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Tom Lane 596a7c8df7 Increase MAX_SYSCACHE_CALLBACKS to provide more room for extensions. 
Increase from the historical value of 32 to 64.  We are up to 31 callers
of CacheRegisterSyscacheCallback() in HEAD, so if they were all to be
exercised in one process that would leave only one slot for add-on modules.
It's probably not possible for that to happen, but still we clearly need
more daylight here.  (At some point it might be worth making the array
dynamically resizable; but since we've never heard a complaint of "out of
syscache_callback_list slots" happening in the field, I doubt it's worth
it yet.)

Back-patch as far as 9.4, which is where we increased the companion limit
MAX_RELCACHE_CALLBACKS (cf commit f01d1ae3a).  It's not as urgent in
released branches, which have only a couple dozen call sites in core, but
it still seems that somebody might hit the limit before these branches die.

Discussion: https://postgr.es/m/12184.1494450131@sss.pgh.pa.us
2017-05-11 14:51:21 -04:00
..
backend Increase MAX_SYSCACHE_CALLBACKS to provide more room for extensions. 2017-05-11 14:51:21 -04:00
bin Rename WAL-related functions and views to use "lsn" not "location". 2017-05-11 11:49:59 -04:00
common Add PQencryptPasswordConn function to libpq, use it in psql and createuser. 2017-05-03 11:19:07 +03:00
fe_utils Allow psql variable substitution to occur in backtick command strings. 2017-04-01 21:44:54 -04:00
include Rename WAL-related functions and views to use "lsn" not "location". 2017-05-11 11:49:59 -04:00
interfaces Restore PGREQUIRESSL recognition in libpq. 2017-05-08 07:24:24 -07:00
makefiles Try to fix non-MSVC Windows builds in the wake of logical replication. 2017-01-20 12:51:31 -05:00
pl Improve castNode notation by introducing list-extraction-specific variants. 2017-04-10 13:51:53 -04:00
port Run the postmaster's signal handlers without SA_RESTART. 2017-04-24 13:00:30 -04:00
template Remove "sco" and "unixware" ports. 2016-10-11 11:26:04 -04:00
test Rename WAL-related functions and views to use "lsn" not "location". 2017-05-11 11:49:59 -04:00
timezone Guard against null t->tm_zone in strftime.c. 2017-05-07 12:33:12 -04:00
tools pgindent: use HTTP instead of FTP to retrieve pg_bsd_indent src 2017-05-09 09:28:44 -04:00
tutorial Recommend wrappers of PG_DETOAST_DATUM_PACKED(). 2017-03-12 19:35:33 -04:00
.gitignore
DEVELOPERS
Makefile Remove redundant coverage target 2017-02-17 08:56:57 -05:00
Makefile.global.in Remove use of Jade and DSSSL 2017-04-06 22:09:11 -04:00
Makefile.shlib Remove support for bcc and msvc standalone libpq builds 2017-04-11 15:22:21 +02:00
nls-global.mk nls-global.mk: search build dir for source files, too 2016-06-07 18:55:18 -04:00