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Use the regular main processing loop also in walsenders.

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The regular backend's main loop handles signal handling and error recovery
better than the current WAL sender command loop does. For example, if the
client hangs and a SIGTERM is received before starting streaming, the
walsender will now terminate immediately, rather than hang until the
connection times out.
This commit is contained in:
Heikki Linnakangas
2012-10-05 17:13:07 +03:00
parent 1997f34db4
commit fd5942c18f
4 changed files with 109 additions and 232 deletions
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5
src/include/replication/walsender.h
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@@ -19,7 +19,6 @@
/* global state */
extern bool am_walsender;
extern bool am_cascading_walsender;
extern volatile sig_atomic_t walsender_shutdown_requested;
extern volatile sig_atomic_t walsender_ready_to_stop;
extern bool wake_wal_senders;
@@ -27,7 +26,9 @@ extern bool wake_wal_senders;
extern int max_wal_senders;
extern int replication_timeout;
extern void WalSenderMain(void) __attribute__((noreturn));
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);