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tcopprot.h File Reference
#include "nodes/params.h"
#include "nodes/plannodes.h"
#include "storage/procsignal.h"
#include "utils/guc.h"
#include "utils/queryenvironment.h"
Include dependency graph for tcopprot.h:
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Macros

#define RESTRICT_RELKIND_VIEW   0x01
 
#define RESTRICT_RELKIND_FOREIGN_TABLE   0x02
 

Enumerations

enum  LogStmtLevel { LOGSTMT_NONE , LOGSTMT_DDL , LOGSTMT_MOD , LOGSTMT_ALL }
 

Functions

Listpg_parse_query (const char *query_string)
 
Listpg_rewrite_query (Query *query)
 
Listpg_analyze_and_rewrite_fixedparams (RawStmt *parsetree, const char *query_string, const Oid *paramTypes, int numParams, QueryEnvironment *queryEnv)
 
Listpg_analyze_and_rewrite_varparams (RawStmt *parsetree, const char *query_string, Oid **paramTypes, int *numParams, QueryEnvironment *queryEnv)
 
Listpg_analyze_and_rewrite_withcb (RawStmt *parsetree, const char *query_string, ParserSetupHook parserSetup, void *parserSetupArg, QueryEnvironment *queryEnv)
 
PlannedStmtpg_plan_query (Query *querytree, const char *query_string, int cursorOptions, ParamListInfo boundParams)
 
Listpg_plan_queries (List *querytrees, const char *query_string, int cursorOptions, ParamListInfo boundParams)
 
void die (SIGNAL_ARGS)
 
pg_noreturn void quickdie (SIGNAL_ARGS)
 
void StatementCancelHandler (SIGNAL_ARGS)
 
pg_noreturn void FloatExceptionHandler (SIGNAL_ARGS)
 
void HandleRecoveryConflictInterrupt (ProcSignalReason reason)
 
void ProcessClientReadInterrupt (bool blocked)
 
void ProcessClientWriteInterrupt (bool blocked)
 
void process_postgres_switches (int argc, char *argv[], GucContext ctx, const char **dbname)
 
pg_noreturn void PostgresSingleUserMain (int argc, char *argv[], const char *username)
 
pg_noreturn void PostgresMain (const char *dbname, const char *username)
 
void ResetUsage (void)
 
void ShowUsage (const char *title)
 
int check_log_duration (char *msec_str, bool was_logged)
 
void set_debug_options (int debug_flag, GucContext context, GucSource source)
 
bool set_plan_disabling_options (const char *arg, GucContext context, GucSource source)
 
const char * get_stats_option_name (const char *arg)
 

Variables

PGDLLIMPORT CommandDest whereToSendOutput
 
PGDLLIMPORT const char * debug_query_string
 
PGDLLIMPORT int PostAuthDelay
 
PGDLLIMPORT int client_connection_check_interval
 
PGDLLIMPORT bool Log_disconnections
 
PGDLLIMPORT int log_statement
 
PGDLLIMPORT int restrict_nonsystem_relation_kind
 

Macro Definition Documentation

◆ RESTRICT_RELKIND_FOREIGN_TABLE

#define RESTRICT_RELKIND_FOREIGN_TABLE   0x02

Definition at line 44 of file tcopprot.h.

◆ RESTRICT_RELKIND_VIEW

#define RESTRICT_RELKIND_VIEW   0x01

Definition at line 43 of file tcopprot.h.

Enumeration Type Documentation

◆ LogStmtLevel

Enumerator
LOGSTMT_NONE 
LOGSTMT_DDL 
LOGSTMT_MOD 
LOGSTMT_ALL 

Definition at line 31 of file tcopprot.h.

32{
33 LOGSTMT_NONE, /* log no statements */
34 LOGSTMT_DDL, /* log data definition statements */
35 LOGSTMT_MOD, /* log modification statements, plus DDL */
36 LOGSTMT_ALL, /* log all statements */
LogStmtLevel
Definition: tcopprot.h:32
@ LOGSTMT_NONE
Definition: tcopprot.h:33
@ LOGSTMT_MOD
Definition: tcopprot.h:35
@ LOGSTMT_DDL
Definition: tcopprot.h:34
@ LOGSTMT_ALL
Definition: tcopprot.h:36

Function Documentation

◆ check_log_duration()

int check_log_duration ( char *  msec_str,
bool  was_logged 
)

Definition at line 2425 of file postgres.c.

2426{
2429 {
2430 long secs;
2431 int usecs;
2432 int msecs;
2433 bool exceeded_duration;
2434 bool exceeded_sample_duration;
2435 bool in_sample = false;
2436
2439 &secs, &usecs);
2440 msecs = usecs / 1000;
2441
2442 /*
2443 * This odd-looking test for log_min_duration_* being exceeded is
2444 * designed to avoid integer overflow with very long durations: don't
2445 * compute secs * 1000 until we've verified it will fit in int.
2446 */
2447 exceeded_duration = (log_min_duration_statement == 0 ||
2449 (secs > log_min_duration_statement / 1000 ||
2450 secs * 1000 + msecs >= log_min_duration_statement)));
2451
2452 exceeded_sample_duration = (log_min_duration_sample == 0 ||
2454 (secs > log_min_duration_sample / 1000 ||
2455 secs * 1000 + msecs >= log_min_duration_sample)));
2456
2457 /*
2458 * Do not log if log_statement_sample_rate = 0. Log a sample if
2459 * log_statement_sample_rate <= 1 and avoid unnecessary PRNG call if
2460 * log_statement_sample_rate = 1.
2461 */
2462 if (exceeded_sample_duration)
2463 in_sample = log_statement_sample_rate != 0 &&
2466
2467 if (exceeded_duration || in_sample || log_duration || xact_is_sampled)
2468 {
2469 snprintf(msec_str, 32, "%ld.%03d",
2470 secs * 1000 + msecs, usecs % 1000);
2471 if ((exceeded_duration || in_sample || xact_is_sampled) && !was_logged)
2472 return 2;
2473 else
2474 return 1;
2475 }
2476 }
2477
2478 return 0;
2479}
void TimestampDifference(TimestampTz start_time, TimestampTz stop_time, long *secs, int *microsecs)
Definition: timestamp.c:1721
TimestampTz GetCurrentTimestamp(void)
Definition: timestamp.c:1645
int log_min_duration_statement
Definition: guc_tables.c:542
int log_min_duration_sample
Definition: guc_tables.c:541
double log_statement_sample_rate
Definition: guc_tables.c:546
bool log_duration
Definition: guc_tables.c:507
double pg_prng_double(pg_prng_state *state)
Definition: pg_prng.c:268
pg_prng_state pg_global_prng_state
Definition: pg_prng.c:34
#define snprintf
Definition: port.h:239
TimestampTz GetCurrentStatementStartTimestamp(void)
Definition: xact.c:879
bool xact_is_sampled
Definition: xact.c:296

References GetCurrentStatementStartTimestamp(), GetCurrentTimestamp(), log_duration, log_min_duration_sample, log_min_duration_statement, log_statement_sample_rate, pg_global_prng_state, pg_prng_double(), snprintf, TimestampDifference(), and xact_is_sampled.

Referenced by exec_bind_message(), exec_execute_message(), exec_parse_message(), exec_simple_query(), and HandleFunctionRequest().

◆ die()

void die ( SIGNAL_ARGS  )

Definition at line 3028 of file postgres.c.

3029{
3030 /* Don't joggle the elbow of proc_exit */
3032 {
3033 InterruptPending = true;
3034 ProcDiePending = true;
3035 }
3036
3037 /* for the cumulative stats system */
3039
3040 /* If we're still here, waken anything waiting on the process latch */
3042
3043 /*
3044 * If we're in single user mode, we want to quit immediately - we can't
3045 * rely on latches as they wouldn't work when stdin/stdout is a file.
3046 * Rather ugly, but it's unlikely to be worthwhile to invest much more
3047 * effort just for the benefit of single user mode.
3048 */
3051}
@ DestRemote
Definition: dest.h:89
volatile sig_atomic_t InterruptPending
Definition: globals.c:32
struct Latch * MyLatch
Definition: globals.c:64
volatile sig_atomic_t ProcDiePending
Definition: globals.c:34
bool proc_exit_inprogress
Definition: ipc.c:40
void SetLatch(Latch *latch)
Definition: latch.c:288
@ DISCONNECT_KILLED
Definition: pgstat.h:58
SessionEndType pgStatSessionEndCause
CommandDest whereToSendOutput
Definition: postgres.c:91
static bool DoingCommandRead
Definition: postgres.c:136
void ProcessInterrupts(void)
Definition: postgres.c:3300

References DestRemote, DISCONNECT_KILLED, DoingCommandRead, InterruptPending, MyLatch, pgStatSessionEndCause, proc_exit_inprogress, ProcDiePending, ProcessInterrupts(), SetLatch(), and whereToSendOutput.

Referenced by PostgresMain().

◆ FloatExceptionHandler()

pg_noreturn void FloatExceptionHandler ( SIGNAL_ARGS  )

Definition at line 3075 of file postgres.c.

3076{
3077 /* We're not returning, so no need to save errno */
3078 ereport(ERROR,
3079 (errcode(ERRCODE_FLOATING_POINT_EXCEPTION),
3080 errmsg("floating-point exception"),
3081 errdetail("An invalid floating-point operation was signaled. "
3082 "This probably means an out-of-range result or an "
3083 "invalid operation, such as division by zero.")));
3084}
int errdetail(const char *fmt,...)
Definition: elog.c:1204
int errcode(int sqlerrcode)
Definition: elog.c:854
int errmsg(const char *fmt,...)
Definition: elog.c:1071
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:149

References ereport, errcode(), errdetail(), errmsg(), and ERROR.

Referenced by AutoVacLauncherMain(), AutoVacWorkerMain(), BackgroundWorkerMain(), plperl_init_interp(), PostgresMain(), and ReplSlotSyncWorkerMain().

◆ get_stats_option_name()

const char * get_stats_option_name ( const char *  arg)

Definition at line 3755 of file postgres.c.

3756{
3757 switch (arg[0])
3758 {
3759 case 'p':
3760 if (optarg[1] == 'a') /* "parser" */
3761 return "log_parser_stats";
3762 else if (optarg[1] == 'l') /* "planner" */
3763 return "log_planner_stats";
3764 break;
3765
3766 case 'e': /* "executor" */
3767 return "log_executor_stats";
3768 break;
3769 }
3770
3771 return NULL;
3772}
void * arg
PGDLLIMPORT char * optarg
Definition: getopt.c:53

References arg, and optarg.

Referenced by PostmasterMain(), and process_postgres_switches().

◆ HandleRecoveryConflictInterrupt()

void HandleRecoveryConflictInterrupt ( ProcSignalReason  reason)

Definition at line 3091 of file postgres.c.

3092{
3093 RecoveryConflictPendingReasons[reason] = true;
3095 InterruptPending = true;
3096 /* latch will be set by procsignal_sigusr1_handler */
3097}
static volatile sig_atomic_t RecoveryConflictPendingReasons[NUM_PROCSIGNALS]
Definition: postgres.c:159
static volatile sig_atomic_t RecoveryConflictPending
Definition: postgres.c:158

References InterruptPending, RecoveryConflictPending, and RecoveryConflictPendingReasons.

Referenced by procsignal_sigusr1_handler().

◆ pg_analyze_and_rewrite_fixedparams()

List * pg_analyze_and_rewrite_fixedparams ( RawStmt parsetree,
const char *  query_string,
const Oid paramTypes,
int  numParams,
QueryEnvironment queryEnv 
)

Definition at line 665 of file postgres.c.

670{
671 Query *query;
672 List *querytree_list;
673
674 TRACE_POSTGRESQL_QUERY_REWRITE_START(query_string);
675
676 /*
677 * (1) Perform parse analysis.
678 */
680 ResetUsage();
681
682 query = parse_analyze_fixedparams(parsetree, query_string, paramTypes, numParams,
683 queryEnv);
684
686 ShowUsage("PARSE ANALYSIS STATISTICS");
687
688 /*
689 * (2) Rewrite the queries, as necessary
690 */
691 querytree_list = pg_rewrite_query(query);
692
693 TRACE_POSTGRESQL_QUERY_REWRITE_DONE(query_string);
694
695 return querytree_list;
696}
bool log_parser_stats
Definition: guc_tables.c:519
Query * parse_analyze_fixedparams(RawStmt *parseTree, const char *sourceText, const Oid *paramTypes, int numParams, QueryEnvironment *queryEnv)
Definition: analyze.c:105
List * pg_rewrite_query(Query *query)
Definition: postgres.c:798
void ShowUsage(const char *title)
Definition: postgres.c:5064
void ResetUsage(void)
Definition: postgres.c:5057
Definition: pg_list.h:54

References log_parser_stats, parse_analyze_fixedparams(), pg_rewrite_query(), ResetUsage(), and ShowUsage().

Referenced by _SPI_execute_plan(), _SPI_prepare_plan(), BeginCopyTo(), exec_simple_query(), execute_sql_string(), and RevalidateCachedQuery().

◆ pg_analyze_and_rewrite_varparams()

List * pg_analyze_and_rewrite_varparams ( RawStmt parsetree,
const char *  query_string,
Oid **  paramTypes,
int *  numParams,
QueryEnvironment queryEnv 
)

Definition at line 704 of file postgres.c.

709{
710 Query *query;
711 List *querytree_list;
712
713 TRACE_POSTGRESQL_QUERY_REWRITE_START(query_string);
714
715 /*
716 * (1) Perform parse analysis.
717 */
719 ResetUsage();
720
721 query = parse_analyze_varparams(parsetree, query_string, paramTypes, numParams,
722 queryEnv);
723
724 /*
725 * Check all parameter types got determined.
726 */
727 for (int i = 0; i < *numParams; i++)
728 {
729 Oid ptype = (*paramTypes)[i];
730
731 if (ptype == InvalidOid || ptype == UNKNOWNOID)
733 (errcode(ERRCODE_INDETERMINATE_DATATYPE),
734 errmsg("could not determine data type of parameter $%d",
735 i + 1)));
736 }
737
739 ShowUsage("PARSE ANALYSIS STATISTICS");
740
741 /*
742 * (2) Rewrite the queries, as necessary
743 */
744 querytree_list = pg_rewrite_query(query);
745
746 TRACE_POSTGRESQL_QUERY_REWRITE_DONE(query_string);
747
748 return querytree_list;
749}
int i
Definition: isn.c:77
Query * parse_analyze_varparams(RawStmt *parseTree, const char *sourceText, Oid **paramTypes, int *numParams, QueryEnvironment *queryEnv)
Definition: analyze.c:145
#define InvalidOid
Definition: postgres_ext.h:35
unsigned int Oid
Definition: postgres_ext.h:30

References ereport, errcode(), errmsg(), ERROR, i, InvalidOid, log_parser_stats, parse_analyze_varparams(), pg_rewrite_query(), ResetUsage(), and ShowUsage().

Referenced by exec_parse_message(), and PrepareQuery().

◆ pg_analyze_and_rewrite_withcb()

List * pg_analyze_and_rewrite_withcb ( RawStmt parsetree,
const char *  query_string,
ParserSetupHook  parserSetup,
void *  parserSetupArg,
QueryEnvironment queryEnv 
)

Definition at line 758 of file postgres.c.

763{
764 Query *query;
765 List *querytree_list;
766
767 TRACE_POSTGRESQL_QUERY_REWRITE_START(query_string);
768
769 /*
770 * (1) Perform parse analysis.
771 */
773 ResetUsage();
774
775 query = parse_analyze_withcb(parsetree, query_string, parserSetup, parserSetupArg,
776 queryEnv);
777
779 ShowUsage("PARSE ANALYSIS STATISTICS");
780
781 /*
782 * (2) Rewrite the queries, as necessary
783 */
784 querytree_list = pg_rewrite_query(query);
785
786 TRACE_POSTGRESQL_QUERY_REWRITE_DONE(query_string);
787
788 return querytree_list;
789}
Query * parse_analyze_withcb(RawStmt *parseTree, const char *sourceText, ParserSetupHook parserSetup, void *parserSetupArg, QueryEnvironment *queryEnv)
Definition: analyze.c:186

References log_parser_stats, parse_analyze_withcb(), pg_rewrite_query(), ResetUsage(), and ShowUsage().

Referenced by _SPI_execute_plan(), _SPI_prepare_plan(), fmgr_sql_validator(), inline_set_returning_function(), prepare_next_query(), and RevalidateCachedQuery().

◆ pg_parse_query()

List * pg_parse_query ( const char *  query_string)

Definition at line 603 of file postgres.c.

604{
605 List *raw_parsetree_list;
606
607 TRACE_POSTGRESQL_QUERY_PARSE_START(query_string);
608
610 ResetUsage();
611
612 raw_parsetree_list = raw_parser(query_string, RAW_PARSE_DEFAULT);
613
615 ShowUsage("PARSER STATISTICS");
616
617#ifdef DEBUG_NODE_TESTS_ENABLED
618
619 /* Optional debugging check: pass raw parsetrees through copyObject() */
620 if (Debug_copy_parse_plan_trees)
621 {
622 List *new_list = copyObject(raw_parsetree_list);
623
624 /* This checks both copyObject() and the equal() routines... */
625 if (!equal(new_list, raw_parsetree_list))
626 elog(WARNING, "copyObject() failed to produce an equal raw parse tree");
627 else
628 raw_parsetree_list = new_list;
629 }
630
631 /*
632 * Optional debugging check: pass raw parsetrees through
633 * outfuncs/readfuncs
634 */
635 if (Debug_write_read_parse_plan_trees)
636 {
637 char *str = nodeToStringWithLocations(raw_parsetree_list);
638 List *new_list = stringToNodeWithLocations(str);
639
640 pfree(str);
641 /* This checks both outfuncs/readfuncs and the equal() routines... */
642 if (!equal(new_list, raw_parsetree_list))
643 elog(WARNING, "outfuncs/readfuncs failed to produce an equal raw parse tree");
644 else
645 raw_parsetree_list = new_list;
646 }
647
648#endif /* DEBUG_NODE_TESTS_ENABLED */
649
650 TRACE_POSTGRESQL_QUERY_PARSE_DONE(query_string);
651
652 return raw_parsetree_list;
653}
List * raw_parser(const char *str, RawParseMode mode)
Definition: parser.c:42
#define WARNING
Definition: elog.h:36
#define elog(elevel,...)
Definition: elog.h:226
bool equal(const void *a, const void *b)
Definition: equalfuncs.c:223
const char * str
static List * new_list(NodeTag type, int min_size)
Definition: list.c:91
void pfree(void *pointer)
Definition: mcxt.c:2147
#define copyObject(obj)
Definition: nodes.h:230
char * nodeToStringWithLocations(const void *obj)
Definition: outfuncs.c:803
@ RAW_PARSE_DEFAULT
Definition: parser.h:39

References copyObject, elog, equal(), log_parser_stats, new_list(), nodeToStringWithLocations(), pfree(), RAW_PARSE_DEFAULT, raw_parser(), ResetUsage(), ShowUsage(), str, and WARNING.

Referenced by exec_parse_message(), exec_simple_query(), execute_sql_string(), fmgr_sql_validator(), ImportForeignSchema(), inline_function(), inline_set_returning_function(), and sql_compile_callback().

◆ pg_plan_queries()

List * pg_plan_queries ( List querytrees,
const char *  query_string,
int  cursorOptions,
ParamListInfo  boundParams 
)

Definition at line 970 of file postgres.c.

972{
973 List *stmt_list = NIL;
974 ListCell *query_list;
975
976 foreach(query_list, querytrees)
977 {
978 Query *query = lfirst_node(Query, query_list);
980
981 if (query->commandType == CMD_UTILITY)
982 {
983 /* Utility commands require no planning. */
985 stmt->commandType = CMD_UTILITY;
986 stmt->canSetTag = query->canSetTag;
987 stmt->utilityStmt = query->utilityStmt;
988 stmt->stmt_location = query->stmt_location;
989 stmt->stmt_len = query->stmt_len;
990 stmt->queryId = query->queryId;
991 }
992 else
993 {
994 stmt = pg_plan_query(query, query_string, cursorOptions,
995 boundParams);
996 }
997
998 stmt_list = lappend(stmt_list, stmt);
999 }
1000
1001 return stmt_list;
1002}
#define stmt
Definition: indent_codes.h:59
List * lappend(List *list, void *datum)
Definition: list.c:339
@ CMD_UTILITY
Definition: nodes.h:276
#define makeNode(_type_)
Definition: nodes.h:161
#define lfirst_node(type, lc)
Definition: pg_list.h:176
#define NIL
Definition: pg_list.h:68
PlannedStmt * pg_plan_query(Query *querytree, const char *query_string, int cursorOptions, ParamListInfo boundParams)
Definition: postgres.c:882
CmdType commandType
Definition: parsenodes.h:121
Node * utilityStmt
Definition: parsenodes.h:136
ParseLoc stmt_location
Definition: parsenodes.h:249

References CMD_UTILITY, Query::commandType, lappend(), lfirst_node, makeNode, NIL, pg_plan_query(), stmt, Query::stmt_location, and Query::utilityStmt.

Referenced by BuildCachedPlan(), exec_simple_query(), execute_sql_string(), and UpdateCachedPlan().

◆ pg_plan_query()

PlannedStmt * pg_plan_query ( Query querytree,
const char *  query_string,
int  cursorOptions,
ParamListInfo  boundParams 
)

Definition at line 882 of file postgres.c.

884{
886
887 /* Utility commands have no plans. */
888 if (querytree->commandType == CMD_UTILITY)
889 return NULL;
890
891 /* Planner must have a snapshot in case it calls user-defined functions. */
893
894 TRACE_POSTGRESQL_QUERY_PLAN_START();
895
897 ResetUsage();
898
899 /* call the optimizer */
900 plan = planner(querytree, query_string, cursorOptions, boundParams);
901
903 ShowUsage("PLANNER STATISTICS");
904
905#ifdef DEBUG_NODE_TESTS_ENABLED
906
907 /* Optional debugging check: pass plan tree through copyObject() */
908 if (Debug_copy_parse_plan_trees)
909 {
910 PlannedStmt *new_plan = copyObject(plan);
911
912 /*
913 * equal() currently does not have routines to compare Plan nodes, so
914 * don't try to test equality here. Perhaps fix someday?
915 */
916#ifdef NOT_USED
917 /* This checks both copyObject() and the equal() routines... */
918 if (!equal(new_plan, plan))
919 elog(WARNING, "copyObject() failed to produce an equal plan tree");
920 else
921#endif
922 plan = new_plan;
923 }
924
925 /* Optional debugging check: pass plan tree through outfuncs/readfuncs */
926 if (Debug_write_read_parse_plan_trees)
927 {
928 char *str;
929 PlannedStmt *new_plan;
930
932 new_plan = stringToNodeWithLocations(str);
933 pfree(str);
934
935 /*
936 * equal() currently does not have routines to compare Plan nodes, so
937 * don't try to test equality here. Perhaps fix someday?
938 */
939#ifdef NOT_USED
940 /* This checks both outfuncs/readfuncs and the equal() routines... */
941 if (!equal(new_plan, plan))
942 elog(WARNING, "outfuncs/readfuncs failed to produce an equal plan tree");
943 else
944#endif
945 plan = new_plan;
946 }
947
948#endif /* DEBUG_NODE_TESTS_ENABLED */
949
950 /*
951 * Print plan if debugging.
952 */
955
956 TRACE_POSTGRESQL_QUERY_PLAN_DONE();
957
958 return plan;
959}
Datum querytree(PG_FUNCTION_ARGS)
Definition: _int_bool.c:665
void elog_node_display(int lev, const char *title, const void *obj, bool pretty)
Definition: print.c:72
#define LOG
Definition: elog.h:31
bool Debug_print_plan
Definition: guc_tables.c:508
bool Debug_pretty_print
Definition: guc_tables.c:511
bool log_planner_stats
Definition: guc_tables.c:520
Assert(PointerIsAligned(start, uint64))
#define plan(x)
Definition: pg_regress.c:161
PlannedStmt * planner(Query *parse, const char *query_string, int cursorOptions, ParamListInfo boundParams)
Definition: planner.c:286
bool ActiveSnapshotSet(void)
Definition: snapmgr.c:799

References ActiveSnapshotSet(), Assert(), CMD_UTILITY, copyObject, Debug_pretty_print, Debug_print_plan, elog, elog_node_display(), equal(), LOG, log_planner_stats, nodeToStringWithLocations(), pfree(), plan, planner(), querytree(), ResetUsage(), ShowUsage(), str, and WARNING.

Referenced by BeginCopyTo(), ExecCreateTableAs(), PerformCursorOpen(), pg_plan_queries(), refresh_matview_datafill(), and standard_ExplainOneQuery().

◆ pg_rewrite_query()

List * pg_rewrite_query ( Query query)

Definition at line 798 of file postgres.c.

799{
800 List *querytree_list;
801
803 elog_node_display(LOG, "parse tree", query,
805
807 ResetUsage();
808
809 if (query->commandType == CMD_UTILITY)
810 {
811 /* don't rewrite utilities, just dump 'em into result list */
812 querytree_list = list_make1(query);
813 }
814 else
815 {
816 /* rewrite regular queries */
817 querytree_list = QueryRewrite(query);
818 }
819
821 ShowUsage("REWRITER STATISTICS");
822
823#ifdef DEBUG_NODE_TESTS_ENABLED
824
825 /* Optional debugging check: pass querytree through copyObject() */
826 if (Debug_copy_parse_plan_trees)
827 {
828 List *new_list;
829
830 new_list = copyObject(querytree_list);
831 /* This checks both copyObject() and the equal() routines... */
832 if (!equal(new_list, querytree_list))
833 elog(WARNING, "copyObject() failed to produce an equal rewritten parse tree");
834 else
835 querytree_list = new_list;
836 }
837
838 /* Optional debugging check: pass querytree through outfuncs/readfuncs */
839 if (Debug_write_read_parse_plan_trees)
840 {
841 List *new_list = NIL;
842 ListCell *lc;
843
844 foreach(lc, querytree_list)
845 {
846 Query *curr_query = lfirst_node(Query, lc);
847 char *str = nodeToStringWithLocations(curr_query);
848 Query *new_query = stringToNodeWithLocations(str);
849
850 /*
851 * queryId is not saved in stored rules, but we must preserve it
852 * here to avoid breaking pg_stat_statements.
853 */
854 new_query->queryId = curr_query->queryId;
855
856 new_list = lappend(new_list, new_query);
857 pfree(str);
858 }
859
860 /* This checks both outfuncs/readfuncs and the equal() routines... */
861 if (!equal(new_list, querytree_list))
862 elog(WARNING, "outfuncs/readfuncs failed to produce an equal rewritten parse tree");
863 else
864 querytree_list = new_list;
865 }
866
867#endif /* DEBUG_NODE_TESTS_ENABLED */
868
870 elog_node_display(LOG, "rewritten parse tree", querytree_list,
872
873 return querytree_list;
874}
bool Debug_print_rewritten
Definition: guc_tables.c:510
bool Debug_print_parse
Definition: guc_tables.c:509
#define list_make1(x1)
Definition: pg_list.h:212
List * QueryRewrite(Query *parsetree)

References CMD_UTILITY, Query::commandType, copyObject, Debug_pretty_print, Debug_print_parse, Debug_print_rewritten, elog, elog_node_display(), equal(), lappend(), lfirst_node, list_make1, LOG, log_parser_stats, new_list(), NIL, nodeToStringWithLocations(), pfree(), QueryRewrite(), ResetUsage(), ShowUsage(), str, and WARNING.

Referenced by fmgr_sql_validator(), inline_set_returning_function(), pg_analyze_and_rewrite_fixedparams(), pg_analyze_and_rewrite_varparams(), pg_analyze_and_rewrite_withcb(), prepare_next_query(), and RevalidateCachedQuery().

◆ PostgresMain()

pg_noreturn void PostgresMain ( const char *  dbname,
const char *  username 
)

Definition at line 4189 of file postgres.c.

4190{
4191 sigjmp_buf local_sigjmp_buf;
4192
4193 /* these must be volatile to ensure state is preserved across longjmp: */
4194 volatile bool send_ready_for_query = true;
4195 volatile bool idle_in_transaction_timeout_enabled = false;
4196 volatile bool idle_session_timeout_enabled = false;
4197
4198 Assert(dbname != NULL);
4199 Assert(username != NULL);
4200
4202
4203 /*
4204 * Set up signal handlers. (InitPostmasterChild or InitStandaloneProcess
4205 * has already set up BlockSig and made that the active signal mask.)
4206 *
4207 * Note that postmaster blocked all signals before forking child process,
4208 * so there is no race condition whereby we might receive a signal before
4209 * we have set up the handler.
4210 *
4211 * Also note: it's best not to use any signals that are SIG_IGNored in the
4212 * postmaster. If such a signal arrives before we are able to change the
4213 * handler to non-SIG_IGN, it'll get dropped. Instead, make a dummy
4214 * handler in the postmaster to reserve the signal. (Of course, this isn't
4215 * an issue for signals that are locally generated, such as SIGALRM and
4216 * SIGPIPE.)
4217 */
4218 if (am_walsender)
4219 WalSndSignals();
4220 else
4221 {
4223 pqsignal(SIGINT, StatementCancelHandler); /* cancel current query */
4224 pqsignal(SIGTERM, die); /* cancel current query and exit */
4225
4226 /*
4227 * In a postmaster child backend, replace SignalHandlerForCrashExit
4228 * with quickdie, so we can tell the client we're dying.
4229 *
4230 * In a standalone backend, SIGQUIT can be generated from the keyboard
4231 * easily, while SIGTERM cannot, so we make both signals do die()
4232 * rather than quickdie().
4233 */
4235 pqsignal(SIGQUIT, quickdie); /* hard crash time */
4236 else
4237 pqsignal(SIGQUIT, die); /* cancel current query and exit */
4238 InitializeTimeouts(); /* establishes SIGALRM handler */
4239
4240 /*
4241 * Ignore failure to write to frontend. Note: if frontend closes
4242 * connection, we will notice it and exit cleanly when control next
4243 * returns to outer loop. This seems safer than forcing exit in the
4244 * midst of output during who-knows-what operation...
4245 */
4246 pqsignal(SIGPIPE, SIG_IGN);
4248 pqsignal(SIGUSR2, SIG_IGN);
4250
4251 /*
4252 * Reset some signals that are accepted by postmaster but not by
4253 * backend
4254 */
4255 pqsignal(SIGCHLD, SIG_DFL); /* system() requires this on some
4256 * platforms */
4257 }
4258
4259 /* Early initialization */
4260 BaseInit();
4261
4262 /* We need to allow SIGINT, etc during the initial transaction */
4263 sigprocmask(SIG_SETMASK, &UnBlockSig, NULL);
4264
4265 /*
4266 * Generate a random cancel key, if this is a backend serving a
4267 * connection. InitPostgres() will advertise it in shared memory.
4268 */
4271 {
4272 int len;
4273
4274 len = (MyProcPort == NULL || MyProcPort->proto >= PG_PROTOCOL(3, 2))
4277 {
4278 ereport(ERROR,
4279 (errcode(ERRCODE_INTERNAL_ERROR),
4280 errmsg("could not generate random cancel key")));
4281 }
4283 }
4284
4285 /*
4286 * General initialization.
4287 *
4288 * NOTE: if you are tempted to add code in this vicinity, consider putting
4289 * it inside InitPostgres() instead. In particular, anything that
4290 * involves database access should be there, not here.
4291 *
4292 * Honor session_preload_libraries if not dealing with a WAL sender.
4293 */
4294 InitPostgres(dbname, InvalidOid, /* database to connect to */
4295 username, InvalidOid, /* role to connect as */
4297 NULL); /* no out_dbname */
4298
4299 /*
4300 * If the PostmasterContext is still around, recycle the space; we don't
4301 * need it anymore after InitPostgres completes.
4302 */
4304 {
4306 PostmasterContext = NULL;
4307 }
4308
4310
4311 /*
4312 * Now all GUC states are fully set up. Report them to client if
4313 * appropriate.
4314 */
4316
4317 /*
4318 * Also set up handler to log session end; we have to wait till now to be
4319 * sure Log_disconnections has its final value.
4320 */
4323
4325
4326 /* Perform initialization specific to a WAL sender process. */
4327 if (am_walsender)
4328 InitWalSender();
4329
4330 /*
4331 * Send this backend's cancellation info to the frontend.
4332 */
4334 {
4336
4340
4343 /* Need not flush since ReadyForQuery will do it. */
4344 }
4345
4346 /* Welcome banner for standalone case */
4348 printf("\nPostgreSQL stand-alone backend %s\n", PG_VERSION);
4349
4350 /*
4351 * Create the memory context we will use in the main loop.
4352 *
4353 * MessageContext is reset once per iteration of the main loop, ie, upon
4354 * completion of processing of each command message from the client.
4355 */
4357 "MessageContext",
4359
4360 /*
4361 * Create memory context and buffer used for RowDescription messages. As
4362 * SendRowDescriptionMessage(), via exec_describe_statement_message(), is
4363 * frequently executed for ever single statement, we don't want to
4364 * allocate a separate buffer every time.
4365 */
4367 "RowDescriptionContext",
4372
4373 /* Fire any defined login event triggers, if appropriate */
4375
4376 /*
4377 * POSTGRES main processing loop begins here
4378 *
4379 * If an exception is encountered, processing resumes here so we abort the
4380 * current transaction and start a new one.
4381 *
4382 * You might wonder why this isn't coded as an infinite loop around a
4383 * PG_TRY construct. The reason is that this is the bottom of the
4384 * exception stack, and so with PG_TRY there would be no exception handler
4385 * in force at all during the CATCH part. By leaving the outermost setjmp
4386 * always active, we have at least some chance of recovering from an error
4387 * during error recovery. (If we get into an infinite loop thereby, it
4388 * will soon be stopped by overflow of elog.c's internal state stack.)
4389 *
4390 * Note that we use sigsetjmp(..., 1), so that this function's signal mask
4391 * (to wit, UnBlockSig) will be restored when longjmp'ing to here. This
4392 * is essential in case we longjmp'd out of a signal handler on a platform
4393 * where that leaves the signal blocked. It's not redundant with the
4394 * unblock in AbortTransaction() because the latter is only called if we
4395 * were inside a transaction.
4396 */
4397
4398 if (sigsetjmp(local_sigjmp_buf, 1) != 0)
4399 {
4400 /*
4401 * NOTE: if you are tempted to add more code in this if-block,
4402 * consider the high probability that it should be in
4403 * AbortTransaction() instead. The only stuff done directly here
4404 * should be stuff that is guaranteed to apply *only* for outer-level
4405 * error recovery, such as adjusting the FE/BE protocol status.
4406 */
4407
4408 /* Since not using PG_TRY, must reset error stack by hand */
4409 error_context_stack = NULL;
4410
4411 /* Prevent interrupts while cleaning up */
4413
4414 /*
4415 * Forget any pending QueryCancel request, since we're returning to
4416 * the idle loop anyway, and cancel any active timeout requests. (In
4417 * future we might want to allow some timeout requests to survive, but
4418 * at minimum it'd be necessary to do reschedule_timeouts(), in case
4419 * we got here because of a query cancel interrupting the SIGALRM
4420 * interrupt handler.) Note in particular that we must clear the
4421 * statement and lock timeout indicators, to prevent any future plain
4422 * query cancels from being misreported as timeouts in case we're
4423 * forgetting a timeout cancel.
4424 */
4425 disable_all_timeouts(false); /* do first to avoid race condition */
4426 QueryCancelPending = false;
4427 idle_in_transaction_timeout_enabled = false;
4428 idle_session_timeout_enabled = false;
4429
4430 /* Not reading from the client anymore. */
4431 DoingCommandRead = false;
4432
4433 /* Make sure libpq is in a good state */
4434 pq_comm_reset();
4435
4436 /* Report the error to the client and/or server log */
4438
4439 /*
4440 * If Valgrind noticed something during the erroneous query, print the
4441 * query string, assuming we have one.
4442 */
4444
4445 /*
4446 * Make sure debug_query_string gets reset before we possibly clobber
4447 * the storage it points at.
4448 */
4449 debug_query_string = NULL;
4450
4451 /*
4452 * Abort the current transaction in order to recover.
4453 */
4455
4456 if (am_walsender)
4458
4460
4461 /*
4462 * We can't release replication slots inside AbortTransaction() as we
4463 * need to be able to start and abort transactions while having a slot
4464 * acquired. But we never need to hold them across top level errors,
4465 * so releasing here is fine. There also is a before_shmem_exit()
4466 * callback ensuring correct cleanup on FATAL errors.
4467 */
4468 if (MyReplicationSlot != NULL)
4470
4471 /* We also want to cleanup temporary slots on error. */
4473
4475
4476 /*
4477 * Now return to normal top-level context and clear ErrorContext for
4478 * next time.
4479 */
4482
4483 /*
4484 * If we were handling an extended-query-protocol message, initiate
4485 * skip till next Sync. This also causes us not to issue
4486 * ReadyForQuery (until we get Sync).
4487 */
4489 ignore_till_sync = true;
4490
4491 /* We don't have a transaction command open anymore */
4492 xact_started = false;
4493
4494 /*
4495 * If an error occurred while we were reading a message from the
4496 * client, we have potentially lost track of where the previous
4497 * message ends and the next one begins. Even though we have
4498 * otherwise recovered from the error, we cannot safely read any more
4499 * messages from the client, so there isn't much we can do with the
4500 * connection anymore.
4501 */
4502 if (pq_is_reading_msg())
4503 ereport(FATAL,
4504 (errcode(ERRCODE_PROTOCOL_VIOLATION),
4505 errmsg("terminating connection because protocol synchronization was lost")));
4506
4507 /* Now we can allow interrupts again */
4509 }
4510
4511 /* We can now handle ereport(ERROR) */
4512 PG_exception_stack = &local_sigjmp_buf;
4513
4514 if (!ignore_till_sync)
4515 send_ready_for_query = true; /* initially, or after error */
4516
4517 /*
4518 * Non-error queries loop here.
4519 */
4520
4521 for (;;)
4522 {
4523 int firstchar;
4524 StringInfoData input_message;
4525
4526 /*
4527 * At top of loop, reset extended-query-message flag, so that any
4528 * errors encountered in "idle" state don't provoke skip.
4529 */
4531
4532 /*
4533 * For valgrind reporting purposes, the "current query" begins here.
4534 */
4535#ifdef USE_VALGRIND
4536 old_valgrind_error_count = VALGRIND_COUNT_ERRORS;
4537#endif
4538
4539 /*
4540 * Release storage left over from prior query cycle, and create a new
4541 * query input buffer in the cleared MessageContext.
4542 */
4545
4546 initStringInfo(&input_message);
4547
4548 /*
4549 * Also consider releasing our catalog snapshot if any, so that it's
4550 * not preventing advance of global xmin while we wait for the client.
4551 */
4553
4554 /*
4555 * (1) If we've reached idle state, tell the frontend we're ready for
4556 * a new query.
4557 *
4558 * Note: this includes fflush()'ing the last of the prior output.
4559 *
4560 * This is also a good time to flush out collected statistics to the
4561 * cumulative stats system, and to update the PS stats display. We
4562 * avoid doing those every time through the message loop because it'd
4563 * slow down processing of batched messages, and because we don't want
4564 * to report uncommitted updates (that confuses autovacuum). The
4565 * notification processor wants a call too, if we are not in a
4566 * transaction block.
4567 *
4568 * Also, if an idle timeout is enabled, start the timer for that.
4569 */
4570 if (send_ready_for_query)
4571 {
4573 {
4574 set_ps_display("idle in transaction (aborted)");
4576
4577 /* Start the idle-in-transaction timer */
4580 {
4581 idle_in_transaction_timeout_enabled = true;
4584 }
4585 }
4587 {
4588 set_ps_display("idle in transaction");
4590
4591 /* Start the idle-in-transaction timer */
4594 {
4595 idle_in_transaction_timeout_enabled = true;
4598 }
4599 }
4600 else
4601 {
4602 long stats_timeout;
4603
4604 /*
4605 * Process incoming notifies (including self-notifies), if
4606 * any, and send relevant messages to the client. Doing it
4607 * here helps ensure stable behavior in tests: if any notifies
4608 * were received during the just-finished transaction, they'll
4609 * be seen by the client before ReadyForQuery is.
4610 */
4613
4614 /*
4615 * Check if we need to report stats. If pgstat_report_stat()
4616 * decides it's too soon to flush out pending stats / lock
4617 * contention prevented reporting, it'll tell us when we
4618 * should try to report stats again (so that stats updates
4619 * aren't unduly delayed if the connection goes idle for a
4620 * long time). We only enable the timeout if we don't already
4621 * have a timeout in progress, because we don't disable the
4622 * timeout below. enable_timeout_after() needs to determine
4623 * the current timestamp, which can have a negative
4624 * performance impact. That's OK because pgstat_report_stat()
4625 * won't have us wake up sooner than a prior call.
4626 */
4627 stats_timeout = pgstat_report_stat(false);
4628 if (stats_timeout > 0)
4629 {
4632 stats_timeout);
4633 }
4634 else
4635 {
4636 /* all stats flushed, no need for the timeout */
4639 }
4640
4641 set_ps_display("idle");
4643
4644 /* Start the idle-session timer */
4645 if (IdleSessionTimeout > 0)
4646 {
4647 idle_session_timeout_enabled = true;
4650 }
4651 }
4652
4653 /* Report any recently-changed GUC options */
4655
4656 /*
4657 * The first time this backend is ready for query, log the
4658 * durations of the different components of connection
4659 * establishment and setup.
4660 */
4664 {
4665 uint64 total_duration,
4666 fork_duration,
4667 auth_duration;
4668
4670
4671 total_duration =
4674 fork_duration =
4677 auth_duration =
4680
4681 ereport(LOG,
4682 errmsg("connection ready: setup total=%.3f ms, fork=%.3f ms, authentication=%.3f ms",
4683 (double) total_duration / NS_PER_US,
4684 (double) fork_duration / NS_PER_US,
4685 (double) auth_duration / NS_PER_US));
4686 }
4687
4689 send_ready_for_query = false;
4690 }
4691
4692 /*
4693 * (2) Allow asynchronous signals to be executed immediately if they
4694 * come in while we are waiting for client input. (This must be
4695 * conditional since we don't want, say, reads on behalf of COPY FROM
4696 * STDIN doing the same thing.)
4697 */
4698 DoingCommandRead = true;
4699
4700 /*
4701 * (3) read a command (loop blocks here)
4702 */
4703 firstchar = ReadCommand(&input_message);
4704
4705 /*
4706 * (4) turn off the idle-in-transaction and idle-session timeouts if
4707 * active. We do this before step (5) so that any last-moment timeout
4708 * is certain to be detected in step (5).
4709 *
4710 * At most one of these timeouts will be active, so there's no need to
4711 * worry about combining the timeout.c calls into one.
4712 */
4713 if (idle_in_transaction_timeout_enabled)
4714 {
4716 idle_in_transaction_timeout_enabled = false;
4717 }
4718 if (idle_session_timeout_enabled)
4719 {
4721 idle_session_timeout_enabled = false;
4722 }
4723
4724 /*
4725 * (5) disable async signal conditions again.
4726 *
4727 * Query cancel is supposed to be a no-op when there is no query in
4728 * progress, so if a query cancel arrived while we were idle, just
4729 * reset QueryCancelPending. ProcessInterrupts() has that effect when
4730 * it's called when DoingCommandRead is set, so check for interrupts
4731 * before resetting DoingCommandRead.
4732 */
4734 DoingCommandRead = false;
4735
4736 /*
4737 * (6) check for any other interesting events that happened while we
4738 * slept.
4739 */
4741 {
4742 ConfigReloadPending = false;
4744 }
4745
4746 /*
4747 * (7) process the command. But ignore it if we're skipping till
4748 * Sync.
4749 */
4750 if (ignore_till_sync && firstchar != EOF)
4751 continue;
4752
4753 switch (firstchar)
4754 {
4755 case PqMsg_Query:
4756 {
4757 const char *query_string;
4758
4759 /* Set statement_timestamp() */
4761
4762 query_string = pq_getmsgstring(&input_message);
4763 pq_getmsgend(&input_message);
4764
4765 if (am_walsender)
4766 {
4767 if (!exec_replication_command(query_string))
4768 exec_simple_query(query_string);
4769 }
4770 else
4771 exec_simple_query(query_string);
4772
4773 valgrind_report_error_query(query_string);
4774
4775 send_ready_for_query = true;
4776 }
4777 break;
4778
4779 case PqMsg_Parse:
4780 {
4781 const char *stmt_name;
4782 const char *query_string;
4783 int numParams;
4784 Oid *paramTypes = NULL;
4785
4786 forbidden_in_wal_sender(firstchar);
4787
4788 /* Set statement_timestamp() */
4790
4791 stmt_name = pq_getmsgstring(&input_message);
4792 query_string = pq_getmsgstring(&input_message);
4793 numParams = pq_getmsgint(&input_message, 2);
4794 if (numParams > 0)
4795 {
4796 paramTypes = palloc_array(Oid, numParams);
4797 for (int i = 0; i < numParams; i++)
4798 paramTypes[i] = pq_getmsgint(&input_message, 4);
4799 }
4800 pq_getmsgend(&input_message);
4801
4802 exec_parse_message(query_string, stmt_name,
4803 paramTypes, numParams);
4804
4805 valgrind_report_error_query(query_string);
4806 }
4807 break;
4808
4809 case PqMsg_Bind:
4810 forbidden_in_wal_sender(firstchar);
4811
4812 /* Set statement_timestamp() */
4814
4815 /*
4816 * this message is complex enough that it seems best to put
4817 * the field extraction out-of-line
4818 */
4819 exec_bind_message(&input_message);
4820
4821 /* exec_bind_message does valgrind_report_error_query */
4822 break;
4823
4824 case PqMsg_Execute:
4825 {
4826 const char *portal_name;
4827 int max_rows;
4828
4829 forbidden_in_wal_sender(firstchar);
4830
4831 /* Set statement_timestamp() */
4833
4834 portal_name = pq_getmsgstring(&input_message);
4835 max_rows = pq_getmsgint(&input_message, 4);
4836 pq_getmsgend(&input_message);
4837
4838 exec_execute_message(portal_name, max_rows);
4839
4840 /* exec_execute_message does valgrind_report_error_query */
4841 }
4842 break;
4843
4844 case PqMsg_FunctionCall:
4845 forbidden_in_wal_sender(firstchar);
4846
4847 /* Set statement_timestamp() */
4849
4850 /* Report query to various monitoring facilities. */
4852 set_ps_display("<FASTPATH>");
4853
4854 /* start an xact for this function invocation */
4856
4857 /*
4858 * Note: we may at this point be inside an aborted
4859 * transaction. We can't throw error for that until we've
4860 * finished reading the function-call message, so
4861 * HandleFunctionRequest() must check for it after doing so.
4862 * Be careful not to do anything that assumes we're inside a
4863 * valid transaction here.
4864 */
4865
4866 /* switch back to message context */
4868
4869 HandleFunctionRequest(&input_message);
4870
4871 /* commit the function-invocation transaction */
4873
4874 valgrind_report_error_query("fastpath function call");
4875
4876 send_ready_for_query = true;
4877 break;
4878
4879 case PqMsg_Close:
4880 {
4881 int close_type;
4882 const char *close_target;
4883
4884 forbidden_in_wal_sender(firstchar);
4885
4886 close_type = pq_getmsgbyte(&input_message);
4887 close_target = pq_getmsgstring(&input_message);
4888 pq_getmsgend(&input_message);
4889
4890 switch (close_type)
4891 {
4892 case 'S':
4893 if (close_target[0] != '\0')
4894 DropPreparedStatement(close_target, false);
4895 else
4896 {
4897 /* special-case the unnamed statement */
4899 }
4900 break;
4901 case 'P':
4902 {
4903 Portal portal;
4904
4905 portal = GetPortalByName(close_target);
4906 if (PortalIsValid(portal))
4907 PortalDrop(portal, false);
4908 }
4909 break;
4910 default:
4911 ereport(ERROR,
4912 (errcode(ERRCODE_PROTOCOL_VIOLATION),
4913 errmsg("invalid CLOSE message subtype %d",
4914 close_type)));
4915 break;
4916 }
4917
4920
4921 valgrind_report_error_query("CLOSE message");
4922 }
4923 break;
4924
4925 case PqMsg_Describe:
4926 {
4927 int describe_type;
4928 const char *describe_target;
4929
4930 forbidden_in_wal_sender(firstchar);
4931
4932 /* Set statement_timestamp() (needed for xact) */
4934
4935 describe_type = pq_getmsgbyte(&input_message);
4936 describe_target = pq_getmsgstring(&input_message);
4937 pq_getmsgend(&input_message);
4938
4939 switch (describe_type)
4940 {
4941 case 'S':
4942 exec_describe_statement_message(describe_target);
4943 break;
4944 case 'P':
4945 exec_describe_portal_message(describe_target);
4946 break;
4947 default:
4948 ereport(ERROR,
4949 (errcode(ERRCODE_PROTOCOL_VIOLATION),
4950 errmsg("invalid DESCRIBE message subtype %d",
4951 describe_type)));
4952 break;
4953 }
4954
4955 valgrind_report_error_query("DESCRIBE message");
4956 }
4957 break;
4958
4959 case PqMsg_Flush:
4960 pq_getmsgend(&input_message);
4962 pq_flush();
4963 break;
4964
4965 case PqMsg_Sync:
4966 pq_getmsgend(&input_message);
4967
4968 /*
4969 * If pipelining was used, we may be in an implicit
4970 * transaction block. Close it before calling
4971 * finish_xact_command.
4972 */
4975 valgrind_report_error_query("SYNC message");
4976 send_ready_for_query = true;
4977 break;
4978
4979 /*
4980 * PqMsg_Terminate means that the frontend is closing down the
4981 * socket. EOF means unexpected loss of frontend connection.
4982 * Either way, perform normal shutdown.
4983 */
4984 case EOF:
4985
4986 /* for the cumulative statistics system */
4988
4989 /* FALLTHROUGH */
4990
4991 case PqMsg_Terminate:
4992
4993 /*
4994 * Reset whereToSendOutput to prevent ereport from attempting
4995 * to send any more messages to client.
4996 */
4999
5000 /*
5001 * NOTE: if you are tempted to add more code here, DON'T!
5002 * Whatever you had in mind to do should be set up as an
5003 * on_proc_exit or on_shmem_exit callback, instead. Otherwise
5004 * it will fail to be called during other backend-shutdown
5005 * scenarios.
5006 */
5007 proc_exit(0);
5008
5009 case PqMsg_CopyData:
5010 case PqMsg_CopyDone:
5011 case PqMsg_CopyFail:
5012
5013 /*
5014 * Accept but ignore these messages, per protocol spec; we
5015 * probably got here because a COPY failed, and the frontend
5016 * is still sending data.
5017 */
5018 break;
5019
5020 default:
5021 ereport(FATAL,
5022 (errcode(ERRCODE_PROTOCOL_VIOLATION),
5023 errmsg("invalid frontend message type %d",
5024 firstchar)));
5025 }
5026 } /* end of input-reading loop */
5027}
void ProcessNotifyInterrupt(bool flush)
Definition: async.c:1834
volatile sig_atomic_t notifyInterruptPending
Definition: async.c:413
void DropPreparedStatement(const char *stmt_name, bool showError)
Definition: prepare.c:520
sigset_t UnBlockSig
Definition: pqsignal.c:22
uint32 log_connections
ConnectionTiming conn_timing
@ LOG_CONNECTION_SETUP_DURATIONS
void pgstat_report_activity(BackendState state, const char *cmd_str)
@ STATE_IDLEINTRANSACTION_ABORTED
@ STATE_IDLE
@ STATE_IDLEINTRANSACTION
@ STATE_FASTPATH
int32_t int32
Definition: c.h:498
uint64_t uint64
Definition: c.h:503
#define TIMESTAMP_MINUS_INFINITY
Definition: timestamp.h:150
void ReadyForQuery(CommandDest dest)
Definition: dest.c:256
@ DestDebug
Definition: dest.h:88
@ DestNone
Definition: dest.h:87
void EmitErrorReport(void)
Definition: elog.c:1709
ErrorContextCallback * error_context_stack
Definition: elog.c:95
void FlushErrorState(void)
Definition: elog.c:1889
sigjmp_buf * PG_exception_stack
Definition: elog.c:97
#define FATAL
Definition: elog.h:41
void EventTriggerOnLogin(void)
void HandleFunctionRequest(StringInfo msgBuf)
Definition: fastpath.c:188
#define palloc_array(type, count)
Definition: fe_memutils.h:76
int MyCancelKeyLength
Definition: globals.c:54
int MyProcPid
Definition: globals.c:48
bool IsUnderPostmaster
Definition: globals.c:121
char MyCancelKey[MAX_CANCEL_KEY_LENGTH]
Definition: globals.c:53
volatile sig_atomic_t QueryCancelPending
Definition: globals.c:33
struct Port * MyProcPort
Definition: globals.c:52
Oid MyDatabaseId
Definition: globals.c:95
void ProcessConfigFile(GucContext context)
Definition: guc-file.l:120
void BeginReportingGUCOptions(void)
Definition: guc.c:2546
void ReportChangedGUCOptions(void)
Definition: guc.c:2596
@ PGC_SIGHUP
Definition: guc.h:75
static char * username
Definition: initdb.c:153
volatile sig_atomic_t ConfigReloadPending
Definition: interrupt.c:27
void SignalHandlerForConfigReload(SIGNAL_ARGS)
Definition: interrupt.c:65
void on_proc_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:309
void proc_exit(int code)
Definition: ipc.c:104
void jit_reset_after_error(void)
Definition: jit.c:127
#define pq_flush()
Definition: libpq.h:46
#define pq_comm_reset()
Definition: libpq.h:45
MemoryContext MessageContext
Definition: mcxt.c:169
void MemoryContextReset(MemoryContext context)
Definition: mcxt.c:414
MemoryContext TopMemoryContext
Definition: mcxt.c:165
MemoryContext PostmasterContext
Definition: mcxt.c:167
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:485
#define AllocSetContextCreate
Definition: memutils.h:149
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:180
#define RESUME_INTERRUPTS()
Definition: miscadmin.h:136
@ NormalProcessing
Definition: miscadmin.h:472
@ InitProcessing
Definition: miscadmin.h:471
#define IsExternalConnectionBackend(backend_type)
Definition: miscadmin.h:405
#define GetProcessingMode()
Definition: miscadmin.h:481
#define INIT_PG_LOAD_SESSION_LIBS
Definition: miscadmin.h:499
#define CHECK_FOR_INTERRUPTS()
Definition: miscadmin.h:123
#define HOLD_INTERRUPTS()
Definition: miscadmin.h:134
#define SetProcessingMode(mode)
Definition: miscadmin.h:483
BackendType MyBackendType
Definition: miscinit.c:64
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:124
const void size_t len
static char * buf
Definition: pg_test_fsync.c:72
long pgstat_report_stat(bool force)
Definition: pgstat.c:691
@ DISCONNECT_CLIENT_EOF
Definition: pgstat.h:56
void pgstat_report_connect(Oid dboid)
#define pqsignal
Definition: port.h:531
bool pg_strong_random(void *buf, size_t len)
#define printf(...)
Definition: port.h:245
#define PortalIsValid(p)
Definition: portal.h:212
void PortalDrop(Portal portal, bool isTopCommit)
Definition: portalmem.c:470
Portal GetPortalByName(const char *name)
Definition: portalmem.c:130
void PortalErrorCleanup(void)
Definition: portalmem.c:919
static void exec_describe_statement_message(const char *stmt_name)
Definition: postgres.c:2643
void quickdie(SIGNAL_ARGS)
Definition: postgres.c:2931
static void log_disconnections(int code, Datum arg)
Definition: postgres.c:5173
static void forbidden_in_wal_sender(char firstchar)
Definition: postgres.c:5037
static void exec_execute_message(const char *portal_name, long max_rows)
Definition: postgres.c:2109
void FloatExceptionHandler(SIGNAL_ARGS)
Definition: postgres.c:3075
void StatementCancelHandler(SIGNAL_ARGS)
Definition: postgres.c:3058
static bool ignore_till_sync
Definition: postgres.c:143
static void finish_xact_command(void)
Definition: postgres.c:2827
const char * debug_query_string
Definition: postgres.c:88
static void exec_simple_query(const char *query_string)
Definition: postgres.c:1011
static void exec_parse_message(const char *query_string, const char *stmt_name, Oid *paramTypes, int numParams)
Definition: postgres.c:1390
static void exec_bind_message(StringInfo input_message)
Definition: postgres.c:1625
void die(SIGNAL_ARGS)
Definition: postgres.c:3028
static bool xact_started
Definition: postgres.c:129
static MemoryContext row_description_context
Definition: postgres.c:162
static StringInfoData row_description_buf
Definition: postgres.c:163
static bool doing_extended_query_message
Definition: postgres.c:142
static void start_xact_command(void)
Definition: postgres.c:2788
static void exec_describe_portal_message(const char *portal_name)
Definition: postgres.c:2736
bool Log_disconnections
Definition: postgres.c:94
static void drop_unnamed_stmt(void)
Definition: postgres.c:2906
#define valgrind_report_error_query(query)
Definition: postgres.c:216
static int ReadCommand(StringInfo inBuf)
Definition: postgres.c:480
void BaseInit(void)
Definition: postinit.c:616
void InitPostgres(const char *in_dbname, Oid dboid, const char *username, Oid useroid, bits32 flags, char *out_dbname)
Definition: postinit.c:723
bool pq_is_reading_msg(void)
Definition: pqcomm.c:1182
#define PG_PROTOCOL(m, n)
Definition: pqcomm.h:90
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:415
void pq_sendbytes(StringInfo buf, const void *data, int datalen)
Definition: pqformat.c:126
void pq_getmsgend(StringInfo msg)
Definition: pqformat.c:635
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:579
void pq_putemptymessage(char msgtype)
Definition: pqformat.c:388
void pq_endmessage(StringInfo buf)
Definition: pqformat.c:296
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:399
void pq_beginmessage(StringInfo buf, char msgtype)
Definition: pqformat.c:88
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:144
void procsignal_sigusr1_handler(SIGNAL_ARGS)
Definition: procsignal.c:673
#define MAX_CANCEL_KEY_LENGTH
Definition: procsignal.h:68
#define PqMsg_CloseComplete
Definition: protocol.h:40
#define PqMsg_CopyDone
Definition: protocol.h:64
#define PqMsg_CopyData
Definition: protocol.h:65
#define PqMsg_FunctionCall
Definition: protocol.h:23
#define PqMsg_Describe
Definition: protocol.h:21
#define PqMsg_Parse
Definition: protocol.h:25
#define PqMsg_Bind
Definition: protocol.h:19
#define PqMsg_Sync
Definition: protocol.h:27
#define PqMsg_CopyFail
Definition: protocol.h:29
#define PqMsg_Flush
Definition: protocol.h:24
#define PqMsg_BackendKeyData
Definition: protocol.h:48
#define PqMsg_Query
Definition: protocol.h:26
#define PqMsg_Terminate
Definition: protocol.h:28
#define PqMsg_Execute
Definition: protocol.h:22
#define PqMsg_Close
Definition: protocol.h:20
static void set_ps_display(const char *activity)
Definition: ps_status.h:40
ReplicationSlot * MyReplicationSlot
Definition: slot.c:147
void ReplicationSlotRelease(void)
Definition: slot.c:686
void ReplicationSlotCleanup(bool synced_only)
Definition: slot.c:775
void InvalidateCatalogSnapshotConditionally(void)
Definition: snapmgr.c:464
int IdleSessionTimeout
Definition: proc.c:63
int IdleInTransactionSessionTimeout
Definition: proc.c:61
int TransactionTimeout
Definition: proc.c:62
char * dbname
Definition: streamutil.c:49
void initStringInfo(StringInfo str)
Definition: stringinfo.c:97
TimestampTz ready_for_use
TimestampTz auth_start
TimestampTz socket_create
TimestampTz fork_start
TimestampTz auth_end
TimestampTz fork_end
ProtocolVersion proto
Definition: libpq-be.h:132
void enable_timeout_after(TimeoutId id, int delay_ms)
Definition: timeout.c:560
bool get_timeout_active(TimeoutId id)
Definition: timeout.c:780
void disable_all_timeouts(bool keep_indicators)
Definition: timeout.c:751
void InitializeTimeouts(void)
Definition: timeout.c:470
void disable_timeout(TimeoutId id, bool keep_indicator)
Definition: timeout.c:685
@ IDLE_SESSION_TIMEOUT
Definition: timeout.h:35
@ IDLE_IN_TRANSACTION_SESSION_TIMEOUT
Definition: timeout.h:33
@ IDLE_STATS_UPDATE_TIMEOUT
Definition: timeout.h:36
static uint64 TimestampDifferenceMicroseconds(TimestampTz start_time, TimestampTz stop_time)
Definition: timestamp.h:90
#define NS_PER_US
Definition: uuid.c:33
void WalSndErrorCleanup(void)
Definition: walsender.c:330
bool am_walsender
Definition: walsender.c:120
bool exec_replication_command(const char *cmd_string)
Definition: walsender.c:1970
void InitWalSender(void)
Definition: walsender.c:283
void WalSndSignals(void)
Definition: walsender.c:3595
#define SIGCHLD
Definition: win32_port.h:168
#define SIGHUP
Definition: win32_port.h:158
#define SIGPIPE
Definition: win32_port.h:163
#define SIGQUIT
Definition: win32_port.h:159
#define SIGUSR1
Definition: win32_port.h:170
#define SIGUSR2
Definition: win32_port.h:171
bool IsTransactionOrTransactionBlock(void)
Definition: xact.c:4989
bool IsAbortedTransactionBlockState(void)
Definition: xact.c:407
void EndImplicitTransactionBlock(void)
Definition: xact.c:4351
void SetCurrentStatementStartTimestamp(void)
Definition: xact.c:914
void AbortCurrentTransaction(void)
Definition: xact.c:3451

References AbortCurrentTransaction(), ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate, am_walsender, Assert(), ConnectionTiming::auth_end, ConnectionTiming::auth_start, BaseInit(), BeginReportingGUCOptions(), buf, CHECK_FOR_INTERRUPTS, ConfigReloadPending, conn_timing, dbname, debug_query_string, DestDebug, DestNone, DestRemote, die(), disable_all_timeouts(), disable_timeout(), DISCONNECT_CLIENT_EOF, doing_extended_query_message, DoingCommandRead, drop_unnamed_stmt(), DropPreparedStatement(), EmitErrorReport(), enable_timeout_after(), EndImplicitTransactionBlock(), ereport, errcode(), errmsg(), ERROR, error_context_stack, EventTriggerOnLogin(), exec_bind_message(), exec_describe_portal_message(), exec_describe_statement_message(), exec_execute_message(), exec_parse_message(), exec_replication_command(), exec_simple_query(), FATAL, finish_xact_command(), FloatExceptionHandler(), FlushErrorState(), forbidden_in_wal_sender(), ConnectionTiming::fork_end, ConnectionTiming::fork_start, get_timeout_active(), GetCurrentTimestamp(), GetPortalByName(), GetProcessingMode, HandleFunctionRequest(), HOLD_INTERRUPTS, i, IDLE_IN_TRANSACTION_SESSION_TIMEOUT, IDLE_SESSION_TIMEOUT, IDLE_STATS_UPDATE_TIMEOUT, IdleInTransactionSessionTimeout, IdleSessionTimeout, ignore_till_sync, INIT_PG_LOAD_SESSION_LIBS, InitializeTimeouts(), InitPostgres(), InitProcessing, initStringInfo(), InitWalSender(), InvalidateCatalogSnapshotConditionally(), InvalidOid, IsAbortedTransactionBlockState(), IsExternalConnectionBackend, IsTransactionOrTransactionBlock(), IsUnderPostmaster, jit_reset_after_error(), len, LOG, LOG_CONNECTION_SETUP_DURATIONS, log_connections, Log_disconnections, log_disconnections(), MAX_CANCEL_KEY_LENGTH, MemoryContextDelete(), MemoryContextReset(), MemoryContextSwitchTo(), MessageContext, MyBackendType, MyCancelKey, MyCancelKeyLength, MyDatabaseId, MyProcPid, MyProcPort, MyReplicationSlot, NormalProcessing, notifyInterruptPending, NS_PER_US, on_proc_exit(), palloc_array, PG_exception_stack, PG_PROTOCOL, pg_strong_random(), PGC_SIGHUP, pgstat_report_activity(), pgstat_report_connect(), pgstat_report_stat(), pgStatSessionEndCause, PortalDrop(), PortalErrorCleanup(), PortalIsValid, PostmasterContext, pq_beginmessage(), pq_comm_reset, pq_endmessage(), pq_flush, pq_getmsgbyte(), pq_getmsgend(), pq_getmsgint(), pq_getmsgstring(), pq_is_reading_msg(), pq_putemptymessage(), pq_sendbytes(), pq_sendint32(), PqMsg_BackendKeyData, PqMsg_Bind, PqMsg_Close, PqMsg_CloseComplete, PqMsg_CopyData, PqMsg_CopyDone, PqMsg_CopyFail, PqMsg_Describe, PqMsg_Execute, PqMsg_Flush, PqMsg_FunctionCall, PqMsg_Parse, PqMsg_Query, PqMsg_Sync, PqMsg_Terminate, pqsignal, printf, proc_exit(), ProcessConfigFile(), ProcessNotifyInterrupt(), procsignal_sigusr1_handler(), Port::proto, QueryCancelPending, quickdie(), ReadCommand(), ConnectionTiming::ready_for_use, ReadyForQuery(), ReplicationSlotCleanup(), ReplicationSlotRelease(), ReportChangedGUCOptions(), RESUME_INTERRUPTS, row_description_buf, row_description_context, set_ps_display(), SetCurrentStatementStartTimestamp(), SetProcessingMode, SIGCHLD, SIGHUP, SignalHandlerForConfigReload(), SIGPIPE, SIGQUIT, SIGUSR1, SIGUSR2, ConnectionTiming::socket_create, start_xact_command(), STATE_FASTPATH, STATE_IDLE, STATE_IDLEINTRANSACTION, STATE_IDLEINTRANSACTION_ABORTED, StatementCancelHandler(), TIMESTAMP_MINUS_INFINITY, TimestampDifferenceMicroseconds(), TopMemoryContext, TransactionTimeout, UnBlockSig, username, valgrind_report_error_query, WalSndErrorCleanup(), WalSndSignals(), whereToSendOutput, and xact_started.

Referenced by BackendMain(), and PostgresSingleUserMain().

◆ PostgresSingleUserMain()

pg_noreturn void PostgresSingleUserMain ( int  argc,
char *  argv[],
const char *  username 
)

Definition at line 4060 of file postgres.c.

4062{
4063 const char *dbname = NULL;
4064
4066
4067 /* Initialize startup process environment. */
4068 InitStandaloneProcess(argv[0]);
4069
4070 /*
4071 * Set default values for command-line options.
4072 */
4074
4075 /*
4076 * Parse command-line options.
4077 */
4079
4080 /* Must have gotten a database name, or have a default (the username) */
4081 if (dbname == NULL)
4082 {
4083 dbname = username;
4084 if (dbname == NULL)
4085 ereport(FATAL,
4086 (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4087 errmsg("%s: no database nor user name specified",
4088 progname)));
4089 }
4090
4091 /* Acquire configuration parameters */
4093 proc_exit(1);
4094
4095 /*
4096 * Validate we have been given a reasonable-looking DataDir and change
4097 * into it.
4098 */
4099 checkDataDir();
4101
4102 /*
4103 * Create lockfile for data directory.
4104 */
4105 CreateDataDirLockFile(false);
4106
4107 /* read control file (error checking and contains config ) */
4109
4110 /*
4111 * process any libraries that should be preloaded at postmaster start
4112 */
4114
4115 /* Initialize MaxBackends */
4117
4118 /*
4119 * We don't need postmaster child slots in single-user mode, but
4120 * initialize them anyway to avoid having special handling.
4121 */
4123
4124 /* Initialize size of fast-path lock cache. */
4126
4127 /*
4128 * Give preloaded libraries a chance to request additional shared memory.
4129 */
4131
4132 /*
4133 * Now that loadable modules have had their chance to request additional
4134 * shared memory, determine the value of any runtime-computed GUCs that
4135 * depend on the amount of shared memory required.
4136 */
4138
4139 /*
4140 * Now that modules have been loaded, we can process any custom resource
4141 * managers specified in the wal_consistency_checking GUC.
4142 */
4144
4145 /*
4146 * Create shared memory etc. (Nothing's really "shared" in single-user
4147 * mode, but we must have these data structures anyway.)
4148 */
4150
4151 /*
4152 * Estimate number of openable files. This must happen after setting up
4153 * semaphores, because on some platforms semaphores count as open files.
4154 */
4156
4157 /*
4158 * Remember stand-alone backend startup time,roughly at the same point
4159 * during startup that postmaster does so.
4160 */
4162
4163 /*
4164 * Create a per-backend PGPROC struct in shared memory. We must do this
4165 * before we can use LWLocks.
4166 */
4167 InitProcess();
4168
4169 /*
4170 * Now that sufficient infrastructure has been initialized, PostgresMain()
4171 * can do the rest.
4172 */
4174}
TimestampTz PgStartTime
Definition: timestamp.c:54
void set_max_safe_fds(void)
Definition: fd.c:1044
bool SelectConfigFiles(const char *userDoption, const char *progname)
Definition: guc.c:1784
void InitializeGUCOptions(void)
Definition: guc.c:1530
@ PGC_POSTMASTER
Definition: guc.h:74
void InitializeShmemGUCs(void)
Definition: ipci.c:358
void CreateSharedMemoryAndSemaphores(void)
Definition: ipci.c:202
const char * progname
Definition: main.c:44
void ChangeToDataDir(void)
Definition: miscinit.c:460
void process_shmem_requests(void)
Definition: miscinit.c:1930
void InitStandaloneProcess(const char *argv0)
Definition: miscinit.c:175
void process_shared_preload_libraries(void)
Definition: miscinit.c:1902
void checkDataDir(void)
Definition: miscinit.c:347
void CreateDataDirLockFile(bool amPostmaster)
Definition: miscinit.c:1514
void InitPostmasterChildSlots(void)
Definition: pmchild.c:86
void process_postgres_switches(int argc, char *argv[], GucContext ctx, const char **dbname)
Definition: postgres.c:3795
static const char * userDoption
Definition: postgres.c:153
void PostgresMain(const char *dbname, const char *username)
Definition: postgres.c:4189
void InitializeMaxBackends(void)
Definition: postinit.c:555
void InitializeFastPathLocks(void)
Definition: postinit.c:587
void InitProcess(void)
Definition: proc.c:391
void InitializeWalConsistencyChecking(void)
Definition: xlog.c:4965
void LocalProcessControlFile(bool reset)
Definition: xlog.c:5027

References Assert(), ChangeToDataDir(), checkDataDir(), CreateDataDirLockFile(), CreateSharedMemoryAndSemaphores(), dbname, ereport, errcode(), errmsg(), FATAL, GetCurrentTimestamp(), InitializeFastPathLocks(), InitializeGUCOptions(), InitializeMaxBackends(), InitializeShmemGUCs(), InitializeWalConsistencyChecking(), InitPostmasterChildSlots(), InitProcess(), InitStandaloneProcess(), IsUnderPostmaster, LocalProcessControlFile(), PGC_POSTMASTER, PgStartTime, PostgresMain(), proc_exit(), process_postgres_switches(), process_shared_preload_libraries(), process_shmem_requests(), progname, SelectConfigFiles(), set_max_safe_fds(), userDoption, and username.

Referenced by main().

◆ process_postgres_switches()

void process_postgres_switches ( int  argc,
char *  argv[],
GucContext  ctx,
const char **  dbname 
)

Definition at line 3795 of file postgres.c.

3797{
3798 bool secure = (ctx == PGC_POSTMASTER);
3799 int errs = 0;
3800 GucSource gucsource;
3801 int flag;
3802
3803 if (secure)
3804 {
3805 gucsource = PGC_S_ARGV; /* switches came from command line */
3806
3807 /* Ignore the initial --single argument, if present */
3808 if (argc > 1 && strcmp(argv[1], "--single") == 0)
3809 {
3810 argv++;
3811 argc--;
3812 }
3813 }
3814 else
3815 {
3816 gucsource = PGC_S_CLIENT; /* switches came from client */
3817 }
3818
3819#ifdef HAVE_INT_OPTERR
3820
3821 /*
3822 * Turn this off because it's either printed to stderr and not the log
3823 * where we'd want it, or argv[0] is now "--single", which would make for
3824 * a weird error message. We print our own error message below.
3825 */
3826 opterr = 0;
3827#endif
3828
3829 /*
3830 * Parse command-line options. CAUTION: keep this in sync with
3831 * postmaster/postmaster.c (the option sets should not conflict) and with
3832 * the common help() function in main/main.c.
3833 */
3834 while ((flag = getopt(argc, argv, "B:bC:c:D:d:EeFf:h:ijk:lN:nOPp:r:S:sTt:v:W:-:")) != -1)
3835 {
3836 switch (flag)
3837 {
3838 case 'B':
3839 SetConfigOption("shared_buffers", optarg, ctx, gucsource);
3840 break;
3841
3842 case 'b':
3843 /* Undocumented flag used for binary upgrades */
3844 if (secure)
3845 IsBinaryUpgrade = true;
3846 break;
3847
3848 case 'C':
3849 /* ignored for consistency with the postmaster */
3850 break;
3851
3852 case '-':
3853
3854 /*
3855 * Error if the user misplaced a special must-be-first option
3856 * for dispatching to a subprogram. parse_dispatch_option()
3857 * returns DISPATCH_POSTMASTER if it doesn't find a match, so
3858 * error for anything else.
3859 */
3861 ereport(ERROR,
3862 (errcode(ERRCODE_SYNTAX_ERROR),
3863 errmsg("--%s must be first argument", optarg)));
3864
3865 /* FALLTHROUGH */
3866 case 'c':
3867 {
3868 char *name,
3869 *value;
3870
3872 if (!value)
3873 {
3874 if (flag == '-')
3875 ereport(ERROR,
3876 (errcode(ERRCODE_SYNTAX_ERROR),
3877 errmsg("--%s requires a value",
3878 optarg)));
3879 else
3880 ereport(ERROR,
3881 (errcode(ERRCODE_SYNTAX_ERROR),
3882 errmsg("-c %s requires a value",
3883 optarg)));
3884 }
3885 SetConfigOption(name, value, ctx, gucsource);
3886 pfree(name);
3887 pfree(value);
3888 break;
3889 }
3890
3891 case 'D':
3892 if (secure)
3893 userDoption = strdup(optarg);
3894 break;
3895
3896 case 'd':
3897 set_debug_options(atoi(optarg), ctx, gucsource);
3898 break;
3899
3900 case 'E':
3901 if (secure)
3902 EchoQuery = true;
3903 break;
3904
3905 case 'e':
3906 SetConfigOption("datestyle", "euro", ctx, gucsource);
3907 break;
3908
3909 case 'F':
3910 SetConfigOption("fsync", "false", ctx, gucsource);
3911 break;
3912
3913 case 'f':
3914 if (!set_plan_disabling_options(optarg, ctx, gucsource))
3915 errs++;
3916 break;
3917
3918 case 'h':
3919 SetConfigOption("listen_addresses", optarg, ctx, gucsource);
3920 break;
3921
3922 case 'i':
3923 SetConfigOption("listen_addresses", "*", ctx, gucsource);
3924 break;
3925
3926 case 'j':
3927 if (secure)
3928 UseSemiNewlineNewline = true;
3929 break;
3930
3931 case 'k':
3932 SetConfigOption("unix_socket_directories", optarg, ctx, gucsource);
3933 break;
3934
3935 case 'l':
3936 SetConfigOption("ssl", "true", ctx, gucsource);
3937 break;
3938
3939 case 'N':
3940 SetConfigOption("max_connections", optarg, ctx, gucsource);
3941 break;
3942
3943 case 'n':
3944 /* ignored for consistency with postmaster */
3945 break;
3946
3947 case 'O':
3948 SetConfigOption("allow_system_table_mods", "true", ctx, gucsource);
3949 break;
3950
3951 case 'P':
3952 SetConfigOption("ignore_system_indexes", "true", ctx, gucsource);
3953 break;
3954
3955 case 'p':
3956 SetConfigOption("port", optarg, ctx, gucsource);
3957 break;
3958
3959 case 'r':
3960 /* send output (stdout and stderr) to the given file */
3961 if (secure)
3963 break;
3964
3965 case 'S':
3966 SetConfigOption("work_mem", optarg, ctx, gucsource);
3967 break;
3968
3969 case 's':
3970 SetConfigOption("log_statement_stats", "true", ctx, gucsource);
3971 break;
3972
3973 case 'T':
3974 /* ignored for consistency with the postmaster */
3975 break;
3976
3977 case 't':
3978 {
3979 const char *tmp = get_stats_option_name(optarg);
3980
3981 if (tmp)
3982 SetConfigOption(tmp, "true", ctx, gucsource);
3983 else
3984 errs++;
3985 break;
3986 }
3987
3988 case 'v':
3989
3990 /*
3991 * -v is no longer used in normal operation, since
3992 * FrontendProtocol is already set before we get here. We keep
3993 * the switch only for possible use in standalone operation,
3994 * in case we ever support using normal FE/BE protocol with a
3995 * standalone backend.
3996 */
3997 if (secure)
3999 break;
4000
4001 case 'W':
4002 SetConfigOption("post_auth_delay", optarg, ctx, gucsource);
4003 break;
4004
4005 default:
4006 errs++;
4007 break;
4008 }
4009
4010 if (errs)
4011 break;
4012 }
4013
4014 /*
4015 * Optional database name should be there only if *dbname is NULL.
4016 */
4017 if (!errs && dbname && *dbname == NULL && argc - optind >= 1)
4018 *dbname = strdup(argv[optind++]);
4019
4020 if (errs || argc != optind)
4021 {
4022 if (errs)
4023 optind--; /* complain about the previous argument */
4024
4025 /* spell the error message a bit differently depending on context */
4027 ereport(FATAL,
4028 errcode(ERRCODE_SYNTAX_ERROR),
4029 errmsg("invalid command-line argument for server process: %s", argv[optind]),
4030 errhint("Try \"%s --help\" for more information.", progname));
4031 else
4032 ereport(FATAL,
4033 errcode(ERRCODE_SYNTAX_ERROR),
4034 errmsg("%s: invalid command-line argument: %s",
4035 progname, argv[optind]),
4036 errhint("Try \"%s --help\" for more information.", progname));
4037 }
4038
4039 /*
4040 * Reset getopt(3) library so that it will work correctly in subprocesses
4041 * or when this function is called a second time with another array.
4042 */
4043 optind = 1;
4044#ifdef HAVE_INT_OPTRESET
4045 optreset = 1; /* some systems need this too */
4046#endif
4047}
int errhint(const char *fmt,...)
Definition: elog.c:1318
bool IsBinaryUpgrade
Definition: globals.c:122
ProtocolVersion FrontendProtocol
Definition: globals.c:30
char OutputFileName[MAXPGPATH]
Definition: globals.c:80
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:4332
void ParseLongOption(const char *string, char **name, char **value)
Definition: guc.c:6363
GucSource
Definition: guc.h:112
@ PGC_S_ARGV
Definition: guc.h:117
@ PGC_S_CLIENT
Definition: guc.h:122
static struct @165 value
DispatchOption parse_dispatch_option(const char *name)
Definition: main.c:240
#define MAXPGPATH
PGDLLIMPORT int optind
Definition: getopt.c:51
PGDLLIMPORT int opterr
Definition: getopt.c:50
int getopt(int nargc, char *const *nargv, const char *ostr)
Definition: getopt.c:72
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
void set_debug_options(int debug_flag, GucContext context, GucSource source)
Definition: postgres.c:3684
static bool UseSemiNewlineNewline
Definition: postgres.c:155
static bool EchoQuery
Definition: postgres.c:154
bool set_plan_disabling_options(const char *arg, GucContext context, GucSource source)
Definition: postgres.c:3713
const char * get_stats_option_name(const char *arg)
Definition: postgres.c:3755
@ DISPATCH_POSTMASTER
Definition: postmaster.h:139
uint32 ProtocolVersion
Definition: pqcomm.h:99
char * flag(int b)
Definition: test-ctype.c:33
const char * name

References dbname, DISPATCH_POSTMASTER, EchoQuery, ereport, errcode(), errhint(), errmsg(), ERROR, FATAL, flag(), FrontendProtocol, get_stats_option_name(), getopt(), IsBinaryUpgrade, IsUnderPostmaster, MAXPGPATH, name, optarg, opterr, optind, OutputFileName, parse_dispatch_option(), ParseLongOption(), pfree(), PGC_POSTMASTER, PGC_S_ARGV, PGC_S_CLIENT, progname, set_debug_options(), set_plan_disabling_options(), SetConfigOption(), strlcpy(), userDoption, UseSemiNewlineNewline, and value.

Referenced by PostgresSingleUserMain(), and process_startup_options().

◆ ProcessClientReadInterrupt()

void ProcessClientReadInterrupt ( bool  blocked)

Definition at line 501 of file postgres.c.

502{
503 int save_errno = errno;
504
506 {
507 /* Check for general interrupts that arrived before/while reading */
509
510 /* Process sinval catchup interrupts, if any */
513
514 /* Process notify interrupts, if any */
517 }
518 else if (ProcDiePending)
519 {
520 /*
521 * We're dying. If there is no data available to read, then it's safe
522 * (and sane) to handle that now. If we haven't tried to read yet,
523 * make sure the process latch is set, so that if there is no data
524 * then we'll come back here and die. If we're done reading, also
525 * make sure the process latch is set, as we might've undesirably
526 * cleared it while reading.
527 */
528 if (blocked)
530 else
532 }
533
534 errno = save_errno;
535}
void ProcessCatchupInterrupt(void)
Definition: sinval.c:174
volatile sig_atomic_t catchupInterruptPending
Definition: sinval.c:39

References catchupInterruptPending, CHECK_FOR_INTERRUPTS, DoingCommandRead, MyLatch, notifyInterruptPending, ProcDiePending, ProcessCatchupInterrupt(), ProcessNotifyInterrupt(), and SetLatch().

Referenced by interactive_getc(), and secure_read().

◆ ProcessClientWriteInterrupt()

void ProcessClientWriteInterrupt ( bool  blocked)

Definition at line 547 of file postgres.c.

548{
549 int save_errno = errno;
550
551 if (ProcDiePending)
552 {
553 /*
554 * We're dying. If it's not possible to write, then we should handle
555 * that immediately, else a stuck client could indefinitely delay our
556 * response to the signal. If we haven't tried to write yet, make
557 * sure the process latch is set, so that if the write would block
558 * then we'll come back here and die. If we're done writing, also
559 * make sure the process latch is set, as we might've undesirably
560 * cleared it while writing.
561 */
562 if (blocked)
563 {
564 /*
565 * Don't mess with whereToSendOutput if ProcessInterrupts wouldn't
566 * service ProcDiePending.
567 */
569 {
570 /*
571 * We don't want to send the client the error message, as a)
572 * that would possibly block again, and b) it would likely
573 * lead to loss of protocol sync because we may have already
574 * sent a partial protocol message.
575 */
578
580 }
581 }
582 else
584 }
585
586 errno = save_errno;
587}
volatile uint32 InterruptHoldoffCount
Definition: globals.c:44
volatile uint32 CritSectionCount
Definition: globals.c:46

References CHECK_FOR_INTERRUPTS, CritSectionCount, DestNone, DestRemote, InterruptHoldoffCount, MyLatch, ProcDiePending, SetLatch(), and whereToSendOutput.

Referenced by secure_write().

◆ quickdie()

pg_noreturn void quickdie ( SIGNAL_ARGS  )

Definition at line 2931 of file postgres.c.

2932{
2933 sigaddset(&BlockSig, SIGQUIT); /* prevent nested calls */
2934 sigprocmask(SIG_SETMASK, &BlockSig, NULL);
2935
2936 /*
2937 * Prevent interrupts while exiting; though we just blocked signals that
2938 * would queue new interrupts, one may have been pending. We don't want a
2939 * quickdie() downgraded to a mere query cancel.
2940 */
2942
2943 /*
2944 * If we're aborting out of client auth, don't risk trying to send
2945 * anything to the client; we will likely violate the protocol, not to
2946 * mention that we may have interrupted the guts of OpenSSL or some
2947 * authentication library.
2948 */
2951
2952 /*
2953 * Notify the client before exiting, to give a clue on what happened.
2954 *
2955 * It's dubious to call ereport() from a signal handler. It is certainly
2956 * not async-signal safe. But it seems better to try, than to disconnect
2957 * abruptly and leave the client wondering what happened. It's remotely
2958 * possible that we crash or hang while trying to send the message, but
2959 * receiving a SIGQUIT is a sign that something has already gone badly
2960 * wrong, so there's not much to lose. Assuming the postmaster is still
2961 * running, it will SIGKILL us soon if we get stuck for some reason.
2962 *
2963 * One thing we can do to make this a tad safer is to clear the error
2964 * context stack, so that context callbacks are not called. That's a lot
2965 * less code that could be reached here, and the context info is unlikely
2966 * to be very relevant to a SIGQUIT report anyway.
2967 */
2968 error_context_stack = NULL;
2969
2970 /*
2971 * When responding to a postmaster-issued signal, we send the message only
2972 * to the client; sending to the server log just creates log spam, plus
2973 * it's more code that we need to hope will work in a signal handler.
2974 *
2975 * Ideally these should be ereport(FATAL), but then we'd not get control
2976 * back to force the correct type of process exit.
2977 */
2978 switch (GetQuitSignalReason())
2979 {
2980 case PMQUIT_NOT_SENT:
2981 /* Hmm, SIGQUIT arrived out of the blue */
2983 (errcode(ERRCODE_ADMIN_SHUTDOWN),
2984 errmsg("terminating connection because of unexpected SIGQUIT signal")));
2985 break;
2986 case PMQUIT_FOR_CRASH:
2987 /* A crash-and-restart cycle is in progress */
2989 (errcode(ERRCODE_CRASH_SHUTDOWN),
2990 errmsg("terminating connection because of crash of another server process"),
2991 errdetail("The postmaster has commanded this server process to roll back"
2992 " the current transaction and exit, because another"
2993 " server process exited abnormally and possibly corrupted"
2994 " shared memory."),
2995 errhint("In a moment you should be able to reconnect to the"
2996 " database and repeat your command.")));
2997 break;
2998 case PMQUIT_FOR_STOP:
2999 /* Immediate-mode stop */
3001 (errcode(ERRCODE_ADMIN_SHUTDOWN),
3002 errmsg("terminating connection due to immediate shutdown command")));
3003 break;
3004 }
3005
3006 /*
3007 * We DO NOT want to run proc_exit() or atexit() callbacks -- we're here
3008 * because shared memory may be corrupted, so we don't want to try to
3009 * clean up our transaction. Just nail the windows shut and get out of
3010 * town. The callbacks wouldn't be safe to run from a signal handler,
3011 * anyway.
3012 *
3013 * Note we do _exit(2) not _exit(0). This is to force the postmaster into
3014 * a system reset cycle if someone sends a manual SIGQUIT to a random
3015 * backend. This is necessary precisely because we don't clean up our
3016 * shared memory state. (The "dead man switch" mechanism in pmsignal.c
3017 * should ensure the postmaster sees this as a crash, too, but no harm in
3018 * being doubly sure.)
3019 */
3020 _exit(2);
3021}
sigset_t BlockSig
Definition: pqsignal.c:23
#define WARNING_CLIENT_ONLY
Definition: elog.h:38
QuitSignalReason GetQuitSignalReason(void)
Definition: pmsignal.c:213
@ PMQUIT_FOR_STOP
Definition: pmsignal.h:56
@ PMQUIT_FOR_CRASH
Definition: pmsignal.h:55
@ PMQUIT_NOT_SENT
Definition: pmsignal.h:54
bool ClientAuthInProgress
Definition: postmaster.c:372

References BlockSig, ClientAuthInProgress, DestNone, DestRemote, ereport, errcode(), errdetail(), errhint(), errmsg(), error_context_stack, GetQuitSignalReason(), HOLD_INTERRUPTS, PMQUIT_FOR_CRASH, PMQUIT_FOR_STOP, PMQUIT_NOT_SENT, SIGQUIT, WARNING, WARNING_CLIENT_ONLY, and whereToSendOutput.

Referenced by PostgresMain().

◆ ResetUsage()

void ResetUsage ( void  )

◆ set_debug_options()

void set_debug_options ( int  debug_flag,
GucContext  context,
GucSource  source 
)

Definition at line 3684 of file postgres.c.

3685{
3686 if (debug_flag > 0)
3687 {
3688 char debugstr[64];
3689
3690 sprintf(debugstr, "debug%d", debug_flag);
3691 SetConfigOption("log_min_messages", debugstr, context, source);
3692 }
3693 else
3694 SetConfigOption("log_min_messages", "notice", context, source);
3695
3696 if (debug_flag >= 1 && context == PGC_POSTMASTER)
3697 {
3698 SetConfigOption("log_connections", "true", context, source);
3699 SetConfigOption("log_disconnections", "true", context, source);
3700 }
3701 if (debug_flag >= 2)
3702 SetConfigOption("log_statement", "all", context, source);
3703 if (debug_flag >= 3)
3704 SetConfigOption("debug_print_parse", "true", context, source);
3705 if (debug_flag >= 4)
3706 SetConfigOption("debug_print_plan", "true", context, source);
3707 if (debug_flag >= 5)
3708 SetConfigOption("debug_print_rewritten", "true", context, source);
3709}
static rewind_source * source
Definition: pg_rewind.c:89
#define sprintf
Definition: port.h:241

References PGC_POSTMASTER, SetConfigOption(), source, and sprintf.

Referenced by PostmasterMain(), and process_postgres_switches().

◆ set_plan_disabling_options()

bool set_plan_disabling_options ( const char *  arg,
GucContext  context,
GucSource  source 
)

Definition at line 3713 of file postgres.c.

3714{
3715 const char *tmp = NULL;
3716
3717 switch (arg[0])
3718 {
3719 case 's': /* seqscan */
3720 tmp = "enable_seqscan";
3721 break;
3722 case 'i': /* indexscan */
3723 tmp = "enable_indexscan";
3724 break;
3725 case 'o': /* indexonlyscan */
3726 tmp = "enable_indexonlyscan";
3727 break;
3728 case 'b': /* bitmapscan */
3729 tmp = "enable_bitmapscan";
3730 break;
3731 case 't': /* tidscan */
3732 tmp = "enable_tidscan";
3733 break;
3734 case 'n': /* nestloop */
3735 tmp = "enable_nestloop";
3736 break;
3737 case 'm': /* mergejoin */
3738 tmp = "enable_mergejoin";
3739 break;
3740 case 'h': /* hashjoin */
3741 tmp = "enable_hashjoin";
3742 break;
3743 }
3744 if (tmp)
3745 {
3746 SetConfigOption(tmp, "false", context, source);
3747 return true;
3748 }
3749 else
3750 return false;
3751}

References arg, SetConfigOption(), and source.

Referenced by PostmasterMain(), and process_postgres_switches().

◆ ShowUsage()

void ShowUsage ( const char *  title)

Definition at line 5064 of file postgres.c.

5065{
5067 struct timeval user,
5068 sys;
5069 struct timeval elapse_t;
5070 struct rusage r;
5071
5073 gettimeofday(&elapse_t, NULL);
5074 memcpy(&user, &r.ru_utime, sizeof(user));
5075 memcpy(&sys, &r.ru_stime, sizeof(sys));
5076 if (elapse_t.tv_usec < Save_t.tv_usec)
5077 {
5078 elapse_t.tv_sec--;
5079 elapse_t.tv_usec += 1000000;
5080 }
5081 if (r.ru_utime.tv_usec < Save_r.ru_utime.tv_usec)
5082 {
5083 r.ru_utime.tv_sec--;
5084 r.ru_utime.tv_usec += 1000000;
5085 }
5086 if (r.ru_stime.tv_usec < Save_r.ru_stime.tv_usec)
5087 {
5088 r.ru_stime.tv_sec--;
5089 r.ru_stime.tv_usec += 1000000;
5090 }
5091
5092 /*
5093 * The only stats we don't show here are ixrss, idrss, isrss. It takes
5094 * some work to interpret them, and most platforms don't fill them in.
5095 */
5097
5098 appendStringInfoString(&str, "! system usage stats:\n");
5100 "!\t%ld.%06ld s user, %ld.%06ld s system, %ld.%06ld s elapsed\n",
5101 (long) (r.ru_utime.tv_sec - Save_r.ru_utime.tv_sec),
5102 (long) (r.ru_utime.tv_usec - Save_r.ru_utime.tv_usec),
5103 (long) (r.ru_stime.tv_sec - Save_r.ru_stime.tv_sec),
5104 (long) (r.ru_stime.tv_usec - Save_r.ru_stime.tv_usec),
5105 (long) (elapse_t.tv_sec - Save_t.tv_sec),
5106 (long) (elapse_t.tv_usec - Save_t.tv_usec));
5108 "!\t[%ld.%06ld s user, %ld.%06ld s system total]\n",
5109 (long) user.tv_sec,
5110 (long) user.tv_usec,
5111 (long) sys.tv_sec,
5112 (long) sys.tv_usec);
5113#ifndef WIN32
5114
5115 /*
5116 * The following rusage fields are not defined by POSIX, but they're
5117 * present on all current Unix-like systems so we use them without any
5118 * special checks. Some of these could be provided in our Windows
5119 * emulation in src/port/win32getrusage.c with more work.
5120 */
5122 "!\t%ld kB max resident size\n",
5123#if defined(__darwin__)
5124 /* in bytes on macOS */
5125 r.ru_maxrss / 1024
5126#else
5127 /* in kilobytes on most other platforms */
5128 r.ru_maxrss
5129#endif
5130 );
5132 "!\t%ld/%ld [%ld/%ld] filesystem blocks in/out\n",
5133 r.ru_inblock - Save_r.ru_inblock,
5134 /* they only drink coffee at dec */
5135 r.ru_oublock - Save_r.ru_oublock,
5136 r.ru_inblock, r.ru_oublock);
5138 "!\t%ld/%ld [%ld/%ld] page faults/reclaims, %ld [%ld] swaps\n",
5139 r.ru_majflt - Save_r.ru_majflt,
5140 r.ru_minflt - Save_r.ru_minflt,
5141 r.ru_majflt, r.ru_minflt,
5142 r.ru_nswap - Save_r.ru_nswap,
5143 r.ru_nswap);
5145 "!\t%ld [%ld] signals rcvd, %ld/%ld [%ld/%ld] messages rcvd/sent\n",
5146 r.ru_nsignals - Save_r.ru_nsignals,
5147 r.ru_nsignals,
5148 r.ru_msgrcv - Save_r.ru_msgrcv,
5149 r.ru_msgsnd - Save_r.ru_msgsnd,
5150 r.ru_msgrcv, r.ru_msgsnd);
5152 "!\t%ld/%ld [%ld/%ld] voluntary/involuntary context switches\n",
5153 r.ru_nvcsw - Save_r.ru_nvcsw,
5154 r.ru_nivcsw - Save_r.ru_nivcsw,
5155 r.ru_nvcsw, r.ru_nivcsw);
5156#endif /* !WIN32 */
5157
5158 /* remove trailing newline */
5159 if (str.data[str.len - 1] == '\n')
5160 str.data[--str.len] = '\0';
5161
5162 ereport(LOG,
5163 (errmsg_internal("%s", title),
5164 errdetail_internal("%s", str.data)));
5165
5166 pfree(str.data);
5167}
#define __darwin__
Definition: darwin.h:3
int errmsg_internal(const char *fmt,...)
Definition: elog.c:1158
int errdetail_internal(const char *fmt,...)
Definition: elog.c:1231
static char * user
Definition: pg_regress.c:119
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:145
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:230
struct timeval ru_utime
Definition: resource.h:14
struct timeval ru_stime
Definition: resource.h:15

References __darwin__, appendStringInfo(), appendStringInfoString(), ereport, errdetail_internal(), errmsg_internal(), getrusage(), gettimeofday(), initStringInfo(), LOG, pfree(), rusage::ru_stime, rusage::ru_utime, RUSAGE_SELF, Save_r, Save_t, str, and user.

Referenced by _bt_leader_participate_as_worker(), _bt_leafbuild(), _bt_parallel_build_main(), _SPI_pquery(), btbuild(), exec_bind_message(), exec_execute_message(), exec_parse_message(), exec_simple_query(), pg_analyze_and_rewrite_fixedparams(), pg_analyze_and_rewrite_varparams(), pg_analyze_and_rewrite_withcb(), pg_parse_query(), pg_plan_query(), pg_rewrite_query(), PortalRun(), and PortalRunMulti().

◆ StatementCancelHandler()

void StatementCancelHandler ( SIGNAL_ARGS  )

Definition at line 3058 of file postgres.c.

3059{
3060 /*
3061 * Don't joggle the elbow of proc_exit
3062 */
3064 {
3065 InterruptPending = true;
3066 QueryCancelPending = true;
3067 }
3068
3069 /* If we're still here, waken anything waiting on the process latch */
3071}

References InterruptPending, MyLatch, proc_exit_inprogress, QueryCancelPending, and SetLatch().

Referenced by AutoVacLauncherMain(), AutoVacWorkerMain(), BackgroundWorkerMain(), PostgresMain(), and WalSndSignals().

Variable Documentation

◆ client_connection_check_interval

PGDLLIMPORT int client_connection_check_interval
extern

Definition at line 102 of file postgres.c.

Referenced by ProcessInterrupts(), and start_xact_command().

◆ debug_query_string

◆ Log_disconnections

PGDLLIMPORT bool Log_disconnections
extern

Definition at line 94 of file postgres.c.

Referenced by PostgresMain().

◆ log_statement

PGDLLIMPORT int log_statement
extern

Definition at line 96 of file postgres.c.

Referenced by check_log_statement(), and HandleFunctionRequest().

◆ PostAuthDelay

PGDLLIMPORT int PostAuthDelay
extern

◆ restrict_nonsystem_relation_kind

PGDLLIMPORT int restrict_nonsystem_relation_kind
extern

◆ whereToSendOutput