;
+extern PGDLLIMPORT char *recovery_target_time_string;
+extern PGDLLIMPORT TimestampTz recoveryTargetTime;
+extern PGDLLIMPORT const char *recoveryTargetName;
+extern PGDLLIMPORT XLogRecPtr recoveryTargetLSN;
+extern PGDLLIMPORT RecoveryTargetType recoveryTarget;
+extern PGDLLIMPORT bool wal_receiver_create_temp_slot;
+extern PGDLLIMPORT RecoveryTargetTimeLineGoal recoveryTargetTimeLineGoal;
+extern PGDLLIMPORT TimeLineID recoveryTargetTLIRequested;
+extern PGDLLIMPORT TimeLineID recoveryTargetTLI;
+
+/* Have we already reached a consistent database state? */
+extern PGDLLIMPORT bool reachedConsistency;
+
+/* Are we currently in standby mode? */
+extern PGDLLIMPORT bool StandbyMode;
+
+extern Size XLogRecoveryShmemSize(void);
+extern void XLogRecoveryShmemInit(void);
+
+extern void InitWalRecovery(ControlFileData *ControlFile,
+							bool *wasShutdown_ptr, bool *haveBackupLabel_ptr,
+							bool *haveTblspcMap_ptr);
+extern void PerformWalRecovery(void);
+
+/*
+ * FinishWalRecovery() returns this.  It contains information about the point
+ * where recovery ended, and why it ended.
+ */
+typedef struct
+{
+	/*
+	 * Information about the last valid or applied record, after which new WAL
+	 * can be appended.  'lastRec' is the position where the last record
+	 * starts, and 'endOfLog' is its end.  'lastPage' is a copy of the last
+	 * partial page that contains endOfLog (or NULL if endOfLog is exactly at
+	 * page boundary).  'lastPageBeginPtr' is the position where the last page
+	 * begins.
+	 *
+	 * endOfLogTLI is the TLI in the filename of the XLOG segment containing
+	 * the last applied record.  It could be different from lastRecTLI, if
+	 * there was a timeline switch in that segment, and we were reading the
+	 * old WAL from a segment belonging to a higher timeline.
+	 */
+	XLogRecPtr	lastRec;		/* start of last valid or applied record */
+	TimeLineID	lastRecTLI;
+	XLogRecPtr	endOfLog;		/* end of last valid or applied record */
+	TimeLineID	endOfLogTLI;
+
+	XLogRecPtr	lastPageBeginPtr;	/* LSN of page that contains endOfLog */
+	char	   *lastPage;		/* copy of the last page, up to endOfLog */
+
+	/*
+	 * abortedRecPtr is the start pointer of a broken record at end of WAL
+	 * when recovery completes; missingContrecPtr is the location of the first
+	 * contrecord that went missing.  See CreateOverwriteContrecordRecord for
+	 * details.
+	 */
+	XLogRecPtr	abortedRecPtr;
+	XLogRecPtr	missingContrecPtr;
+
+	/* short human-readable string describing why recovery ended */
+	char	   *recoveryStopReason;
+
+	/*
+	 * If standby or recovery signal file was found, these flags are set
+	 * accordingly.
+	 */
+	bool		standby_signal_file_found;
+	bool		recovery_signal_file_found;
+} EndOfWalRecoveryInfo;
+
+extern EndOfWalRecoveryInfo *FinishWalRecovery(void);
+extern void ShutdownWalRecovery(void);
+extern void RemovePromoteSignalFiles(void);
+
+extern bool HotStandbyActive(void);
+extern XLogRecPtr GetXLogReplayRecPtr(TimeLineID *replayTLI);
+extern RecoveryPauseState GetRecoveryPauseState(void);
+extern void SetRecoveryPause(bool recoveryPause);
+extern void GetXLogReceiptTime(TimestampTz *rtime, bool *fromStream);
+extern TimestampTz GetLatestXTime(void);
+extern TimestampTz GetCurrentChunkReplayStartTime(void);
+extern XLogRecPtr GetCurrentReplayRecPtr(TimeLineID *replayEndTLI);
+
+extern bool PromoteIsTriggered(void);
+extern bool CheckPromoteSignal(void);
+extern void WakeupRecovery(void);
+
+extern void StartupRequestWalReceiverRestart(void);
+extern void XLogRequestWalReceiverReply(void);
+
+extern void RecoveryRequiresIntParameter(const char *param_name, int currValue, int minValue);
+
+extern void xlog_outdesc(StringInfo buf, XLogReaderState *record);
+
+#endif							/* XLOGRECOVERY_H */