mirror of
https://github.com/postgres/postgres.git
synced 2025-04-21 12:05:57 +03:00
bcd5b4bcbe
Commit abb0b4fc03 moved the shared state for autoprewarm to a dynamic shared memory (DSM) segment, but it left apw_detach_shmem() in the on_shmem_exit callback list for the autoprewarm leader process. This is a problem because shmem_exit() detaches all the DSM segments prior to calling the on_shmem_exit callbacks, thus producing segfaults in the exit path for the autoprewarm leader process. To fix, move apw_detach_shmem() to the before_shmem_exit callback list. This commit also adds a check to pg_prewarm's test that the server shut down normally. It might be worth making this a common check for all shutdowns in TAP tests, but that is left as a future exercise. Reported-by: Andres Freund Reviewed-by: Andres Freund, Álvaro Herrera Discussion: https://postgr.es/m/20240122204117.swton324xcoodnyi%40awork3.anarazel.de
65 lines
1.7 KiB
Perl
65 lines
1.7 KiB
Perl
|
|
# Copyright (c) 2021-2024, PostgreSQL Global Development Group
|
|
|
|
use strict;
|
|
use warnings FATAL => 'all';
|
|
|
|
use PostgreSQL::Test::Cluster;
|
|
use PostgreSQL::Test::Utils;
|
|
use Test::More;
|
|
|
|
|
|
my $node = PostgreSQL::Test::Cluster->new('main');
|
|
|
|
$node->init;
|
|
$node->append_conf(
|
|
'postgresql.conf',
|
|
qq{shared_preload_libraries = 'pg_prewarm'
|
|
pg_prewarm.autoprewarm = true
|
|
pg_prewarm.autoprewarm_interval = 0});
|
|
$node->start;
|
|
|
|
# setup
|
|
$node->safe_psql("postgres",
|
|
"CREATE EXTENSION pg_prewarm;\n"
|
|
. "CREATE TABLE test(c1 int);\n"
|
|
. "INSERT INTO test SELECT generate_series(1, 100);");
|
|
|
|
# test read mode
|
|
my $result =
|
|
$node->safe_psql("postgres", "SELECT pg_prewarm('test', 'read');");
|
|
like($result, qr/^[1-9][0-9]*$/, 'read mode succeeded');
|
|
|
|
# test buffer_mode
|
|
$result =
|
|
$node->safe_psql("postgres", "SELECT pg_prewarm('test', 'buffer');");
|
|
like($result, qr/^[1-9][0-9]*$/, 'buffer mode succeeded');
|
|
|
|
# prefetch mode might or might not be available
|
|
my ($cmdret, $stdout, $stderr) =
|
|
$node->psql("postgres", "SELECT pg_prewarm('test', 'prefetch');");
|
|
ok( ( $stdout =~ qr/^[1-9][0-9]*$/
|
|
or $stderr =~ qr/prefetch is not supported by this build/),
|
|
'prefetch mode succeeded');
|
|
|
|
# test autoprewarm_dump_now()
|
|
$result = $node->safe_psql("postgres", "SELECT autoprewarm_dump_now();");
|
|
like($result, qr/^[1-9][0-9]*$/, 'autoprewarm_dump_now succeeded');
|
|
|
|
# restart, to verify that auto prewarm actually works
|
|
$node->restart;
|
|
|
|
$node->wait_for_log(
|
|
"autoprewarm successfully prewarmed [1-9][0-9]* of [0-9]+ previously-loaded blocks"
|
|
);
|
|
|
|
$node->stop;
|
|
|
|
# control file should indicate normal shut down
|
|
command_like(
|
|
[ 'pg_controldata', $node->data_dir() ],
|
|
qr/Database cluster state:\s*shut down/,
|
|
'cluster shut down normally');
|
|
|
|
done_testing();
|