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Fix signal handling in logical replication workers

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The logical replication worker processes now use the normal die()
handler for SIGTERM and CHECK_FOR_INTERRUPTS() instead of custom code.
One problem before was that the apply worker would not exit promptly
when a subscription was dropped, which could lead to deadlocks.

Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>
Reported-by: Masahiko Sawada <sawada.mshk@gmail.com>
This commit is contained in:
Peter Eisentraut
2017-06-02 14:46:00 -04:00
parent acbd8375e9
commit 9fcf670c2e
6 changed files with 50 additions and 21 deletions
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4
src/include/replication/worker_internal.h
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@ -67,8 +67,6 @@ extern Subscription *MySubscription;
extern LogicalRepWorker *MyLogicalRepWorker;
extern bool in_remote_transaction;
extern volatile sig_atomic_t got_SIGHUP;
extern volatile sig_atomic_t got_SIGTERM;
extern void logicalrep_worker_attach(int slot);
extern LogicalRepWorker *logicalrep_worker_find(Oid subid, Oid relid,
@ -81,8 +79,6 @@ extern void logicalrep_worker_wakeup_ptr(LogicalRepWorker *worker);
extern int logicalrep_sync_worker_count(Oid subid);
extern void logicalrep_worker_sighup(SIGNAL_ARGS);
extern void logicalrep_worker_sigterm(SIGNAL_ARGS);
extern char *LogicalRepSyncTableStart(XLogRecPtr *origin_startpos);
void process_syncing_tables(XLogRecPtr current_lsn);
void invalidate_syncing_table_states(Datum arg, int cacheid,