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/*------------------------------------------------------------------------- * * walsender.h * Exports from replication/walsender.c. * * Portions Copyright (c) 2010-2016, PostgreSQL Global Development Group * * src/include/replication/walsender.h * *------------------------------------------------------------------------- */ #ifndef _WALSENDER_H #define _WALSENDER_H #include <signal.h> #include "fmgr.h" /* global state */ extern bool am_walsender; extern bool am_cascading_walsender; extern bool am_db_walsender; extern bool wake_wal_senders; /* user-settable parameters */ extern int max_wal_senders; extern int wal_sender_timeout; extern bool log_replication_commands; extern void InitWalSender(void); extern void exec_replication_command(const char *query_string); extern void WalSndErrorCleanup(void); extern void WalSndSignals(void); extern Size WalSndShmemSize(void); extern void WalSndShmemInit(void); extern void WalSndWakeup(void); extern void WalSndInitStopping(void); extern void WalSndWaitStopping(void); extern void HandleWalSndInitStopping(void); extern void WalSndRqstFileReload(void); extern Datum pg_stat_get_wal_senders(PG_FUNCTION_ARGS); /* * Remember that we want to wakeup walsenders later * * This is separated from doing the actual wakeup because the writeout is done * while holding contended locks. */ #define WalSndWakeupRequest() \ do { wake_wal_senders = true; } while (0) /* * wakeup walsenders if there is work to be done */ #define WalSndWakeupProcessRequests() \ do \ { \ if (wake_wal_senders) \ { \ wake_wal_senders = false; \ if (max_wal_senders > 0) \ WalSndWakeup(); \ } \ } while (0) #endif /* _WALSENDER_H */