postgresql/src/backend/utils
Michael Paquier cf29a11ef6 Retire src/backend/utils/misc/check_guc
This script has existed for a long time, and attempting to run it today
causes a lot of false positives as an effect of GUCs added in the last
couple of years.  An equivalent, automatically-run and cross-platform
solution is available in the TAP test introduced in b0a55f4.  So, let it
go.

Discussion: https://postgr.es/m/Yf9YGSwPiMu0c7fP@paquier.xyz
2022-02-09 12:10:31 +09:00
..
activity Remove MaxBackends variable in favor of GetMaxBackends() function. 2022-02-08 15:53:19 -05:00
adt Remove MaxBackends variable in favor of GetMaxBackends() function. 2022-02-08 15:53:19 -05:00
cache Add UNIQUE null treatment option 2022-02-03 11:48:21 +01:00
error Introduce log_destination=jsonlog 2022-01-17 10:16:53 +09:00
fmgr Update copyright for 2022 2022-01-07 19:04:57 -05:00
hash Update copyright for 2022 2022-01-07 19:04:57 -05:00
init Remove MaxBackends variable in favor of GetMaxBackends() function. 2022-02-08 15:53:19 -05:00
mb Update copyright for 2022 2022-01-07 19:04:57 -05:00
misc Retire src/backend/utils/misc/check_guc 2022-02-09 12:10:31 +09:00
mmgr Prevent memory context logging from sending log message to connected client. 2022-01-28 11:24:42 +09:00
resowner Update copyright for 2022 2022-01-07 19:04:57 -05:00
sort Add UNIQUE null treatment option 2022-02-03 11:48:21 +01:00
time Update copyright for 2022 2022-01-07 19:04:57 -05:00
.gitignore Rearrange makefile rules for running Gen_fmgrtab.pl. 2018-05-03 17:54:18 -04:00
errcodes.txt Update copyright for 2022 2022-01-07 19:04:57 -05:00
Gen_dummy_probes.pl Update copyright for 2022 2022-01-07 19:04:57 -05:00
Gen_dummy_probes.pl.prolog Update copyright for 2022 2022-01-07 19:04:57 -05:00
Gen_dummy_probes.sed Update copyright for 2022 2022-01-07 19:04:57 -05:00
Gen_fmgrtab.pl Update copyright for 2022 2022-01-07 19:04:57 -05:00
generate-errcodes.pl Update copyright for 2022 2022-01-07 19:04:57 -05:00
Makefile Update copyright for 2022 2022-01-07 19:04:57 -05:00
probes.d Update copyright for 2022 2022-01-07 19:04:57 -05:00
README.Gen_dummy_probes Tweak generation of Gen_dummy_probes.pl 2021-05-11 20:02:02 -04:00

# Generating dummy probes

If Postgres isn't configured with dtrace enabled, we need to generate
dummy probes for the entries in probes.d, that do nothing.

This is accomplished in Unix via the sed script `Gen_dummy_probes.sed`. We
used to use this in MSVC builds using the perl utility `psed`, which mimicked
sed. However, that utility disappeared from Windows perl distributions and so
we converted the sed script to a perl script to be used in MSVC builds.

We still keep the sed script as the authoritative source for generating
these dummy probes because except on Windows perl is not a hard requirement
when building from a tarball.

So, if you need to change the way dummy probes are generated, first change
the sed script, and when it's working generate the perl script. This can
be accomplished by using the perl utility s2p.

s2p is no longer part of the perl core, so it might not be on your system,
but it is available on CPAN and also in many package systems. e.g.
on Fedora it can be installed using `cpan App::s2p` or
`dnf install perl-App-s2p`.

The Makefile contains a recipe for regenerating Gen_dummy_probes.pl, so all
you need to do is once you have s2p installed is `make Gen_dummy_probes.pl`
Note that in a VPATH build this will generate the file in the vpath tree,
not the source tree.