mirror of
https://github.com/postgres/postgres.git
synced 2025-05-30 00:02:11 -04:00
239b175342
Modify the new event loop code from commit 7389aad6 so that it checks for work requested by signal handlers even if it doesn't see a latch event yet. This gives priority to shutdown and reload requests where the latch will be reported later in the event array, or in a later call to WaitEventSetWait(), due to scheduling details. In particular, this guarantees that a SIGHUP-then-connect sequence (as seen in authentication tests) causes the postmaster to process the reload before accepting the connection. If the WaitEventSetWait() call saw the socket as ready, and the reload signal was generated before the connection, then the latest time the signal handler should be able to run is after poll/epoll_wait/kevent returns but before we check the pending_pm_reload_request flag. While here, also shift the handling of child exit below reload requests, per Tom Lane's observation that that might start new processes, so we should make sure we pick up new settings first. This probably explains the one-off failure of build farm animal malleefowl. Reported-by: Hou Zhijie <houzj.fnst@fujitsu.com> Reported-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/OS0PR01MB57163D3BF2AB42ECAA94E5C394C29%40OS0PR01MB5716.jpnprd01.prod.outlook.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.