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postgresql/src/include/utils
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Tom Lane 3804539e48 Replace random(), pg_erand48(), etc with a better PRNG API and algorithm. 
Standardize on xoroshiro128** as our basic PRNG algorithm, eliminating
a bunch of platform dependencies as well as fundamentally-obsolete PRNG
code.  In addition, this API replacement will ease replacing the
algorithm again in future, should that become necessary.

xoroshiro128** is a few percent slower than the drand48 family,
but it can produce full-width 64-bit random values not only 48-bit,
and it should be much more trustworthy.  It's likely to be noticeably
faster than the platform's random(), depending on which platform you
are thinking about; and we can have non-global state vectors easily,
unlike with random().  It is not cryptographically strong, but neither
are the functions it replaces.

Fabien Coelho, reviewed by Dean Rasheed, Aleksander Alekseev, and myself

Discussion: https://postgr.es/m/alpine.DEB.2.22.394.2105241211230.165418@pseudo
 		2021-11-28 21:33:07 -05:00
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.gitignore Revert "Add gitignore entries for jsonpath_gram.h" 2019-03-23 00:19:34 +01:00
acl.h Fix has_column_privilege function corner case 2021-03-31 13:55:25 -04:00
aclchk_internal.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
array.h Prevent integer overflows in array subscripting calculations. 2021-05-10 10:44:38 -04:00
arrayaccess.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ascii.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
attoptcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
backend_progress.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
backend_status.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
builtins.h Revert refactoring of hex code to src/common/ 2021-08-19 09:20:13 +09:00
bytea.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
cash.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
catcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
combocid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
date.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datetime.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datum.h Allow Memoize to operate in binary comparison mode 2021-11-24 10:06:59 +13:00
dsa.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
dynahash.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
elog.h Add macro PGWARNING, and make PGERROR available on all platforms. 2021-04-11 13:22:56 -04:00
evtcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandeddatum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandedrecord.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
float.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
fmgrtab.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
formatting.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
freepage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
geo_decls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
guc.h Support "postgres -C" with runtime-computed GUCs 2021-09-16 10:59:26 +09:00
guc_tables.h Revert recovery prefetching feature. 2021-05-10 16:06:09 +12:00
help_config.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
hsearch.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
index_selfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inet.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
int8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inval.h Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY. 2021-10-23 18:36:38 -07:00
json.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonb.h Implementation of subscripting for jsonb 2021-01-31 23:50:40 +03:00
jsonfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonpath.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
logtape.h Refactor LogicalTapeSet/LogicalTape interface. 2021-10-18 14:46:01 +03:00
lsyscache.h Preserve pg_attribute.attstattarget across REINDEX CONCURRENTLY 2021-02-10 13:06:48 +09:00
memdebug.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
memutils.h Add function to log the memory contexts of specified backend process. 2021-04-06 13:44:15 +09:00
multirangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
numeric.h Allow numeric scale to be negative or greater than precision. 2021-07-26 14:13:47 +01:00
old_snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
palloc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
partcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_crc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_locale.h Revert per-index collation version tracking feature. 2021-05-07 21:10:11 +12:00
pg_lsn.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_rusage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pidfile.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
plancache.h Improve performance of repeated CALLs within plpgsql procedures. 2021-01-25 22:28:29 -05:00
portal.h Fix Portal snapshot tracking to handle subtransactions properly. 2021-10-01 11:10:12 -04:00
ps_status.h Refactor ps_status.c API 2020-03-11 16:38:31 +01:00
queryenvironment.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
queryjumble.h Pre branch pgindent / pgperltidy run 2021-06-28 11:05:54 -04:00
rangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
regproc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rel.h Replace RelationOpenSmgr() with RelationGetSmgr(). 2021-07-12 17:01:36 -04:00
relcache.h Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY. 2021-10-23 18:36:38 -07:00
relfilenodemap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relmapper.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relptr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
reltrigger.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner_private.h Refactor HMAC implementations 2021-04-03 17:30:49 +09:00
rls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ruleutils.h Extended statistics on expressions 2021-03-27 00:01:11 +01:00
sampling.h Replace random(), pg_erand48(), etc with a better PRNG API and algorithm. 2021-11-28 21:33:07 -05:00
selfuncs.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
sharedtuplestore.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
snapmgr.h Fix Portal snapshot tracking to handle subtransactions properly. 2021-10-01 11:10:12 -04:00
snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sortsupport.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
spccache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
syscache.h Allow publishing the tables of schema. 2021-10-27 07:44:52 +05:30
timeout.h Report progress of startup operations that take a long time. 2021-10-25 11:51:57 -04:00
timestamp.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tuplesort.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tuplestore.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
typcache.h Fix typo 2021-08-25 10:14:51 +02:00
tzparser.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
uuid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
varbit.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
varlena.h Let regexp_replace() make use of REG_NOSUB when feasible. 2021-08-09 20:53:25 -04:00
wait_event.h Report wait events for local shell commands like archive_command. 2021-11-22 10:28:21 +09:00
xid8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xml.h Update copyright for 2021 2021-01-02 13:06:25 -05:00