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| author | Peter Eisentraut <peter@eisentraut.org> | 2021-05-03 12:11:33 +0200 |
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| committer | Peter Eisentraut <peter@eisentraut.org> | 2021-05-03 12:18:27 +0200 |
| commit | b94409a02f6122d77b5154e481c0819fed6b4c95 (patch) | |
| tree | ef9754045429b159a6b9d3384ca1d25331b05415 /src/backend/regex/regcomp.c | |
| parent | c285babf8f44d86b7fd1e73e9e4f94456b825bfb (diff) | |
| download | postgresql-b94409a02f6122d77b5154e481c0819fed6b4c95.tar.gz postgresql-b94409a02f6122d77b5154e481c0819fed6b4c95.zip | |
Prevent lwlock dtrace probes from unnecessary work
If dtrace is compiled in but disabled, the lwlock dtrace probes still
evaluate their arguments. Since PostgreSQL 13, T_NAME(lock) does
nontrivial work, so it should be avoided if not needed. To fix, make
these calls conditional on the *_ENABLED() macro corresponding to each
probe.
Reviewed-by: Craig Ringer <craig.ringer@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/CAGRY4nwxKUS_RvXFW-ugrZBYxPFFM5kjwKT5O+0+Stuga5b4+Q@mail.gmail.com
Diffstat (limited to 'src/backend/regex/regcomp.c')
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