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Wire up query cancel interrupt for walsender backends.

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This allows to cancel commands run over replication connections. While
it might have some use before v10, it has become important now that
normal SQL commands are allowed in database connected walsender
connections.

Author: Petr Jelinek
Reviewed-By: Andres Freund, Michael Paquier
Discussion: https://postgr.es/m/7966f454-7cd7-2b0c-8b70-cdca9d5a8c97@2ndquadrant.com
This commit is contained in:
Andres Freund 2017-06-05 18:53:41 -07:00
parent 6e1dd2773e
commit c1abe6c786
1 changed files with 1 additions and 1 deletions
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2
src/backend/replication/walsender.c
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@ -2929,7 +2929,7 @@ WalSndSignals(void)
/* Set up signal handlers */ /* Set up signal handlers */
pqsignal(SIGHUP, PostgresSigHupHandler); /* set flag to read config pqsignal(SIGHUP, PostgresSigHupHandler); /* set flag to read config
* file */ * file */
pqsignal(SIGINT, SIG_IGN); /* not used */ pqsignal(SIGINT, StatementCancelHandler); /* query cancel */
pqsignal(SIGTERM, die); /* request shutdown */ pqsignal(SIGTERM, die); /* request shutdown */
pqsignal(SIGQUIT, quickdie); /* hard crash time */ pqsignal(SIGQUIT, quickdie); /* hard crash time */
InitializeTimeouts(); /* establishes SIGALRM handler */ InitializeTimeouts(); /* establishes SIGALRM handler */