Sometimes the output to the stdout in Windows disappears

Victor Spirin <v.spirin@postgrespro.ru>

From: Victor Spirin <v.spirin@postgrespro.ru>

To: pgsql-hackers@lists.postgresql.org

Date: 2020-08-31T18:20:28Z

Lists: pgsql-hackers

Attachments

stdout.patch (text/plain) patch
test_clusterdb.pl (text/plain)

Hi!

Sometimes the output to stdout on Windows on multicore machines does not 
go through after connecting and disconnecting to the server using the 
PQconnectdbParams and PQfinish functions. I tested on 6 cores.

First we appeared this in some pgbench tests.  Then we found that this 
happens on any console program using PQconnectdbParams and PQfinish.

I am attaching a patch and a script for testing.

-- 
Victor Spirin
Postgres Professional:http://www.postgrespro.com
The Russian Postgres Company

Commits

In libpq for Windows, call WSAStartup once and WSACleanup not at all.
- cdc7ace161d3 9.6.20 landed
- 883226441d67 11.10 landed
- 6acc31a201d8 9.5.24 landed
- 6670e91078b3 10.15 landed
- d2074daebe16 13.1 landed
- 407580aabb83 12.5 landed
- 7d00a6b2de8a 14.0 landed
Update the Winsock API version requested by libpq.
- d5a9a661fcd2 14.0 landed