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postgresql/src/include/catalog
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Robert Haas 32fd2b57d7 Be clear about whether a recovery pause has taken effect. 
Previously, the code and documentation seem to have essentially
assumed than a call to pg_wal_replay_pause() would take place
immediately, but that's not the case, because we only check for a
pause in certain places. This means that a tool that uses this
function and then wants to do something else afterward that is
dependent on the pause having taken effect doesn't know how long it
needs to wait to be sure that no more WAL is going to be replayed.

To avoid that, add a new function pg_get_wal_replay_pause_state()
which returns either 'not paused', 'paused requested', or 'paused'.
After calling pg_wal_replay_pause() the status will immediate change
from 'not paused' to 'pause requested'; when the startup process
has noticed this, the status will change to 'pause'.  For backward
compatibility, pg_is_wal_replay_paused() still exists and returns
the same thing as before: true if a pause has been requested,
whether or not it has taken effect yet; and false if not.
The documentation is updated to clarify.

To improve the changes that a pause request is quickly confirmed
effective, adjust things so that WaitForWALToBecomeAvailable will
swiftly reach a call to recoveryPausesHere() when a pause request
is made.

Dilip Kumar, reviewed by Simon Riggs, Kyotaro Horiguchi, Yugo Nagata,
Masahiko Sawada, and Bharath Rupireddy.

Discussion: http://postgr.es/m/CAFiTN-vcLLWEm8Zr%3DYK83rgYrT9pbC8VJCfa1kY9vL3AUPfu6g%40mail.gmail.com
2021-03-11 15:07:03 -05:00
..
.gitignore Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
binary_upgrade.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
catalog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
catversion.h Track total amounts of times spent writing and syncing WAL data to disk. 2021-03-09 16:52:06 +09:00
dependency.h Prevent drop of tablespaces used by partitioned relations 2021-01-14 15:32:14 -03:00
duplicate_oids Update copyright for 2021 2021-01-02 13:06:25 -05:00
genbki.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
heap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
index.h Add TABLESPACE option to REINDEX 2021-02-04 14:34:20 +09:00
indexing.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
Makefile Update copyright for 2021 2021-01-02 13:06:25 -05:00
namespace.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
objectaccess.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
objectaddress.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
partition.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_aggregate.dat Add bit_xor aggregate function 2021-03-06 19:28:05 +01:00
pg_aggregate.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_am.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_am.h Add primary keys and unique constraints to system catalogs 2021-01-30 19:44:29 +01:00
pg_amop.dat Run reformat-dat-files to declutter the catalog data files. 2021-01-13 16:14:38 -05:00
pg_amop.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_amproc.dat Run reformat-dat-files to declutter the catalog data files. 2021-01-13 16:14:38 -05:00
pg_amproc.h Add primary keys and unique constraints to system catalogs 2021-01-30 19:44:29 +01:00
pg_attrdef.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_attribute.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_auth_members.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_authid.dat Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_authid.h Add primary keys and unique constraints to system catalogs 2021-01-30 19:44:29 +01:00
pg_cast.dat Run reformat-dat-files to declutter the catalog data files. 2021-01-13 16:14:38 -05:00
pg_cast.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_class.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_class.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_collation.dat Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_collation.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_constraint.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_control.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_conversion.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_conversion.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_database.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_database.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_db_role_setting.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_default_acl.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_depend.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_description.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_enum.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_event_trigger.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_extension.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_foreign_data_wrapper.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_foreign_server.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_foreign_table.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_index.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_inherits.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_init_privs.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_language.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_language.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_largeobject.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_largeobject_metadata.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_namespace.dat Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_namespace.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_opclass.dat Run reformat-dat-files to declutter the catalog data files. 2021-01-13 16:14:38 -05:00
pg_opclass.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_operator.dat Add TID Range Scans to support efficient scanning ranges of TIDs 2021-02-27 22:59:36 +13:00
pg_operator.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_opfamily.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_opfamily.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_partitioned_table.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_policy.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_proc.dat Be clear about whether a recovery pause has taken effect. 2021-03-11 15:07:03 -05:00
pg_proc.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_publication.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_publication_rel.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_range.dat Run reformat-dat-files to declutter the catalog data files. 2021-01-13 16:14:38 -05:00
pg_range.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_replication_origin.h Add primary keys and unique constraints to system catalogs 2021-01-30 19:44:29 +01:00
pg_rewrite.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_seclabel.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_sequence.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_shdepend.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_shdescription.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_shseclabel.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_statistic.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_statistic_ext.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_statistic_ext_data.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_subscription.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_subscription_rel.h Allow multiple xacts during table sync in logical replication. 2021-02-12 07:41:51 +05:30
pg_tablespace.dat Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_tablespace.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_transform.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_trigger.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
pg_ts_config.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_ts_config.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_ts_config_map.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_ts_config_map.h Add primary keys and unique constraints to system catalogs 2021-01-30 19:44:29 +01:00
pg_ts_dict.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_ts_dict.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_ts_parser.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_ts_parser.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_ts_template.dat Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_ts_template.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_type.dat Implementation of subscripting for jsonb 2021-01-31 23:50:40 +03:00
pg_type.h Remove special BKI_LOOKUP magic for namespace and role OIDs. 2021-02-03 12:01:48 -05:00
pg_user_mapping.h Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
reformat_dat_file.pl Update copyright for 2021 2021-01-02 13:06:25 -05:00
renumber_oids.pl Update copyright for 2021 2021-01-02 13:06:25 -05:00
storage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
storage_xlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
toasting.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
unused_oids Update copyright for 2021 2021-01-02 13:06:25 -05:00