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Andres Freund 3801532918 Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 
Previously we used pg_atomic_write_64_impl inside
pg_atomic_init_u64. That works correctly, but on platforms without
64bit single copy atomicity it could trigger spurious valgrind errors
about uninitialized memory, because we use compare_and_swap for atomic
writes on such platforms.

I previously suppressed one instance of this problem (6c878edc1d),
but as Tom reports that wasn't enough. As the atomic variable cannot
yet be concurrently accessible during initialization, it seems better
to have pg_atomic_init_64_impl set the value directly.

Change pg_atomic_init_u32_impl for symmetry.

Reported-By: Tom Lane
Author: Andres Freund
Discussion: https://postgr.es/m/1714601.1591503815@sss.pgh.pa.us
Backpatch: 9.5-
2020-06-08 20:04:10 -07:00
..
access Get rid of trailing semicolons in C macro definitions. 2020-05-01 17:28:01 -04:00
bootstrap pgindent run for 9.5 2015-05-23 21:35:49 -04:00
catalog Heed lock protocol in DROP OWNED BY 2020-05-06 12:29:41 -04:00
commands Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
common Fix integer-overflow problems in interval comparison. 2017-04-05 23:51:28 -04:00
datatype Define integer limits independently from the system definitions. 2015-04-02 17:43:35 +02:00
executor Fix failure with initplans used conditionally during EvalPlanQual rechecks. 2018-09-15 13:42:34 -04:00
fe_utils Empty search_path in Autovacuum and non-psql/pgbench clients. 2018-02-26 07:39:48 -08:00
foreign Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
lib Revert "Permit dump/reload of not-too-large >1GB tuples" 2016-12-06 12:45:49 -03:00
libpq Fix detection of passwords hashed with MD5 2019-04-24 09:05:30 +09:00
mb Teach UtfToLocal/LocalToUtf to support algorithmic encoding conversions. 2015-05-14 22:27:12 -04:00
nodes Revert "Skip WAL for new relfilenodes, under wal_level=minimal." 2020-03-22 09:24:15 -07:00
optimizer Fix incorrect handling of join clauses pushed into parameterized paths. 2018-04-19 15:49:12 -04:00
parser Require the schema qualification in pg_temp.type_name(arg). 2019-08-05 07:48:45 -07:00
port Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 2020-06-08 20:04:10 -07:00
portability Use mmap MAP_NOSYNC option to limit shared memory writes 2015-03-21 22:06:19 -04:00
postmaster Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
regex Suppress compiler warnings about useless comparison of unsigned to zero. 2016-02-15 17:11:52 -05:00
replication Set ReorderBufferTXN->final_lsn more eagerly 2020-01-17 18:00:39 -03:00
rewrite Defend against self-referential views in relation_is_updatable(). 2019-11-21 16:21:44 -05:00
snowball Update copyright for 2015 2015-01-06 11:43:47 -05:00
storage Revert "Skip WAL for new relfilenodes, under wal_level=minimal." 2020-03-22 09:24:15 -07:00
tcop Fix event triggers for partitioned tables 2018-10-06 19:17:46 -03:00
tsearch Fix statically allocated struct with FLEXIBLE_ARRAY_MEMBER member. 2015-02-20 17:50:18 -05:00
utils Preserve clustered index after rewrites with ALTER TABLE 2020-04-06 11:06:07 +09:00
.gitignore Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
c.h Fix integer-overflow edge case detection in interval_mul and pgbench. 2019-11-07 11:23:04 -05:00
fmgr.h Revert addition of PGDLLEXPORT in PG_FUNCTION_INFO_V1 macro. 2016-10-12 18:02:03 -04:00
funcapi.h Avoid holding a directory FD open across assorted SRF calls. 2020-03-16 21:05:29 -04:00
getaddrinfo.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
getopt_long.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
Makefile Empty search_path in Autovacuum and non-psql/pgbench clients. 2018-02-26 07:39:48 -08:00
miscadmin.h Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
pg_config.h.in Avoid thread-safety problem in ecpglib. 2019-01-21 23:18:58 -05:00
pg_config.h.win32 Stamp 9.5.22. 2020-05-11 17:16:09 -04:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32 Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Further reduce the number of semaphores used under --disable-spinlocks. 2016-04-18 13:33:07 -04:00
pg_getopt.h Use our own getopt() on OpenBSD. 2019-01-18 15:06:26 -05:00
pg_trace.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
pgstat.h Add GUC variables for stat tracking and timeout as PGDLLIMPORT 2020-01-21 13:47:13 +09:00
pgtar.h Adopt the GNU convention for handling tar-archive members exceeding 8GB. 2015-11-21 20:21:32 -05:00
pgtime.h Mark assorted variables PGDLLIMPORT. 2017-12-05 09:30:57 -05:00
port.h Fix misc typos in comments. 2019-01-23 13:46:51 +02:00
postgres.h Adjust DatumGetBool macro, this time for sure. 2016-04-28 11:51:08 -04:00
postgres_ext.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
postgres_fe.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
rusagestub.h Update copyright for 2015 2015-01-06 11:43:47 -05:00
windowapi.h Update copyright for 2015 2015-01-06 11:43:47 -05:00