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postgresql/src/include/replication/worker_internal.h

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Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/*-------------------------------------------------------------------------
*
* worker_internal.h
* Internal headers shared by logical replication workers.
*
Update copyright for 2018 Backpatch-through: certain files through 9.3
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* Portions Copyright (c) 2016-2018, PostgreSQL Global Development Group
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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*
* src/include/replication/worker_internal.h
*
*-------------------------------------------------------------------------
*/
#ifndef WORKER_INTERNAL_H
#define WORKER_INTERNAL_H
Make header self-contained Add necessary include files for things used in the header. (signal.h needed for sig_atomic_t.)
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#include <signal.h>
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#include "access/xlogdefs.h"
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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#include "catalog/pg_subscription.h"
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#include "datatype/timestamp.h"
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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#include "storage/lock.h"
typedef struct LogicalRepWorker
{
Fix various concurrency issues in logical replication worker launching The code was originally written with assumption that launcher is the only process starting the worker. However that hasn't been true since commit 7c4f52409 which failed to modify the worker management code adequately. This patch adds an in_use field to the LogicalRepWorker struct to indicate whether the worker slot is being used and uses proper locking everywhere this flag is set or read. However if the parent process dies while the new worker is starting and the new worker fails to attach to shared memory, this flag would never get cleared. We solve this rare corner case by adding a sort of garbage collector for in_use slots. This uses another field in the LogicalRepWorker struct named launch_time that contains the time when the worker was started. If any request to start a new worker does not find free slot, we'll check for workers that were supposed to start but took too long to actually do so, and reuse their slot. In passing also fix possible race conditions when stopping a worker that hasn't finished starting yet. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by: Fujii Masao <masao.fujii@gmail.com>
2017-04-26 10:43:04 -04:00
/* Time at which this worker was launched. */
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TimestampTz launch_time;
Fix various concurrency issues in logical replication worker launching The code was originally written with assumption that launcher is the only process starting the worker. However that hasn't been true since commit 7c4f52409 which failed to modify the worker management code adequately. This patch adds an in_use field to the LogicalRepWorker struct to indicate whether the worker slot is being used and uses proper locking everywhere this flag is set or read. However if the parent process dies while the new worker is starting and the new worker fails to attach to shared memory, this flag would never get cleared. We solve this rare corner case by adding a sort of garbage collector for in_use slots. This uses another field in the LogicalRepWorker struct named launch_time that contains the time when the worker was started. If any request to start a new worker does not find free slot, we'll check for workers that were supposed to start but took too long to actually do so, and reuse their slot. In passing also fix possible race conditions when stopping a worker that hasn't finished starting yet. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by: Fujii Masao <masao.fujii@gmail.com>
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/* Indicates if this slot is used or free. */
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bool in_use;
Fix various concurrency issues in logical replication worker launching The code was originally written with assumption that launcher is the only process starting the worker. However that hasn't been true since commit 7c4f52409 which failed to modify the worker management code adequately. This patch adds an in_use field to the LogicalRepWorker struct to indicate whether the worker slot is being used and uses proper locking everywhere this flag is set or read. However if the parent process dies while the new worker is starting and the new worker fails to attach to shared memory, this flag would never get cleared. We solve this rare corner case by adding a sort of garbage collector for in_use slots. This uses another field in the LogicalRepWorker struct named launch_time that contains the time when the worker was started. If any request to start a new worker does not find free slot, we'll check for workers that were supposed to start but took too long to actually do so, and reuse their slot. In passing also fix possible race conditions when stopping a worker that hasn't finished starting yet. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by: Fujii Masao <masao.fujii@gmail.com>
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/* Increased everytime the slot is taken by new worker. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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uint16 generation;
Fix various concurrency issues in logical replication worker launching The code was originally written with assumption that launcher is the only process starting the worker. However that hasn't been true since commit 7c4f52409 which failed to modify the worker management code adequately. This patch adds an in_use field to the LogicalRepWorker struct to indicate whether the worker slot is being used and uses proper locking everywhere this flag is set or read. However if the parent process dies while the new worker is starting and the new worker fails to attach to shared memory, this flag would never get cleared. We solve this rare corner case by adding a sort of garbage collector for in_use slots. This uses another field in the LogicalRepWorker struct named launch_time that contains the time when the worker was started. If any request to start a new worker does not find free slot, we'll check for workers that were supposed to start but took too long to actually do so, and reuse their slot. In passing also fix possible race conditions when stopping a worker that hasn't finished starting yet. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Reported-by: Fujii Masao <masao.fujii@gmail.com>
2017-04-26 10:43:04 -04:00
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Pointer to proc array. NULL if not running. */
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PGPROC *proc;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Database id to connect to. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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Oid dbid;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* User to use for connection (will be same as owner of subscription). */
Post-PG 10 beta1 pgindent run perltidy run not included.
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Oid userid;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Subscription id for the worker. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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Oid subid;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Used for initial table synchronization. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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Oid relid;
char relstate;
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
XLogRecPtr relstate_lsn;
slock_t relmutex;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Stats. */
XLogRecPtr last_lsn;
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TimestampTz last_send_time;
TimestampTz last_recv_time;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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XLogRecPtr reply_lsn;
Post-PG 10 beta1 pgindent run perltidy run not included.
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TimestampTz reply_time;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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} LogicalRepWorker;
Improve memory use in logical replication apply Previously, the memory used by the logical replication apply worker for processing messages would never be freed, so that could end up using a lot of memory. To improve that, change the existing ApplyContext memory context to ApplyMessageContext and reset that after every message (similar to MessageContext used elsewhere). For consistency of naming, rename the ApplyCacheContext to ApplyContext. Author: Stas Kelvich <s.kelvich@postgrespro.ru>
2017-05-09 14:40:42 -04:00
/* Main memory context for apply worker. Permanent during worker lifetime. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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extern MemoryContext ApplyContext;
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* libpqreceiver connection */
Post-PG 10 beta1 pgindent run perltidy run not included.
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extern struct WalReceiverConn *wrconn;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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/* Worker and subscription objects. */
Post-PG 10 beta1 pgindent run perltidy run not included.
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extern Subscription *MySubscription;
extern LogicalRepWorker *MyLogicalRepWorker;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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Post-PG 10 beta1 pgindent run perltidy run not included.
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extern bool in_remote_transaction;
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
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extern void logicalrep_worker_attach(int slot);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
extern LogicalRepWorker *logicalrep_worker_find(Oid subid, Oid relid,
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bool only_running);
Only kill sync workers at commit time in subscription DDL This allows a transaction abort to avoid killing those workers. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>
2017-08-04 21:14:35 -04:00
extern List *logicalrep_workers_find(Oid subid, bool only_running);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
extern void logicalrep_worker_launch(Oid dbid, Oid subid, const char *subname,
Post-PG 10 beta1 pgindent run perltidy run not included.
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Oid userid, Oid relid);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
extern void logicalrep_worker_stop(Oid subid, Oid relid);
Only kill sync workers at commit time in subscription DDL This allows a transaction abort to avoid killing those workers. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>
2017-08-04 21:14:35 -04:00
extern void logicalrep_worker_stop_at_commit(Oid subid, Oid relid);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
extern void logicalrep_worker_wakeup(Oid subid, Oid relid);
extern void logicalrep_worker_wakeup_ptr(LogicalRepWorker *worker);
Post-PG 10 beta1 pgindent run perltidy run not included.
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extern int logicalrep_sync_worker_count(Oid subid);
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
2017-01-19 12:00:00 -05:00
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
extern char *LogicalRepSyncTableStart(XLogRecPtr *origin_startpos);
Post-PG 10 beta1 pgindent run perltidy run not included.
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void process_syncing_tables(XLogRecPtr current_lsn);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
void invalidate_syncing_table_states(Datum arg, int cacheid,
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uint32 hashvalue);
Logical replication support for initial data copy Add functionality for a new subscription to copy the initial data in the tables and then sync with the ongoing apply process. For the copying, add a new internal COPY option to have the COPY source data provided by a callback function. The initial data copy works on the subscriber by receiving COPY data from the publisher and then providing it locally into a COPY that writes to the destination table. A WAL receiver can now execute full SQL commands. This is used here to obtain information about tables and publications. Several new options were added to CREATE and ALTER SUBSCRIPTION to control whether and when initial table syncing happens. Change pg_dump option --no-create-subscription-slots to --no-subscription-connect and use the new CREATE SUBSCRIPTION ... NOCONNECT option for that. Author: Petr Jelinek <petr.jelinek@2ndquadrant.com> Tested-by: Erik Rijkers <er@xs4all.nl>
2017-03-23 08:36:36 -04:00
static inline bool
am_tablesync_worker(void)
{
return OidIsValid(MyLogicalRepWorker->relid);
}
Logical replication - Add PUBLICATION catalogs and DDL - Add SUBSCRIPTION catalog and DDL - Define logical replication protocol and output plugin - Add logical replication workers From: Petr Jelinek <petr@2ndquadrant.com> Reviewed-by: Steve Singer <steve@ssinger.info> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Erik Rijkers <er@xs4all.nl> Reviewed-by: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
2017-01-19 12:00:00 -05:00
Phase 2 of pgindent updates. Change pg_bsd_indent to follow upstream rules for placement of comments to the right of code, and remove pgindent hack that caused comments following #endif to not obey the general rule. Commit e3860ffa4dd0dad0dd9eea4be9cc1412373a8c89 wasn't actually using the published version of pg_bsd_indent, but a hacked-up version that tried to minimize the amount of movement of comments to the right of code. The situation of interest is where such a comment has to be moved to the right of its default placement at column 33 because there's code there. BSD indent has always moved right in units of tab stops in such cases --- but in the previous incarnation, indent was working in 8-space tab stops, while now it knows we use 4-space tabs. So the net result is that in about half the cases, such comments are placed one tab stop left of before. This is better all around: it leaves more room on the line for comment text, and it means that in such cases the comment uniformly starts at the next 4-space tab stop after the code, rather than sometimes one and sometimes two tabs after. Also, ensure that comments following #endif are indented the same as comments following other preprocessor commands such as #else. That inconsistency turns out to have been self-inflicted damage from a poorly-thought-through post-indent "fixup" in pgindent. This patch is much less interesting than the first round of indent changes, but also bulkier, so I thought it best to separate the effects. Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 15:18:54 -04:00
#endif /* WORKER_INTERNAL_H */
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