pgstat.h File Reference

#include "datatype/timestamp.h"
#include "fmgr.h"
#include "libpq/pqcomm.h"
#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 dependency graph for pgstat.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	PgStat_TableCounts
struct	PgStat_TableStatus
struct	PgStat_TableXactStatus
struct	PgStat_MsgHdr
struct	PgStat_MsgDummy
struct	PgStat_MsgInquiry
struct	PgStat_TableEntry
struct	PgStat_MsgTabstat
struct	PgStat_MsgTabpurge
struct	PgStat_MsgDropdb
struct	PgStat_MsgResetcounter
struct	PgStat_MsgResetsharedcounter
struct	PgStat_MsgResetsinglecounter
struct	PgStat_MsgAutovacStart
struct	PgStat_MsgVacuum
struct	PgStat_MsgAnalyze
struct	PgStat_MsgArchiver
struct	PgStat_MsgBgWriter
struct	PgStat_MsgRecoveryConflict
struct	PgStat_MsgTempFile
struct	PgStat_FunctionCounts
struct	PgStat_BackendFunctionEntry
struct	PgStat_FunctionEntry
struct	PgStat_MsgFuncstat
struct	PgStat_MsgFuncpurge
struct	PgStat_MsgDeadlock
union	PgStat_Msg
struct	PgStat_StatDBEntry
struct	PgStat_StatTabEntry
struct	PgStat_StatFuncEntry
struct	PgStat_ArchiverStats
struct	PgStat_GlobalStats
struct	PgBackendSSLStatus
struct	PgBackendStatus
struct	LocalPgBackendStatus
struct	PgStat_FunctionCallUsage

Macros
#define	PGSTAT_STAT_PERMANENT_DIRECTORY   "pg_stat"
#define	PGSTAT_STAT_PERMANENT_FILENAME   "pg_stat/global.stat"
#define	PGSTAT_STAT_PERMANENT_TMPFILE   "pg_stat/global.tmp"
#define	PG_STAT_TMP_DIR   "pg_stat_tmp"
#define	PGSTAT_MAX_MSG_SIZE   1000
#define	PGSTAT_MSG_PAYLOAD   (PGSTAT_MAX_MSG_SIZE - sizeof(PgStat_MsgHdr))
#define	PGSTAT_NUM_TABENTRIES
#define	PGSTAT_NUM_TABPURGE
#define	PGSTAT_NUM_FUNCENTRIES
#define	PGSTAT_NUM_FUNCPURGE
#define	PGSTAT_FILE_FORMAT_ID   0x01A5BC9D
#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
#define	PGSTAT_NUM_PROGRESS_PARAM   10
#define	pgstat_increment_changecount_before(beentry)
#define	pgstat_increment_changecount_after(beentry)
#define	pgstat_save_changecount_before(beentry, save_changecount)
#define	pgstat_save_changecount_after(beentry, save_changecount)
#define	pgstat_count_heap_scan(rel)
#define	pgstat_count_heap_getnext(rel)
#define	pgstat_count_heap_fetch(rel)
#define	pgstat_count_index_scan(rel)
#define	pgstat_count_index_tuples(rel, n)
#define	pgstat_count_buffer_read(rel)
#define	pgstat_count_buffer_hit(rel)
#define	pgstat_count_buffer_read_time(n)   (pgStatBlockReadTime += (n))
#define	pgstat_count_buffer_write_time(n)   (pgStatBlockWriteTime += (n))

Typedefs
typedef enum TrackFunctionsLevel	TrackFunctionsLevel
typedef enum StatMsgType	StatMsgType
typedef int64	PgStat_Counter
typedef struct PgStat_TableCounts	PgStat_TableCounts
typedef enum PgStat_Shared_Reset_Target	PgStat_Shared_Reset_Target
typedef enum PgStat_Single_Reset_Type	PgStat_Single_Reset_Type
typedef struct PgStat_TableStatus	PgStat_TableStatus
typedef struct PgStat_TableXactStatus	PgStat_TableXactStatus
typedef struct PgStat_MsgHdr	PgStat_MsgHdr
typedef struct PgStat_MsgDummy	PgStat_MsgDummy
typedef struct PgStat_MsgInquiry	PgStat_MsgInquiry
typedef struct PgStat_TableEntry	PgStat_TableEntry
typedef struct PgStat_MsgTabstat	PgStat_MsgTabstat
typedef struct PgStat_MsgTabpurge	PgStat_MsgTabpurge
typedef struct PgStat_MsgDropdb	PgStat_MsgDropdb
typedef struct PgStat_MsgResetcounter	PgStat_MsgResetcounter
typedef struct PgStat_MsgResetsharedcounter	PgStat_MsgResetsharedcounter
typedef struct PgStat_MsgResetsinglecounter	PgStat_MsgResetsinglecounter
typedef struct PgStat_MsgAutovacStart	PgStat_MsgAutovacStart
typedef struct PgStat_MsgVacuum	PgStat_MsgVacuum
typedef struct PgStat_MsgAnalyze	PgStat_MsgAnalyze
typedef struct PgStat_MsgArchiver	PgStat_MsgArchiver
typedef struct PgStat_MsgBgWriter	PgStat_MsgBgWriter
typedef struct PgStat_MsgRecoveryConflict	PgStat_MsgRecoveryConflict
typedef struct PgStat_MsgTempFile	PgStat_MsgTempFile
typedef struct PgStat_FunctionCounts	PgStat_FunctionCounts
typedef struct PgStat_BackendFunctionEntry	PgStat_BackendFunctionEntry
typedef struct PgStat_FunctionEntry	PgStat_FunctionEntry
typedef struct PgStat_MsgFuncstat	PgStat_MsgFuncstat
typedef struct PgStat_MsgFuncpurge	PgStat_MsgFuncpurge
typedef struct PgStat_MsgDeadlock	PgStat_MsgDeadlock
typedef union PgStat_Msg	PgStat_Msg
typedef struct PgStat_StatDBEntry	PgStat_StatDBEntry
typedef struct PgStat_StatTabEntry	PgStat_StatTabEntry
typedef struct PgStat_StatFuncEntry	PgStat_StatFuncEntry
typedef struct PgStat_ArchiverStats	PgStat_ArchiverStats
typedef struct PgStat_GlobalStats	PgStat_GlobalStats
typedef enum BackendType	BackendType
typedef enum BackendState	BackendState
typedef enum ProgressCommandType	ProgressCommandType
typedef struct PgBackendSSLStatus	PgBackendSSLStatus
typedef struct PgBackendStatus	PgBackendStatus
typedef struct LocalPgBackendStatus	LocalPgBackendStatus
typedef struct PgStat_FunctionCallUsage	PgStat_FunctionCallUsage

Enumerations
enum	TrackFunctionsLevel { TRACK_FUNC_OFF, TRACK_FUNC_PL, TRACK_FUNC_ALL }
enum	StatMsgType {   PGSTAT_MTYPE_DUMMY, PGSTAT_MTYPE_INQUIRY, PGSTAT_MTYPE_TABSTAT, PGSTAT_MTYPE_TABPURGE,   PGSTAT_MTYPE_DROPDB, PGSTAT_MTYPE_RESETCOUNTER, PGSTAT_MTYPE_RESETSHAREDCOUNTER, PGSTAT_MTYPE_RESETSINGLECOUNTER,   PGSTAT_MTYPE_AUTOVAC_START, PGSTAT_MTYPE_VACUUM, PGSTAT_MTYPE_ANALYZE, PGSTAT_MTYPE_ARCHIVER,   PGSTAT_MTYPE_BGWRITER, PGSTAT_MTYPE_FUNCSTAT, PGSTAT_MTYPE_FUNCPURGE, PGSTAT_MTYPE_RECOVERYCONFLICT,   PGSTAT_MTYPE_TEMPFILE, PGSTAT_MTYPE_DEADLOCK }
enum	PgStat_Shared_Reset_Target { RESET_ARCHIVER, RESET_BGWRITER }
enum	PgStat_Single_Reset_Type { RESET_TABLE, RESET_FUNCTION }
enum	BackendType {   B_AUTOVAC_LAUNCHER, B_AUTOVAC_WORKER, B_BACKEND, B_BG_WORKER,   B_BG_WRITER, B_CHECKPOINTER, B_STARTUP, B_WAL_RECEIVER,   B_WAL_SENDER, B_WAL_WRITER }
enum	BackendState {   STATE_UNDEFINED, STATE_IDLE, STATE_RUNNING, STATE_IDLEINTRANSACTION,   STATE_FASTPATH, STATE_IDLEINTRANSACTION_ABORTED, STATE_DISABLED }
enum	WaitEventActivity {   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_LAUNCHER_MAIN, WAIT_EVENT_LOGICAL_APPLY_MAIN, WAIT_EVENT_PGSTAT_MAIN,   WAIT_EVENT_RECOVERY_WAL_ALL, WAIT_EVENT_RECOVERY_WAL_STREAM, WAIT_EVENT_SYSLOGGER_MAIN, WAIT_EVENT_WAL_RECEIVER_MAIN,   WAIT_EVENT_WAL_SENDER_MAIN, WAIT_EVENT_WAL_WRITER_MAIN }
enum	WaitEventClient {   WAIT_EVENT_CLIENT_READ = PG_WAIT_CLIENT, WAIT_EVENT_CLIENT_WRITE, WAIT_EVENT_LIBPQWALRECEIVER_CONNECT, WAIT_EVENT_LIBPQWALRECEIVER_RECEIVE,   WAIT_EVENT_SSL_OPEN_SERVER, WAIT_EVENT_WAL_RECEIVER_WAIT_START, WAIT_EVENT_WAL_SENDER_WAIT_WAL, WAIT_EVENT_WAL_SENDER_WRITE_DATA }
enum	WaitEventIPC {   WAIT_EVENT_BGWORKER_SHUTDOWN = PG_WAIT_IPC, WAIT_EVENT_BGWORKER_STARTUP, WAIT_EVENT_BTREE_PAGE, WAIT_EVENT_EXECUTE_GATHER,   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_FINISH, WAIT_EVENT_PARALLEL_BITMAP_SCAN,   WAIT_EVENT_PROCARRAY_GROUP_UPDATE, WAIT_EVENT_REPLICATION_ORIGIN_DROP, WAIT_EVENT_REPLICATION_SLOT_DROP, WAIT_EVENT_SAFE_SNAPSHOT,   WAIT_EVENT_SYNC_REP }
enum	WaitEventTimeout { WAIT_EVENT_BASE_BACKUP_THROTTLE = PG_WAIT_TIMEOUT, WAIT_EVENT_PG_SLEEP, WAIT_EVENT_RECOVERY_APPLY_DELAY }
enum	WaitEventIO {   WAIT_EVENT_BUFFILE_READ = PG_WAIT_IO, WAIT_EVENT_BUFFILE_WRITE, 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_METHOD_ASSIGN, WAIT_EVENT_WAL_WRITE }
enum	ProgressCommandType { PROGRESS_COMMAND_INVALID, PROGRESS_COMMAND_VACUUM }

Functions
Size	BackendStatusShmemSize (void)
void	CreateSharedBackendStatus (void)
void	pgstat_init (void)
int	pgstat_start (void)
void	pgstat_reset_all (void)
void	allow_immediate_pgstat_restart (void)
void	pgstat_ping (void)
void	pgstat_report_stat (bool force)
void	pgstat_vacuum_stat (void)
void	pgstat_drop_database (Oid databaseid)
void	pgstat_clear_snapshot (void)
void	pgstat_reset_counters (void)
void	pgstat_reset_shared_counters (const char *)
void	pgstat_reset_single_counter (Oid objectid, PgStat_Single_Reset_Type type)
void	pgstat_report_autovac (Oid dboid)
void	pgstat_report_vacuum (Oid tableoid, bool shared, PgStat_Counter livetuples, PgStat_Counter deadtuples)
void	pgstat_report_analyze (Relation rel, PgStat_Counter livetuples, PgStat_Counter deadtuples, bool resetcounter)
void	pgstat_report_recovery_conflict (int reason)
void	pgstat_report_deadlock (void)
void	pgstat_initialize (void)
void	pgstat_bestart (void)
void	pgstat_report_activity (BackendState state, const char *cmd_str)
void	pgstat_report_tempfile (size_t filesize)
void	pgstat_report_appname (const char *appname)
void	pgstat_report_xact_timestamp (TimestampTz tstamp)
const char *	pgstat_get_wait_event (uint32 wait_event_info)
const char *	pgstat_get_wait_event_type (uint32 wait_event_info)
const char *	pgstat_get_backend_current_activity (int pid, bool checkUser)
const char *	pgstat_get_crashed_backend_activity (int pid, char *buffer, int buflen)
const char *	pgstat_get_backend_desc (BackendType backendType)
void	pgstat_progress_start_command (ProgressCommandType cmdtype, Oid relid)
void	pgstat_progress_update_param (int index, int64 val)
void	pgstat_progress_update_multi_param (int nparam, const int *index, const int64 *val)
void	pgstat_progress_end_command (void)
PgStat_TableStatus *	find_tabstat_entry (Oid rel_id)
PgStat_BackendFunctionEntry *	find_funcstat_entry (Oid func_id)
void	pgstat_initstats (Relation rel)
static void	pgstat_report_wait_start (uint32 wait_event_info)
static void	pgstat_report_wait_end (void)
void	pgstat_count_heap_insert (Relation rel, PgStat_Counter n)
void	pgstat_count_heap_update (Relation rel, bool hot)
void	pgstat_count_heap_delete (Relation rel)
void	pgstat_count_truncate (Relation rel)
void	pgstat_update_heap_dead_tuples (Relation rel, int delta)
void	pgstat_init_function_usage (FunctionCallInfoData *fcinfo, PgStat_FunctionCallUsage *fcu)
void	pgstat_end_function_usage (PgStat_FunctionCallUsage *fcu, bool finalize)
void	AtEOXact_PgStat (bool isCommit)
void	AtEOSubXact_PgStat (bool isCommit, int nestDepth)
void	AtPrepare_PgStat (void)
void	PostPrepare_PgStat (void)
void	pgstat_twophase_postcommit (TransactionId xid, uint16 info, void *recdata, uint32 len)
void	pgstat_twophase_postabort (TransactionId xid, uint16 info, void *recdata, uint32 len)
void	pgstat_send_archiver (const char *xlog, bool failed)
void	pgstat_send_bgwriter (void)
PgStat_StatDBEntry *	pgstat_fetch_stat_dbentry (Oid dbid)
PgStat_StatTabEntry *	pgstat_fetch_stat_tabentry (Oid relid)
PgBackendStatus *	pgstat_fetch_stat_beentry (int beid)
LocalPgBackendStatus *	pgstat_fetch_stat_local_beentry (int beid)
PgStat_StatFuncEntry *	pgstat_fetch_stat_funcentry (Oid funcid)
int	pgstat_fetch_stat_numbackends (void)
PgStat_ArchiverStats *	pgstat_fetch_stat_archiver (void)
PgStat_GlobalStats *	pgstat_fetch_global (void)

Variables
bool	pgstat_track_activities
bool	pgstat_track_counts
int	pgstat_track_functions
PGDLLIMPORT int	pgstat_track_activity_query_size
char *	pgstat_stat_directory
char *	pgstat_stat_tmpname
char *	pgstat_stat_filename
PgStat_MsgBgWriter	BgWriterStats
PgStat_Counter	pgStatBlockReadTime
PgStat_Counter	pgStatBlockWriteTime

Macro Definition Documentation

#define PG_STAT_TMP_DIR   "pg_stat_tmp"

Definition at line 34 of file pgstat.h.

#define PG_WAIT_ACTIVITY   0x05000000U

Definition at line 740 of file pgstat.h.

Referenced by pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define PG_WAIT_BUFFER_PIN   0x04000000U

Definition at line 739 of file pgstat.h.

Referenced by LockBufferForCleanup(), pgstat_get_wait_event(), pgstat_get_wait_event_type(), and ResolveRecoveryConflictWithBufferPin().

#define PG_WAIT_CLIENT   0x06000000U

Definition at line 741 of file pgstat.h.

Referenced by pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define PG_WAIT_EXTENSION   0x07000000U

Definition at line 742 of file pgstat.h.

Referenced by pgfdw_get_cleanup_result(), pgfdw_get_result(), pgstat_get_wait_event(), pgstat_get_wait_event_type(), test_shm_mq_pipelined(), and wait_for_workers_to_become_ready().

#define PG_WAIT_IO   0x0A000000U

Definition at line 745 of file pgstat.h.

Referenced by pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define PG_WAIT_IPC   0x08000000U

Definition at line 743 of file pgstat.h.

Referenced by pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define PG_WAIT_LOCK   0x03000000U

Definition at line 738 of file pgstat.h.

Referenced by pgstat_get_wait_event(), pgstat_get_wait_event_type(), ProcSleep(), and ResolveRecoveryConflictWithLock().

#define PG_WAIT_LWLOCK   0x01000000U

Definition at line 737 of file pgstat.h.

Referenced by GetLWLockIdentifier(), LWLockReportWaitStart(), pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define PG_WAIT_TIMEOUT   0x09000000U

Definition at line 744 of file pgstat.h.

Referenced by pgstat_get_wait_event(), and pgstat_get_wait_event_type().

#define pgstat_count_buffer_hit

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_blocks_hit++;            \
    } while (0)

Definition at line 1281 of file pgstat.h.

Referenced by ReadBufferExtended().

#define pgstat_count_buffer_read

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_blocks_fetched++;        \
    } while (0)

Definition at line 1276 of file pgstat.h.

Referenced by ReadBufferExtended().

#define pgstat_count_buffer_read_time

(

n

)

(pgStatBlockReadTime += (n))

Definition at line 1286 of file pgstat.h.

Referenced by ReadBuffer_common().

#define pgstat_count_buffer_write_time

(

n

)

(pgStatBlockWriteTime += (n))

Definition at line 1288 of file pgstat.h.

Referenced by FlushBuffer().

#define pgstat_count_heap_fetch

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_tuples_fetched++;        \
    } while (0)

Definition at line 1261 of file pgstat.h.

Referenced by BitmapHeapNext(), heap_fetch(), and index_fetch_heap().

#define pgstat_count_heap_getnext

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_tuples_returned++;       \
    } while (0)

Definition at line 1256 of file pgstat.h.

Referenced by heap_getnext(), and tablesample_getnext().

#define pgstat_count_heap_scan

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_numscans++;              \
    } while (0)

Definition at line 1251 of file pgstat.h.

Referenced by initscan().

#define pgstat_count_index_scan

(

rel

)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_numscans++;              \
    } while (0)

Definition at line 1266 of file pgstat.h.

Referenced by _bt_first(), _hash_first(), bringetbitmap(), ginNewScanKey(), gistgetbitmap(), and gistgettuple().

#define pgstat_count_index_tuples	(		rel,
			n
	)

Value:

do {                                                            \
        if ((rel)->pgstat_info != NULL)                             \
            (rel)->pgstat_info->t_counts.t_tuples_returned += (n);  \
    } while (0)

Definition at line 1271 of file pgstat.h.

Referenced by index_getbitmap(), and index_getnext_tid().

#define PGSTAT_FILE_FORMAT_ID   0x01A5BC9D

Definition at line 569 of file pgstat.h.

Referenced by pgstat_read_db_statsfile(), pgstat_read_db_statsfile_timestamp(), pgstat_read_statsfiles(), pgstat_write_db_statsfile(), and pgstat_write_statsfiles().

#define pgstat_increment_changecount_after

(

beentry

)

Value:

do {    \
		pg_write_barrier(); \
        beentry->st_changecount++;  \
		Assert((beentry->st_changecount & 1) == 0); \
    } while (0)

Definition at line 1040 of file pgstat.h.

Referenced by pgstat_beshutdown_hook(), pgstat_bestart(), pgstat_progress_end_command(), pgstat_progress_start_command(), pgstat_progress_update_multi_param(), pgstat_progress_update_param(), pgstat_report_activity(), pgstat_report_appname(), and pgstat_report_xact_timestamp().

#define pgstat_increment_changecount_before

(

beentry

)

Value:

do {    \
        beentry->st_changecount++;  \
		pg_write_barrier(); \
    } while (0)

Definition at line 1034 of file pgstat.h.

Referenced by pgstat_beshutdown_hook(), pgstat_bestart(), pgstat_progress_end_command(), pgstat_progress_start_command(), pgstat_progress_update_multi_param(), pgstat_progress_update_param(), pgstat_report_activity(), pgstat_report_appname(), and pgstat_report_xact_timestamp().

#define PGSTAT_MAX_MSG_SIZE   1000

Definition at line 206 of file pgstat.h.

Referenced by pgstat_init().

#define PGSTAT_MSG_PAYLOAD   (PGSTAT_MAX_MSG_SIZE - sizeof(PgStat_MsgHdr))

Definition at line 207 of file pgstat.h.

#define PGSTAT_NUM_FUNCENTRIES

Value:

((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int))  \
     / sizeof(PgStat_FunctionEntry))

Definition at line 493 of file pgstat.h.

Referenced by pgstat_send_funcstats().

#define PGSTAT_NUM_FUNCPURGE

Value:

((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int))  \
     / sizeof(Oid))

Definition at line 510 of file pgstat.h.

Referenced by pgstat_vacuum_stat().

#define PGSTAT_NUM_PROGRESS_PARAM   10

Definition at line 921 of file pgstat.h.

Referenced by pg_stat_get_progress_info(), pgstat_progress_update_multi_param(), and pgstat_progress_update_param().

#define PGSTAT_NUM_TABENTRIES

Value:

((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - 3 * sizeof(int) - 2 * sizeof(PgStat_Counter))  \
     / sizeof(PgStat_TableEntry))

Definition at line 263 of file pgstat.h.

Referenced by pgstat_report_stat().

#define PGSTAT_NUM_TABPURGE

Value:

((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int))  \
     / sizeof(Oid))

Definition at line 285 of file pgstat.h.

Referenced by pgstat_vacuum_stat().

#define pgstat_save_changecount_after	(		beentry,
			save_changecount
	)

Value:

do {    \
		pg_read_barrier();    \
        save_changecount = beentry->st_changecount; \
    } while (0)

Definition at line 1053 of file pgstat.h.

Referenced by pgstat_get_backend_current_activity(), and pgstat_read_current_status().

#define pgstat_save_changecount_before	(		beentry,
			save_changecount
	)

Value:

do {    \
        save_changecount = beentry->st_changecount; \
		pg_read_barrier();    \
    } while (0)

Definition at line 1047 of file pgstat.h.

Referenced by pgstat_get_backend_current_activity(), and pgstat_read_current_status().

#define PGSTAT_STAT_PERMANENT_DIRECTORY   "pg_stat"

Definition at line 29 of file pgstat.h.

Referenced by get_dbstat_filename(), and pgstat_reset_all().

#define PGSTAT_STAT_PERMANENT_FILENAME   "pg_stat/global.stat"

Definition at line 30 of file pgstat.h.

Referenced by pgstat_read_db_statsfile_timestamp(), pgstat_read_statsfiles(), and pgstat_write_statsfiles().

#define PGSTAT_STAT_PERMANENT_TMPFILE   "pg_stat/global.tmp"

Definition at line 31 of file pgstat.h.

Referenced by pgstat_write_statsfiles().

Typedef Documentation

typedef enum BackendState BackendState

typedef enum BackendType BackendType

typedef struct LocalPgBackendStatus LocalPgBackendStatus

typedef struct PgBackendSSLStatus PgBackendSSLStatus

typedef struct PgBackendStatus PgBackendStatus

typedef struct PgStat_ArchiverStats PgStat_ArchiverStats

typedef struct PgStat_BackendFunctionEntry PgStat_BackendFunctionEntry

typedef int64 PgStat_Counter

Definition at line 74 of file pgstat.h.

typedef struct PgStat_FunctionCallUsage PgStat_FunctionCallUsage

typedef struct PgStat_FunctionCounts PgStat_FunctionCounts

typedef struct PgStat_FunctionEntry PgStat_FunctionEntry

typedef struct PgStat_GlobalStats PgStat_GlobalStats

typedef union PgStat_Msg PgStat_Msg

typedef struct PgStat_MsgAnalyze PgStat_MsgAnalyze

typedef struct PgStat_MsgArchiver PgStat_MsgArchiver

typedef struct PgStat_MsgAutovacStart PgStat_MsgAutovacStart

typedef struct PgStat_MsgBgWriter PgStat_MsgBgWriter

typedef struct PgStat_MsgDeadlock PgStat_MsgDeadlock

typedef struct PgStat_MsgDropdb PgStat_MsgDropdb

typedef struct PgStat_MsgDummy PgStat_MsgDummy

typedef struct PgStat_MsgFuncpurge PgStat_MsgFuncpurge

typedef struct PgStat_MsgFuncstat PgStat_MsgFuncstat

typedef struct PgStat_MsgHdr PgStat_MsgHdr

typedef struct PgStat_MsgInquiry PgStat_MsgInquiry

typedef struct PgStat_MsgRecoveryConflict PgStat_MsgRecoveryConflict

typedef struct PgStat_MsgResetcounter PgStat_MsgResetcounter

typedef struct PgStat_MsgResetsharedcounter PgStat_MsgResetsharedcounter

typedef struct PgStat_MsgResetsinglecounter PgStat_MsgResetsinglecounter

typedef struct PgStat_MsgTabpurge PgStat_MsgTabpurge

typedef struct PgStat_MsgTabstat PgStat_MsgTabstat

typedef struct PgStat_MsgTempFile PgStat_MsgTempFile

typedef struct PgStat_MsgVacuum PgStat_MsgVacuum

typedef enum PgStat_Shared_Reset_Target PgStat_Shared_Reset_Target

typedef enum PgStat_Single_Reset_Type PgStat_Single_Reset_Type

typedef struct PgStat_StatDBEntry PgStat_StatDBEntry

typedef struct PgStat_StatFuncEntry PgStat_StatFuncEntry

typedef struct PgStat_StatTabEntry PgStat_StatTabEntry

typedef struct PgStat_TableCounts PgStat_TableCounts

typedef struct PgStat_TableEntry PgStat_TableEntry

typedef struct PgStat_TableStatus PgStat_TableStatus

typedef struct PgStat_TableXactStatus PgStat_TableXactStatus

typedef enum ProgressCommandType ProgressCommandType

typedef enum StatMsgType StatMsgType

typedef enum TrackFunctionsLevel TrackFunctionsLevel

Enumeration Type Documentation

enum BackendState

Enumerator
STATE_UNDEFINED
STATE_IDLE
STATE_RUNNING
STATE_IDLEINTRANSACTION
STATE_FASTPATH
STATE_IDLEINTRANSACTION_ABORTED
STATE_DISABLED

Definition at line 721 of file pgstat.h.

{
    STATE_UNDEFINED,
    STATE_IDLE,
    STATE_RUNNING,
    STATE_IDLEINTRANSACTION,
    STATE_FASTPATH,
    STATE_IDLEINTRANSACTION_ABORTED,
    STATE_DISABLED
} BackendState;

enum BackendType

Enumerator
B_AUTOVAC_LAUNCHER
B_AUTOVAC_WORKER
B_BACKEND
B_BG_WORKER
B_BG_WRITER
B_CHECKPOINTER
B_STARTUP
B_WAL_RECEIVER
B_WAL_SENDER
B_WAL_WRITER

Definition at line 702 of file pgstat.h.

{
    B_AUTOVAC_LAUNCHER,
    B_AUTOVAC_WORKER,
    B_BACKEND,
    B_BG_WORKER,
    B_BG_WRITER,
    B_CHECKPOINTER,
    B_STARTUP,
    B_WAL_RECEIVER,
    B_WAL_SENDER,
    B_WAL_WRITER
} BackendType;

enum PgStat_Shared_Reset_Target

Enumerator
RESET_ARCHIVER
RESET_BGWRITER

Definition at line 119 of file pgstat.h.

{
    RESET_ARCHIVER,
    RESET_BGWRITER
} PgStat_Shared_Reset_Target;

enum PgStat_Single_Reset_Type

Enumerator
RESET_TABLE
RESET_FUNCTION

Definition at line 126 of file pgstat.h.

{
    RESET_TABLE,
    RESET_FUNCTION
} PgStat_Single_Reset_Type;

enum ProgressCommandType

Enumerator
PROGRESS_COMMAND_INVALID
PROGRESS_COMMAND_VACUUM

Definition at line 915 of file pgstat.h.

{
    PROGRESS_COMMAND_INVALID,
    PROGRESS_COMMAND_VACUUM
} ProgressCommandType;

enum StatMsgType

Enumerator
PGSTAT_MTYPE_DUMMY
PGSTAT_MTYPE_INQUIRY
PGSTAT_MTYPE_TABSTAT
PGSTAT_MTYPE_TABPURGE
PGSTAT_MTYPE_DROPDB
PGSTAT_MTYPE_RESETCOUNTER
PGSTAT_MTYPE_RESETSHAREDCOUNTER
PGSTAT_MTYPE_RESETSINGLECOUNTER
PGSTAT_MTYPE_AUTOVAC_START
PGSTAT_MTYPE_VACUUM
PGSTAT_MTYPE_ANALYZE
PGSTAT_MTYPE_ARCHIVER
PGSTAT_MTYPE_BGWRITER
PGSTAT_MTYPE_FUNCSTAT
PGSTAT_MTYPE_FUNCPURGE
PGSTAT_MTYPE_RECOVERYCONFLICT
PGSTAT_MTYPE_TEMPFILE
PGSTAT_MTYPE_DEADLOCK

Definition at line 48 of file pgstat.h.

{
    PGSTAT_MTYPE_DUMMY,
    PGSTAT_MTYPE_INQUIRY,
    PGSTAT_MTYPE_TABSTAT,
    PGSTAT_MTYPE_TABPURGE,
    PGSTAT_MTYPE_DROPDB,
    PGSTAT_MTYPE_RESETCOUNTER,
    PGSTAT_MTYPE_RESETSHAREDCOUNTER,
    PGSTAT_MTYPE_RESETSINGLECOUNTER,
    PGSTAT_MTYPE_AUTOVAC_START,
    PGSTAT_MTYPE_VACUUM,
    PGSTAT_MTYPE_ANALYZE,
    PGSTAT_MTYPE_ARCHIVER,
    PGSTAT_MTYPE_BGWRITER,
    PGSTAT_MTYPE_FUNCSTAT,
    PGSTAT_MTYPE_FUNCPURGE,
    PGSTAT_MTYPE_RECOVERYCONFLICT,
    PGSTAT_MTYPE_TEMPFILE,
    PGSTAT_MTYPE_DEADLOCK
} StatMsgType;

enum TrackFunctionsLevel

Enumerator
TRACK_FUNC_OFF
TRACK_FUNC_PL
TRACK_FUNC_ALL

Definition at line 37 of file pgstat.h.

{
    TRACK_FUNC_OFF,
    TRACK_FUNC_PL,
    TRACK_FUNC_ALL
}           TrackFunctionsLevel;

enum WaitEventActivity

Enumerator
WAIT_EVENT_ARCHIVER_MAIN
WAIT_EVENT_AUTOVACUUM_MAIN
WAIT_EVENT_BGWRITER_HIBERNATE
WAIT_EVENT_BGWRITER_MAIN
WAIT_EVENT_CHECKPOINTER_MAIN
WAIT_EVENT_LOGICAL_LAUNCHER_MAIN
WAIT_EVENT_LOGICAL_APPLY_MAIN
WAIT_EVENT_PGSTAT_MAIN
WAIT_EVENT_RECOVERY_WAL_ALL
WAIT_EVENT_RECOVERY_WAL_STREAM
WAIT_EVENT_SYSLOGGER_MAIN
WAIT_EVENT_WAL_RECEIVER_MAIN
WAIT_EVENT_WAL_SENDER_MAIN
WAIT_EVENT_WAL_WRITER_MAIN

Definition at line 755 of file pgstat.h.

{
    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_LAUNCHER_MAIN,
    WAIT_EVENT_LOGICAL_APPLY_MAIN,
    WAIT_EVENT_PGSTAT_MAIN,
    WAIT_EVENT_RECOVERY_WAL_ALL,
    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;

enum WaitEventClient

Enumerator
WAIT_EVENT_CLIENT_READ
WAIT_EVENT_CLIENT_WRITE
WAIT_EVENT_LIBPQWALRECEIVER_CONNECT
WAIT_EVENT_LIBPQWALRECEIVER_RECEIVE
WAIT_EVENT_SSL_OPEN_SERVER
WAIT_EVENT_WAL_RECEIVER_WAIT_START
WAIT_EVENT_WAL_SENDER_WAIT_WAL
WAIT_EVENT_WAL_SENDER_WRITE_DATA

Definition at line 781 of file pgstat.h.

{
    WAIT_EVENT_CLIENT_READ = PG_WAIT_CLIENT,
    WAIT_EVENT_CLIENT_WRITE,
    WAIT_EVENT_LIBPQWALRECEIVER_CONNECT,
    WAIT_EVENT_LIBPQWALRECEIVER_RECEIVE,
    WAIT_EVENT_SSL_OPEN_SERVER,
    WAIT_EVENT_WAL_RECEIVER_WAIT_START,
    WAIT_EVENT_WAL_SENDER_WAIT_WAL,
    WAIT_EVENT_WAL_SENDER_WRITE_DATA
} WaitEventClient;

enum WaitEventIO

Enumerator
WAIT_EVENT_BUFFILE_READ
WAIT_EVENT_BUFFILE_WRITE
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_METHOD_ASSIGN
WAIT_EVENT_WAL_WRITE

Definition at line 840 of file pgstat.h.

{
    WAIT_EVENT_BUFFILE_READ = PG_WAIT_IO,
    WAIT_EVENT_BUFFILE_WRITE,
    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_METHOD_ASSIGN,
    WAIT_EVENT_WAL_WRITE
} WaitEventIO;

enum WaitEventIPC

Enumerator
WAIT_EVENT_BGWORKER_SHUTDOWN
WAIT_EVENT_BGWORKER_STARTUP
WAIT_EVENT_BTREE_PAGE
WAIT_EVENT_EXECUTE_GATHER
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_FINISH
WAIT_EVENT_PARALLEL_BITMAP_SCAN
WAIT_EVENT_PROCARRAY_GROUP_UPDATE
WAIT_EVENT_REPLICATION_ORIGIN_DROP
WAIT_EVENT_REPLICATION_SLOT_DROP
WAIT_EVENT_SAFE_SNAPSHOT
WAIT_EVENT_SYNC_REP

Definition at line 800 of file pgstat.h.

{
    WAIT_EVENT_BGWORKER_SHUTDOWN = PG_WAIT_IPC,
    WAIT_EVENT_BGWORKER_STARTUP,
    WAIT_EVENT_BTREE_PAGE,
    WAIT_EVENT_EXECUTE_GATHER,
    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_FINISH,
    WAIT_EVENT_PARALLEL_BITMAP_SCAN,
    WAIT_EVENT_PROCARRAY_GROUP_UPDATE,
    WAIT_EVENT_REPLICATION_ORIGIN_DROP,
    WAIT_EVENT_REPLICATION_SLOT_DROP,
    WAIT_EVENT_SAFE_SNAPSHOT,
    WAIT_EVENT_SYNC_REP
} WaitEventIPC;

enum WaitEventTimeout

Enumerator
WAIT_EVENT_BASE_BACKUP_THROTTLE
WAIT_EVENT_PG_SLEEP
WAIT_EVENT_RECOVERY_APPLY_DELAY

Definition at line 827 of file pgstat.h.

{
    WAIT_EVENT_BASE_BACKUP_THROTTLE = PG_WAIT_TIMEOUT,
    WAIT_EVENT_PG_SLEEP,
    WAIT_EVENT_RECOVERY_APPLY_DELAY
} WaitEventTimeout;

Function Documentation

void allow_immediate_pgstat_restart

(

void

)

Definition at line 790 of file pgstat.c.

References last_pgstat_start_time.

Referenced by HandleChildCrash().

{
    last_pgstat_start_time = 0;
}

void AtEOSubXact_PgStat	(	bool	isCommit,
		int	nestDepth
	)

Definition at line 2136 of file pgstat.c.

References Assert, PgStat_SubXactStatus::first, get_tabstat_stack_level(), PgStat_TableXactStatus::nest_level, PgStat_SubXactStatus::nest_level, PgStat_TableXactStatus::next, NULL, PgStat_TableXactStatus::parent, pfree(), pgstat_truncate_restore_counters(), pgstat_truncate_save_counters(), pgStatXactStack, PgStat_SubXactStatus::prev, PgStat_TableStatus::t_counts, PgStat_TableCounts::t_delta_dead_tuples, PgStat_TableCounts::t_tuples_deleted, PgStat_TableCounts::t_tuples_inserted, PgStat_TableCounts::t_tuples_updated, PgStat_TableStatus::trans, trans, PgStat_TableXactStatus::truncated, PgStat_TableXactStatus::tuples_deleted, PgStat_TableXactStatus::tuples_inserted, PgStat_TableXactStatus::tuples_updated, and PgStat_TableXactStatus::upper.

Referenced by AbortSubTransaction(), and CommitSubTransaction().

{
    PgStat_SubXactStatus *xact_state;

    /*
     * Transfer transactional insert/update counts into the next higher
     * subtransaction state.
     */
    xact_state = pgStatXactStack;
    if (xact_state != NULL &&
        xact_state->nest_level >= nestDepth)
    {
        PgStat_TableXactStatus *trans;
        PgStat_TableXactStatus *next_trans;

        /* delink xact_state from stack immediately to simplify reuse case */
        pgStatXactStack = xact_state->prev;

        for (trans = xact_state->first; trans != NULL; trans = next_trans)
        {
            PgStat_TableStatus *tabstat;

            next_trans = trans->next;
            Assert(trans->nest_level == nestDepth);
            tabstat = trans->parent;
            Assert(tabstat->trans == trans);
            if (isCommit)
            {
                if (trans->upper && trans->upper->nest_level == nestDepth - 1)
                {
                    if (trans->truncated)
                    {
                        /* propagate the truncate status one level up */
                        pgstat_truncate_save_counters(trans->upper);
                        /* replace upper xact stats with ours */
                        trans->upper->tuples_inserted = trans->tuples_inserted;
                        trans->upper->tuples_updated = trans->tuples_updated;
                        trans->upper->tuples_deleted = trans->tuples_deleted;
                    }
                    else
                    {
                        trans->upper->tuples_inserted += trans->tuples_inserted;
                        trans->upper->tuples_updated += trans->tuples_updated;
                        trans->upper->tuples_deleted += trans->tuples_deleted;
                    }
                    tabstat->trans = trans->upper;
                    pfree(trans);
                }
                else
                {
                    /*
                     * When there isn't an immediate parent state, we can just
                     * reuse the record instead of going through a
                     * palloc/pfree pushup (this works since it's all in
                     * TopTransactionContext anyway).  We have to re-link it
                     * into the parent level, though, and that might mean
                     * pushing a new entry into the pgStatXactStack.
                     */
                    PgStat_SubXactStatus *upper_xact_state;

                    upper_xact_state = get_tabstat_stack_level(nestDepth - 1);
                    trans->next = upper_xact_state->first;
                    upper_xact_state->first = trans;
                    trans->nest_level = nestDepth - 1;
                }
            }
            else
            {
                /*
                 * On abort, update top-level tabstat counts, then forget the
                 * subtransaction
                 */

                /* first restore values obliterated by truncate */
                pgstat_truncate_restore_counters(trans);
                /* count attempted actions regardless of commit/abort */
                tabstat->t_counts.t_tuples_inserted += trans->tuples_inserted;
                tabstat->t_counts.t_tuples_updated += trans->tuples_updated;
                tabstat->t_counts.t_tuples_deleted += trans->tuples_deleted;
                /* inserted tuples are dead, deleted tuples are unaffected */
                tabstat->t_counts.t_delta_dead_tuples +=
                    trans->tuples_inserted + trans->tuples_updated;
                tabstat->trans = trans->upper;
                pfree(trans);
            }
        }
        pfree(xact_state);
    }
}

void AtEOXact_PgStat

(

bool

isCommit

)

Definition at line 2053 of file pgstat.c.

References Assert, PgStat_SubXactStatus::first, PgStat_TableXactStatus::nest_level, PgStat_SubXactStatus::nest_level, PgStat_TableXactStatus::next, NULL, PgStat_TableXactStatus::parent, pgstat_clear_snapshot(), pgstat_truncate_restore_counters(), pgStatXactCommit, pgStatXactRollback, pgStatXactStack, PgStat_SubXactStatus::prev, PgStat_TableCounts::t_changed_tuples, PgStat_TableStatus::t_counts, PgStat_TableCounts::t_delta_dead_tuples, PgStat_TableCounts::t_delta_live_tuples, PgStat_TableCounts::t_truncated, PgStat_TableCounts::t_tuples_deleted, PgStat_TableCounts::t_tuples_inserted, PgStat_TableCounts::t_tuples_updated, PgStat_TableStatus::trans, trans, PgStat_TableXactStatus::truncated, PgStat_TableXactStatus::tuples_deleted, PgStat_TableXactStatus::tuples_inserted, PgStat_TableXactStatus::tuples_updated, and PgStat_TableXactStatus::upper.

Referenced by AbortTransaction(), CommitTransaction(), and FinishPreparedTransaction().

{
    PgStat_SubXactStatus *xact_state;

    /*
     * Count transaction commit or abort.  (We use counters, not just bools,
     * in case the reporting message isn't sent right away.)
     */
    if (isCommit)
        pgStatXactCommit++;
    else
        pgStatXactRollback++;

    /*
     * Transfer transactional insert/update counts into the base tabstat
     * entries.  We don't bother to free any of the transactional state, since
     * it's all in TopTransactionContext and will go away anyway.
     */
    xact_state = pgStatXactStack;
    if (xact_state != NULL)
    {
        PgStat_TableXactStatus *trans;

        Assert(xact_state->nest_level == 1);
        Assert(xact_state->prev == NULL);
        for (trans = xact_state->first; trans != NULL; trans = trans->next)
        {
            PgStat_TableStatus *tabstat;

            Assert(trans->nest_level == 1);
            Assert(trans->upper == NULL);
            tabstat = trans->parent;
            Assert(tabstat->trans == trans);
            /* restore pre-truncate stats (if any) in case of aborted xact */
            if (!isCommit)
                pgstat_truncate_restore_counters(trans);
            /* count attempted actions regardless of commit/abort */
            tabstat->t_counts.t_tuples_inserted += trans->tuples_inserted;
            tabstat->t_counts.t_tuples_updated += trans->tuples_updated;
            tabstat->t_counts.t_tuples_deleted += trans->tuples_deleted;
            if (isCommit)
            {
                tabstat->t_counts.t_truncated = trans->truncated;
                if (trans->truncated)
                {
                    /* forget live/dead stats seen by backend thus far */
                    tabstat->t_counts.t_delta_live_tuples = 0;
                    tabstat->t_counts.t_delta_dead_tuples = 0;
                }
                /* insert adds a live tuple, delete removes one */
                tabstat->t_counts.t_delta_live_tuples +=
                    trans->tuples_inserted - trans->tuples_deleted;
                /* update and delete each create a dead tuple */
                tabstat->t_counts.t_delta_dead_tuples +=
                    trans->tuples_updated + trans->tuples_deleted;
                /* insert, update, delete each count as one change event */
                tabstat->t_counts.t_changed_tuples +=
                    trans->tuples_inserted + trans->tuples_updated +
                    trans->tuples_deleted;
            }
            else
            {
                /* inserted tuples are dead, deleted tuples are unaffected */
                tabstat->t_counts.t_delta_dead_tuples +=
                    trans->tuples_inserted + trans->tuples_updated;
                /* an aborted xact generates no changed_tuple events */
            }
            tabstat->trans = NULL;
        }
    }
    pgStatXactStack = NULL;

    /* Make sure any stats snapshot is thrown away */
    pgstat_clear_snapshot();
}

void AtPrepare_PgStat

(

void

)

Definition at line 2235 of file pgstat.c.

References Assert, PgStat_TableXactStatus::deleted_pre_trunc, TwoPhasePgStatRecord::deleted_pre_trunc, PgStat_SubXactStatus::first, PgStat_TableXactStatus::inserted_pre_trunc, TwoPhasePgStatRecord::inserted_pre_trunc, PgStat_TableXactStatus::nest_level, PgStat_SubXactStatus::nest_level, PgStat_TableXactStatus::next, NULL, PgStat_TableXactStatus::parent, pgStatXactStack, PgStat_SubXactStatus::prev, RegisterTwoPhaseRecord(), PgStat_TableStatus::t_id, TwoPhasePgStatRecord::t_id, PgStat_TableStatus::t_shared, TwoPhasePgStatRecord::t_shared, TwoPhasePgStatRecord::t_truncated, PgStat_TableStatus::trans, trans, PgStat_TableXactStatus::truncated, PgStat_TableXactStatus::tuples_deleted, TwoPhasePgStatRecord::tuples_deleted, PgStat_TableXactStatus::tuples_inserted, TwoPhasePgStatRecord::tuples_inserted, PgStat_TableXactStatus::tuples_updated, TwoPhasePgStatRecord::tuples_updated, TWOPHASE_RM_PGSTAT_ID, PgStat_TableXactStatus::updated_pre_trunc, TwoPhasePgStatRecord::updated_pre_trunc, and PgStat_TableXactStatus::upper.

Referenced by PrepareTransaction().

{
    PgStat_SubXactStatus *xact_state;

    xact_state = pgStatXactStack;
    if (xact_state != NULL)
    {
        PgStat_TableXactStatus *trans;

        Assert(xact_state->nest_level == 1);
        Assert(xact_state->prev == NULL);
        for (trans = xact_state->first; trans != NULL; trans = trans->next)
        {
            PgStat_TableStatus *tabstat;
            TwoPhasePgStatRecord record;

            Assert(trans->nest_level == 1);
            Assert(trans->upper == NULL);
            tabstat = trans->parent;
            Assert(tabstat->trans == trans);

            record.tuples_inserted = trans->tuples_inserted;
            record.tuples_updated = trans->tuples_updated;
            record.tuples_deleted = trans->tuples_deleted;
            record.inserted_pre_trunc = trans->inserted_pre_trunc;
            record.updated_pre_trunc = trans->updated_pre_trunc;
            record.deleted_pre_trunc = trans->deleted_pre_trunc;
            record.t_id = tabstat->t_id;
            record.t_shared = tabstat->t_shared;
            record.t_truncated = trans->truncated;

            RegisterTwoPhaseRecord(TWOPHASE_RM_PGSTAT_ID, 0,
                                   &record, sizeof(TwoPhasePgStatRecord));
        }
    }
}

Size BackendStatusShmemSize

(

void

)

Definition at line 2604 of file pgstat.c.

References add_size(), mul_size(), NAMEDATALEN, NumBackendStatSlots, and pgstat_track_activity_query_size.

Referenced by CreateSharedMemoryAndSemaphores().

{
    Size        size;

    /* BackendStatusArray: */
    size = mul_size(sizeof(PgBackendStatus), NumBackendStatSlots);
    /* BackendAppnameBuffer: */
    size = add_size(size,
                    mul_size(NAMEDATALEN, NumBackendStatSlots));
    /* BackendClientHostnameBuffer: */
    size = add_size(size,
                    mul_size(NAMEDATALEN, NumBackendStatSlots));
    /* BackendActivityBuffer: */
    size = add_size(size,
                    mul_size(pgstat_track_activity_query_size, NumBackendStatSlots));
#ifdef USE_SSL
    /* BackendSslStatusBuffer: */
    size = add_size(size,
                    mul_size(sizeof(PgBackendSSLStatus), NumBackendStatSlots));
#endif
    return size;
}

void CreateSharedBackendStatus

(

void

)

Definition at line 2632 of file pgstat.c.

References BackendActivityBuffer, BackendAppnameBuffer, BackendClientHostnameBuffer, buffer, i, MaxBackends, MemSet, mul_size(), NAMEDATALEN, NumBackendStatSlots, pgstat_track_activity_query_size, ShmemInitStruct(), PgBackendStatus::st_activity, PgBackendStatus::st_appname, PgBackendStatus::st_clienthostname, and PgBackendStatus::st_sslstatus.

Referenced by CreateSharedMemoryAndSemaphores().

{
    Size        size;
    bool        found;
    int         i;
    char       *buffer;

    /* Create or attach to the shared array */
    size = mul_size(sizeof(PgBackendStatus), NumBackendStatSlots);
    BackendStatusArray = (PgBackendStatus *)
        ShmemInitStruct("Backend Status Array", size, &found);

    if (!found)
    {
        /*
         * We're the first - initialize.
         */
        MemSet(BackendStatusArray, 0, size);
    }

    /* Create or attach to the shared appname buffer */
    size = mul_size(NAMEDATALEN, MaxBackends);
    BackendAppnameBuffer = (char *)
        ShmemInitStruct("Backend Application Name Buffer", size, &found);

    if (!found)
    {
        MemSet(BackendAppnameBuffer, 0, size);

        /* Initialize st_appname pointers. */
        buffer = BackendAppnameBuffer;
        for (i = 0; i < NumBackendStatSlots; i++)
        {
            BackendStatusArray[i].st_appname = buffer;
            buffer += NAMEDATALEN;
        }
    }

    /* Create or attach to the shared client hostname buffer */
    size = mul_size(NAMEDATALEN, MaxBackends);
    BackendClientHostnameBuffer = (char *)
        ShmemInitStruct("Backend Client Host Name Buffer", size, &found);

    if (!found)
    {
        MemSet(BackendClientHostnameBuffer, 0, size);

        /* Initialize st_clienthostname pointers. */
        buffer = BackendClientHostnameBuffer;
        for (i = 0; i < NumBackendStatSlots; i++)
        {
            BackendStatusArray[i].st_clienthostname = buffer;
            buffer += NAMEDATALEN;
        }
    }

    /* Create or attach to the shared activity buffer */
    BackendActivityBufferSize = mul_size(pgstat_track_activity_query_size,
                                         NumBackendStatSlots);
    BackendActivityBuffer = (char *)
        ShmemInitStruct("Backend Activity Buffer",
                        BackendActivityBufferSize,
                        &found);

    if (!found)
    {
        MemSet(BackendActivityBuffer, 0, size);

        /* Initialize st_activity pointers. */
        buffer = BackendActivityBuffer;
        for (i = 0; i < NumBackendStatSlots; i++)
        {
            BackendStatusArray[i].st_activity = buffer;
            buffer += pgstat_track_activity_query_size;
        }
    }

#ifdef USE_SSL
    /* Create or attach to the shared SSL status buffer */
    size = mul_size(sizeof(PgBackendSSLStatus), NumBackendStatSlots);
    BackendSslStatusBuffer = (PgBackendSSLStatus *)
        ShmemInitStruct("Backend SSL Status Buffer", size, &found);

    if (!found)
    {
        PgBackendSSLStatus *ptr;

        MemSet(BackendSslStatusBuffer, 0, size);

        /* Initialize st_sslstatus pointers. */
        ptr = BackendSslStatusBuffer;
        for (i = 0; i < NumBackendStatSlots; i++)
        {
            BackendStatusArray[i].st_sslstatus = ptr;
            ptr++;
        }
    }
#endif
}

PgStat_BackendFunctionEntry* find_funcstat_entry

(

Oid

func_id

)

Definition at line 1633 of file pgstat.c.

References HASH_FIND, hash_search(), and NULL.

Referenced by pg_stat_get_xact_function_calls(), pg_stat_get_xact_function_self_time(), and pg_stat_get_xact_function_total_time().

{
    if (pgStatFunctions == NULL)
        return NULL;

    return (PgStat_BackendFunctionEntry *) hash_search(pgStatFunctions,
                                                       (void *) &func_id,
                                                       HASH_FIND, NULL);
}

PgStat_TableStatus* find_tabstat_entry

(

Oid

rel_id

)

Definition at line 1838 of file pgstat.c.

References HASH_FIND, hash_search(), NULL, and TabStatHashEntry::tsa_entry.

Referenced by pg_stat_get_xact_blocks_fetched(), pg_stat_get_xact_blocks_hit(), pg_stat_get_xact_numscans(), pg_stat_get_xact_tuples_deleted(), pg_stat_get_xact_tuples_fetched(), pg_stat_get_xact_tuples_hot_updated(), pg_stat_get_xact_tuples_inserted(), pg_stat_get_xact_tuples_returned(), and pg_stat_get_xact_tuples_updated().

{
    TabStatHashEntry *hash_entry;

    /* If hashtable doesn't exist, there are no entries at all */
    if (!pgStatTabHash)
        return NULL;

    hash_entry = hash_search(pgStatTabHash, &rel_id, HASH_FIND, NULL);
    if (!hash_entry)
        return NULL;

    /* Note that this step could also return NULL, but that's correct */
    return hash_entry->tsa_entry;
}

void pgstat_bestart

(

void

)

Definition at line 2785 of file pgstat.c.

References am_walsender, application_name, Assert, B_AUTOVAC_LAUNCHER, B_AUTOVAC_WORKER, B_BACKEND, B_BG_WORKER, B_BG_WRITER, B_CHECKPOINTER, B_STARTUP, B_WAL_RECEIVER, B_WAL_SENDER, B_WAL_WRITER, be_tls_get_cipher(), be_tls_get_cipher_bits(), be_tls_get_compression(), be_tls_get_peerdn_name(), be_tls_get_version(), BgWriterProcess, CheckpointerProcess, elog, FATAL, GetCurrentTimestamp(), GetSessionUserId(), InvalidBackendId, InvalidOid, IsAutoVacuumLauncherProcess(), IsAutoVacuumWorkerProcess(), IsBackgroundWorker, MemSet, MyAuxProcType, MyBackendId, MyBEEntry, MyDatabaseId, MyProcPid, MyProcPort, NAMEDATALEN, NotAnAuxProcess, NULL, pgstat_increment_changecount_after, pgstat_increment_changecount_before, pgstat_report_appname(), pgstat_track_activity_query_size, proc_exit(), PROGRESS_COMMAND_INVALID, Port::raddr, Port::remote_hostname, Port::SessionStartTime, PgBackendSSLStatus::ssl_bits, PgBackendSSLStatus::ssl_cipher, PgBackendSSLStatus::ssl_clientdn, PgBackendSSLStatus::ssl_compression, PgBackendSSLStatus::ssl_version, PgBackendStatus::st_activity, PgBackendStatus::st_activity_start_timestamp, PgBackendStatus::st_appname, PgBackendStatus::st_backendType, PgBackendStatus::st_changecount, PgBackendStatus::st_clientaddr, PgBackendStatus::st_clienthostname, PgBackendStatus::st_databaseid, PgBackendStatus::st_proc_start_timestamp, PgBackendStatus::st_procpid, PgBackendStatus::st_progress_command, PgBackendStatus::st_progress_command_target, PgBackendStatus::st_ssl, PgBackendStatus::st_sslstatus, PgBackendStatus::st_state, PgBackendStatus::st_state_start_timestamp, PgBackendStatus::st_userid, PgBackendStatus::st_xact_start_timestamp, StartupProcess, STATE_UNDEFINED, strlcpy(), WalReceiverProcess, and WalWriterProcess.

Referenced by AuxiliaryProcessMain(), and InitPostgres().

{
    TimestampTz proc_start_timestamp;
    SockAddr    clientaddr;
    volatile PgBackendStatus *beentry;

    /*
     * To minimize the time spent modifying the PgBackendStatus entry, fetch
     * all the needed data first.
     *
     * If we have a MyProcPort, use its session start time (for consistency,
     * and to save a kernel call).
     */
    if (MyProcPort)
        proc_start_timestamp = MyProcPort->SessionStartTime;
    else
        proc_start_timestamp = GetCurrentTimestamp();

    /*
     * We may not have a MyProcPort (eg, if this is the autovacuum process).
     * If so, use all-zeroes client address, which is dealt with specially in
     * pg_stat_get_backend_client_addr and pg_stat_get_backend_client_port.
     */
    if (MyProcPort)
        memcpy(&clientaddr, &MyProcPort->raddr, sizeof(clientaddr));
    else
        MemSet(&clientaddr, 0, sizeof(clientaddr));

    /*
     * Initialize my status entry, following the protocol of bumping
     * st_changecount before and after; and make sure it's even afterwards. We
     * use a volatile pointer here to ensure the compiler doesn't try to get
     * cute.
     */
    beentry = MyBEEntry;

    /* pgstats state must be initialized from pgstat_initialize() */
    Assert(beentry != NULL);

    if (MyBackendId != InvalidBackendId)
    {
        if (IsAutoVacuumLauncherProcess())
        {
            /* Autovacuum Launcher */
            beentry->st_backendType = B_AUTOVAC_LAUNCHER;
        }
        else if (IsAutoVacuumWorkerProcess())
        {
            /* Autovacuum Worker */
            beentry->st_backendType = B_AUTOVAC_WORKER;
        }
        else if (am_walsender)
        {
            /* Wal sender */
            beentry->st_backendType = B_WAL_SENDER;
        }
        else if (IsBackgroundWorker)
        {
            /* bgworker */
            beentry->st_backendType = B_BG_WORKER;
        }
        else
        {
            /* client-backend */
            beentry->st_backendType = B_BACKEND;
        }
    }
    else
    {
        /* Must be an auxiliary process */
        Assert(MyAuxProcType != NotAnAuxProcess);
        switch (MyAuxProcType)
        {
            case StartupProcess:
                beentry->st_backendType = B_STARTUP;
                break;
            case BgWriterProcess:
                beentry->st_backendType = B_BG_WRITER;
                break;
            case CheckpointerProcess:
                beentry->st_backendType = B_CHECKPOINTER;
                break;
            case WalWriterProcess:
                beentry->st_backendType = B_WAL_WRITER;
                break;
            case WalReceiverProcess:
                beentry->st_backendType = B_WAL_RECEIVER;
                break;
            default:
                elog(FATAL, "unrecognized process type: %d",
                     (int) MyAuxProcType);
                proc_exit(1);
        }
    }

    do
    {
        pgstat_increment_changecount_before(beentry);
    } while ((beentry->st_changecount & 1) == 0);

    beentry->st_procpid = MyProcPid;
    beentry->st_proc_start_timestamp = proc_start_timestamp;
    beentry->st_activity_start_timestamp = 0;
    beentry->st_state_start_timestamp = 0;
    beentry->st_xact_start_timestamp = 0;
    beentry->st_databaseid = MyDatabaseId;

    /* We have userid for client-backends, wal-sender and bgworker processes */
    if (beentry->st_backendType == B_BACKEND
        || beentry->st_backendType == B_WAL_SENDER
        || beentry->st_backendType == B_BG_WORKER)
        beentry->st_userid = GetSessionUserId();
    else
        beentry->st_userid = InvalidOid;

    beentry->st_clientaddr = clientaddr;
    if (MyProcPort && MyProcPort->remote_hostname)
        strlcpy(beentry->st_clienthostname, MyProcPort->remote_hostname,
                NAMEDATALEN);
    else
        beentry->st_clienthostname[0] = '\0';
#ifdef USE_SSL
    if (MyProcPort && MyProcPort->ssl != NULL)
    {
        beentry->st_ssl = true;
        beentry->st_sslstatus->ssl_bits = be_tls_get_cipher_bits(MyProcPort);
        beentry->st_sslstatus->ssl_compression = be_tls_get_compression(MyProcPort);
        be_tls_get_version(MyProcPort, beentry->st_sslstatus->ssl_version, NAMEDATALEN);
        be_tls_get_cipher(MyProcPort, beentry->st_sslstatus->ssl_cipher, NAMEDATALEN);
        be_tls_get_peerdn_name(MyProcPort, beentry->st_sslstatus->ssl_clientdn, NAMEDATALEN);
    }
    else
    {
        beentry->st_ssl = false;
    }
#else
    beentry->st_ssl = false;
#endif
    beentry->st_state = STATE_UNDEFINED;
    beentry->st_appname[0] = '\0';
    beentry->st_activity[0] = '\0';
    /* Also make sure the last byte in each string area is always 0 */
    beentry->st_clienthostname[NAMEDATALEN - 1] = '\0';
    beentry->st_appname[NAMEDATALEN - 1] = '\0';
    beentry->st_activity[pgstat_track_activity_query_size - 1] = '\0';
    beentry->st_progress_command = PROGRESS_COMMAND_INVALID;
    beentry->st_progress_command_target = InvalidOid;

    /*
     * we don't zero st_progress_param here to save cycles; nobody should
     * examine it until st_progress_command has been set to something other
     * than PROGRESS_COMMAND_INVALID
     */

    pgstat_increment_changecount_after(beentry);

    /* Update app name to current GUC setting */
    if (application_name)
        pgstat_report_appname(application_name);
}

void pgstat_clear_snapshot

(

void

)

Definition at line 5549 of file pgstat.c.

References localNumBackends, MemoryContextDelete(), and NULL.

Referenced by AtEOXact_PgStat(), autovac_refresh_stats(), AutoVacLauncherMain(), pg_stat_clear_snapshot(), and PostPrepare_PgStat().

{
    /* Release memory, if any was allocated */
    if (pgStatLocalContext)
        MemoryContextDelete(pgStatLocalContext);

    /* Reset variables */
    pgStatLocalContext = NULL;
    pgStatDBHash = NULL;
    localBackendStatusTable = NULL;
    localNumBackends = 0;
}

void pgstat_count_heap_delete

(

Relation

rel

)

Definition at line 1953 of file pgstat.c.

References add_tabstat_xact_level(), GetCurrentTransactionNestLevel(), PgStat_TableXactStatus::nest_level, NULL, RelationData::pgstat_info, PgStat_TableStatus::trans, and PgStat_TableXactStatus::tuples_deleted.

Referenced by heap_abort_speculative(), and heap_delete().

{
    PgStat_TableStatus *pgstat_info = rel->pgstat_info;

    if (pgstat_info != NULL)
    {
        /* We have to log the effect at the proper transactional level */
        int         nest_level = GetCurrentTransactionNestLevel();

        if (pgstat_info->trans == NULL ||
            pgstat_info->trans->nest_level != nest_level)
            add_tabstat_xact_level(pgstat_info, nest_level);

        pgstat_info->trans->tuples_deleted++;
    }
}

void pgstat_count_heap_insert	(	Relation	rel,
		PgStat_Counter	n
	)

Definition at line 1907 of file pgstat.c.

References add_tabstat_xact_level(), GetCurrentTransactionNestLevel(), PgStat_TableXactStatus::nest_level, NULL, RelationData::pgstat_info, PgStat_TableStatus::trans, and PgStat_TableXactStatus::tuples_inserted.

Referenced by ExecRefreshMatView(), heap_insert(), and heap_multi_insert().

{
    PgStat_TableStatus *pgstat_info = rel->pgstat_info;

    if (pgstat_info != NULL)
    {
        /* We have to log the effect at the proper transactional level */
        int         nest_level = GetCurrentTransactionNestLevel();

        if (pgstat_info->trans == NULL ||
            pgstat_info->trans->nest_level != nest_level)
            add_tabstat_xact_level(pgstat_info, nest_level);

        pgstat_info->trans->tuples_inserted += n;
    }
}

void pgstat_count_heap_update	(	Relation	rel,
		bool	hot
	)

Definition at line 1928 of file pgstat.c.

References add_tabstat_xact_level(), GetCurrentTransactionNestLevel(), PgStat_TableXactStatus::nest_level, NULL, RelationData::pgstat_info, PgStat_TableStatus::t_counts, PgStat_TableCounts::t_tuples_hot_updated, PgStat_TableStatus::trans, and PgStat_TableXactStatus::tuples_updated.

Referenced by heap_update().

{
    PgStat_TableStatus *pgstat_info = rel->pgstat_info;

    if (pgstat_info != NULL)
    {
        /* We have to log the effect at the proper transactional level */
        int         nest_level = GetCurrentTransactionNestLevel();

        if (pgstat_info->trans == NULL ||
            pgstat_info->trans->nest_level != nest_level)
            add_tabstat_xact_level(pgstat_info, nest_level);

        pgstat_info->trans->tuples_updated++;

        /* t_tuples_hot_updated is nontransactional, so just advance it */
        if (hot)
            pgstat_info->t_counts.t_tuples_hot_updated++;
    }
}

void pgstat_count_truncate

(

Relation

rel

)

Definition at line 2008 of file pgstat.c.

References add_tabstat_xact_level(), GetCurrentTransactionNestLevel(), PgStat_TableXactStatus::nest_level, NULL, RelationData::pgstat_info, pgstat_truncate_save_counters(), PgStat_TableStatus::trans, PgStat_TableXactStatus::tuples_deleted, PgStat_TableXactStatus::tuples_inserted, and PgStat_TableXactStatus::tuples_updated.

Referenced by ExecRefreshMatView(), and ExecuteTruncate().

{
    PgStat_TableStatus *pgstat_info = rel->pgstat_info;

    if (pgstat_info != NULL)
    {
        /* We have to log the effect at the proper transactional level */
        int         nest_level = GetCurrentTransactionNestLevel();

        if (pgstat_info->trans == NULL ||
            pgstat_info->trans->nest_level != nest_level)
            add_tabstat_xact_level(pgstat_info, nest_level);

        pgstat_truncate_save_counters(pgstat_info->trans);
        pgstat_info->trans->tuples_inserted = 0;
        pgstat_info->trans->tuples_updated = 0;
        pgstat_info->trans->tuples_deleted = 0;
    }
}

void pgstat_drop_database

(

Oid

databaseid

)

Definition at line 1250 of file pgstat.c.

References PgStat_MsgDropdb::m_databaseid, PgStat_MsgDropdb::m_hdr, PGINVALID_SOCKET, PGSTAT_MTYPE_DROPDB, pgstat_send(), pgstat_setheader(), and pgStatSock.

Referenced by dropdb(), and pgstat_vacuum_stat().

{
    PgStat_MsgDropdb msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_DROPDB);
    msg.m_databaseid = databaseid;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_end_function_usage	(	PgStat_FunctionCallUsage *	fcu,
		bool	finalize
	)

Definition at line 1653 of file pgstat.c.

References PgStat_FunctionCounts::f_numcalls, PgStat_FunctionCounts::f_self_time, PgStat_FunctionCallUsage::f_start, PgStat_FunctionCounts::f_total_time, PgStat_FunctionCallUsage::fs, have_function_stats, INSTR_TIME_ADD, INSTR_TIME_SET_CURRENT, INSTR_TIME_SUBTRACT, NULL, PgStat_FunctionCallUsage::save_f_total_time, PgStat_FunctionCallUsage::save_total, and total_func_time.

Referenced by call_pltcl_start_proc(), EventTriggerInvoke(), ExecCallTriggerFunc(), ExecInterpExpr(), ExecMakeFunctionResultSet(), ExecMakeTableFunctionResult(), and fmgr_security_definer().

{
    PgStat_FunctionCounts *fs = fcu->fs;
    instr_time  f_total;
    instr_time  f_others;
    instr_time  f_self;

    /* stats not wanted? */
    if (fs == NULL)
        return;

    /* total elapsed time in this function call */
    INSTR_TIME_SET_CURRENT(f_total);
    INSTR_TIME_SUBTRACT(f_total, fcu->f_start);

    /* self usage: elapsed minus anything already charged to other calls */
    f_others = total_func_time;
    INSTR_TIME_SUBTRACT(f_others, fcu->save_total);
    f_self = f_total;
    INSTR_TIME_SUBTRACT(f_self, f_others);

    /* update backend-wide total time */
    INSTR_TIME_ADD(total_func_time, f_self);

    /*
     * Compute the new f_total_time as the total elapsed time added to the
     * pre-call value of f_total_time.  This is necessary to avoid
     * double-counting any time taken by recursive calls of myself.  (We do
     * not need any similar kluge for self time, since that already excludes
     * any recursive calls.)
     */
    INSTR_TIME_ADD(f_total, fcu->save_f_total_time);

    /* update counters in function stats table */
    if (finalize)
        fs->f_numcalls++;
    fs->f_total_time = f_total;
    INSTR_TIME_ADD(fs->f_self_time, f_self);

    /* indicate that we have something to send */
    have_function_stats = true;
}

PgStat_GlobalStats* pgstat_fetch_global

(

void

)

Definition at line 2576 of file pgstat.c.

References backend_read_statsfile(), and globalStats.

Referenced by pg_stat_get_bgwriter_buf_written_checkpoints(), pg_stat_get_bgwriter_buf_written_clean(), pg_stat_get_bgwriter_maxwritten_clean(), pg_stat_get_bgwriter_requested_checkpoints(), pg_stat_get_bgwriter_stat_reset_time(), pg_stat_get_bgwriter_timed_checkpoints(), pg_stat_get_buf_alloc(), pg_stat_get_buf_fsync_backend(), pg_stat_get_buf_written_backend(), pg_stat_get_checkpoint_sync_time(), pg_stat_get_checkpoint_write_time(), and pg_stat_get_snapshot_timestamp().

{
    backend_read_statsfile();

    return &globalStats;
}

PgStat_ArchiverStats* pgstat_fetch_stat_archiver

(

void

)

Definition at line 2559 of file pgstat.c.

References archiverStats, and backend_read_statsfile().

Referenced by pg_stat_get_archiver().

{
    backend_read_statsfile();

    return &archiverStats;
}

PgBackendStatus* pgstat_fetch_stat_beentry

(

int

beid

)

Definition at line 2502 of file pgstat.c.

References LocalPgBackendStatus::backendStatus, localNumBackends, NULL, and pgstat_read_current_status().

Referenced by pg_stat_get_backend_activity(), pg_stat_get_backend_activity_start(), pg_stat_get_backend_client_addr(), pg_stat_get_backend_client_port(), pg_stat_get_backend_dbid(), pg_stat_get_backend_pid(), pg_stat_get_backend_start(), pg_stat_get_backend_userid(), pg_stat_get_backend_wait_event(), pg_stat_get_backend_wait_event_type(), pg_stat_get_backend_xact_start(), and pg_stat_get_db_numbackends().

{
    pgstat_read_current_status();

    if (beid < 1 || beid > localNumBackends)
        return NULL;

    return &localBackendStatusTable[beid - 1].backendStatus;
}

PgStat_StatDBEntry* pgstat_fetch_stat_dbentry

(

Oid

dbid

)

Definition at line 2387 of file pgstat.c.

References backend_read_statsfile(), HASH_FIND, hash_search(), and NULL.

Referenced by do_autovacuum(), do_start_worker(), pg_stat_get_db_blk_read_time(), pg_stat_get_db_blk_write_time(), pg_stat_get_db_blocks_fetched(), pg_stat_get_db_blocks_hit(), pg_stat_get_db_conflict_all(), pg_stat_get_db_conflict_bufferpin(), pg_stat_get_db_conflict_lock(), pg_stat_get_db_conflict_snapshot(), pg_stat_get_db_conflict_startup_deadlock(), pg_stat_get_db_conflict_tablespace(), pg_stat_get_db_deadlocks(), pg_stat_get_db_stat_reset_time(), pg_stat_get_db_temp_bytes(), pg_stat_get_db_temp_files(), pg_stat_get_db_tuples_deleted(), pg_stat_get_db_tuples_fetched(), pg_stat_get_db_tuples_inserted(), pg_stat_get_db_tuples_returned(), pg_stat_get_db_tuples_updated(), pg_stat_get_db_xact_commit(), pg_stat_get_db_xact_rollback(), pgstat_fetch_stat_funcentry(), rebuild_database_list(), and table_recheck_autovac().

{
    /*
     * If not done for this transaction, read the statistics collector stats
     * file into some hash tables.
     */
    backend_read_statsfile();

    /*
     * Lookup the requested database; return NULL if not found
     */
    return (PgStat_StatDBEntry *) hash_search(pgStatDBHash,
                                              (void *) &dbid,
                                              HASH_FIND, NULL);
}

PgStat_StatFuncEntry* pgstat_fetch_stat_funcentry

(

Oid

funcid

)

Definition at line 2470 of file pgstat.c.

References backend_read_statsfile(), PgStat_StatDBEntry::functions, HASH_FIND, hash_search(), MyDatabaseId, NULL, and pgstat_fetch_stat_dbentry().

Referenced by pg_stat_get_function_calls(), pg_stat_get_function_self_time(), and pg_stat_get_function_total_time().

{
    PgStat_StatDBEntry *dbentry;
    PgStat_StatFuncEntry *funcentry = NULL;

    /* load the stats file if needed */
    backend_read_statsfile();

    /* Lookup our database, then find the requested function.  */
    dbentry = pgstat_fetch_stat_dbentry(MyDatabaseId);
    if (dbentry != NULL && dbentry->functions != NULL)
    {
        funcentry = (PgStat_StatFuncEntry *) hash_search(dbentry->functions,
                                                         (void *) &func_id,
                                                         HASH_FIND, NULL);
    }

    return funcentry;
}

LocalPgBackendStatus* pgstat_fetch_stat_local_beentry

(

int

beid

)

Definition at line 2524 of file pgstat.c.

References localNumBackends, NULL, and pgstat_read_current_status().

Referenced by pg_stat_get_activity(), and pg_stat_get_progress_info().

{
    pgstat_read_current_status();

    if (beid < 1 || beid > localNumBackends)
        return NULL;

    return &localBackendStatusTable[beid - 1];
}

int pgstat_fetch_stat_numbackends

(

void

)

Definition at line 2543 of file pgstat.c.

References localNumBackends, and pgstat_read_current_status().

Referenced by pg_stat_get_activity(), pg_stat_get_backend_idset(), pg_stat_get_db_numbackends(), and pg_stat_get_progress_info().

{
    pgstat_read_current_status();

    return localNumBackends;
}

PgStat_StatTabEntry* pgstat_fetch_stat_tabentry

(

Oid

relid

)

Definition at line 2414 of file pgstat.c.

References backend_read_statsfile(), HASH_FIND, hash_search(), InvalidOid, MyDatabaseId, NULL, and PgStat_StatDBEntry::tables.

Referenced by pg_stat_get_analyze_count(), pg_stat_get_autoanalyze_count(), pg_stat_get_autovacuum_count(), pg_stat_get_blocks_fetched(), pg_stat_get_blocks_hit(), pg_stat_get_dead_tuples(), pg_stat_get_last_analyze_time(), pg_stat_get_last_autoanalyze_time(), pg_stat_get_last_autovacuum_time(), pg_stat_get_last_vacuum_time(), pg_stat_get_live_tuples(), pg_stat_get_mod_since_analyze(), pg_stat_get_numscans(), pg_stat_get_tuples_deleted(), pg_stat_get_tuples_fetched(), pg_stat_get_tuples_hot_updated(), pg_stat_get_tuples_inserted(), pg_stat_get_tuples_returned(), pg_stat_get_tuples_updated(), and pg_stat_get_vacuum_count().

{
    Oid         dbid;
    PgStat_StatDBEntry *dbentry;
    PgStat_StatTabEntry *tabentry;

    /*
     * If not done for this transaction, read the statistics collector stats
     * file into some hash tables.
     */
    backend_read_statsfile();

    /*
     * Lookup our database, then look in its table hash table.
     */
    dbid = MyDatabaseId;
    dbentry = (PgStat_StatDBEntry *) hash_search(pgStatDBHash,
                                                 (void *) &dbid,
                                                 HASH_FIND, NULL);
    if (dbentry != NULL && dbentry->tables != NULL)
    {
        tabentry = (PgStat_StatTabEntry *) hash_search(dbentry->tables,
                                                       (void *) &relid,
                                                       HASH_FIND, NULL);
        if (tabentry)
            return tabentry;
    }

    /*
     * If we didn't find it, maybe it's a shared table.
     */
    dbid = InvalidOid;
    dbentry = (PgStat_StatDBEntry *) hash_search(pgStatDBHash,
                                                 (void *) &dbid,
                                                 HASH_FIND, NULL);
    if (dbentry != NULL && dbentry->tables != NULL)
    {
        tabentry = (PgStat_StatTabEntry *) hash_search(dbentry->tables,
                                                       (void *) &relid,
                                                       HASH_FIND, NULL);
        if (tabentry)
            return tabentry;
    }

    return NULL;
}

const char* pgstat_get_backend_current_activity	(	int	pid,
		bool	checkUser
	)

Definition at line 3900 of file pgstat.c.

References BackendStatusArray, CHECK_FOR_INTERRUPTS, GetUserId(), i, MaxBackends, pgstat_save_changecount_after, pgstat_save_changecount_before, PgBackendStatus::st_activity, PgBackendStatus::st_procpid, PgBackendStatus::st_userid, and superuser().

Referenced by DeadLockReport().

{
    PgBackendStatus *beentry;
    int         i;

    beentry = BackendStatusArray;
    for (i = 1; i <= MaxBackends; i++)
    {
        /*
         * Although we expect the target backend's entry to be stable, that
         * doesn't imply that anyone else's is.  To avoid identifying the
         * wrong backend, while we check for a match to the desired PID we
         * must follow the protocol of retrying if st_changecount changes
         * while we examine the entry, or if it's odd.  (This might be
         * unnecessary, since fetching or storing an int is almost certainly
         * atomic, but let's play it safe.)  We use a volatile pointer here to
         * ensure the compiler doesn't try to get cute.
         */
        volatile PgBackendStatus *vbeentry = beentry;
        bool        found;

        for (;;)
        {
            int         before_changecount;
            int         after_changecount;

            pgstat_save_changecount_before(vbeentry, before_changecount);

            found = (vbeentry->st_procpid == pid);

            pgstat_save_changecount_after(vbeentry, after_changecount);

            if (before_changecount == after_changecount &&
                (before_changecount & 1) == 0)
                break;

            /* Make sure we can break out of loop if stuck... */
            CHECK_FOR_INTERRUPTS();
        }

        if (found)
        {
            /* Now it is safe to use the non-volatile pointer */
            if (checkUser && !superuser() && beentry->st_userid != GetUserId())
                return "<insufficient privilege>";
            else if (*(beentry->st_activity) == '\0')
                return "<command string not enabled>";
            else
                return beentry->st_activity;
        }

        beentry++;
    }

    /* If we get here, caller is in error ... */
    return "<backend information not available>";
}

const char* pgstat_get_backend_desc

(

BackendType

backendType

)

Definition at line 4033 of file pgstat.c.

References B_AUTOVAC_LAUNCHER, B_AUTOVAC_WORKER, B_BACKEND, B_BG_WORKER, B_BG_WRITER, B_CHECKPOINTER, B_STARTUP, B_WAL_RECEIVER, B_WAL_SENDER, and B_WAL_WRITER.

Referenced by pg_stat_get_activity().

{
    const char *backendDesc = "unknown process type";

    switch (backendType)
    {
        case B_AUTOVAC_LAUNCHER:
            backendDesc = "autovacuum launcher";
            break;
        case B_AUTOVAC_WORKER:
            backendDesc = "autovacuum worker";
            break;
        case B_BACKEND:
            backendDesc = "client backend";
            break;
        case B_BG_WORKER:
            backendDesc = "background worker";
            break;
        case B_BG_WRITER:
            backendDesc = "background writer";
            break;
        case B_CHECKPOINTER:
            backendDesc = "checkpointer";
            break;
        case B_STARTUP:
            backendDesc = "startup";
            break;
        case B_WAL_RECEIVER:
            backendDesc = "walreceiver";
            break;
        case B_WAL_SENDER:
            backendDesc = "walsender";
            break;
        case B_WAL_WRITER:
            backendDesc = "walwriter";
            break;
    }

    return backendDesc;
}

const char* pgstat_get_crashed_backend_activity	(	int	pid,
		char *	buffer,
		int	buflen
	)

Definition at line 3975 of file pgstat.c.

References ascii_safe_strlcpy(), BackendStatusArray, buffer, i, MaxBackends, Min, NULL, pgstat_track_activity_query_size, PgBackendStatus::st_activity, and PgBackendStatus::st_procpid.

Referenced by LogChildExit().

{
    volatile PgBackendStatus *beentry;
    int         i;

    beentry = BackendStatusArray;

    /*
     * We probably shouldn't get here before shared memory has been set up,
     * but be safe.
     */
    if (beentry == NULL || BackendActivityBuffer == NULL)
        return NULL;

    for (i = 1; i <= MaxBackends; i++)
    {
        if (beentry->st_procpid == pid)
        {
            /* Read pointer just once, so it can't change after validation */
            const char *activity = beentry->st_activity;
            const char *activity_last;

            /*
             * We mustn't access activity string before we verify that it
             * falls within the BackendActivityBuffer. To make sure that the
             * entire string including its ending is contained within the
             * buffer, subtract one activity length from the buffer size.
             */
            activity_last = BackendActivityBuffer + BackendActivityBufferSize
                - pgstat_track_activity_query_size;

            if (activity < BackendActivityBuffer ||
                activity > activity_last)
                return NULL;

            /* If no string available, no point in a report */
            if (activity[0] == '\0')
                return NULL;

            /*
             * Copy only ASCII-safe characters so we don't run into encoding
             * problems when reporting the message; and be sure not to run off
             * the end of memory.
             */
            ascii_safe_strlcpy(buffer, activity,
                               Min(buflen, pgstat_track_activity_query_size));

            return buffer;
        }

        beentry++;
    }

    /* PID not found */
    return NULL;
}

const char* pgstat_get_wait_event

(

uint32

wait_event_info

)

Definition at line 3386 of file pgstat.c.

References GetLockNameFromTagType(), GetLWLockIdentifier(), NULL, PG_WAIT_ACTIVITY, PG_WAIT_BUFFER_PIN, PG_WAIT_CLIENT, PG_WAIT_EXTENSION, PG_WAIT_IO, PG_WAIT_IPC, PG_WAIT_LOCK, PG_WAIT_LWLOCK, PG_WAIT_TIMEOUT, pgstat_get_wait_activity(), pgstat_get_wait_client(), pgstat_get_wait_io(), pgstat_get_wait_ipc(), and pgstat_get_wait_timeout().

Referenced by pg_stat_get_activity(), and pg_stat_get_backend_wait_event().

{
    uint32      classId;
    uint16      eventId;
    const char *event_name;

    /* report process as not waiting. */
    if (wait_event_info == 0)
        return NULL;

    classId = wait_event_info & 0xFF000000;
    eventId = wait_event_info & 0x0000FFFF;

    switch (classId)
    {
        case PG_WAIT_LWLOCK:
            event_name = GetLWLockIdentifier(classId, eventId);
            break;
        case PG_WAIT_LOCK:
            event_name = GetLockNameFromTagType(eventId);
            break;
        case PG_WAIT_BUFFER_PIN:
            event_name = "BufferPin";
            break;
        case PG_WAIT_ACTIVITY:
            {
                WaitEventActivity w = (WaitEventActivity) wait_event_info;

                event_name = pgstat_get_wait_activity(w);
                break;
            }
        case PG_WAIT_CLIENT:
            {
                WaitEventClient w = (WaitEventClient) wait_event_info;

                event_name = pgstat_get_wait_client(w);
                break;
            }
        case PG_WAIT_EXTENSION:
            event_name = "Extension";
            break;
        case PG_WAIT_IPC:
            {
                WaitEventIPC w = (WaitEventIPC) wait_event_info;

                event_name = pgstat_get_wait_ipc(w);
                break;
            }
        case PG_WAIT_TIMEOUT:
            {
                WaitEventTimeout w = (WaitEventTimeout) wait_event_info;

                event_name = pgstat_get_wait_timeout(w);
                break;
            }
        case PG_WAIT_IO:
            {
                WaitEventIO w = (WaitEventIO) wait_event_info;

                event_name = pgstat_get_wait_io(w);
                break;
            }
        default:
            event_name = "unknown wait event";
            break;
    }

    return event_name;
}

const char* pgstat_get_wait_event_type

(

uint32

wait_event_info

)

Definition at line 3331 of file pgstat.c.

References NULL, PG_WAIT_ACTIVITY, PG_WAIT_BUFFER_PIN, PG_WAIT_CLIENT, PG_WAIT_EXTENSION, PG_WAIT_IO, PG_WAIT_IPC, PG_WAIT_LOCK, PG_WAIT_LWLOCK, and PG_WAIT_TIMEOUT.

Referenced by pg_stat_get_activity(), and pg_stat_get_backend_wait_event_type().

{
    uint32      classId;
    const char *event_type;

    /* report process as not waiting. */
    if (wait_event_info == 0)
        return NULL;

    classId = wait_event_info & 0xFF000000;

    switch (classId)
    {
        case PG_WAIT_LWLOCK:
            event_type = "LWLock";
            break;
        case PG_WAIT_LOCK:
            event_type = "Lock";
            break;
        case PG_WAIT_BUFFER_PIN:
            event_type = "BufferPin";
            break;
        case PG_WAIT_ACTIVITY:
            event_type = "Activity";
            break;
        case PG_WAIT_CLIENT:
            event_type = "Client";
            break;
        case PG_WAIT_EXTENSION:
            event_type = "Extension";
            break;
        case PG_WAIT_IPC:
            event_type = "IPC";
            break;
        case PG_WAIT_TIMEOUT:
            event_type = "Timeout";
            break;
        case PG_WAIT_IO:
            event_type = "IO";
            break;
        default:
            event_type = "???";
            break;
    }

    return event_type;
}

void pgstat_init

(

void

)

Definition at line 355 of file pgstat.c.

References addrinfo::ai_next, AI_PASSIVE, bind, closesocket, connect, EINTR, elog, ereport, errcode(), errcode_for_socket_access(), errmsg(), gai_strerror, LOG, NULL, pg_freeaddrinfo_all(), pg_getaddrinfo_all(), pg_set_noblock(), PGC_INTERNAL, PGC_S_OVERRIDE, PGINVALID_SOCKET, PGSTAT_MAX_MSG_SIZE, PGSTAT_MIN_RCVBUF, pgStatAddr, pgStatSock, recv, select, send, SetConfigOption(), socket, StaticAssertStmt, and TESTBYTEVAL.

Referenced by PostmasterMain().

{
    ACCEPT_TYPE_ARG3 alen;
    struct addrinfo *addrs = NULL,
               *addr,
                hints;
    int         ret;
    fd_set      rset;
    struct timeval tv;
    char        test_byte;
    int         sel_res;
    int         tries = 0;

#define TESTBYTEVAL ((char) 199)

    /*
     * This static assertion verifies that we didn't mess up the calculations
     * involved in selecting maximum payload sizes for our UDP messages.
     * Because the only consequence of overrunning PGSTAT_MAX_MSG_SIZE would
     * be silent performance loss from fragmentation, it seems worth having a
     * compile-time cross-check that we didn't.
     */
    StaticAssertStmt(sizeof(PgStat_Msg) <= PGSTAT_MAX_MSG_SIZE,
                     "maximum stats message size exceeds PGSTAT_MAX_MSG_SIZE");

    /*
     * Create the UDP socket for sending and receiving statistic messages
     */
    hints.ai_flags = AI_PASSIVE;
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_DGRAM;
    hints.ai_protocol = 0;
    hints.ai_addrlen = 0;
    hints.ai_addr = NULL;
    hints.ai_canonname = NULL;
    hints.ai_next = NULL;
    ret = pg_getaddrinfo_all("localhost", NULL, &hints, &addrs);
    if (ret || !addrs)
    {
        ereport(LOG,
                (errmsg("could not resolve \"localhost\": %s",
                        gai_strerror(ret))));
        goto startup_failed;
    }

    /*
     * On some platforms, pg_getaddrinfo_all() may return multiple addresses
     * only one of which will actually work (eg, both IPv6 and IPv4 addresses
     * when kernel will reject IPv6).  Worse, the failure may occur at the
     * bind() or perhaps even connect() stage.  So we must loop through the
     * results till we find a working combination. We will generate LOG
     * messages, but no error, for bogus combinations.
     */
    for (addr = addrs; addr; addr = addr->ai_next)
    {
#ifdef HAVE_UNIX_SOCKETS
        /* Ignore AF_UNIX sockets, if any are returned. */
        if (addr->ai_family == AF_UNIX)
            continue;
#endif

        if (++tries > 1)
            ereport(LOG,
                    (errmsg("trying another address for the statistics collector")));

        /*
         * Create the socket.
         */
        if ((pgStatSock = socket(addr->ai_family, SOCK_DGRAM, 0)) == PGINVALID_SOCKET)
        {
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not create socket for statistics collector: %m")));
            continue;
        }

        /*
         * Bind it to a kernel assigned port on localhost and get the assigned
         * port via getsockname().
         */
        if (bind(pgStatSock, addr->ai_addr, addr->ai_addrlen) < 0)
        {
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not bind socket for statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        alen = sizeof(pgStatAddr);
        if (getsockname(pgStatSock, (struct sockaddr *) &pgStatAddr, &alen) < 0)
        {
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not get address of socket for statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        /*
         * Connect the socket to its own address.  This saves a few cycles by
         * not having to respecify the target address on every send. This also
         * provides a kernel-level check that only packets from this same
         * address will be received.
         */
        if (connect(pgStatSock, (struct sockaddr *) &pgStatAddr, alen) < 0)
        {
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not connect socket for statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        /*
         * Try to send and receive a one-byte test message on the socket. This
         * is to catch situations where the socket can be created but will not
         * actually pass data (for instance, because kernel packet filtering
         * rules prevent it).
         */
        test_byte = TESTBYTEVAL;

retry1:
        if (send(pgStatSock, &test_byte, 1, 0) != 1)
        {
            if (errno == EINTR)
                goto retry1;    /* if interrupted, just retry */
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not send test message on socket for statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        /*
         * There could possibly be a little delay before the message can be
         * received.  We arbitrarily allow up to half a second before deciding
         * it's broken.
         */
        for (;;)                /* need a loop to handle EINTR */
        {
            FD_ZERO(&rset);
            FD_SET(pgStatSock, &rset);

            tv.tv_sec = 0;
            tv.tv_usec = 500000;
            sel_res = select(pgStatSock + 1, &rset, NULL, NULL, &tv);
            if (sel_res >= 0 || errno != EINTR)
                break;
        }
        if (sel_res < 0)
        {
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("select() failed in statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }
        if (sel_res == 0 || !FD_ISSET(pgStatSock, &rset))
        {
            /*
             * This is the case we actually think is likely, so take pains to
             * give a specific message for it.
             *
             * errno will not be set meaningfully here, so don't use it.
             */
            ereport(LOG,
                    (errcode(ERRCODE_CONNECTION_FAILURE),
                     errmsg("test message did not get through on socket for statistics collector")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        test_byte++;            /* just make sure variable is changed */

retry2:
        if (recv(pgStatSock, &test_byte, 1, 0) != 1)
        {
            if (errno == EINTR)
                goto retry2;    /* if interrupted, just retry */
            ereport(LOG,
                    (errcode_for_socket_access(),
                     errmsg("could not receive test message on socket for statistics collector: %m")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        if (test_byte != TESTBYTEVAL)   /* strictly paranoia ... */
        {
            ereport(LOG,
                    (errcode(ERRCODE_INTERNAL_ERROR),
                     errmsg("incorrect test message transmission on socket for statistics collector")));
            closesocket(pgStatSock);
            pgStatSock = PGINVALID_SOCKET;
            continue;
        }

        /* If we get here, we have a working socket */
        break;
    }

    /* Did we find a working address? */
    if (!addr || pgStatSock == PGINVALID_SOCKET)
        goto startup_failed;

    /*
     * Set the socket to non-blocking IO.  This ensures that if the collector
     * falls behind, statistics messages will be discarded; backends won't
     * block waiting to send messages to the collector.
     */
    if (!pg_set_noblock(pgStatSock))
    {
        ereport(LOG,
                (errcode_for_socket_access(),
                 errmsg("could not set statistics collector socket to nonblocking mode: %m")));
        goto startup_failed;
    }

    /*
     * Try to ensure that the socket's receive buffer is at least
     * PGSTAT_MIN_RCVBUF bytes, so that it won't easily overflow and lose
     * data.  Use of UDP protocol means that we are willing to lose data under
     * heavy load, but we don't want it to happen just because of ridiculously
     * small default buffer sizes (such as 8KB on older Windows versions).
     */
    {
        int         old_rcvbuf;
        int         new_rcvbuf;
        ACCEPT_TYPE_ARG3 rcvbufsize = sizeof(old_rcvbuf);

        if (getsockopt(pgStatSock, SOL_SOCKET, SO_RCVBUF,
                       (char *) &old_rcvbuf, &rcvbufsize) < 0)
        {
            elog(LOG, "getsockopt(SO_RCVBUF) failed: %m");
            /* if we can't get existing size, always try to set it */
            old_rcvbuf = 0;
        }

        new_rcvbuf = PGSTAT_MIN_RCVBUF;
        if (old_rcvbuf < new_rcvbuf)
        {
            if (setsockopt(pgStatSock, SOL_SOCKET, SO_RCVBUF,
                           (char *) &new_rcvbuf, sizeof(new_rcvbuf)) < 0)
                elog(LOG, "setsockopt(SO_RCVBUF) failed: %m");
        }
    }

    pg_freeaddrinfo_all(hints.ai_family, addrs);

    return;

startup_failed:
    ereport(LOG,
            (errmsg("disabling statistics collector for lack of working socket")));

    if (addrs)
        pg_freeaddrinfo_all(hints.ai_family, addrs);

    if (pgStatSock != PGINVALID_SOCKET)
        closesocket(pgStatSock);
    pgStatSock = PGINVALID_SOCKET;

    /*
     * Adjust GUC variables to suppress useless activity, and for debugging
     * purposes (seeing track_counts off is a clue that we failed here). We
     * use PGC_S_OVERRIDE because there is no point in trying to turn it back
     * on from postgresql.conf without a restart.
     */
    SetConfigOption("track_counts", "off", PGC_INTERNAL, PGC_S_OVERRIDE);
}

void pgstat_init_function_usage	(	FunctionCallInfoData *	fcinfo,
		PgStat_FunctionCallUsage *	fcu
	)

Definition at line 1581 of file pgstat.c.

References HASHCTL::entrysize, PgStat_BackendFunctionEntry::f_counts, PgStat_FunctionCallUsage::f_start, PgStat_FunctionCounts::f_total_time, FunctionCallInfoData::flinfo, FmgrInfo::fn_oid, PgStat_FunctionCallUsage::fs, HASH_BLOBS, hash_create(), HASH_ELEM, HASH_ENTER, hash_search(), INSTR_TIME_SET_CURRENT, HASHCTL::keysize, MemSet, NULL, PGSTAT_FUNCTION_HASH_SIZE, PgStat_FunctionCallUsage::save_f_total_time, PgStat_FunctionCallUsage::save_total, and total_func_time.

Referenced by call_pltcl_start_proc(), EventTriggerInvoke(), ExecCallTriggerFunc(), ExecInterpExpr(), ExecMakeFunctionResultSet(), ExecMakeTableFunctionResult(), and fmgr_security_definer().

{
    PgStat_BackendFunctionEntry *htabent;
    bool        found;

    if (pgstat_track_functions <= fcinfo->flinfo->fn_stats)
    {
        /* stats not wanted */
        fcu->fs = NULL;
        return;
    }

    if (!pgStatFunctions)
    {
        /* First time through - initialize function stat table */
        HASHCTL     hash_ctl;

        memset(&hash_ctl, 0, sizeof(hash_ctl));
        hash_ctl.keysize = sizeof(Oid);
        hash_ctl.entrysize = sizeof(PgStat_BackendFunctionEntry);
        pgStatFunctions = hash_create("Function stat entries",
                                      PGSTAT_FUNCTION_HASH_SIZE,
                                      &hash_ctl,
                                      HASH_ELEM | HASH_BLOBS);
    }

    /* Get the stats entry for this function, create if necessary */
    htabent = hash_search(pgStatFunctions, &fcinfo->flinfo->fn_oid,
                          HASH_ENTER, &found);
    if (!found)
        MemSet(&htabent->f_counts, 0, sizeof(PgStat_FunctionCounts));

    fcu->fs = &htabent->f_counts;

    /* save stats for this function, later used to compensate for recursion */
    fcu->save_f_total_time = htabent->f_counts.f_total_time;

    /* save current backend-wide total time */
    fcu->save_total = total_func_time;

    /* get clock time as of function start */
    INSTR_TIME_SET_CURRENT(fcu->f_start);
}

void pgstat_initialize

(

void

)

Definition at line 2745 of file pgstat.c.

References Assert, InvalidBackendId, MaxBackends, MyAuxProcType, MyBackendId, NotAnAuxProcess, on_shmem_exit(), and pgstat_beshutdown_hook().

Referenced by AuxiliaryProcessMain(), and InitPostgres().

{
    /* Initialize MyBEEntry */
    if (MyBackendId != InvalidBackendId)
    {
        Assert(MyBackendId >= 1 && MyBackendId <= MaxBackends);
        MyBEEntry = &BackendStatusArray[MyBackendId - 1];
    }
    else
    {
        /* Must be an auxiliary process */
        Assert(MyAuxProcType != NotAnAuxProcess);

        /*
         * Assign the MyBEEntry for an auxiliary process.  Since it doesn't
         * have a BackendId, the slot is statically allocated based on the
         * auxiliary process type (MyAuxProcType).  Backends use slots indexed
         * in the range from 1 to MaxBackends (inclusive), so we use
         * MaxBackends + AuxBackendType + 1 as the index of the slot for an
         * auxiliary process.
         */
        MyBEEntry = &BackendStatusArray[MaxBackends + MyAuxProcType];
    }

    /* Set up a process-exit hook to clean up */
    on_shmem_exit(pgstat_beshutdown_hook, 0);
}

void pgstat_initstats

(

Relation

rel

)

Definition at line 1710 of file pgstat.c.

References get_tabstat_entry(), NULL, PGINVALID_SOCKET, RelationData::pgstat_info, pgstat_track_counts, pgStatSock, RelationData::rd_id, RelationData::rd_rel, RELKIND_INDEX, RELKIND_MATVIEW, RELKIND_RELATION, RELKIND_SEQUENCE, RELKIND_TOASTVALUE, and PgStat_TableStatus::t_id.

Referenced by relation_open(), and try_relation_open().

{
    Oid         rel_id = rel->rd_id;
    char        relkind = rel->rd_rel->relkind;

    /* We only count stats for things that have storage */
    if (!(relkind == RELKIND_RELATION ||
          relkind == RELKIND_MATVIEW ||
          relkind == RELKIND_INDEX ||
          relkind == RELKIND_TOASTVALUE ||
          relkind == RELKIND_SEQUENCE))
    {
        rel->pgstat_info = NULL;
        return;
    }

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
    {
        /* We're not counting at all */
        rel->pgstat_info = NULL;
        return;
    }

    /*
     * If we already set up this relation in the current transaction, nothing
     * to do.
     */
    if (rel->pgstat_info != NULL &&
        rel->pgstat_info->t_id == rel_id)
        return;

    /* Else find or make the PgStat_TableStatus entry, and update link */
    rel->pgstat_info = get_tabstat_entry(rel_id, rel->rd_rel->relisshared);
}

void pgstat_ping

(

void

)

Definition at line 1546 of file pgstat.c.

References PgStat_MsgDummy::m_hdr, PGINVALID_SOCKET, PGSTAT_MTYPE_DUMMY, pgstat_send(), pgstat_setheader(), and pgStatSock.

{
    PgStat_MsgDummy msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_DUMMY);
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_progress_end_command

(

void

)

Definition at line 3140 of file pgstat.c.

References InvalidOid, MyBEEntry, pgstat_increment_changecount_after, pgstat_increment_changecount_before, pgstat_track_activities, PROGRESS_COMMAND_INVALID, PgBackendStatus::st_progress_command, and PgBackendStatus::st_progress_command_target.

Referenced by AbortSubTransaction(), AbortTransaction(), and lazy_vacuum_rel().

{
    volatile PgBackendStatus *beentry = MyBEEntry;

    if (!beentry)
        return;
    if (!pgstat_track_activities
        && beentry->st_progress_command == PROGRESS_COMMAND_INVALID)
        return;

    pgstat_increment_changecount_before(beentry);
    beentry->st_progress_command = PROGRESS_COMMAND_INVALID;
    beentry->st_progress_command_target = InvalidOid;
    pgstat_increment_changecount_after(beentry);
}

void pgstat_progress_start_command	(	ProgressCommandType	cmdtype,
		Oid	relid
	)

Definition at line 3068 of file pgstat.c.

References MemSet, MyBEEntry, pgstat_increment_changecount_after, pgstat_increment_changecount_before, pgstat_track_activities, PgBackendStatus::st_progress_command, PgBackendStatus::st_progress_command_target, and PgBackendStatus::st_progress_param.

Referenced by lazy_vacuum_rel().

{
    volatile PgBackendStatus *beentry = MyBEEntry;

    if (!beentry || !pgstat_track_activities)
        return;

    pgstat_increment_changecount_before(beentry);
    beentry->st_progress_command = cmdtype;
    beentry->st_progress_command_target = relid;
    MemSet(&beentry->st_progress_param, 0, sizeof(beentry->st_progress_param));
    pgstat_increment_changecount_after(beentry);
}

void pgstat_progress_update_multi_param	(	int	nparam,
		const int *	index,
		const int64 *	val
	)

Definition at line 3111 of file pgstat.c.

References Assert, i, MyBEEntry, pgstat_increment_changecount_after, pgstat_increment_changecount_before, PGSTAT_NUM_PROGRESS_PARAM, pgstat_track_activities, and PgBackendStatus::st_progress_param.

Referenced by lazy_scan_heap().

{
    volatile PgBackendStatus *beentry = MyBEEntry;
    int         i;

    if (!beentry || !pgstat_track_activities || nparam == 0)
        return;

    pgstat_increment_changecount_before(beentry);

    for (i = 0; i < nparam; ++i)
    {
        Assert(index[i] >= 0 && index[i] < PGSTAT_NUM_PROGRESS_PARAM);

        beentry->st_progress_param[index[i]] = val[i];
    }

    pgstat_increment_changecount_after(beentry);
}

void pgstat_progress_update_param	(	int	index,
		int64	val
	)

Definition at line 3089 of file pgstat.c.

References Assert, MyBEEntry, pgstat_increment_changecount_after, pgstat_increment_changecount_before, PGSTAT_NUM_PROGRESS_PARAM, pgstat_track_activities, PgBackendStatus::st_progress_param, and val.

Referenced by lazy_record_dead_tuple(), lazy_scan_heap(), lazy_truncate_heap(), lazy_vacuum_page(), and lazy_vacuum_rel().

{
    volatile PgBackendStatus *beentry = MyBEEntry;

    Assert(index >= 0 && index < PGSTAT_NUM_PROGRESS_PARAM);

    if (!beentry || !pgstat_track_activities)
        return;

    pgstat_increment_changecount_before(beentry);
    beentry->st_progress_param[index] = val;
    pgstat_increment_changecount_after(beentry);
}

void pgstat_report_activity	(	BackendState	state,
		const char *	cmd_str
	)

Definition at line 2994 of file pgstat.c.

References GetCurrentStatementStartTimestamp(), GetCurrentTimestamp(), MyBEEntry, MyProc, NULL, pg_mbcliplen(), pgstat_increment_changecount_after, pgstat_increment_changecount_before, pgstat_track_activities, pgstat_track_activity_query_size, PgBackendStatus::st_activity, PgBackendStatus::st_activity_start_timestamp, PgBackendStatus::st_state, PgBackendStatus::st_state_start_timestamp, PgBackendStatus::st_xact_start_timestamp, STATE_DISABLED, and PGPROC::wait_event_info.

Referenced by apply_handle_begin(), apply_handle_commit(), autovac_report_activity(), autovac_report_workitem(), exec_bind_message(), exec_execute_message(), exec_parse_message(), exec_simple_query(), initialize_worker_spi(), LogicalRepApplyLoop(), ParallelQueryMain(), PostgresMain(), and WalSndLoop().

{
    volatile PgBackendStatus *beentry = MyBEEntry;
    TimestampTz start_timestamp;
    TimestampTz current_timestamp;
    int         len = 0;

    TRACE_POSTGRESQL_STATEMENT_STATUS(cmd_str);

    if (!beentry)
        return;

    if (!pgstat_track_activities)
    {
        if (beentry->st_state != STATE_DISABLED)
        {
            volatile PGPROC *proc = MyProc;

            /*
             * track_activities is disabled, but we last reported a
             * non-disabled state.  As our final update, change the state and
             * clear fields we will not be updating anymore.
             */
            pgstat_increment_changecount_before(beentry);
            beentry->st_state = STATE_DISABLED;
            beentry->st_state_start_timestamp = 0;
            beentry->st_activity[0] = '\0';
            beentry->st_activity_start_timestamp = 0;
            /* st_xact_start_timestamp and wait_event_info are also disabled */
            beentry->st_xact_start_timestamp = 0;
            proc->wait_event_info = 0;
            pgstat_increment_changecount_after(beentry);
        }
        return;
    }

    /*
     * To minimize the time spent modifying the entry, fetch all the needed
     * data first.
     */
    start_timestamp = GetCurrentStatementStartTimestamp();
    if (cmd_str != NULL)
    {
        len = pg_mbcliplen(cmd_str, strlen(cmd_str),
                           pgstat_track_activity_query_size - 1);
    }
    current_timestamp = GetCurrentTimestamp();

    /*
     * Now update the status entry
     */
    pgstat_increment_changecount_before(beentry);

    beentry->st_state = state;
    beentry->st_state_start_timestamp = current_timestamp;

    if (cmd_str != NULL)
    {
        memcpy((char *) beentry->st_activity, cmd_str, len);
        beentry->st_activity[len] = '\0';
        beentry->st_activity_start_timestamp = start_timestamp;
    }

    pgstat_increment_changecount_after(beentry);
}

void pgstat_report_analyze	(	Relation	rel,
		PgStat_Counter	livetuples,
		PgStat_Counter	deadtuples,
		bool	resetcounter
	)

Definition at line 1433 of file pgstat.c.

References GetCurrentTimestamp(), InvalidOid, IsAutoVacuumWorkerProcess(), PgStat_MsgAnalyze::m_analyzetime, PgStat_MsgAnalyze::m_autovacuum, PgStat_MsgAnalyze::m_databaseid, PgStat_MsgAnalyze::m_dead_tuples, PgStat_MsgAnalyze::m_hdr, PgStat_MsgAnalyze::m_live_tuples, PgStat_MsgAnalyze::m_resetcounter, PgStat_MsgAnalyze::m_tableoid, Max, MyDatabaseId, NULL, PGINVALID_SOCKET, RelationData::pgstat_info, PGSTAT_MTYPE_ANALYZE, pgstat_send(), pgstat_setheader(), pgstat_track_counts, pgStatSock, RelationData::rd_rel, RelationGetRelid, PgStat_TableStatus::t_counts, PgStat_TableCounts::t_delta_dead_tuples, PgStat_TableStatus::trans, trans, PgStat_TableXactStatus::tuples_deleted, PgStat_TableXactStatus::tuples_inserted, PgStat_TableXactStatus::tuples_updated, and PgStat_TableXactStatus::upper.

Referenced by do_analyze_rel().

{
    PgStat_MsgAnalyze msg;

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
        return;

    /*
     * Unlike VACUUM, ANALYZE might be running inside a transaction that has
     * already inserted and/or deleted rows in the target table. ANALYZE will
     * have counted such rows as live or dead respectively. Because we will
     * report our counts of such rows at transaction end, we should subtract
     * off these counts from what we send to the collector now, else they'll
     * be double-counted after commit.  (This approach also ensures that the
     * collector ends up with the right numbers if we abort instead of
     * committing.)
     */
    if (rel->pgstat_info != NULL)
    {
        PgStat_TableXactStatus *trans;

        for (trans = rel->pgstat_info->trans; trans; trans = trans->upper)
        {
            livetuples -= trans->tuples_inserted - trans->tuples_deleted;
            deadtuples -= trans->tuples_updated + trans->tuples_deleted;
        }
        /* count stuff inserted by already-aborted subxacts, too */
        deadtuples -= rel->pgstat_info->t_counts.t_delta_dead_tuples;
        /* Since ANALYZE's counts are estimates, we could have underflowed */
        livetuples = Max(livetuples, 0);
        deadtuples = Max(deadtuples, 0);
    }

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_ANALYZE);
    msg.m_databaseid = rel->rd_rel->relisshared ? InvalidOid : MyDatabaseId;
    msg.m_tableoid = RelationGetRelid(rel);
    msg.m_autovacuum = IsAutoVacuumWorkerProcess();
    msg.m_resetcounter = resetcounter;
    msg.m_analyzetime = GetCurrentTimestamp();
    msg.m_live_tuples = livetuples;
    msg.m_dead_tuples = deadtuples;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_report_appname

(

const char *

appname

)

Definition at line 3163 of file pgstat.c.

References MyBEEntry, NAMEDATALEN, pg_mbcliplen(), pgstat_increment_changecount_after, pgstat_increment_changecount_before, and PgBackendStatus::st_appname.

Referenced by assign_application_name(), and pgstat_bestart().

{
    volatile PgBackendStatus *beentry = MyBEEntry;
    int         len;

    if (!beentry)
        return;

    /* This should be unnecessary if GUC did its job, but be safe */
    len = pg_mbcliplen(appname, strlen(appname), NAMEDATALEN - 1);

    /*
     * Update my status entry, following the protocol of bumping
     * st_changecount before and after.  We use a volatile pointer here to
     * ensure the compiler doesn't try to get cute.
     */
    pgstat_increment_changecount_before(beentry);

    memcpy((char *) beentry->st_appname, appname, len);
    beentry->st_appname[len] = '\0';

    pgstat_increment_changecount_after(beentry);
}

void pgstat_report_autovac

(

Oid

dboid

)

Definition at line 1383 of file pgstat.c.

References GetCurrentTimestamp(), PgStat_MsgAutovacStart::m_databaseid, PgStat_MsgAutovacStart::m_hdr, PgStat_MsgAutovacStart::m_start_time, PGINVALID_SOCKET, PGSTAT_MTYPE_AUTOVAC_START, pgstat_send(), pgstat_setheader(), and pgStatSock.

Referenced by AutoVacWorkerMain().

{
    PgStat_MsgAutovacStart msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_AUTOVAC_START);
    msg.m_databaseid = dboid;
    msg.m_start_time = GetCurrentTimestamp();

    pgstat_send(&msg, sizeof(msg));
}

void pgstat_report_deadlock

(

void

)

Definition at line 1506 of file pgstat.c.

References PgStat_MsgDeadlock::m_databaseid, PgStat_MsgDeadlock::m_hdr, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_DEADLOCK, pgstat_send(), pgstat_setheader(), pgstat_track_counts, and pgStatSock.

Referenced by DeadLockReport().

{
    PgStat_MsgDeadlock msg;

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_DEADLOCK);
    msg.m_databaseid = MyDatabaseId;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_report_recovery_conflict

(

int

reason

)

Definition at line 1486 of file pgstat.c.

References PgStat_MsgRecoveryConflict::m_databaseid, PgStat_MsgRecoveryConflict::m_hdr, PgStat_MsgRecoveryConflict::m_reason, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_RECOVERYCONFLICT, pgstat_send(), pgstat_setheader(), pgstat_track_counts, and pgStatSock.

Referenced by ProcessInterrupts().

{
    PgStat_MsgRecoveryConflict msg;

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_RECOVERYCONFLICT);
    msg.m_databaseid = MyDatabaseId;
    msg.m_reason = reason;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_report_stat

(

bool

force

)

Definition at line 812 of file pgstat.c.

References Assert, GetCurrentTransactionStopTimestamp(), hash_destroy(), have_function_stats, i, InvalidOid, PgStat_MsgTabstat::m_databaseid, PgStat_MsgTabstat::m_entry, PgStat_MsgTabstat::m_nentries, MemSet, MyDatabaseId, now(), NULL, PGSTAT_NUM_TABENTRIES, pgstat_send_funcstats(), pgstat_send_tabstat(), PGSTAT_STAT_INTERVAL, pgStatXactCommit, pgStatXactRollback, PgStat_TableStatus::t_counts, PgStat_TableEntry::t_counts, PgStat_TableStatus::t_id, PgStat_TableEntry::t_id, PgStat_TableStatus::t_shared, TimestampDifferenceExceeds(), PgStat_TableStatus::trans, TabStatusArray::tsa_entries, TabStatusArray::tsa_next, and TabStatusArray::tsa_used.

Referenced by apply_handle_commit(), LogicalRepSyncTableStart(), pg_attribute_noreturn(), pgstat_beshutdown_hook(), PostgresMain(), and process_syncing_tables_for_apply().

{
    /* we assume this inits to all zeroes: */
    static const PgStat_TableCounts all_zeroes;
    static TimestampTz last_report = 0;

    TimestampTz now;
    PgStat_MsgTabstat regular_msg;
    PgStat_MsgTabstat shared_msg;
    TabStatusArray *tsa;
    int         i;

    /* Don't expend a clock check if nothing to do */
    if ((pgStatTabList == NULL || pgStatTabList->tsa_used == 0) &&
        pgStatXactCommit == 0 && pgStatXactRollback == 0 &&
        !have_function_stats)
        return;

    /*
     * Don't send a message unless it's been at least PGSTAT_STAT_INTERVAL
     * msec since we last sent one, or the caller wants to force stats out.
     */
    now = GetCurrentTransactionStopTimestamp();
    if (!force &&
        !TimestampDifferenceExceeds(last_report, now, PGSTAT_STAT_INTERVAL))
        return;
    last_report = now;

    /*
     * Destroy pgStatTabHash before we start invalidating PgStat_TableEntry
     * entries it points to.  (Should we fail partway through the loop below,
     * it's okay to have removed the hashtable already --- the only
     * consequence is we'd get multiple entries for the same table in the
     * pgStatTabList, and that's safe.)
     */
    if (pgStatTabHash)
        hash_destroy(pgStatTabHash);
    pgStatTabHash = NULL;

    /*
     * Scan through the TabStatusArray struct(s) to find tables that actually
     * have counts, and build messages to send.  We have to separate shared
     * relations from regular ones because the databaseid field in the message
     * header has to depend on that.
     */
    regular_msg.m_databaseid = MyDatabaseId;
    shared_msg.m_databaseid = InvalidOid;
    regular_msg.m_nentries = 0;
    shared_msg.m_nentries = 0;

    for (tsa = pgStatTabList; tsa != NULL; tsa = tsa->tsa_next)
    {
        for (i = 0; i < tsa->tsa_used; i++)
        {
            PgStat_TableStatus *entry = &tsa->tsa_entries[i];
            PgStat_MsgTabstat *this_msg;
            PgStat_TableEntry *this_ent;

            /* Shouldn't have any pending transaction-dependent counts */
            Assert(entry->trans == NULL);

            /*
             * Ignore entries that didn't accumulate any actual counts, such
             * as indexes that were opened by the planner but not used.
             */
            if (memcmp(&entry->t_counts, &all_zeroes,
                       sizeof(PgStat_TableCounts)) == 0)
                continue;

            /*
             * OK, insert data into the appropriate message, and send if full.
             */
            this_msg = entry->t_shared ? &shared_msg : &regular_msg;
            this_ent = &this_msg->m_entry[this_msg->m_nentries];
            this_ent->t_id = entry->t_id;
            memcpy(&this_ent->t_counts, &entry->t_counts,
                   sizeof(PgStat_TableCounts));
            if (++this_msg->m_nentries >= PGSTAT_NUM_TABENTRIES)
            {
                pgstat_send_tabstat(this_msg);
                this_msg->m_nentries = 0;
            }
        }
        /* zero out TableStatus structs after use */
        MemSet(tsa->tsa_entries, 0,
               tsa->tsa_used * sizeof(PgStat_TableStatus));
        tsa->tsa_used = 0;
    }

    /*
     * Send partial messages.  Make sure that any pending xact commit/abort
     * gets counted, even if there are no table stats to send.
     */
    if (regular_msg.m_nentries > 0 ||
        pgStatXactCommit > 0 || pgStatXactRollback > 0)
        pgstat_send_tabstat(&regular_msg);
    if (shared_msg.m_nentries > 0)
        pgstat_send_tabstat(&shared_msg);

    /* Now, send function statistics */
    pgstat_send_funcstats();
}

void pgstat_report_tempfile

(

size_t

filesize

)

Definition at line 1525 of file pgstat.c.

References PgStat_MsgTempFile::m_databaseid, PgStat_MsgTempFile::m_filesize, PgStat_MsgTempFile::m_hdr, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_TEMPFILE, pgstat_send(), pgstat_setheader(), pgstat_track_counts, and pgStatSock.

Referenced by FileClose().

{
    PgStat_MsgTempFile msg;

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_TEMPFILE);
    msg.m_databaseid = MyDatabaseId;
    msg.m_filesize = filesize;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_report_vacuum	(	Oid	tableoid,
		bool	shared,
		PgStat_Counter	livetuples,
		PgStat_Counter	deadtuples
	)

Definition at line 1405 of file pgstat.c.

References GetCurrentTimestamp(), InvalidOid, IsAutoVacuumWorkerProcess(), PgStat_MsgVacuum::m_autovacuum, PgStat_MsgVacuum::m_databaseid, PgStat_MsgVacuum::m_dead_tuples, PgStat_MsgVacuum::m_hdr, PgStat_MsgVacuum::m_live_tuples, PgStat_MsgVacuum::m_tableoid, PgStat_MsgVacuum::m_vacuumtime, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_VACUUM, pgstat_send(), pgstat_setheader(), pgstat_track_counts, and pgStatSock.

Referenced by lazy_vacuum_rel().

{
    PgStat_MsgVacuum msg;

    if (pgStatSock == PGINVALID_SOCKET || !pgstat_track_counts)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_VACUUM);
    msg.m_databaseid = shared ? InvalidOid : MyDatabaseId;
    msg.m_tableoid = tableoid;
    msg.m_autovacuum = IsAutoVacuumWorkerProcess();
    msg.m_vacuumtime = GetCurrentTimestamp();
    msg.m_live_tuples = livetuples;
    msg.m_dead_tuples = deadtuples;
    pgstat_send(&msg, sizeof(msg));
}

static void pgstat_report_wait_end ( void  )

inlinestatic

Definition at line 1235 of file pgstat.h.

References MyProc, pgstat_track_activities, and PGPROC::wait_event_info.

Referenced by AbortSubTransaction(), AbortTransaction(), AddToDataDirLockFile(), ApplyLogicalMappingFile(), assign_xlog_sync_method(), AutoVacLauncherMain(), BackgroundWriterMain(), BootStrapXLOG(), CheckpointerMain(), CheckPointLogicalRewriteHeap(), copy_file(), CreateLockFile(), dsm_impl_mmap(), FilePrefetch(), FileRead(), FileSync(), FileTruncate(), FileWrite(), FileWriteback(), heap_xlog_logical_rewrite(), load_relmap_file(), LWLockReportWaitEnd(), ProcArrayGroupClearXid(), ReadControlFile(), ReadTwoPhaseFile(), RecheckDataDirLockFile(), RecreateTwoPhaseFile(), ReorderBufferRestoreChanges(), ReorderBufferSerializeChange(), RestoreSlotFromDisk(), SaveSlotToPath(), SendTimeLineHistory(), ShutdownAuxiliaryProcess(), SimpleLruFlush(), SlruPhysicalReadPage(), SlruPhysicalWritePage(), SnapBuildRestore(), SnapBuildSerialize(), UpdateControlFile(), WaitEventSetWait(), WalSndErrorCleanup(), WalWriterMain(), write_relmap_file(), WriteControlFile(), writeTimeLineHistory(), writeTimeLineHistoryFile(), XLogFileCopy(), XLogFileInit(), XLogPageRead(), XLogRead(), and XLogWrite().

{
    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;
}

static void pgstat_report_wait_start ( uint32  wait_event_info )

inlinestatic

Definition at line 1211 of file pgstat.h.

References MyProc, pgstat_track_activities, and PGPROC::wait_event_info.

Referenced by AddToDataDirLockFile(), ApplyLogicalMappingFile(), assign_xlog_sync_method(), BootStrapXLOG(), CheckPointLogicalRewriteHeap(), copy_file(), CreateLockFile(), dsm_impl_mmap(), FilePrefetch(), FileRead(), FileSync(), FileTruncate(), FileWrite(), FileWriteback(), heap_xlog_logical_rewrite(), load_relmap_file(), LWLockReportWaitStart(), ProcArrayGroupClearXid(), ReadControlFile(), ReadTwoPhaseFile(), RecheckDataDirLockFile(), RecreateTwoPhaseFile(), ReorderBufferRestoreChanges(), ReorderBufferSerializeChange(), RestoreSlotFromDisk(), SaveSlotToPath(), SendTimeLineHistory(), SimpleLruFlush(), SlruPhysicalReadPage(), SlruPhysicalWritePage(), SnapBuildRestore(), SnapBuildSerialize(), UpdateControlFile(), WaitEventSetWait(), write_relmap_file(), WriteControlFile(), writeTimeLineHistory(), writeTimeLineHistoryFile(), XLogFileCopy(), XLogFileInit(), XLogPageRead(), XLogRead(), and XLogWrite().

{
    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;
}

void pgstat_report_xact_timestamp

(

TimestampTz

tstamp

)

Definition at line 3192 of file pgstat.c.

References MyBEEntry, pgstat_increment_changecount_after, pgstat_increment_changecount_before, pgstat_track_activities, and PgBackendStatus::st_xact_start_timestamp.

Referenced by AbortTransaction(), CommitTransaction(), PrepareTransaction(), and StartTransaction().

{
    volatile PgBackendStatus *beentry = MyBEEntry;

    if (!pgstat_track_activities || !beentry)
        return;

    /*
     * Update my status entry, following the protocol of bumping
     * st_changecount before and after.  We use a volatile pointer here to
     * ensure the compiler doesn't try to get cute.
     */
    pgstat_increment_changecount_before(beentry);
    beentry->st_xact_start_timestamp = tstamp;
    pgstat_increment_changecount_after(beentry);
}

void pgstat_reset_all

(

void

)

Definition at line 685 of file pgstat.c.

References pgstat_reset_remove_files(), pgstat_stat_directory, and PGSTAT_STAT_PERMANENT_DIRECTORY.

Referenced by StartupXLOG().

{
    pgstat_reset_remove_files(pgstat_stat_directory);
    pgstat_reset_remove_files(PGSTAT_STAT_PERMANENT_DIRECTORY);
}

void pgstat_reset_counters

(

void

)

Definition at line 1306 of file pgstat.c.

References PgStat_MsgResetcounter::m_databaseid, PgStat_MsgResetcounter::m_hdr, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_RESETCOUNTER, pgstat_send(), pgstat_setheader(), and pgStatSock.

Referenced by pg_stat_reset().

{
    PgStat_MsgResetcounter msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_RESETCOUNTER);
    msg.m_databaseid = MyDatabaseId;
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_reset_shared_counters

(

const char *

)

Definition at line 1328 of file pgstat.c.

References ereport, errcode(), errhint(), errmsg(), ERROR, PgStat_MsgResetsharedcounter::m_hdr, PgStat_MsgResetsharedcounter::m_resettarget, PGINVALID_SOCKET, PGSTAT_MTYPE_RESETSHAREDCOUNTER, pgstat_send(), pgstat_setheader(), pgStatSock, RESET_ARCHIVER, and RESET_BGWRITER.

Referenced by pg_stat_reset_shared().

{
    PgStat_MsgResetsharedcounter msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    if (strcmp(target, "archiver") == 0)
        msg.m_resettarget = RESET_ARCHIVER;
    else if (strcmp(target, "bgwriter") == 0)
        msg.m_resettarget = RESET_BGWRITER;
    else
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                 errmsg("unrecognized reset target: \"%s\"", target),
                 errhint("Target must be \"archiver\" or \"bgwriter\".")));

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_RESETSHAREDCOUNTER);
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_reset_single_counter	(	Oid	objectid,
		PgStat_Single_Reset_Type	type
	)

Definition at line 1359 of file pgstat.c.

References PgStat_MsgResetsinglecounter::m_databaseid, PgStat_MsgResetsinglecounter::m_hdr, PgStat_MsgResetsinglecounter::m_objectid, PgStat_MsgResetsinglecounter::m_resettype, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_RESETSINGLECOUNTER, pgstat_send(), pgstat_setheader(), and pgStatSock.

Referenced by pg_stat_reset_single_function_counters(), and pg_stat_reset_single_table_counters().

{
    PgStat_MsgResetsinglecounter msg;

    if (pgStatSock == PGINVALID_SOCKET)
        return;

    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_RESETSINGLECOUNTER);
    msg.m_databaseid = MyDatabaseId;
    msg.m_resettype = type;
    msg.m_objectid = objoid;

    pgstat_send(&msg, sizeof(msg));
}

void pgstat_send_archiver	(	const char *	xlog,
		bool	failed
	)

Definition at line 4130 of file pgstat.c.

References GetCurrentTimestamp(), PgStat_MsgArchiver::m_failed, PgStat_MsgArchiver::m_hdr, PgStat_MsgArchiver::m_timestamp, PgStat_MsgArchiver::m_xlog, PGSTAT_MTYPE_ARCHIVER, pgstat_send(), pgstat_setheader(), and StrNCpy.

Referenced by pgarch_ArchiverCopyLoop().

{
    PgStat_MsgArchiver msg;

    /*
     * Prepare and send the message
     */
    pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_ARCHIVER);
    msg.m_failed = failed;
    StrNCpy(msg.m_xlog, xlog, sizeof(msg.m_xlog));
    msg.m_timestamp = GetCurrentTimestamp();
    pgstat_send(&msg, sizeof(msg));
}

void pgstat_send_bgwriter

(

void

)

Definition at line 4151 of file pgstat.c.

References PgStat_MsgBgWriter::m_hdr, MemSet, PGSTAT_MTYPE_BGWRITER, pgstat_send(), and pgstat_setheader().

Referenced by BackgroundWriterMain(), CheckpointerMain(), and CheckpointWriteDelay().

{
    /* We assume this initializes to zeroes */
    static const PgStat_MsgBgWriter all_zeroes;

    /*
     * This function can be called even if nothing at all has happened. In
     * this case, avoi