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Tom Lane 2bdf1b2a2e Reserve a PGPROC slot and semaphore for the slotsync worker process. ... The need for this was missed in commit 93db6cbda, with the result being that if we launch a slotsync worker it would consume one of the PGPROCs in the max_connections pool. That could lead to inability to launch the worker, or to subsequent failures of connection requests that should have succeeded according to the configured settings. Rather than create some one-off infrastructure to support this, let's group the slotsync worker with the existing autovac launcher in a new category of "special worker" processes. These are kind of like auxiliary processes, but they cannot use that infrastructure because they need to be able to run transactions. For the moment, make these processes share the PGPROC freelist used for autovac workers (which previously supplied the autovac launcher too). This is partly to avoid an ABI change in v17, and partly because it seems silly to have a freelist with at most two members. This might be worth revisiting if we grow enough workers in this category. Tom Lane and Hou Zhijie. Back-patch to v17. Discussion: https://postgr.es/m/1808397.1735156190@sss.pgh.pa.us		1 year ago
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activity	Add backend-level statistics to pgstats	1 year ago
adt	Improve handling of date_trunc() units for infinite input values	1 year ago
cache	Remove pg_attribute.attcacheoff column	1 year ago
error	Remove useless casts to (void *)	1 year ago
fmgr	Fix some comments related to library unloading	1 year ago
hash	Remove useless casts to (void *)	1 year ago
init	Reserve a PGPROC slot and semaphore for the slotsync worker process.	1 year ago
mb	Remove dead generators for cyrillic encoding conversion tables	1 year ago
misc	Partial pgindent of .l and .y files	1 year ago
mmgr	Remove useless casts to (void *)	1 year ago
resowner	Remove unused typedefs	2 years ago
sort	Remove useless casts to (void *)	1 year ago
time	Don't allow GetTransactionSnapshot() in logical decoding	1 year ago
.gitignore	Rearrange makefile rules for running Gen_fmgrtab.pl.	8 years ago
Gen_dummy_probes.pl	Update copyright for 2024	2 years ago
Gen_fmgrtab.pl	Remove unused #include's from backend .c files	1 year ago
Makefile	Update copyright for 2024	2 years ago
errcodes.txt	Neaten up our choices of SQLSTATEs for XML-related errors.	1 year ago
generate-errcodes.pl	Update copyright for 2024	2 years ago
meson.build	Update copyright for 2024	2 years ago
postprocess_dtrace.sed	Update copyright for 2024	2 years ago
probes.d	Update copyright for 2024	2 years ago