init
This commit is contained in:
blue-lemon0104
873
pg_include/pgstat.h
Executable file
873
pg_include/pgstat.h
Executable file
@@ -0,0 +1,873 @@
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/* ----------
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* pgstat.h
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*
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* Definitions for the PostgreSQL statistics collector daemon.
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*
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* Copyright (c) 2001-2012, PostgreSQL Global Development Group
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*
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* src/include/pgstat.h
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* ----------
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*/
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#ifndef PGSTAT_H
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#define PGSTAT_H
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#include "datatype/timestamp.h"
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#include "fmgr.h"
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#include "libpq/pqcomm.h"
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#include "portability/instr_time.h"
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#include "utils/hsearch.h"
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#include "utils/relcache.h"
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/* Values for track_functions GUC variable --- order is significant! */
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typedef enum TrackFunctionsLevel
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{
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TRACK_FUNC_OFF,
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TRACK_FUNC_PL,
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TRACK_FUNC_ALL
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} TrackFunctionsLevel;
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/* ----------
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* The types of backend -> collector messages
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* ----------
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*/
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typedef enum StatMsgType
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{
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PGSTAT_MTYPE_DUMMY,
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PGSTAT_MTYPE_INQUIRY,
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PGSTAT_MTYPE_TABSTAT,
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PGSTAT_MTYPE_TABPURGE,
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PGSTAT_MTYPE_DROPDB,
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PGSTAT_MTYPE_RESETCOUNTER,
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PGSTAT_MTYPE_RESETSHAREDCOUNTER,
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PGSTAT_MTYPE_RESETSINGLECOUNTER,
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PGSTAT_MTYPE_AUTOVAC_START,
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PGSTAT_MTYPE_VACUUM,
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PGSTAT_MTYPE_ANALYZE,
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PGSTAT_MTYPE_BGWRITER,
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PGSTAT_MTYPE_FUNCSTAT,
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PGSTAT_MTYPE_FUNCPURGE,
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PGSTAT_MTYPE_RECOVERYCONFLICT,
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PGSTAT_MTYPE_TEMPFILE,
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PGSTAT_MTYPE_DEADLOCK
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} StatMsgType;
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/* ----------
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* The data type used for counters.
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* ----------
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*/
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typedef int64 PgStat_Counter;
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/* ----------
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* PgStat_TableCounts The actual per-table counts kept by a backend
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*
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* This struct should contain only actual event counters, because we memcmp
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* it against zeroes to detect whether there are any counts to transmit.
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* It is a component of PgStat_TableStatus (within-backend state) and
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* PgStat_TableEntry (the transmitted message format).
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*
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* Note: for a table, tuples_returned is the number of tuples successfully
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* fetched by heap_getnext, while tuples_fetched is the number of tuples
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* successfully fetched by heap_fetch under the control of bitmap indexscans.
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* For an index, tuples_returned is the number of index entries returned by
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* the index AM, while tuples_fetched is the number of tuples successfully
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* fetched by heap_fetch under the control of simple indexscans for this index.
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*
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* tuples_inserted/updated/deleted/hot_updated count attempted actions,
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* regardless of whether the transaction committed. delta_live_tuples,
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* delta_dead_tuples, and changed_tuples are set depending on commit or abort.
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* Note that delta_live_tuples and delta_dead_tuples can be negative!
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* ----------
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*/
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typedef struct PgStat_TableCounts
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{
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PgStat_Counter t_numscans;
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PgStat_Counter t_tuples_returned;
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PgStat_Counter t_tuples_fetched;
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PgStat_Counter t_tuples_inserted;
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PgStat_Counter t_tuples_updated;
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PgStat_Counter t_tuples_deleted;
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PgStat_Counter t_tuples_hot_updated;
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PgStat_Counter t_delta_live_tuples;
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PgStat_Counter t_delta_dead_tuples;
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PgStat_Counter t_changed_tuples;
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PgStat_Counter t_blocks_fetched;
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PgStat_Counter t_blocks_hit;
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} PgStat_TableCounts;
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/* Possible targets for resetting cluster-wide shared values */
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typedef enum PgStat_Shared_Reset_Target
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{
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RESET_BGWRITER
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} PgStat_Shared_Reset_Target;
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/* Possible object types for resetting single counters */
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typedef enum PgStat_Single_Reset_Type
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{
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RESET_TABLE,
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RESET_FUNCTION
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} PgStat_Single_Reset_Type;
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/* ------------------------------------------------------------
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* Structures kept in backend local memory while accumulating counts
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* ------------------------------------------------------------
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*/
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/* ----------
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* PgStat_TableStatus Per-table status within a backend
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*
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* Many of the event counters are nontransactional, ie, we count events
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* in committed and aborted transactions alike. For these, we just count
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* directly in the PgStat_TableStatus. However, delta_live_tuples,
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* delta_dead_tuples, and changed_tuples must be derived from event counts
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* with awareness of whether the transaction or subtransaction committed or
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* aborted. Hence, we also keep a stack of per-(sub)transaction status
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* records for every table modified in the current transaction. At commit
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* or abort, we propagate tuples_inserted/updated/deleted up to the
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* parent subtransaction level, or out to the parent PgStat_TableStatus,
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* as appropriate.
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* ----------
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*/
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typedef struct PgStat_TableStatus
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{
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Oid t_id; /* table's OID */
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bool t_shared; /* is it a shared catalog? */
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struct PgStat_TableXactStatus *trans; /* lowest subxact's counts */
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PgStat_TableCounts t_counts; /* event counts to be sent */
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} PgStat_TableStatus;
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/* ----------
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* PgStat_TableXactStatus Per-table, per-subtransaction status
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* ----------
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*/
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typedef struct PgStat_TableXactStatus
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{
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PgStat_Counter tuples_inserted; /* tuples inserted in (sub)xact */
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PgStat_Counter tuples_updated; /* tuples updated in (sub)xact */
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PgStat_Counter tuples_deleted; /* tuples deleted in (sub)xact */
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int nest_level; /* subtransaction nest level */
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/* links to other structs for same relation: */
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struct PgStat_TableXactStatus *upper; /* next higher subxact if any */
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PgStat_TableStatus *parent; /* per-table status */
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/* structs of same subxact level are linked here: */
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struct PgStat_TableXactStatus *next; /* next of same subxact */
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} PgStat_TableXactStatus;
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/* ------------------------------------------------------------
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* Message formats follow
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* ------------------------------------------------------------
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*/
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/* ----------
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* PgStat_MsgHdr The common message header
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* ----------
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*/
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typedef struct PgStat_MsgHdr
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{
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StatMsgType m_type;
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int m_size;
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} PgStat_MsgHdr;
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/* ----------
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* Space available in a message. This will keep the UDP packets below 1K,
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* which should fit unfragmented into the MTU of the lo interface on most
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* platforms. Does anybody care for platforms where it doesn't?
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* ----------
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*/
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#define PGSTAT_MSG_PAYLOAD (1000 - sizeof(PgStat_MsgHdr))
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/* ----------
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* PgStat_MsgDummy A dummy message, ignored by the collector
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* ----------
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*/
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typedef struct PgStat_MsgDummy
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{
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PgStat_MsgHdr m_hdr;
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} PgStat_MsgDummy;
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/* ----------
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* PgStat_MsgInquiry Sent by a backend to ask the collector
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* to write the stats file.
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* ----------
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*/
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typedef struct PgStat_MsgInquiry
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{
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PgStat_MsgHdr m_hdr;
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TimestampTz inquiry_time; /* minimum acceptable file timestamp */
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} PgStat_MsgInquiry;
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/* ----------
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* PgStat_TableEntry Per-table info in a MsgTabstat
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* ----------
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*/
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typedef struct PgStat_TableEntry
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{
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Oid t_id;
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PgStat_TableCounts t_counts;
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} PgStat_TableEntry;
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/* ----------
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* PgStat_MsgTabstat Sent by the backend to report table
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* and buffer access statistics.
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* ----------
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*/
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#define PGSTAT_NUM_TABENTRIES \
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((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - 3 * sizeof(int)) \
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/ sizeof(PgStat_TableEntry))
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typedef struct PgStat_MsgTabstat
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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int m_nentries;
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int m_xact_commit;
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int m_xact_rollback;
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PgStat_Counter m_block_read_time; /* times in microseconds */
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PgStat_Counter m_block_write_time;
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PgStat_TableEntry m_entry[PGSTAT_NUM_TABENTRIES];
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} PgStat_MsgTabstat;
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/* ----------
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* PgStat_MsgTabpurge Sent by the backend to tell the collector
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* about dead tables.
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* ----------
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*/
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#define PGSTAT_NUM_TABPURGE \
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((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \
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/ sizeof(Oid))
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typedef struct PgStat_MsgTabpurge
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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int m_nentries;
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Oid m_tableid[PGSTAT_NUM_TABPURGE];
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} PgStat_MsgTabpurge;
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/* ----------
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* PgStat_MsgDropdb Sent by the backend to tell the collector
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* about a dropped database
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* ----------
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*/
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typedef struct PgStat_MsgDropdb
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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} PgStat_MsgDropdb;
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/* ----------
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* PgStat_MsgResetcounter Sent by the backend to tell the collector
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* to reset counters
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* ----------
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*/
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typedef struct PgStat_MsgResetcounter
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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} PgStat_MsgResetcounter;
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/* ----------
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* PgStat_MsgResetsharedcounter Sent by the backend to tell the collector
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* to reset a shared counter
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* ----------
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*/
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typedef struct PgStat_MsgResetsharedcounter
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{
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PgStat_MsgHdr m_hdr;
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PgStat_Shared_Reset_Target m_resettarget;
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} PgStat_MsgResetsharedcounter;
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/* ----------
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* PgStat_MsgResetsinglecounter Sent by the backend to tell the collector
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* to reset a single counter
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* ----------
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*/
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typedef struct PgStat_MsgResetsinglecounter
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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PgStat_Single_Reset_Type m_resettype;
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Oid m_objectid;
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} PgStat_MsgResetsinglecounter;
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/* ----------
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* PgStat_MsgAutovacStart Sent by the autovacuum daemon to signal
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* that a database is going to be processed
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* ----------
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*/
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typedef struct PgStat_MsgAutovacStart
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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TimestampTz m_start_time;
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} PgStat_MsgAutovacStart;
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/* ----------
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* PgStat_MsgVacuum Sent by the backend or autovacuum daemon
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* after VACUUM
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* ----------
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*/
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typedef struct PgStat_MsgVacuum
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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Oid m_tableoid;
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bool m_autovacuum;
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TimestampTz m_vacuumtime;
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PgStat_Counter m_tuples;
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} PgStat_MsgVacuum;
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/* ----------
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* PgStat_MsgAnalyze Sent by the backend or autovacuum daemon
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* after ANALYZE
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* ----------
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*/
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typedef struct PgStat_MsgAnalyze
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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Oid m_tableoid;
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bool m_autovacuum;
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TimestampTz m_analyzetime;
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PgStat_Counter m_live_tuples;
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PgStat_Counter m_dead_tuples;
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} PgStat_MsgAnalyze;
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/* ----------
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* PgStat_MsgBgWriter Sent by the bgwriter to update statistics.
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* ----------
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*/
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typedef struct PgStat_MsgBgWriter
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{
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PgStat_MsgHdr m_hdr;
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PgStat_Counter m_timed_checkpoints;
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PgStat_Counter m_requested_checkpoints;
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PgStat_Counter m_buf_written_checkpoints;
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PgStat_Counter m_buf_written_clean;
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PgStat_Counter m_maxwritten_clean;
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PgStat_Counter m_buf_written_backend;
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PgStat_Counter m_buf_fsync_backend;
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PgStat_Counter m_buf_alloc;
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PgStat_Counter m_checkpoint_write_time; /* times in milliseconds */
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PgStat_Counter m_checkpoint_sync_time;
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} PgStat_MsgBgWriter;
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/* ----------
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* PgStat_MsgRecoveryConflict Sent by the backend upon recovery conflict
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* ----------
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*/
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typedef struct PgStat_MsgRecoveryConflict
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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int m_reason;
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} PgStat_MsgRecoveryConflict;
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/* ----------
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* PgStat_MsgTempFile Sent by the backend upon creating a temp file
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* ----------
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*/
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typedef struct PgStat_MsgTempFile
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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size_t m_filesize;
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} PgStat_MsgTempFile;
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/* ----------
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* PgStat_FunctionCounts The actual per-function counts kept by a backend
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*
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* This struct should contain only actual event counters, because we memcmp
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* it against zeroes to detect whether there are any counts to transmit.
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*
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* Note that the time counters are in instr_time format here. We convert to
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* microseconds in PgStat_Counter format when transmitting to the collector.
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* ----------
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*/
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typedef struct PgStat_FunctionCounts
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{
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PgStat_Counter f_numcalls;
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instr_time f_total_time;
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instr_time f_self_time;
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} PgStat_FunctionCounts;
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/* ----------
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* PgStat_BackendFunctionEntry Entry in backend's per-function hash table
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* ----------
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*/
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typedef struct PgStat_BackendFunctionEntry
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{
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Oid f_id;
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PgStat_FunctionCounts f_counts;
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} PgStat_BackendFunctionEntry;
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/* ----------
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* PgStat_FunctionEntry Per-function info in a MsgFuncstat
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* ----------
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*/
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typedef struct PgStat_FunctionEntry
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{
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Oid f_id;
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PgStat_Counter f_numcalls;
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PgStat_Counter f_total_time; /* times in microseconds */
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PgStat_Counter f_self_time;
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} PgStat_FunctionEntry;
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/* ----------
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* PgStat_MsgFuncstat Sent by the backend to report function
|
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* usage statistics.
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* ----------
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*/
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#define PGSTAT_NUM_FUNCENTRIES \
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((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \
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/ sizeof(PgStat_FunctionEntry))
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typedef struct PgStat_MsgFuncstat
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{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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int m_nentries;
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||||
PgStat_FunctionEntry m_entry[PGSTAT_NUM_FUNCENTRIES];
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} PgStat_MsgFuncstat;
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/* ----------
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* PgStat_MsgFuncpurge Sent by the backend to tell the collector
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* about dead functions.
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||||
* ----------
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*/
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||||
#define PGSTAT_NUM_FUNCPURGE \
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((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \
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/ sizeof(Oid))
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||||
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||||
typedef struct PgStat_MsgFuncpurge
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||||
{
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PgStat_MsgHdr m_hdr;
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Oid m_databaseid;
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||||
int m_nentries;
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||||
Oid m_functionid[PGSTAT_NUM_FUNCPURGE];
|
||||
} PgStat_MsgFuncpurge;
|
||||
|
||||
/* ----------
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* PgStat_MsgDeadlock Sent by the backend to tell the collector
|
||||
* about a deadlock that occurred.
|
||||
* ----------
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||||
*/
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||||
typedef struct PgStat_MsgDeadlock
|
||||
{
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||||
PgStat_MsgHdr m_hdr;
|
||||
Oid m_databaseid;
|
||||
} PgStat_MsgDeadlock;
|
||||
|
||||
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||||
/* ----------
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||||
* PgStat_Msg Union over all possible messages.
|
||||
* ----------
|
||||
*/
|
||||
typedef union PgStat_Msg
|
||||
{
|
||||
PgStat_MsgHdr msg_hdr;
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||||
PgStat_MsgDummy msg_dummy;
|
||||
PgStat_MsgInquiry msg_inquiry;
|
||||
PgStat_MsgTabstat msg_tabstat;
|
||||
PgStat_MsgTabpurge msg_tabpurge;
|
||||
PgStat_MsgDropdb msg_dropdb;
|
||||
PgStat_MsgResetcounter msg_resetcounter;
|
||||
PgStat_MsgResetsharedcounter msg_resetsharedcounter;
|
||||
PgStat_MsgResetsinglecounter msg_resetsinglecounter;
|
||||
PgStat_MsgAutovacStart msg_autovacuum;
|
||||
PgStat_MsgVacuum msg_vacuum;
|
||||
PgStat_MsgAnalyze msg_analyze;
|
||||
PgStat_MsgBgWriter msg_bgwriter;
|
||||
PgStat_MsgFuncstat msg_funcstat;
|
||||
PgStat_MsgFuncpurge msg_funcpurge;
|
||||
PgStat_MsgRecoveryConflict msg_recoveryconflict;
|
||||
PgStat_MsgDeadlock msg_deadlock;
|
||||
} PgStat_Msg;
|
||||
|
||||
|
||||
/* ------------------------------------------------------------
|
||||
* Statistic collector data structures follow
|
||||
*
|
||||
* PGSTAT_FILE_FORMAT_ID should be changed whenever any of these
|
||||
* data structures change.
|
||||
* ------------------------------------------------------------
|
||||
*/
|
||||
|
||||
#define PGSTAT_FILE_FORMAT_ID 0x01A5BC9A
|
||||
|
||||
/* ----------
|
||||
* PgStat_StatDBEntry The collector's data per database
|
||||
* ----------
|
||||
*/
|
||||
typedef struct PgStat_StatDBEntry
|
||||
{
|
||||
Oid databaseid;
|
||||
PgStat_Counter n_xact_commit;
|
||||
PgStat_Counter n_xact_rollback;
|
||||
PgStat_Counter n_blocks_fetched;
|
||||
PgStat_Counter n_blocks_hit;
|
||||
PgStat_Counter n_tuples_returned;
|
||||
PgStat_Counter n_tuples_fetched;
|
||||
PgStat_Counter n_tuples_inserted;
|
||||
PgStat_Counter n_tuples_updated;
|
||||
PgStat_Counter n_tuples_deleted;
|
||||
TimestampTz last_autovac_time;
|
||||
PgStat_Counter n_conflict_tablespace;
|
||||
PgStat_Counter n_conflict_lock;
|
||||
PgStat_Counter n_conflict_snapshot;
|
||||
PgStat_Counter n_conflict_bufferpin;
|
||||
PgStat_Counter n_conflict_startup_deadlock;
|
||||
PgStat_Counter n_temp_files;
|
||||
PgStat_Counter n_temp_bytes;
|
||||
PgStat_Counter n_deadlocks;
|
||||
PgStat_Counter n_block_read_time; /* times in microseconds */
|
||||
PgStat_Counter n_block_write_time;
|
||||
|
||||
TimestampTz stat_reset_timestamp;
|
||||
|
||||
/*
|
||||
* tables and functions must be last in the struct, because we don't write
|
||||
* the pointers out to the stats file.
|
||||
*/
|
||||
HTAB *tables;
|
||||
HTAB *functions;
|
||||
} PgStat_StatDBEntry;
|
||||
|
||||
|
||||
/* ----------
|
||||
* PgStat_StatTabEntry The collector's data per table (or index)
|
||||
* ----------
|
||||
*/
|
||||
typedef struct PgStat_StatTabEntry
|
||||
{
|
||||
Oid tableid;
|
||||
|
||||
PgStat_Counter numscans;
|
||||
|
||||
PgStat_Counter tuples_returned;
|
||||
PgStat_Counter tuples_fetched;
|
||||
|
||||
PgStat_Counter tuples_inserted;
|
||||
PgStat_Counter tuples_updated;
|
||||
PgStat_Counter tuples_deleted;
|
||||
PgStat_Counter tuples_hot_updated;
|
||||
|
||||
PgStat_Counter n_live_tuples;
|
||||
PgStat_Counter n_dead_tuples;
|
||||
PgStat_Counter changes_since_analyze;
|
||||
|
||||
PgStat_Counter blocks_fetched;
|
||||
PgStat_Counter blocks_hit;
|
||||
|
||||
TimestampTz vacuum_timestamp; /* user initiated vacuum */
|
||||
PgStat_Counter vacuum_count;
|
||||
TimestampTz autovac_vacuum_timestamp; /* autovacuum initiated */
|
||||
PgStat_Counter autovac_vacuum_count;
|
||||
TimestampTz analyze_timestamp; /* user initiated */
|
||||
PgStat_Counter analyze_count;
|
||||
TimestampTz autovac_analyze_timestamp; /* autovacuum initiated */
|
||||
PgStat_Counter autovac_analyze_count;
|
||||
} PgStat_StatTabEntry;
|
||||
|
||||
|
||||
/* ----------
|
||||
* PgStat_StatFuncEntry The collector's data per function
|
||||
* ----------
|
||||
*/
|
||||
typedef struct PgStat_StatFuncEntry
|
||||
{
|
||||
Oid functionid;
|
||||
|
||||
PgStat_Counter f_numcalls;
|
||||
|
||||
PgStat_Counter f_total_time; /* times in microseconds */
|
||||
PgStat_Counter f_self_time;
|
||||
} PgStat_StatFuncEntry;
|
||||
|
||||
|
||||
/*
|
||||
* Global statistics kept in the stats collector
|
||||
*/
|
||||
typedef struct PgStat_GlobalStats
|
||||
{
|
||||
TimestampTz stats_timestamp; /* time of stats file update */
|
||||
PgStat_Counter timed_checkpoints;
|
||||
PgStat_Counter requested_checkpoints;
|
||||
PgStat_Counter checkpoint_write_time; /* times in milliseconds */
|
||||
PgStat_Counter checkpoint_sync_time;
|
||||
PgStat_Counter buf_written_checkpoints;
|
||||
PgStat_Counter buf_written_clean;
|
||||
PgStat_Counter maxwritten_clean;
|
||||
PgStat_Counter buf_written_backend;
|
||||
PgStat_Counter buf_fsync_backend;
|
||||
PgStat_Counter buf_alloc;
|
||||
TimestampTz stat_reset_timestamp;
|
||||
} PgStat_GlobalStats;
|
||||
|
||||
|
||||
/* ----------
|
||||
* Backend states
|
||||
* ----------
|
||||
*/
|
||||
typedef enum BackendState
|
||||
{
|
||||
STATE_UNDEFINED,
|
||||
STATE_IDLE,
|
||||
STATE_RUNNING,
|
||||
STATE_IDLEINTRANSACTION,
|
||||
STATE_FASTPATH,
|
||||
STATE_IDLEINTRANSACTION_ABORTED,
|
||||
STATE_DISABLED,
|
||||
} BackendState;
|
||||
|
||||
/* ----------
|
||||
* Shared-memory data structures
|
||||
* ----------
|
||||
*/
|
||||
|
||||
|
||||
/* ----------
|
||||
* PgBackendStatus
|
||||
*
|
||||
* Each live backend maintains a PgBackendStatus struct in shared memory
|
||||
* showing its current activity. (The structs are allocated according to
|
||||
* BackendId, but that is not critical.) Note that the collector process
|
||||
* has no involvement in, or even access to, these structs.
|
||||
* ----------
|
||||
*/
|
||||
typedef struct PgBackendStatus
|
||||
{
|
||||
/*
|
||||
* To avoid locking overhead, we use the following protocol: a backend
|
||||
* increments st_changecount before modifying its entry, and again after
|
||||
* finishing a modification. A would-be reader should note the value of
|
||||
* st_changecount, copy the entry into private memory, then check
|
||||
* st_changecount again. If the value hasn't changed, and if it's even,
|
||||
* the copy is valid; otherwise start over. This makes updates cheap
|
||||
* while reads are potentially expensive, but that's the tradeoff we want.
|
||||
*/
|
||||
int st_changecount;
|
||||
|
||||
/* The entry is valid iff st_procpid > 0, unused if st_procpid == 0 */
|
||||
int st_procpid;
|
||||
|
||||
/* Times when current backend, transaction, and activity started */
|
||||
TimestampTz st_proc_start_timestamp;
|
||||
TimestampTz st_xact_start_timestamp;
|
||||
TimestampTz st_activity_start_timestamp;
|
||||
TimestampTz st_state_start_timestamp;
|
||||
|
||||
/* Database OID, owning user's OID, connection client address */
|
||||
Oid st_databaseid;
|
||||
Oid st_userid;
|
||||
SockAddr st_clientaddr;
|
||||
char *st_clienthostname; /* MUST be null-terminated */
|
||||
|
||||
/* Is backend currently waiting on an lmgr lock? */
|
||||
bool st_waiting;
|
||||
|
||||
/* current state */
|
||||
BackendState st_state;
|
||||
|
||||
/* application name; MUST be null-terminated */
|
||||
char *st_appname;
|
||||
|
||||
/* current command string; MUST be null-terminated */
|
||||
char *st_activity;
|
||||
} PgBackendStatus;
|
||||
|
||||
/*
|
||||
* Working state needed to accumulate per-function-call timing statistics.
|
||||
*/
|
||||
typedef struct PgStat_FunctionCallUsage
|
||||
{
|
||||
/* Link to function's hashtable entry (must still be there at exit!) */
|
||||
/* NULL means we are not tracking the current function call */
|
||||
PgStat_FunctionCounts *fs;
|
||||
/* Total time previously charged to function, as of function start */
|
||||
instr_time save_f_total_time;
|
||||
/* Backend-wide total time as of function start */
|
||||
instr_time save_total;
|
||||
/* system clock as of function start */
|
||||
instr_time f_start;
|
||||
} PgStat_FunctionCallUsage;
|
||||
|
||||
|
||||
/* ----------
|
||||
* GUC parameters
|
||||
* ----------
|
||||
*/
|
||||
extern bool pgstat_track_activities;
|
||||
extern bool pgstat_track_counts;
|
||||
extern int pgstat_track_functions;
|
||||
extern PGDLLIMPORT int pgstat_track_activity_query_size;
|
||||
extern char *pgstat_stat_tmpname;
|
||||
extern char *pgstat_stat_filename;
|
||||
|
||||
/*
|
||||
* BgWriter statistics counters are updated directly by bgwriter and bufmgr
|
||||
*/
|
||||
extern PgStat_MsgBgWriter BgWriterStats;
|
||||
|
||||
/*
|
||||
* Updated by pgstat_count_buffer_*_time macros
|
||||
*/
|
||||
extern PgStat_Counter pgStatBlockReadTime;
|
||||
extern PgStat_Counter pgStatBlockWriteTime;
|
||||
|
||||
/* ----------
|
||||
* Functions called from postmaster
|
||||
* ----------
|
||||
*/
|
||||
extern Size BackendStatusShmemSize(void);
|
||||
extern void CreateSharedBackendStatus(void);
|
||||
|
||||
extern void pgstat_init(void);
|
||||
extern int pgstat_start(void);
|
||||
extern void pgstat_reset_all(void);
|
||||
extern void allow_immediate_pgstat_restart(void);
|
||||
|
||||
#ifdef EXEC_BACKEND
|
||||
extern void PgstatCollectorMain(int argc, char *argv[]);
|
||||
#endif
|
||||
|
||||
|
||||
/* ----------
|
||||
* Functions called from backends
|
||||
* ----------
|
||||
*/
|
||||
extern void pgstat_ping(void);
|
||||
|
||||
extern void pgstat_report_stat(bool force);
|
||||
extern void pgstat_vacuum_stat(void);
|
||||
extern void pgstat_drop_database(Oid databaseid);
|
||||
|
||||
extern void pgstat_clear_snapshot(void);
|
||||
extern void pgstat_reset_counters(void);
|
||||
extern void pgstat_reset_shared_counters(const char *);
|
||||
extern void pgstat_reset_single_counter(Oid objectid, PgStat_Single_Reset_Type type);
|
||||
|
||||
extern void pgstat_report_autovac(Oid dboid);
|
||||
extern void pgstat_report_vacuum(Oid tableoid, bool shared,
|
||||
PgStat_Counter tuples);
|
||||
extern void pgstat_report_analyze(Relation rel,
|
||||
PgStat_Counter livetuples, PgStat_Counter deadtuples);
|
||||
|
||||
extern void pgstat_report_recovery_conflict(int reason);
|
||||
extern void pgstat_report_deadlock(void);
|
||||
|
||||
extern void pgstat_initialize(void);
|
||||
extern void pgstat_bestart(void);
|
||||
|
||||
extern void pgstat_report_activity(BackendState state, const char *cmd_str);
|
||||
extern void pgstat_report_tempfile(size_t filesize);
|
||||
extern void pgstat_report_appname(const char *appname);
|
||||
extern void pgstat_report_xact_timestamp(TimestampTz tstamp);
|
||||
extern void pgstat_report_waiting(bool waiting);
|
||||
extern const char *pgstat_get_backend_current_activity(int pid, bool checkUser);
|
||||
extern const char *pgstat_get_crashed_backend_activity(int pid, char *buffer,
|
||||
int buflen);
|
||||
|
||||
extern PgStat_TableStatus *find_tabstat_entry(Oid rel_id);
|
||||
extern PgStat_BackendFunctionEntry *find_funcstat_entry(Oid func_id);
|
||||
|
||||
extern void pgstat_initstats(Relation rel);
|
||||
|
||||
/* nontransactional event counts are simple enough to inline */
|
||||
|
||||
#define pgstat_count_heap_scan(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_numscans++; \
|
||||
} while (0)
|
||||
#define pgstat_count_heap_getnext(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_tuples_returned++; \
|
||||
} while (0)
|
||||
#define pgstat_count_heap_fetch(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_tuples_fetched++; \
|
||||
} while (0)
|
||||
#define pgstat_count_index_scan(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_numscans++; \
|
||||
} while (0)
|
||||
#define pgstat_count_index_tuples(rel, n) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_tuples_returned += (n); \
|
||||
} while (0)
|
||||
#define pgstat_count_buffer_read(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_blocks_fetched++; \
|
||||
} while (0)
|
||||
#define pgstat_count_buffer_hit(rel) \
|
||||
do { \
|
||||
if ((rel)->pgstat_info != NULL) \
|
||||
(rel)->pgstat_info->t_counts.t_blocks_hit++; \
|
||||
} while (0)
|
||||
#define pgstat_count_buffer_read_time(n) \
|
||||
(pgStatBlockReadTime += (n))
|
||||
#define pgstat_count_buffer_write_time(n) \
|
||||
(pgStatBlockWriteTime += (n))
|
||||
|
||||
extern void pgstat_count_heap_insert(Relation rel, int n);
|
||||
extern void pgstat_count_heap_update(Relation rel, bool hot);
|
||||
extern void pgstat_count_heap_delete(Relation rel);
|
||||
extern void pgstat_update_heap_dead_tuples(Relation rel, int delta);
|
||||
|
||||
extern void pgstat_init_function_usage(FunctionCallInfoData *fcinfo,
|
||||
PgStat_FunctionCallUsage *fcu);
|
||||
extern void pgstat_end_function_usage(PgStat_FunctionCallUsage *fcu,
|
||||
bool finalize);
|
||||
|
||||
extern void AtEOXact_PgStat(bool isCommit);
|
||||
extern void AtEOSubXact_PgStat(bool isCommit, int nestDepth);
|
||||
|
||||
extern void AtPrepare_PgStat(void);
|
||||
extern void PostPrepare_PgStat(void);
|
||||
|
||||
extern void pgstat_twophase_postcommit(TransactionId xid, uint16 info,
|
||||
void *recdata, uint32 len);
|
||||
extern void pgstat_twophase_postabort(TransactionId xid, uint16 info,
|
||||
void *recdata, uint32 len);
|
||||
|
||||
extern void pgstat_send_bgwriter(void);
|
||||
|
||||
/* ----------
|
||||
* Support functions for the SQL-callable functions to
|
||||
* generate the pgstat* views.
|
||||
* ----------
|
||||
*/
|
||||
extern PgStat_StatDBEntry *pgstat_fetch_stat_dbentry(Oid dbid);
|
||||
extern PgStat_StatTabEntry *pgstat_fetch_stat_tabentry(Oid relid);
|
||||
extern PgBackendStatus *pgstat_fetch_stat_beentry(int beid);
|
||||
extern PgStat_StatFuncEntry *pgstat_fetch_stat_funcentry(Oid funcid);
|
||||
extern int pgstat_fetch_stat_numbackends(void);
|
||||
extern PgStat_GlobalStats *pgstat_fetch_global(void);
|
||||
|
||||
#endif /* PGSTAT_H */
|
||||
Reference in New Issue
Block a user