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00001 /*------------------------------------------------------------------------- 00002 * 00003 * syncrep.h 00004 * Exports from replication/syncrep.c. 00005 * 00006 * Portions Copyright (c) 2010-2013, PostgreSQL Global Development Group 00007 * 00008 * IDENTIFICATION 00009 * src/include/replication/syncrep.h 00010 * 00011 *------------------------------------------------------------------------- 00012 */ 00013 #ifndef _SYNCREP_H 00014 #define _SYNCREP_H 00015 00016 #include "access/xlogdefs.h" 00017 #include "utils/guc.h" 00018 00019 #define SyncRepRequested() \ 00020 (max_wal_senders > 0 && synchronous_commit > SYNCHRONOUS_COMMIT_LOCAL_FLUSH) 00021 00022 /* SyncRepWaitMode */ 00023 #define SYNC_REP_NO_WAIT -1 00024 #define SYNC_REP_WAIT_WRITE 0 00025 #define SYNC_REP_WAIT_FLUSH 1 00026 00027 #define NUM_SYNC_REP_WAIT_MODE 2 00028 00029 /* syncRepState */ 00030 #define SYNC_REP_NOT_WAITING 0 00031 #define SYNC_REP_WAITING 1 00032 #define SYNC_REP_WAIT_COMPLETE 2 00033 00034 /* user-settable parameters for synchronous replication */ 00035 extern char *SyncRepStandbyNames; 00036 00037 /* called by user backend */ 00038 extern void SyncRepWaitForLSN(XLogRecPtr XactCommitLSN); 00039 00040 /* called at backend exit */ 00041 extern void SyncRepCleanupAtProcExit(void); 00042 00043 /* called by wal sender */ 00044 extern void SyncRepInitConfig(void); 00045 extern void SyncRepReleaseWaiters(void); 00046 00047 /* called by wal writer */ 00048 extern void SyncRepUpdateSyncStandbysDefined(void); 00049 00050 /* called by various procs */ 00051 extern int SyncRepWakeQueue(bool all, int mode); 00052 00053 extern bool check_synchronous_standby_names(char **newval, void **extra, GucSource source); 00054 extern void assign_synchronous_commit(int newval, void *extra); 00055 00056 #endif /* _SYNCREP_H */
1.7.1