Header And Logo
|
#include "datatype/timestamp.h"#include "fmgr.h"#include "libpq/pqcomm.h"#include "portability/instr_time.h"#include "utils/hsearch.h"#include "utils/relcache.h"
Go to the source code of this file.
| #define pgstat_count_buffer_hit | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_blocks_hit++; \ } while (0)
Definition at line 832 of file pgstat.h.
Referenced by ReadBufferExtended().
| #define pgstat_count_buffer_read | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_blocks_fetched++; \ } while (0)
Definition at line 827 of file pgstat.h.
Referenced by ReadBufferExtended().
| #define pgstat_count_buffer_read_time | ( | n | ) | (pgStatBlockReadTime += (n)) |
Definition at line 837 of file pgstat.h.
Referenced by ReadBuffer_common().
| #define pgstat_count_buffer_write_time | ( | n | ) | (pgStatBlockWriteTime += (n)) |
Definition at line 839 of file pgstat.h.
Referenced by FlushBuffer().
| #define pgstat_count_heap_fetch | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_tuples_fetched++; \ } while (0)
Definition at line 812 of file pgstat.h.
Referenced by BitmapHeapNext(), heap_fetch(), and index_fetch_heap().
| #define pgstat_count_heap_getnext | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_tuples_returned++; \ } while (0)
Definition at line 807 of file pgstat.h.
Referenced by heap_getnext().
| #define pgstat_count_heap_scan | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_numscans++; \ } while (0)
Definition at line 802 of file pgstat.h.
Referenced by initscan().
| #define pgstat_count_index_scan | ( | rel | ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_numscans++; \ } while (0)
Definition at line 817 of file pgstat.h.
Referenced by _bt_first(), _hash_first(), ginNewScanKey(), gistgetbitmap(), and gistgettuple().
| #define pgstat_count_index_tuples | ( | rel, | ||
| n | ||||
| ) |
do { \ if ((rel)->pgstat_info != NULL) \ (rel)->pgstat_info->t_counts.t_tuples_returned += (n); \ } while (0)
Definition at line 822 of file pgstat.h.
Referenced by index_getbitmap(), and index_getnext_tid().
| #define PGSTAT_FILE_FORMAT_ID 0x01A5BC9B |
Definition at line 518 of file pgstat.h.
Referenced by pgstat_read_db_statsfile(), pgstat_read_db_statsfile_timestamp(), and pgstat_read_statsfiles().
| #define PGSTAT_MSG_PAYLOAD (1000 - sizeof(PgStat_MsgHdr)) |
| #define PGSTAT_NUM_FUNCENTRIES |
((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \ / sizeof(PgStat_FunctionEntry))
Definition at line 443 of file pgstat.h.
Referenced by pgstat_send_funcstats().
| #define PGSTAT_NUM_FUNCPURGE |
((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \ / sizeof(Oid))
Definition at line 460 of file pgstat.h.
Referenced by pgstat_vacuum_stat().
| #define PGSTAT_NUM_TABENTRIES |
((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - 3 * sizeof(int)) \ / sizeof(PgStat_TableEntry))
Definition at line 227 of file pgstat.h.
Referenced by pgstat_report_stat().
| #define PGSTAT_NUM_TABPURGE |
((PGSTAT_MSG_PAYLOAD - sizeof(Oid) - sizeof(int)) \ / sizeof(Oid))
Definition at line 249 of file pgstat.h.
Referenced by pgstat_vacuum_stat().
| typedef enum BackendState BackendState |
| typedef struct PgBackendStatus PgBackendStatus |
| typedef struct PgStat_BackendFunctionEntry PgStat_BackendFunctionEntry |
| typedef int64 PgStat_Counter |
| 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_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 StatMsgType StatMsgType |
| typedef enum TrackFunctionsLevel TrackFunctionsLevel |
| enum BackendState |
| STATE_UNDEFINED | |
| STATE_IDLE | |
| STATE_RUNNING | |
| STATE_IDLEINTRANSACTION | |
| STATE_FASTPATH | |
| STATE_IDLEINTRANSACTION_ABORTED | |
| STATE_DISABLED |
Definition at line 635 of file pgstat.h.
{
STATE_UNDEFINED,
STATE_IDLE,
STATE_RUNNING,
STATE_IDLEINTRANSACTION,
STATE_FASTPATH,
STATE_IDLEINTRANSACTION_ABORTED,
STATE_DISABLED,
} BackendState;
Definition at line 103 of file pgstat.h.
{
RESET_BGWRITER
} PgStat_Shared_Reset_Target;
Definition at line 109 of file pgstat.h.
{
RESET_TABLE,
RESET_FUNCTION
} PgStat_Single_Reset_Type;
| enum StatMsgType |
Definition at line 34 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_BGWRITER,
PGSTAT_MTYPE_FUNCSTAT,
PGSTAT_MTYPE_FUNCPURGE,
PGSTAT_MTYPE_RECOVERYCONFLICT,
PGSTAT_MTYPE_TEMPFILE,
PGSTAT_MTYPE_DEADLOCK
} StatMsgType;
| enum TrackFunctionsLevel |
Definition at line 23 of file pgstat.h.
{
TRACK_FUNC_OFF,
TRACK_FUNC_PL,
TRACK_FUNC_ALL
} TrackFunctionsLevel;
| void allow_immediate_pgstat_restart | ( | void | ) |
Definition at line 692 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 1927 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_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::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)
{
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
*/
/* 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 1854 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(), pgStatXactCommit, pgStatXactRollback, 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_tuples_deleted, PgStat_TableCounts::t_tuples_inserted, PgStat_TableCounts::t_tuples_updated, PgStat_TableStatus::trans, trans, 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);
/* 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)
{
/* 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 2012 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_SubXactStatus::prev, RegisterTwoPhaseRecord(), PgStat_TableStatus::t_id, TwoPhasePgStatRecord::t_id, PgStat_TableStatus::t_shared, TwoPhasePgStatRecord::t_shared, PgStat_TableStatus::trans, trans, 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, 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.t_id = tabstat->t_id;
record.t_shared = tabstat->t_shared;
RegisterTwoPhaseRecord(TWOPHASE_RM_PGSTAT_ID, 0,
&record, sizeof(TwoPhasePgStatRecord));
}
}
}
| Size BackendStatusShmemSize | ( | void | ) |
Definition at line 2322 of file pgstat.c.
References add_size(), MaxBackends, mul_size(), NAMEDATALEN, and pgstat_track_activity_query_size.
Referenced by CreateSharedMemoryAndSemaphores().
{
Size size;
size = mul_size(sizeof(PgBackendStatus), MaxBackends);
size = add_size(size,
mul_size(NAMEDATALEN, MaxBackends));
size = add_size(size,
mul_size(pgstat_track_activity_query_size, MaxBackends));
size = add_size(size,
mul_size(NAMEDATALEN, MaxBackends));
return size;
}
| void CreateSharedBackendStatus | ( | void | ) |
Definition at line 2341 of file pgstat.c.
References i, MaxBackends, MemSet, mul_size(), NAMEDATALEN, pgstat_track_activity_query_size, ShmemInitStruct(), PgBackendStatus::st_activity, PgBackendStatus::st_appname, and PgBackendStatus::st_clienthostname.
Referenced by CreateSharedMemoryAndSemaphores().
{
Size size;
bool found;
int i;
char *buffer;
/* Create or attach to the shared array */
size = mul_size(sizeof(PgBackendStatus), MaxBackends);
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 < MaxBackends; 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 < MaxBackends; i++)
{
BackendStatusArray[i].st_clienthostname = buffer;
buffer += NAMEDATALEN;
}
}
/* Create or attach to the shared activity buffer */
BackendActivityBufferSize = mul_size(pgstat_track_activity_query_size,
MaxBackends);
BackendActivityBuffer = (char *)
ShmemInitStruct("Backend Activity Buffer",
BackendActivityBufferSize,
&found);
if (!found)
{
MemSet(BackendActivityBuffer, 0, size);
/* Initialize st_activity pointers. */
buffer = BackendActivityBuffer;
for (i = 0; i < MaxBackends; i++)
{
BackendStatusArray[i].st_activity = buffer;
buffer += pgstat_track_activity_query_size;
}
}
}
| PgStat_BackendFunctionEntry* find_funcstat_entry | ( | Oid | func_id | ) |
Definition at line 1518 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 1693 of file pgstat.c.
References i, PgStat_TableStatus::t_id, TabStatusArray::tsa_entries, TabStatusArray::tsa_next, and TabStatusArray::tsa_used.
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().
{
PgStat_TableStatus *entry;
TabStatusArray *tsa;
int i;
for (tsa = pgStatTabList; tsa != NULL; tsa = tsa->tsa_next)
{
for (i = 0; i < tsa->tsa_used; i++)
{
entry = &tsa->tsa_entries[i];
if (entry->t_id == rel_id)
return entry;
}
}
/* Not present */
return NULL;
}
| void pgstat_bestart | ( | void | ) |
Definition at line 2451 of file pgstat.c.
References application_name, Assert, GetCurrentTimestamp(), GetSessionUserId(), MemSet, MyDatabaseId, MyProcPid, MyProcPort, NAMEDATALEN, pgstat_report_appname(), pgstat_track_activity_query_size, Port::raddr, Port::remote_hostname, Port::SessionStartTime, PgBackendStatus::st_activity, PgBackendStatus::st_activity_start_timestamp, PgBackendStatus::st_appname, PgBackendStatus::st_changecount, PgBackendStatus::st_clientaddr, PgBackendStatus::st_clienthostname, PgBackendStatus::st_databaseid, PgBackendStatus::st_proc_start_timestamp, PgBackendStatus::st_procpid, PgBackendStatus::st_state, PgBackendStatus::st_state_start_timestamp, PgBackendStatus::st_userid, PgBackendStatus::st_waiting, PgBackendStatus::st_xact_start_timestamp, and strlcpy().
Referenced by InitPostgres().
{
TimestampTz proc_start_timestamp;
Oid userid;
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();
userid = GetSessionUserId();
/*
* 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;
do
{
beentry->st_changecount++;
} 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;
beentry->st_userid = userid;
beentry->st_clientaddr = clientaddr;
beentry->st_clienthostname[0] = '\0';
beentry->st_waiting = false;
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_changecount++;
Assert((beentry->st_changecount & 1) == 0);
if (MyProcPort && MyProcPort->remote_hostname)
strlcpy(beentry->st_clienthostname, MyProcPort->remote_hostname, NAMEDATALEN);
/* Update app name to current GUC setting */
if (application_name)
pgstat_report_appname(application_name);
}
| void pgstat_clear_snapshot | ( | void | ) |
Definition at line 4370 of file pgstat.c.
References localNumBackends, and MemoryContextDelete().
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 1812 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_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, | |
| int | n | |||
| ) |
Definition at line 1766 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 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;
}
}
Definition at line 1787 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_drop_database | ( | Oid | databaseid | ) |
Definition at line 1137 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 1538 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 EventTriggerInvoke(), ExecCallTriggerFunc(), ExecMakeFunctionResult(), ExecMakeFunctionResultNoSets(), 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 2297 of file pgstat.c.
References backend_read_statsfile().
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(), and pg_stat_get_checkpoint_write_time().
{
backend_read_statsfile();
return &globalStats;
}
| PgBackendStatus* pgstat_fetch_stat_beentry | ( | int | beid | ) |
Definition at line 2262 of file pgstat.c.
References localNumBackends, and pgstat_read_current_status().
Referenced by pg_stat_get_activity(), 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_waiting(), 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];
}
| PgStat_StatDBEntry* pgstat_fetch_stat_dbentry | ( | Oid | dbid | ) |
Definition at line 2147 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 2230 of file pgstat.c.
References backend_read_statsfile(), PgStat_StatDBEntry::functions, 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;
}
| int pgstat_fetch_stat_numbackends | ( | void | ) |
Definition at line 2281 of file pgstat.c.
References localNumBackends, and pgstat_read_current_status().
Referenced by pg_stat_get_activity(), pg_stat_get_backend_idset(), and pg_stat_get_db_numbackends().
{
pgstat_read_current_status();
return localNumBackends;
}
| PgStat_StatTabEntry* pgstat_fetch_stat_tabentry | ( | Oid | relid | ) |
Definition at line 2174 of file pgstat.c.
References backend_read_statsfile(), hash_search(), 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_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 2826 of file pgstat.c.
References CHECK_FOR_INTERRUPTS, GetUserId(), i, MaxBackends, PgBackendStatus::st_activity, PgBackendStatus::st_changecount, 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 save_changecount = vbeentry->st_changecount;
found = (vbeentry->st_procpid == pid);
if (save_changecount == vbeentry->st_changecount &&
(save_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_crashed_backend_activity | ( | int | pid, | |
| char * | buffer, | |||
| int | buflen | |||
| ) |
Definition at line 2896 of file pgstat.c.
References ascii_safe_strlcpy(), 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;
}
| void pgstat_init | ( | void | ) |
Definition at line 316 of file pgstat.c.
References addrinfo::ai_next, closesocket, connect, EINTR, 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, pgStatAddr, pgStatSock, recv, select, send, SetConfigOption(), socket, 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)
/*
* Create the UDP socket for sending and receiving statistic messages
*/
hints.ai_flags = AI_PASSIVE;
hints.ai_family = PF_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;
}
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 1465 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, HASHCTL::hash, hash_create(), HASH_ELEM, HASH_ENTER, HASH_FUNCTION, hash_search(), INSTR_TIME_SET_CURRENT, HASHCTL::keysize, MemSet, PGSTAT_FUNCTION_HASH_SIZE, PgStat_FunctionCallUsage::save_f_total_time, PgStat_FunctionCallUsage::save_total, and total_func_time.
Referenced by EventTriggerInvoke(), ExecCallTriggerFunc(), ExecMakeFunctionResult(), ExecMakeFunctionResultNoSets(), 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);
hash_ctl.hash = oid_hash;
pgStatFunctions = hash_create("Function stat entries",
PGSTAT_FUNCTION_HASH_SIZE,
&hash_ctl,
HASH_ELEM | HASH_FUNCTION);
}
/* 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 2431 of file pgstat.c.
References Assert, MaxBackends, MyBackendId, on_shmem_exit(), and pgstat_beshutdown_hook().
Referenced by InitPostgres().
{
/* Initialize MyBEEntry */
Assert(MyBackendId >= 1 && MyBackendId <= MaxBackends);
MyBEEntry = &BackendStatusArray[MyBackendId - 1];
/* Set up a process-exit hook to clean up */
on_shmem_exit(pgstat_beshutdown_hook, 0);
}
| void pgstat_initstats | ( | Relation | rel | ) |
Definition at line 1595 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 1430 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_report_activity | ( | BackendState | state, | |
| const char * | cmd_str | |||
| ) |
Definition at line 2571 of file pgstat.c.
References Assert, GetCurrentStatementStartTimestamp(), GetCurrentTimestamp(), NULL, pg_mbcliplen(), pgstat_track_activities, pgstat_track_activity_query_size, PgBackendStatus::st_activity, PgBackendStatus::st_activity_start_timestamp, PgBackendStatus::st_changecount, PgBackendStatus::st_state, PgBackendStatus::st_state_start_timestamp, PgBackendStatus::st_waiting, PgBackendStatus::st_xact_start_timestamp, and STATE_DISABLED.
Referenced by autovac_report_activity(), exec_bind_message(), exec_execute_message(), exec_parse_message(), exec_simple_query(), initialize_worker_spi(), PostgresMain(), and worker_spi_main().
{
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)
{
/*
* 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.
*/
beentry->st_changecount++;
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 st_waiting are also disabled */
beentry->st_xact_start_timestamp = 0;
beentry->st_waiting = false;
beentry->st_changecount++;
Assert((beentry->st_changecount & 1) == 0);
}
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
*/
beentry->st_changecount++;
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;
}
beentry->st_changecount++;
Assert((beentry->st_changecount & 1) == 0);
}
| void pgstat_report_analyze | ( | Relation | rel, | |
| PgStat_Counter | livetuples, | |||
| PgStat_Counter | deadtuples | |||
| ) |
Definition at line 1319 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_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_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 2644 of file pgstat.c.
References Assert, NAMEDATALEN, pg_mbcliplen(), PgBackendStatus::st_appname, and PgBackendStatus::st_changecount.
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.
*/
beentry->st_changecount++;
memcpy((char *) beentry->st_appname, appname, len);
beentry->st_appname[len] = '\0';
beentry->st_changecount++;
Assert((beentry->st_changecount & 1) == 0);
}
| void pgstat_report_autovac | ( | Oid | dboid | ) |
Definition at line 1274 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 1390 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 1370 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 713 of file pgstat.c.
References Assert, GetCurrentTransactionStopTimestamp(), have_function_stats, i, PgStat_MsgTabstat::m_databaseid, PgStat_MsgTabstat::m_entry, PgStat_MsgTabstat::m_nentries, memcmp(), MemSet, MyDatabaseId, NULL, PGSTAT_NUM_TABENTRIES, pgstat_send_funcstats(), pgstat_send_tabstat(), PGSTAT_STAT_INTERVAL, pgStatXactCommit, pgStatXactRollback, PgStat_TableEntry::t_counts, PgStat_TableStatus::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 pgstat_beshutdown_hook(), and PostgresMain().
{
/* 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) &&
!have_function_stats && !force)
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;
/*
* 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 : ®ular_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. If force is true, make sure that any pending
* xact commit/abort gets counted, even if no table stats to send.
*/
if (regular_msg.m_nentries > 0 ||
(force && (pgStatXactCommit > 0 || pgStatXactRollback > 0)))
pgstat_send_tabstat(®ular_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 1409 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 | tuples | |||
| ) |
Definition at line 1296 of file pgstat.c.
References GetCurrentTimestamp(), InvalidOid, IsAutoVacuumWorkerProcess(), PgStat_MsgVacuum::m_autovacuum, PgStat_MsgVacuum::m_databaseid, PgStat_MsgVacuum::m_hdr, PgStat_MsgVacuum::m_tableoid, PgStat_MsgVacuum::m_tuples, 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_tuples = tuples;
pgstat_send(&msg, sizeof(msg));
}
| void pgstat_report_waiting | ( | bool | waiting | ) |
Definition at line 2702 of file pgstat.c.
References pgstat_track_activities, and PgBackendStatus::st_waiting.
Referenced by WaitOnLock().
{
volatile PgBackendStatus *beentry = MyBEEntry;
if (!pgstat_track_activities || !beentry)
return;
/*
* Since this is a single-byte field in a struct that only this process
* may modify, there seems no need to bother with the st_changecount
* protocol. The update must appear atomic in any case.
*/
beentry->st_waiting = waiting;
}
| void pgstat_report_xact_timestamp | ( | TimestampTz | tstamp | ) |
Definition at line 2674 of file pgstat.c.
References Assert, pgstat_track_activities, PgBackendStatus::st_changecount, and PgBackendStatus::st_xact_start_timestamp.
Referenced by AbortTransaction(), CommitTransaction(), 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.
*/
beentry->st_changecount++;
beentry->st_xact_start_timestamp = tstamp;
beentry->st_changecount++;
Assert((beentry->st_changecount & 1) == 0);
}
| void pgstat_reset_all | ( | void | ) |
Definition at line 587 of file pgstat.c.
References pgstat_reset_remove_files(), pgstat_stat_directory, and PGSTAT_STAT_PERMANENT_DIRECTORY.
Referenced by StartupXLOG().
| void pgstat_reset_counters | ( | void | ) |
Definition at line 1190 of file pgstat.c.
References ereport, errcode(), errmsg(), ERROR, PgStat_MsgResetcounter::m_databaseid, PgStat_MsgResetcounter::m_hdr, MyDatabaseId, PGINVALID_SOCKET, PGSTAT_MTYPE_RESETCOUNTER, pgstat_send(), pgstat_setheader(), pgStatSock, and superuser().
Referenced by pg_stat_reset().
{
PgStat_MsgResetcounter msg;
if (pgStatSock == PGINVALID_SOCKET)
return;
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to reset statistics counters")));
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 1214 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, and superuser().
Referenced by pg_stat_reset_shared().
{
PgStat_MsgResetsharedcounter msg;
if (pgStatSock == PGINVALID_SOCKET)
return;
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to reset statistics counters")));
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 \"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 1245 of file pgstat.c.
References ereport, errcode(), errmsg(), ERROR, 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(), pgStatSock, and superuser().
Referenced by pg_stat_reset_single_function_counters(), and pg_stat_reset_single_table_counters().
{
PgStat_MsgResetsinglecounter msg;
if (pgStatSock == PGINVALID_SOCKET)
return;
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to reset statistics counters")));
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_bgwriter | ( | void | ) |
Definition at line 3009 of file pgstat.c.
References PgStat_MsgBgWriter::m_hdr, memcmp(), 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, avoid sending a completely empty message to the stats
* collector.
*/
if (memcmp(&BgWriterStats, &all_zeroes, sizeof(PgStat_MsgBgWriter)) == 0)
return;
/*
* Prepare and send the message
*/
pgstat_setheader(&BgWriterStats.m_hdr, PGSTAT_MTYPE_BGWRITER);
pgstat_send(&BgWriterStats, sizeof(BgWriterStats));
/*
* Clear out the statistics buffer, so it can be re-used.
*/
MemSet(&BgWriterStats, 0, sizeof(BgWriterStats));
}
| int pgstat_start | ( | void | ) |
Definition at line 629 of file pgstat.c.
References ClosePostmasterPorts(), ereport, errmsg(), fork_process(), last_pgstat_start_time, LOG, NULL, on_exit_reset(), PGINVALID_SOCKET, PGSharedMemoryDetach(), PGSTAT_RESTART_INTERVAL, PgstatCollectorMain(), and pgStatSock.
Referenced by reaper(), ServerLoop(), and sigusr1_handler().
{
time_t curtime;
pid_t pgStatPid;
/*
* Check that the socket is there, else pgstat_init failed and we can do
* nothing useful.
*/
if (pgStatSock == PGINVALID_SOCKET)
return 0;
/*
* Do nothing if too soon since last collector start. This is a safety
* valve to protect against continuous respawn attempts if the collector
* is dying immediately at launch. Note that since we will be re-called
* from the postmaster main loop, we will get another chance later.
*/
curtime = time(NULL);
if ((unsigned int) (curtime - last_pgstat_start_time) <
(unsigned int) PGSTAT_RESTART_INTERVAL)
return 0;
last_pgstat_start_time = curtime;
/*
* Okay, fork off the collector.
*/
#ifdef EXEC_BACKEND
switch ((pgStatPid = pgstat_forkexec()))
#else
switch ((pgStatPid = fork_process()))
#endif
{
case -1:
ereport(LOG,
(errmsg("could not fork statistics collector: %m")));
return 0;
#ifndef EXEC_BACKEND
case 0:
/* in postmaster child ... */
/* Close the postmaster's sockets */
ClosePostmasterPorts(false);
/* Lose the postmaster's on-exit routines */
on_exit_reset();
/* Drop our connection to postmaster's shared memory, as well */
PGSharedMemoryDetach();
PgstatCollectorMain(0, NULL);
break;
#endif
default:
return (int) pgStatPid;
}
/* shouldn't get here */
return 0;
}
| void pgstat_twophase_postabort | ( | TransactionId | xid, | |
| uint16 | info, | |||
| void * | recdata, | |||
| uint32 | len | |||
| ) |
Definition at line 2119 of file pgstat.c.
References get_tabstat_entry(), PgStat_TableStatus::t_counts, PgStat_TableCounts::t_delta_dead_tuples, TwoPhasePgStatRecord::t_id, TwoPhasePgStatRecord::t_shared, PgStat_TableCounts::t_tuples_deleted, PgStat_TableCounts::t_tuples_inserted, PgStat_TableCounts::t_tuples_updated, TwoPhasePgStatRecord::tuples_deleted, TwoPhasePgStatRecord::tuples_inserted, and TwoPhasePgStatRecord::tuples_updated.
{
TwoPhasePgStatRecord *rec = (TwoPhasePgStatRecord *) recdata;
PgStat_TableStatus *pgstat_info;
/* Find or create a tabstat entry for the rel */
pgstat_info = get_tabstat_entry(rec->t_id, rec->t_shared);
/* Same math as in AtEOXact_PgStat, abort case */
pgstat_info->t_counts.t_tuples_inserted += rec->tuples_inserted;
pgstat_info->t_counts.t_tuples_updated += rec->tuples_updated;
pgstat_info->t_counts.t_tuples_deleted += rec->tuples_deleted;
pgstat_info->t_counts.t_delta_dead_tuples +=
rec->tuples_inserted + rec->tuples_updated;
}
| void pgstat_twophase_postcommit | ( | TransactionId | xid, | |
| uint16 | info, | |||
| void * | recdata, | |||
| uint32 | len | |||
| ) |
Definition at line 2090 of file pgstat.c.
References get_tabstat_entry(), PgStat_TableCounts::t_changed_tuples, PgStat_TableStatus::t_counts, PgStat_TableCounts::t_delta_dead_tuples, PgStat_TableCounts::t_delta_live_tuples, TwoPhasePgStatRecord::t_id, TwoPhasePgStatRecord::t_shared, PgStat_TableCounts::t_tuples_deleted, PgStat_TableCounts::t_tuples_inserted, PgStat_TableCounts::t_tuples_updated, TwoPhasePgStatRecord::tuples_deleted, TwoPhasePgStatRecord::tuples_inserted, and TwoPhasePgStatRecord::tuples_updated.
{
TwoPhasePgStatRecord *rec = (TwoPhasePgStatRecord *) recdata;
PgStat_TableStatus *pgstat_info;
/* Find or create a tabstat entry for the rel */
pgstat_info = get_tabstat_entry(rec->t_id, rec->t_shared);
/* Same math as in AtEOXact_PgStat, commit case */
pgstat_info->t_counts.t_tuples_inserted += rec->tuples_inserted;
pgstat_info->t_counts.t_tuples_updated += rec->tuples_updated;
pgstat_info->t_counts.t_tuples_deleted += rec->tuples_deleted;
pgstat_info->t_counts.t_delta_live_tuples +=
rec->tuples_inserted - rec->tuples_deleted;
pgstat_info->t_counts.t_delta_dead_tuples +=
rec->tuples_updated + rec->tuples_deleted;
pgstat_info->t_counts.t_changed_tuples +=
rec->tuples_inserted + rec->tuples_updated +
rec->tuples_deleted;
}
| void pgstat_update_heap_dead_tuples | ( | Relation | rel, | |
| int | delta | |||
| ) |
Definition at line 1838 of file pgstat.c.
References NULL, RelationData::pgstat_info, PgStat_TableStatus::t_counts, and PgStat_TableCounts::t_delta_dead_tuples.
Referenced by heap_page_prune().
{
PgStat_TableStatus *pgstat_info = rel->pgstat_info;
if (pgstat_info != NULL)
pgstat_info->t_counts.t_delta_dead_tuples -= delta;
}
| void pgstat_vacuum_stat | ( | void | ) |
Definition at line 911 of file pgstat.c.
References backend_read_statsfile(), CHECK_FOR_INTERRUPTS, PgStat_StatDBEntry::databaseid, DatabaseRelationId, PgStat_StatFuncEntry::functionid, PgStat_StatDBEntry::functions, hash_destroy(), HASH_FIND, hash_get_num_entries(), hash_search(), hash_seq_init(), hash_seq_search(), PgStat_MsgFuncpurge::m_databaseid, PgStat_MsgTabpurge::m_databaseid, PgStat_MsgFuncpurge::m_functionid, PgStat_MsgFuncpurge::m_hdr, PgStat_MsgTabpurge::m_hdr, PgStat_MsgFuncpurge::m_nentries, PgStat_MsgTabpurge::m_nentries, PgStat_MsgTabpurge::m_tableid, MyDatabaseId, NULL, offsetof, OidIsValid, PGINVALID_SOCKET, pgstat_collect_oids(), pgstat_drop_database(), PGSTAT_MTYPE_FUNCPURGE, PGSTAT_MTYPE_TABPURGE, PGSTAT_NUM_FUNCPURGE, PGSTAT_NUM_TABPURGE, pgstat_send(), pgstat_setheader(), pgStatSock, ProcedureRelationId, RelationRelationId, PgStat_StatTabEntry::tableid, and PgStat_StatDBEntry::tables.
Referenced by do_autovacuum(), and vacuum().
{
HTAB *htab;
PgStat_MsgTabpurge msg;
PgStat_MsgFuncpurge f_msg;
HASH_SEQ_STATUS hstat;
PgStat_StatDBEntry *dbentry;
PgStat_StatTabEntry *tabentry;
PgStat_StatFuncEntry *funcentry;
int len;
if (pgStatSock == PGINVALID_SOCKET)
return;
/*
* If not done for this transaction, read the statistics collector stats
* file into some hash tables.
*/
backend_read_statsfile();
/*
* Read pg_database and make a list of OIDs of all existing databases
*/
htab = pgstat_collect_oids(DatabaseRelationId);
/*
* Search the database hash table for dead databases and tell the
* collector to drop them.
*/
hash_seq_init(&hstat, pgStatDBHash);
while ((dbentry = (PgStat_StatDBEntry *) hash_seq_search(&hstat)) != NULL)
{
Oid dbid = dbentry->databaseid;
CHECK_FOR_INTERRUPTS();
/* the DB entry for shared tables (with InvalidOid) is never dropped */
if (OidIsValid(dbid) &&
hash_search(htab, (void *) &dbid, HASH_FIND, NULL) == NULL)
pgstat_drop_database(dbid);
}
/* Clean up */
hash_destroy(htab);
/*
* Lookup our own database entry; if not found, nothing more to do.
*/
dbentry = (PgStat_StatDBEntry *) hash_search(pgStatDBHash,
(void *) &MyDatabaseId,
HASH_FIND, NULL);
if (dbentry == NULL || dbentry->tables == NULL)
return;
/*
* Similarly to above, make a list of all known relations in this DB.
*/
htab = pgstat_collect_oids(RelationRelationId);
/*
* Initialize our messages table counter to zero
*/
msg.m_nentries = 0;
/*
* Check for all tables listed in stats hashtable if they still exist.
*/
hash_seq_init(&hstat, dbentry->tables);
while ((tabentry = (PgStat_StatTabEntry *) hash_seq_search(&hstat)) != NULL)
{
Oid tabid = tabentry->tableid;
CHECK_FOR_INTERRUPTS();
if (hash_search(htab, (void *) &tabid, HASH_FIND, NULL) != NULL)
continue;
/*
* Not there, so add this table's Oid to the message
*/
msg.m_tableid[msg.m_nentries++] = tabid;
/*
* If the message is full, send it out and reinitialize to empty
*/
if (msg.m_nentries >= PGSTAT_NUM_TABPURGE)
{
len = offsetof(PgStat_MsgTabpurge, m_tableid[0])
+msg.m_nentries * sizeof(Oid);
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_TABPURGE);
msg.m_databaseid = MyDatabaseId;
pgstat_send(&msg, len);
msg.m_nentries = 0;
}
}
/*
* Send the rest
*/
if (msg.m_nentries > 0)
{
len = offsetof(PgStat_MsgTabpurge, m_tableid[0])
+msg.m_nentries * sizeof(Oid);
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_TABPURGE);
msg.m_databaseid = MyDatabaseId;
pgstat_send(&msg, len);
}
/* Clean up */
hash_destroy(htab);
/*
* Now repeat the above steps for functions. However, we needn't bother
* in the common case where no function stats are being collected.
*/
if (dbentry->functions != NULL &&
hash_get_num_entries(dbentry->functions) > 0)
{
htab = pgstat_collect_oids(ProcedureRelationId);
pgstat_setheader(&f_msg.m_hdr, PGSTAT_MTYPE_FUNCPURGE);
f_msg.m_databaseid = MyDatabaseId;
f_msg.m_nentries = 0;
hash_seq_init(&hstat, dbentry->functions);
while ((funcentry = (PgStat_StatFuncEntry *) hash_seq_search(&hstat)) != NULL)
{
Oid funcid = funcentry->functionid;
CHECK_FOR_INTERRUPTS();
if (hash_search(htab, (void *) &funcid, HASH_FIND, NULL) != NULL)
continue;
/*
* Not there, so add this function's Oid to the message
*/
f_msg.m_functionid[f_msg.m_nentries++] = funcid;
/*
* If the message is full, send it out and reinitialize to empty
*/
if (f_msg.m_nentries >= PGSTAT_NUM_FUNCPURGE)
{
len = offsetof(PgStat_MsgFuncpurge, m_functionid[0])
+f_msg.m_nentries * sizeof(Oid);
pgstat_send(&f_msg, len);
f_msg.m_nentries = 0;
}
}
/*
* Send the rest
*/
if (f_msg.m_nentries > 0)
{
len = offsetof(PgStat_MsgFuncpurge, m_functionid[0])
+f_msg.m_nentries * sizeof(Oid);
pgstat_send(&f_msg, len);
}
hash_destroy(htab);
}
}
| void PostPrepare_PgStat | ( | void | ) |
Definition at line 2057 of file pgstat.c.
References PgStat_SubXactStatus::first, PgStat_TableXactStatus::next, NULL, PgStat_TableXactStatus::parent, pgstat_clear_snapshot(), PgStat_TableStatus::trans, and trans.
Referenced by PrepareTransaction().
{
PgStat_SubXactStatus *xact_state;
/*
* 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;
for (trans = xact_state->first; trans != NULL; trans = trans->next)
{
PgStat_TableStatus *tabstat;
tabstat = trans->parent;
tabstat->trans = NULL;
}
}
pgStatXactStack = NULL;
/* Make sure any stats snapshot is thrown away */
pgstat_clear_snapshot();
}
Definition at line 129 of file pgstat.c.
Referenced by AbsorbFsyncRequests(), BgBufferSync(), BufferSync(), CheckpointerMain(), and LogCheckpointEnd().
| char* pgstat_stat_directory |
Definition at line 120 of file pgstat.c.
Referenced by assign_pgstat_temp_directory(), get_dbstat_filename(), pgstat_reset_all(), and pgstat_reset_remove_files().
| char* pgstat_stat_filename |
Definition at line 121 of file pgstat.c.
Referenced by assign_pgstat_temp_directory(), pgstat_read_db_statsfile_timestamp(), pgstat_read_statsfiles(), and pgstat_write_statsfiles().
| char* pgstat_stat_tmpname |
Definition at line 122 of file pgstat.c.
Referenced by assign_pgstat_temp_directory(), and pgstat_write_statsfiles().
Definition at line 111 of file pgstat.c.
Referenced by pgstat_report_activity(), pgstat_report_waiting(), and pgstat_report_xact_timestamp().
| PGDLLIMPORT int pgstat_track_activity_query_size |
Definition at line 114 of file pgstat.c.
Referenced by BackendStatusShmemSize(), CreateSharedBackendStatus(), pgss_memsize(), pgss_shmem_startup(), pgstat_bestart(), pgstat_get_crashed_backend_activity(), pgstat_read_current_status(), and pgstat_report_activity().
Definition at line 112 of file pgstat.c.
Referenced by autovac_init(), AutoVacuumingActive(), pgstat_initstats(), pgstat_report_analyze(), pgstat_report_deadlock(), pgstat_report_recovery_conflict(), pgstat_report_tempfile(), and pgstat_report_vacuum().
Definition at line 197 of file pgstat.c.
Referenced by pgstat_send_tabstat().
Definition at line 198 of file pgstat.c.
Referenced by pgstat_send_tabstat().
1.7.1