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Commit a333476b authored by Andres Freund's avatar Andres Freund
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Split wait event related code from pgstat.[ch] into wait_event.[ch]. 

The wait event related code is independent from the rest of the
pgstat.[ch] code, of nontrivial size and changes on a regular
basis. Put it into its own set of files.

As there doesn't seem to be a good pre-existing directory for code
like this, add src/backend/utils/activity.
Reviewed-By: default avatarRobert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/20210316195440.twxmlov24rr2nxrg@alap3.anarazel.de
parent 1267d986
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src/backend/postmaster/pgstat.c
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src/backend/utils/Makefile
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......@@ -14,7 +14,20 @@ top_builddir = ../../..
include $(top_builddir)/src/Makefile.global
OBJS = fmgrtab.o
SUBDIRS = adt cache error fmgr hash init mb misc mmgr resowner sort time
SUBDIRS = \
activity \
adt \
cache \
error \
fmgr \
hash \
init \
mb \
misc \
mmgr \
resowner \
sort \
time
# location of Catalog.pm
catalogdir = $(top_srcdir)/src/backend/catalog
......
src/backend/utils/activity/Makefile 0 → 100644
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#-------------------------------------------------------------------------
#
# Makefile for backend/utils/activity
#
# Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
# Portions Copyright (c) 1994, Regents of the University of California
#
# src/backend/utils/activity/Makefile
#
#-------------------------------------------------------------------------
subdir = src/backend/utils/activity
top_builddir = ../../../..
include $(top_builddir)/src/Makefile.global
OBJS = \
wait_event.o
include $(top_srcdir)/src/backend/common.mk
src/backend/utils/activity/wait_event.c 0 → 100644
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src/include/pgstat.h
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......@@ -17,9 +17,9 @@
#include "port/atomics.h"
#include "portability/instr_time.h"
#include "postmaster/pgarch.h"
#include "storage/proc.h"
#include "utils/hsearch.h"
#include "utils/relcache.h"
#include "utils/wait_event.h" /* for backward compatibility */
/* ----------
......@@ -897,222 +897,6 @@ typedef enum BackendState
STATE_DISABLED
} BackendState;
/* ----------
* Wait Classes
* ----------
*/
#define PG_WAIT_LWLOCK 0x01000000U
#define PG_WAIT_LOCK 0x03000000U
#define PG_WAIT_BUFFER_PIN 0x04000000U
#define PG_WAIT_ACTIVITY 0x05000000U
#define PG_WAIT_CLIENT 0x06000000U
#define PG_WAIT_EXTENSION 0x07000000U
#define PG_WAIT_IPC 0x08000000U
#define PG_WAIT_TIMEOUT 0x09000000U
#define PG_WAIT_IO 0x0A000000U
/* ----------
* Wait Events - Activity
*
* Use this category when a process is waiting because it has no work to do,
* unless the "Client" or "Timeout" category describes the situation better.
* Typically, this should only be used for background processes.
* ----------
*/
typedef enum
{
WAIT_EVENT_ARCHIVER_MAIN = PG_WAIT_ACTIVITY,
WAIT_EVENT_AUTOVACUUM_MAIN,
WAIT_EVENT_BGWRITER_HIBERNATE,
WAIT_EVENT_BGWRITER_MAIN,
WAIT_EVENT_CHECKPOINTER_MAIN,
WAIT_EVENT_LOGICAL_APPLY_MAIN,
WAIT_EVENT_LOGICAL_LAUNCHER_MAIN,
WAIT_EVENT_PGSTAT_MAIN,
WAIT_EVENT_RECOVERY_WAL_STREAM,
WAIT_EVENT_SYSLOGGER_MAIN,
WAIT_EVENT_WAL_RECEIVER_MAIN,
WAIT_EVENT_WAL_SENDER_MAIN,
WAIT_EVENT_WAL_WRITER_MAIN
} WaitEventActivity;
/* ----------
* Wait Events - Client
*
* Use this category when a process is waiting to send data to or receive data
* from the frontend process to which it is connected. This is never used for
* a background process, which has no client connection.
* ----------
*/
typedef enum
{
WAIT_EVENT_CLIENT_READ = PG_WAIT_CLIENT,
WAIT_EVENT_CLIENT_WRITE,
WAIT_EVENT_GSS_OPEN_SERVER,
WAIT_EVENT_LIBPQWALRECEIVER_CONNECT,
WAIT_EVENT_LIBPQWALRECEIVER_RECEIVE,
WAIT_EVENT_SSL_OPEN_SERVER,
WAIT_EVENT_WAL_SENDER_WAIT_WAL,
WAIT_EVENT_WAL_SENDER_WRITE_DATA,
} WaitEventClient;
/* ----------
* Wait Events - IPC
*
* Use this category when a process cannot complete the work it is doing because
* it is waiting for a notification from another process.
* ----------
*/
typedef enum
{
WAIT_EVENT_APPEND_READY = PG_WAIT_IPC,
WAIT_EVENT_BACKUP_WAIT_WAL_ARCHIVE,
WAIT_EVENT_BGWORKER_SHUTDOWN,
WAIT_EVENT_BGWORKER_STARTUP,
WAIT_EVENT_BTREE_PAGE,
WAIT_EVENT_BUFFER_IO,
WAIT_EVENT_CHECKPOINT_DONE,
WAIT_EVENT_CHECKPOINT_START,
WAIT_EVENT_EXECUTE_GATHER,
WAIT_EVENT_HASH_BATCH_ALLOCATE,
WAIT_EVENT_HASH_BATCH_ELECT,
WAIT_EVENT_HASH_BATCH_LOAD,
WAIT_EVENT_HASH_BUILD_ALLOCATE,
WAIT_EVENT_HASH_BUILD_ELECT,
WAIT_EVENT_HASH_BUILD_HASH_INNER,
WAIT_EVENT_HASH_BUILD_HASH_OUTER,
WAIT_EVENT_HASH_GROW_BATCHES_ALLOCATE,
WAIT_EVENT_HASH_GROW_BATCHES_DECIDE,
WAIT_EVENT_HASH_GROW_BATCHES_ELECT,
WAIT_EVENT_HASH_GROW_BATCHES_FINISH,
WAIT_EVENT_HASH_GROW_BATCHES_REPARTITION,
WAIT_EVENT_HASH_GROW_BUCKETS_ALLOCATE,
WAIT_EVENT_HASH_GROW_BUCKETS_ELECT,
WAIT_EVENT_HASH_GROW_BUCKETS_REINSERT,
WAIT_EVENT_LOGICAL_SYNC_DATA,
WAIT_EVENT_LOGICAL_SYNC_STATE_CHANGE,
WAIT_EVENT_MQ_INTERNAL,
WAIT_EVENT_MQ_PUT_MESSAGE,
WAIT_EVENT_MQ_RECEIVE,
WAIT_EVENT_MQ_SEND,
WAIT_EVENT_PARALLEL_BITMAP_SCAN,
WAIT_EVENT_PARALLEL_CREATE_INDEX_SCAN,
WAIT_EVENT_PARALLEL_FINISH,
WAIT_EVENT_PROCARRAY_GROUP_UPDATE,
WAIT_EVENT_PROC_SIGNAL_BARRIER,
WAIT_EVENT_PROMOTE,
WAIT_EVENT_RECOVERY_CONFLICT_SNAPSHOT,
WAIT_EVENT_RECOVERY_CONFLICT_TABLESPACE,
WAIT_EVENT_RECOVERY_PAUSE,
WAIT_EVENT_REPLICATION_ORIGIN_DROP,
WAIT_EVENT_REPLICATION_SLOT_DROP,
WAIT_EVENT_SAFE_SNAPSHOT,
WAIT_EVENT_SYNC_REP,
WAIT_EVENT_WAL_RECEIVER_EXIT,
WAIT_EVENT_WAL_RECEIVER_WAIT_START,
WAIT_EVENT_XACT_GROUP_UPDATE
} WaitEventIPC;
/* ----------
* Wait Events - Timeout
*
* Use this category when a process is waiting for a timeout to expire.
* ----------
*/
typedef enum
{
WAIT_EVENT_BASE_BACKUP_THROTTLE = PG_WAIT_TIMEOUT,
WAIT_EVENT_PG_SLEEP,
WAIT_EVENT_RECOVERY_APPLY_DELAY,
WAIT_EVENT_RECOVERY_RETRIEVE_RETRY_INTERVAL,
WAIT_EVENT_VACUUM_DELAY
} WaitEventTimeout;
/* ----------
* Wait Events - IO
*
* Use this category when a process is waiting for a IO.
* ----------
*/
typedef enum
{
WAIT_EVENT_BASEBACKUP_READ = PG_WAIT_IO,
WAIT_EVENT_BUFFILE_READ,
WAIT_EVENT_BUFFILE_WRITE,
WAIT_EVENT_BUFFILE_TRUNCATE,
WAIT_EVENT_CONTROL_FILE_READ,
WAIT_EVENT_CONTROL_FILE_SYNC,
WAIT_EVENT_CONTROL_FILE_SYNC_UPDATE,
WAIT_EVENT_CONTROL_FILE_WRITE,
WAIT_EVENT_CONTROL_FILE_WRITE_UPDATE,
WAIT_EVENT_COPY_FILE_READ,
WAIT_EVENT_COPY_FILE_WRITE,
WAIT_EVENT_DATA_FILE_EXTEND,
WAIT_EVENT_DATA_FILE_FLUSH,
WAIT_EVENT_DATA_FILE_IMMEDIATE_SYNC,
WAIT_EVENT_DATA_FILE_PREFETCH,
WAIT_EVENT_DATA_FILE_READ,
WAIT_EVENT_DATA_FILE_SYNC,
WAIT_EVENT_DATA_FILE_TRUNCATE,
WAIT_EVENT_DATA_FILE_WRITE,
WAIT_EVENT_DSM_FILL_ZERO_WRITE,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_READ,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_SYNC,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_WRITE,
WAIT_EVENT_LOCK_FILE_CREATE_READ,
WAIT_EVENT_LOCK_FILE_CREATE_SYNC,
WAIT_EVENT_LOCK_FILE_CREATE_WRITE,
WAIT_EVENT_LOCK_FILE_RECHECKDATADIR_READ,
WAIT_EVENT_LOGICAL_REWRITE_CHECKPOINT_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_MAPPING_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_MAPPING_WRITE,
WAIT_EVENT_LOGICAL_REWRITE_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_TRUNCATE,
WAIT_EVENT_LOGICAL_REWRITE_WRITE,
WAIT_EVENT_RELATION_MAP_READ,
WAIT_EVENT_RELATION_MAP_SYNC,
WAIT_EVENT_RELATION_MAP_WRITE,
WAIT_EVENT_REORDER_BUFFER_READ,
WAIT_EVENT_REORDER_BUFFER_WRITE,
WAIT_EVENT_REORDER_LOGICAL_MAPPING_READ,
WAIT_EVENT_REPLICATION_SLOT_READ,
WAIT_EVENT_REPLICATION_SLOT_RESTORE_SYNC,
WAIT_EVENT_REPLICATION_SLOT_SYNC,
WAIT_EVENT_REPLICATION_SLOT_WRITE,
WAIT_EVENT_SLRU_FLUSH_SYNC,
WAIT_EVENT_SLRU_READ,
WAIT_EVENT_SLRU_SYNC,
WAIT_EVENT_SLRU_WRITE,
WAIT_EVENT_SNAPBUILD_READ,
WAIT_EVENT_SNAPBUILD_SYNC,
WAIT_EVENT_SNAPBUILD_WRITE,
WAIT_EVENT_TIMELINE_HISTORY_FILE_SYNC,
WAIT_EVENT_TIMELINE_HISTORY_FILE_WRITE,
WAIT_EVENT_TIMELINE_HISTORY_READ,
WAIT_EVENT_TIMELINE_HISTORY_SYNC,
WAIT_EVENT_TIMELINE_HISTORY_WRITE,
WAIT_EVENT_TWOPHASE_FILE_READ,
WAIT_EVENT_TWOPHASE_FILE_SYNC,
WAIT_EVENT_TWOPHASE_FILE_WRITE,
WAIT_EVENT_WALSENDER_TIMELINE_HISTORY_READ,
WAIT_EVENT_WAL_BOOTSTRAP_SYNC,
WAIT_EVENT_WAL_BOOTSTRAP_WRITE,
WAIT_EVENT_WAL_COPY_READ,
WAIT_EVENT_WAL_COPY_SYNC,
WAIT_EVENT_WAL_COPY_WRITE,
WAIT_EVENT_WAL_INIT_SYNC,
WAIT_EVENT_WAL_INIT_WRITE,
WAIT_EVENT_WAL_READ,
WAIT_EVENT_WAL_SYNC,
WAIT_EVENT_WAL_SYNC_METHOD_ASSIGN,
WAIT_EVENT_WAL_WRITE,
WAIT_EVENT_LOGICAL_CHANGES_READ,
WAIT_EVENT_LOGICAL_CHANGES_WRITE,
WAIT_EVENT_LOGICAL_SUBXACT_READ,
WAIT_EVENT_LOGICAL_SUBXACT_WRITE
} WaitEventIO;
/* ----------
* Command type for progress reporting purposes
* ----------
......@@ -1463,8 +1247,6 @@ extern void pgstat_report_activity(BackendState state, const char *cmd_str);
extern void pgstat_report_tempfile(size_t filesize);
extern void pgstat_report_appname(const char *appname);
extern void pgstat_report_xact_timestamp(TimestampTz tstamp);
extern const char *pgstat_get_wait_event(uint32 wait_event_info);
extern const char *pgstat_get_wait_event_type(uint32 wait_event_info);
extern const char *pgstat_get_backend_current_activity(int pid, bool checkUser);
extern const char *pgstat_get_crashed_backend_activity(int pid, char *buffer,
int buflen);
......@@ -1483,60 +1265,6 @@ extern void pgstat_initstats(Relation rel);
extern char *pgstat_clip_activity(const char *raw_activity);
/* ----------
* pgstat_report_wait_start() -
*
* Called from places where server process needs to wait. This is called
* to report wait event information. The wait information is stored
* as 4-bytes where first byte represents the wait event class (type of
* wait, for different types of wait, refer WaitClass) and the next
* 3-bytes represent the actual wait event. Currently 2-bytes are used
* for wait event which is sufficient for current usage, 1-byte is
* reserved for future usage.
*
* NB: this *must* be able to survive being called before MyProc has been
* initialized.
* ----------
*/
static inline void
pgstat_report_wait_start(uint32 wait_event_info)
{
volatile PGPROC *proc = MyProc;
if (!pgstat_track_activities || !proc)
return;
/*
* Since this is a four-byte field which is always read and written as
* four-bytes, updates are atomic.
*/
proc->wait_event_info = wait_event_info;
}
/* ----------
* pgstat_report_wait_end() -
*
* Called to report end of a wait.
*
* NB: this *must* be able to survive being called before MyProc has been
* initialized.
* ----------
*/
static inline void
pgstat_report_wait_end(void)
{
volatile PGPROC *proc = MyProc;
if (!pgstat_track_activities || !proc)
return;
/*
* Since this is a four-byte field which is always read and written as
* four-bytes, updates are atomic.
*/
proc->wait_event_info = 0;
}
/* nontransactional event counts are simple enough to inline */
#define pgstat_count_heap_scan(rel) \
......
src/include/utils/wait_event.h 0 → 100644
View file @ a333476b
/*-------------------------------------------------------------------------
* wait_event.h
* Definitions related to wait event reporting
*
* Copyright (c) 2001-2021, PostgreSQL Global Development Group
*
* src/include/utils/wait_event.h
* ----------
*/
#ifndef WAIT_EVENT_H
#define WAIT_EVENT_H
#include "storage/proc.h" /* for MyProc */
/* ----------
* Wait Classes
* ----------
*/
#define PG_WAIT_LWLOCK 0x01000000U
#define PG_WAIT_LOCK 0x03000000U
#define PG_WAIT_BUFFER_PIN 0x04000000U
#define PG_WAIT_ACTIVITY 0x05000000U
#define PG_WAIT_CLIENT 0x06000000U
#define PG_WAIT_EXTENSION 0x07000000U
#define PG_WAIT_IPC 0x08000000U
#define PG_WAIT_TIMEOUT 0x09000000U
#define PG_WAIT_IO 0x0A000000U
/* ----------
* Wait Events - Activity
*
* Use this category when a process is waiting because it has no work to do,
* unless the "Client" or "Timeout" category describes the situation better.
* Typically, this should only be used for background processes.
* ----------
*/
typedef enum
{
WAIT_EVENT_ARCHIVER_MAIN = PG_WAIT_ACTIVITY,
WAIT_EVENT_AUTOVACUUM_MAIN,
WAIT_EVENT_BGWRITER_HIBERNATE,
WAIT_EVENT_BGWRITER_MAIN,
WAIT_EVENT_CHECKPOINTER_MAIN,
WAIT_EVENT_LOGICAL_APPLY_MAIN,
WAIT_EVENT_LOGICAL_LAUNCHER_MAIN,
WAIT_EVENT_PGSTAT_MAIN,
WAIT_EVENT_RECOVERY_WAL_STREAM,
WAIT_EVENT_SYSLOGGER_MAIN,
WAIT_EVENT_WAL_RECEIVER_MAIN,
WAIT_EVENT_WAL_SENDER_MAIN,
WAIT_EVENT_WAL_WRITER_MAIN
} WaitEventActivity;
/* ----------
* Wait Events - Client
*
* Use this category when a process is waiting to send data to or receive data
* from the frontend process to which it is connected. This is never used for
* a background process, which has no client connection.
* ----------
*/
typedef enum
{
WAIT_EVENT_CLIENT_READ = PG_WAIT_CLIENT,
WAIT_EVENT_CLIENT_WRITE,
WAIT_EVENT_GSS_OPEN_SERVER,
WAIT_EVENT_LIBPQWALRECEIVER_CONNECT,
WAIT_EVENT_LIBPQWALRECEIVER_RECEIVE,
WAIT_EVENT_SSL_OPEN_SERVER,
WAIT_EVENT_WAL_SENDER_WAIT_WAL,
WAIT_EVENT_WAL_SENDER_WRITE_DATA,
} WaitEventClient;
/* ----------
* Wait Events - IPC
*
* Use this category when a process cannot complete the work it is doing because
* it is waiting for a notification from another process.
* ----------
*/
typedef enum
{
WAIT_EVENT_APPEND_READY = PG_WAIT_IPC,
WAIT_EVENT_BACKUP_WAIT_WAL_ARCHIVE,
WAIT_EVENT_BGWORKER_SHUTDOWN,
WAIT_EVENT_BGWORKER_STARTUP,
WAIT_EVENT_BTREE_PAGE,
WAIT_EVENT_BUFFER_IO,
WAIT_EVENT_CHECKPOINT_DONE,
WAIT_EVENT_CHECKPOINT_START,
WAIT_EVENT_EXECUTE_GATHER,
WAIT_EVENT_HASH_BATCH_ALLOCATE,
WAIT_EVENT_HASH_BATCH_ELECT,
WAIT_EVENT_HASH_BATCH_LOAD,
WAIT_EVENT_HASH_BUILD_ALLOCATE,
WAIT_EVENT_HASH_BUILD_ELECT,
WAIT_EVENT_HASH_BUILD_HASH_INNER,
WAIT_EVENT_HASH_BUILD_HASH_OUTER,
WAIT_EVENT_HASH_GROW_BATCHES_ALLOCATE,
WAIT_EVENT_HASH_GROW_BATCHES_DECIDE,
WAIT_EVENT_HASH_GROW_BATCHES_ELECT,
WAIT_EVENT_HASH_GROW_BATCHES_FINISH,
WAIT_EVENT_HASH_GROW_BATCHES_REPARTITION,
WAIT_EVENT_HASH_GROW_BUCKETS_ALLOCATE,
WAIT_EVENT_HASH_GROW_BUCKETS_ELECT,
WAIT_EVENT_HASH_GROW_BUCKETS_REINSERT,
WAIT_EVENT_LOGICAL_SYNC_DATA,
WAIT_EVENT_LOGICAL_SYNC_STATE_CHANGE,
WAIT_EVENT_MQ_INTERNAL,
WAIT_EVENT_MQ_PUT_MESSAGE,
WAIT_EVENT_MQ_RECEIVE,
WAIT_EVENT_MQ_SEND,
WAIT_EVENT_PARALLEL_BITMAP_SCAN,
WAIT_EVENT_PARALLEL_CREATE_INDEX_SCAN,
WAIT_EVENT_PARALLEL_FINISH,
WAIT_EVENT_PROCARRAY_GROUP_UPDATE,
WAIT_EVENT_PROC_SIGNAL_BARRIER,
WAIT_EVENT_PROMOTE,
WAIT_EVENT_RECOVERY_CONFLICT_SNAPSHOT,
WAIT_EVENT_RECOVERY_CONFLICT_TABLESPACE,
WAIT_EVENT_RECOVERY_PAUSE,
WAIT_EVENT_REPLICATION_ORIGIN_DROP,
WAIT_EVENT_REPLICATION_SLOT_DROP,
WAIT_EVENT_SAFE_SNAPSHOT,
WAIT_EVENT_SYNC_REP,
WAIT_EVENT_WAL_RECEIVER_EXIT,
WAIT_EVENT_WAL_RECEIVER_WAIT_START,
WAIT_EVENT_XACT_GROUP_UPDATE
} WaitEventIPC;
/* ----------
* Wait Events - Timeout
*
* Use this category when a process is waiting for a timeout to expire.
* ----------
*/
typedef enum
{
WAIT_EVENT_BASE_BACKUP_THROTTLE = PG_WAIT_TIMEOUT,
WAIT_EVENT_PG_SLEEP,
WAIT_EVENT_RECOVERY_APPLY_DELAY,
WAIT_EVENT_RECOVERY_RETRIEVE_RETRY_INTERVAL,
WAIT_EVENT_VACUUM_DELAY
} WaitEventTimeout;
/* ----------
* Wait Events - IO
*
* Use this category when a process is waiting for a IO.
* ----------
*/
typedef enum
{
WAIT_EVENT_BASEBACKUP_READ = PG_WAIT_IO,
WAIT_EVENT_BUFFILE_READ,
WAIT_EVENT_BUFFILE_WRITE,
WAIT_EVENT_BUFFILE_TRUNCATE,
WAIT_EVENT_CONTROL_FILE_READ,
WAIT_EVENT_CONTROL_FILE_SYNC,
WAIT_EVENT_CONTROL_FILE_SYNC_UPDATE,
WAIT_EVENT_CONTROL_FILE_WRITE,
WAIT_EVENT_CONTROL_FILE_WRITE_UPDATE,
WAIT_EVENT_COPY_FILE_READ,
WAIT_EVENT_COPY_FILE_WRITE,
WAIT_EVENT_DATA_FILE_EXTEND,
WAIT_EVENT_DATA_FILE_FLUSH,
WAIT_EVENT_DATA_FILE_IMMEDIATE_SYNC,
WAIT_EVENT_DATA_FILE_PREFETCH,
WAIT_EVENT_DATA_FILE_READ,
WAIT_EVENT_DATA_FILE_SYNC,
WAIT_EVENT_DATA_FILE_TRUNCATE,
WAIT_EVENT_DATA_FILE_WRITE,
WAIT_EVENT_DSM_FILL_ZERO_WRITE,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_READ,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_SYNC,
WAIT_EVENT_LOCK_FILE_ADDTODATADIR_WRITE,
WAIT_EVENT_LOCK_FILE_CREATE_READ,
WAIT_EVENT_LOCK_FILE_CREATE_SYNC,
WAIT_EVENT_LOCK_FILE_CREATE_WRITE,
WAIT_EVENT_LOCK_FILE_RECHECKDATADIR_READ,
WAIT_EVENT_LOGICAL_REWRITE_CHECKPOINT_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_MAPPING_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_MAPPING_WRITE,
WAIT_EVENT_LOGICAL_REWRITE_SYNC,
WAIT_EVENT_LOGICAL_REWRITE_TRUNCATE,
WAIT_EVENT_LOGICAL_REWRITE_WRITE,
WAIT_EVENT_RELATION_MAP_READ,
WAIT_EVENT_RELATION_MAP_SYNC,
WAIT_EVENT_RELATION_MAP_WRITE,
WAIT_EVENT_REORDER_BUFFER_READ,
WAIT_EVENT_REORDER_BUFFER_WRITE,
WAIT_EVENT_REORDER_LOGICAL_MAPPING_READ,
WAIT_EVENT_REPLICATION_SLOT_READ,
WAIT_EVENT_REPLICATION_SLOT_RESTORE_SYNC,
WAIT_EVENT_REPLICATION_SLOT_SYNC,
WAIT_EVENT_REPLICATION_SLOT_WRITE,
WAIT_EVENT_SLRU_FLUSH_SYNC,
WAIT_EVENT_SLRU_READ,
WAIT_EVENT_SLRU_SYNC,
WAIT_EVENT_SLRU_WRITE,
WAIT_EVENT_SNAPBUILD_READ,
WAIT_EVENT_SNAPBUILD_SYNC,
WAIT_EVENT_SNAPBUILD_WRITE,
WAIT_EVENT_TIMELINE_HISTORY_FILE_SYNC,
WAIT_EVENT_TIMELINE_HISTORY_FILE_WRITE,
WAIT_EVENT_TIMELINE_HISTORY_READ,
WAIT_EVENT_TIMELINE_HISTORY_SYNC,
WAIT_EVENT_TIMELINE_HISTORY_WRITE,
WAIT_EVENT_TWOPHASE_FILE_READ,
WAIT_EVENT_TWOPHASE_FILE_SYNC,
WAIT_EVENT_TWOPHASE_FILE_WRITE,
WAIT_EVENT_WALSENDER_TIMELINE_HISTORY_READ,
WAIT_EVENT_WAL_BOOTSTRAP_SYNC,
WAIT_EVENT_WAL_BOOTSTRAP_WRITE,
WAIT_EVENT_WAL_COPY_READ,
WAIT_EVENT_WAL_COPY_SYNC,
WAIT_EVENT_WAL_COPY_WRITE,
WAIT_EVENT_WAL_INIT_SYNC,
WAIT_EVENT_WAL_INIT_WRITE,
WAIT_EVENT_WAL_READ,
WAIT_EVENT_WAL_SYNC,
WAIT_EVENT_WAL_SYNC_METHOD_ASSIGN,
WAIT_EVENT_WAL_WRITE,
WAIT_EVENT_LOGICAL_CHANGES_READ,
WAIT_EVENT_LOGICAL_CHANGES_WRITE,
WAIT_EVENT_LOGICAL_SUBXACT_READ,
WAIT_EVENT_LOGICAL_SUBXACT_WRITE
} WaitEventIO;
extern const char *pgstat_get_wait_event(uint32 wait_event_info);
extern const char *pgstat_get_wait_event_type(uint32 wait_event_info);
static inline void pgstat_report_wait_start(uint32 wait_event_info);
static inline void pgstat_report_wait_end(void);
/*
* Repeated here for the inline functions because it is declared in pgstat.h,
* which includes this header.
*/
extern PGDLLIMPORT bool pgstat_track_activities;
/* ----------
* pgstat_report_wait_start() -
*
* Called from places where server process needs to wait. This is called
* to report wait event information. The wait information is stored
* as 4-bytes where first byte represents the wait event class (type of
* wait, for different types of wait, refer WaitClass) and the next
* 3-bytes represent the actual wait event. Currently 2-bytes are used
* for wait event which is sufficient for current usage, 1-byte is
* reserved for future usage.
*
* NB: this *must* be able to survive being called before MyProc has been
* initialized.
* ----------
*/
static inline void
pgstat_report_wait_start(uint32 wait_event_info)
{
volatile PGPROC *proc = MyProc;
if (!pgstat_track_activities || !proc)
return;
/*
* Since this is a four-byte field which is always read and written as
* four-bytes, updates are atomic.
*/
proc->wait_event_info = wait_event_info;
}
/* ----------
* pgstat_report_wait_end() -
*
* Called to report end of a wait.
*
* NB: this *must* be able to survive being called before MyProc has been
* initialized.
* ----------
*/
static inline void
pgstat_report_wait_end(void)
{
volatile PGPROC *proc = MyProc;
if (!pgstat_track_activities || !proc)
return;
/*
* Since this is a four-byte field which is always read and written as
* four-bytes, updates are atomic.
*/
proc->wait_event_info = 0;
}
#endif /* WAIT_EVENT_H */
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