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📁 ..
📄 backendid.h(1.1 KB)
📄 barrier.h(674 B)
📄 block.h(3.21 KB)
📄 buf.h(1.06 KB)
📄 buf_internals.h(12.24 KB)
📄 buffile.h(1.67 KB)
📄 bufmgr.h(9 KB)
📄 bufpage.h(14.91 KB)
📄 checksum.h(666 B)
📄 checksum_impl.h(8.59 KB)
📄 copydir.h(561 B)
📄 dsm.h(1.95 KB)
📄 dsm_impl.h(2.12 KB)
📄 fd.h(4.27 KB)
📄 freespace.h(1.36 KB)
📄 fsm_internals.h(2.26 KB)
📄 indexfsm.h(795 B)
📄 ipc.h(2.67 KB)
📄 item.h(469 B)
📄 itemid.h(4.24 KB)
📄 itemptr.h(3.93 KB)
📄 large_object.h(3.6 KB)
📄 latch.h(6.55 KB)
📄 lmgr.h(4.19 KB)
📄 lock.h(22.89 KB)
📄 lockdefs.h(1.86 KB)
📄 lwlock.h(9.19 KB)
📄 lwlocknames.h(2.42 KB)
📄 off.h(1.58 KB)
📄 pg_sema.h(2.39 KB)
📄 pg_shmem.h(2.23 KB)
📄 pmsignal.h(2.1 KB)
📄 pos.h(1.56 KB)
📄 predicate.h(2.56 KB)
📄 predicate_internals.h(16.96 KB)
📄 proc.h(10.81 KB)
📄 procarray.h(3.5 KB)
📄 procsignal.h(1.9 KB)
📄 reinit.h(592 B)
📄 relfilenode.h(3.81 KB)
📄 s_lock.h(28.64 KB)
📄 shm_mq.h(2.59 KB)
📄 shm_toc.h(2.01 KB)
📄 shmem.h(2.63 KB)
📄 sinval.h(5.41 KB)
📄 sinvaladt.h(1.58 KB)
📄 smgr.h(5.96 KB)
📄 spin.h(2.42 KB)
📄 standby.h(3.35 KB)
📄 standbydefs.h(2.25 KB)

Editing: standby.h

/*-------------------------------------------------------------------------
 *
 * standby.h
 *	  Definitions for hot standby mode.
 *
 *
 * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/storage/standby.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef STANDBY_H
#define STANDBY_H

#include "storage/standbydefs.h"
#include "storage/lock.h"
#include "storage/procsignal.h"
#include "storage/relfilenode.h"

/* User-settable GUC parameters */
extern int	vacuum_defer_cleanup_age;
extern int	max_standby_archive_delay;
extern int	max_standby_streaming_delay;

extern void InitRecoveryTransactionEnvironment(void);
extern void ShutdownRecoveryTransactionEnvironment(void);

extern void ResolveRecoveryConflictWithSnapshot(TransactionId latestRemovedXid,
									RelFileNode node);
extern void ResolveRecoveryConflictWithTablespace(Oid tsid);
extern void ResolveRecoveryConflictWithDatabase(Oid dbid);

extern void ResolveRecoveryConflictWithLock(LOCKTAG locktag);
extern void ResolveRecoveryConflictWithBufferPin(void);
extern void CheckRecoveryConflictDeadlock(void);
extern void StandbyDeadLockHandler(void);
extern void StandbyTimeoutHandler(void);
extern void StandbyLockTimeoutHandler(void);

/*
 * Standby Rmgr (RM_STANDBY_ID)
 *
 * Standby recovery manager exists to perform actions that are required
 * to make hot standby work. That includes logging AccessExclusiveLocks taken
 * by transactions and running-xacts snapshots.
 */
extern void StandbyAcquireAccessExclusiveLock(TransactionId xid, Oid dbOid, Oid relOid);
extern void StandbyReleaseLockTree(TransactionId xid,
					   int nsubxids, TransactionId *subxids);
extern void StandbyReleaseAllLocks(void);
extern void StandbyReleaseOldLocks(int nxids, TransactionId *xids);

#define MinSizeOfXactRunningXacts offsetof(xl_running_xacts, xids)

/*
 * Declarations for GetRunningTransactionData(). Similar to Snapshots, but
 * not quite. This has nothing at all to do with visibility on this server,
 * so this is completely separate from snapmgr.c and snapmgr.h.
 * This data is important for creating the initial snapshot state on a
 * standby server. We need lots more information than a normal snapshot,
 * hence we use a specific data structure for our needs. This data
 * is written to WAL as a separate record immediately after each
 * checkpoint. That means that wherever we start a standby from we will
 * almost immediately see the data we need to begin executing queries.
 */

typedef struct RunningTransactionsData
{
	int			xcnt;			/* # of xact ids in xids[] */
	int			subxcnt;		/* # of subxact ids in xids[] */
	bool		subxid_overflow;	/* snapshot overflowed, subxids missing */
	TransactionId nextXid;		/* copy of ShmemVariableCache->nextXid */
	TransactionId oldestRunningXid;		/* *not* oldestXmin */
	TransactionId latestCompletedXid;	/* so we can set xmax */

TransactionId *xids;		/* array of (sub)xids still running */
} RunningTransactionsData;

typedef RunningTransactionsData *RunningTransactions;

extern void LogAccessExclusiveLock(Oid dbOid, Oid relOid);
extern void LogAccessExclusiveLockPrepare(void);

extern XLogRecPtr LogStandbySnapshot(void);
extern void LogStandbyInvalidations(int nmsgs, SharedInvalidationMessage *msgs,
						bool relcacheInitFileInval);

#endif   /* STANDBY_H */

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Editing: standby.h

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