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| author | Thomas Munro <tmunro@postgresql.org> | 2018-09-18 22:56:36 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2018-09-18 23:19:22 +1200 |
| commit | fb389498be5c2cb4c694dfe347f6736fda0960aa (patch) | |
| tree | 43008d1b7ef9ec0b364a614c623fbd91097c0776 /src/backend/executor/execCurrent.c | |
| parent | 9b14bbd52c8caf5ac92b0e8088684fc72f070c33 (diff) | |
| download | postgresql-fb389498be5c2cb4c694dfe347f6736fda0960aa.tar.gz postgresql-fb389498be5c2cb4c694dfe347f6736fda0960aa.zip | |
Allow DSM allocation to be interrupted.
Chris Travers reported that the startup process can repeatedly try to
cancel a backend that is in a posix_fallocate()/EINTR loop and cause it
to loop forever. Teach the retry loop to give up if an interrupt is
pending. Don't actually check for interrupts in that loop though,
because a non-local exit would skip some clean-up code in the caller.
Back-patch to 9.4 where DSM was added (and posix_fallocate() was later
back-patched).
Author: Chris Travers
Reviewed-by: Ildar Musin, Murat Kabilov, Oleksii Kliukin
Tested-by: Oleksii Kliukin
Discussion: https://postgr.es/m/CAN-RpxB-oeZve_J3SM_6%3DHXPmvEG%3DHX%2B9V9pi8g2YR7YW0rBBg%40mail.gmail.com
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