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| author | Jeff Davis <jdavis@postgresql.org> | 2023-02-20 11:29:31 -0800 |
|---|---|---|
| committer | Jeff Davis <jdavis@postgresql.org> | 2023-02-20 11:29:31 -0800 |
| commit | da32a99df1f519622eee0d5c3ea61226468272a7 (patch) | |
| tree | 0d39a914d02372e492d5e0065ecef480d2e75bba /src | |
| parent | 305d89ad93ff6eb3eecae485bbfb2531a349906f (diff) | |
| download | postgresql-da32a99df1f519622eee0d5c3ea61226468272a7.tar.gz postgresql-da32a99df1f519622eee0d5c3ea61226468272a7.zip | |
Limit memory usage of pg_walinspect functions.
GetWALRecordsInfo() and pg_get_wal_fpi_info() can leak memory across
WAL record iterations. Fix this by using a temporary memory context
that's reset for each WAL record iteraion.
Also use a temporary context for loops in GetXLogSummaryStats(). The
number of iterations is a small constant, so the previous behavior was
not a leak, but fix for clarity (but no need to backport).
Backport GetWALRecordsInfo() change to version
15. pg_get_wal_fpi_info() didn't exist in version 15.
Reported-by: Peter Geoghegan
Author: Bharath Rupireddy
Discussion: https://www.postgresql.org/message-id/CAH2-WznLEJjn7ghmKOABOEZYuJvkTk%3DGKU3m0%2B-XBAH%2BerPiJQ%40mail.gmail.com
Backpatch-through: 15
Diffstat (limited to 'src')
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