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postgresql/src/include/tcop/tcopprot.h

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Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* tcopprot.h
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
* prototypes for postgres.c.
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
*
Update copyright for 2006. Update scripts.
2006-03-05 16:59:11 +01:00
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
pgindent run for 8.2.
2006-10-04 02:30:14 +02:00
* $PostgreSQL: pgsql/src/include/tcop/tcopprot.h,v 1.84 2006/10/04 00:30:10 momjian Exp $
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
* OLD COMMENTS
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
* This file was created so that other c files could get the two
* function prototypes without having to include tcop.h which single
* handedly includes the whole f*cking tree -- mer 5 Nov. 1991
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
*
*-------------------------------------------------------------------------
*/
#ifndef TCOPPROT_H
#define TCOPPROT_H
Change elog(ERROR) to get back to main loop via a plain sigsetjmp, instead of doing a kill(self, SIGQUIT) and expecting the signal handler to do it. Also, clean up inconsistent definitions of the sigjmp buffer in the several files that already referenced it.
1999-04-20 04:19:59 +02:00
#include "executor/execdesc.h"
Replace max_expr_depth parameter with a max_stack_depth parameter that is measured in kilobytes and checked against actual physical execution stack depth, as per my proposal of 30-Dec. This gives us a fairly bulletproof defense against crashing due to runaway recursive functions.
2004-03-24 23:40:29 +01:00
#include "utils/guc.h"
Change elog(ERROR) to get back to main loop via a plain sigsetjmp, instead of doing a kill(self, SIGQUIT) and expecting the signal handler to do it. Also, clean up inconsistent definitions of the sigjmp buffer in the several files that already referenced it.
1999-04-20 04:19:59 +02:00
Clean up usage-statistics display code (ShowUsage and friends). StatFp is gone, usage messages now go through elog(DEBUG).
2001-11-11 00:51:14 +01:00
Preliminary code cleanup in elog(). Split out some code into utility functions, remove indent support, make sure all strings are marked translatable.
2001-06-08 23:16:49 +02:00
extern CommandDest whereToSendOutput;
Put back encoding-conversion step in processing of incoming queries; I had inadvertently omitted it while rearranging things to support length-counted incoming messages. Also, change the parser's API back to accepting a 'char *' query string instead of 'StringInfo', as the latter wasn't buying us anything except overhead. (I think when I put it in I had some notion of making the parser API 8-bit-clean, but seeing that flex depends on null-terminated input, that's not really ever gonna happen.)
2003-04-27 22:09:44 +02:00
extern DLLIMPORT const char *debug_query_string;
Replace max_expr_depth parameter with a max_stack_depth parameter that is measured in kilobytes and checked against actual physical execution stack depth, as per my proposal of 30-Dec. This gives us a fairly bulletproof defense against crashing due to runaway recursive functions.
2004-03-24 23:40:29 +01:00
extern int max_stack_depth;
Make all command-line options of postmaster and postgres the same. See http://archives.postgresql.org/pgsql-hackers/2006-01/msg00151.php for the complete plan.
2006-01-05 11:07:46 +01:00
extern int PostAuthDelay;
The heralded `Grand Unified Configuration scheme' (GUC) That means you can now set your options in either or all of $PGDATA/configuration, some postmaster option (--enable-fsync=off), or set a SET command. The list of options is in backend/utils/misc/guc.c, documentation will be written post haste. pg_options is gone, so is that pq_geqo config file. Also removed were backend -K, -Q, and -T options (no longer applicable, although -d0 does the same as -Q). Added to configure an --enable-syslog option. changed all callers from TPRINTF to elog(DEBUG)
2000-05-31 02:28:42 +02:00
> >>1. change the type of "log_statement" option from boolean to string, > >>with allowed values of "all, mod, ddl, none" with default "none". OK, here is a patch that implements #1. Here is sample output: test=> set client_min_messages = 'log'; SET test=> set log_statement = 'mod'; SET test=> select 1; ?column? ---------- 1 (1 row) test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> copy test from '/tmp/x'; LOG: statement: copy test from '/tmp/x'; ERROR: relation "test" does not exist test=> copy test to '/tmp/x'; ERROR: relation "test" does not exist test=> prepare xx as select 1; PREPARE test=> prepare xx as update x set y=1; LOG: statement: prepare xx as update x set y=1; ERROR: relation "x" does not exist test=> explain analyze select 1;; QUERY PLAN ------------------------------------------------------------------------------------ Result (cost=0.00..0.01 rows=1 width=0) (actual time=0.006..0.007 rows=1 loops=1) Total runtime: 0.046 ms (2 rows) test=> explain analyze update test set x=1; LOG: statement: explain analyze update test set x=1; ERROR: relation "test" does not exist test=> explain update test set x=1; ERROR: relation "test" does not exist It checks PREPARE and EXECUTE ANALYZE too. The log_statement values are 'none', 'mod', 'ddl', and 'all'. For 'all', it prints before the query is parsed, and for ddl/mod, it does it right after parsing using the node tag (or command tag for CREATE/ALTER/DROP), so any non-parse errors will print after the log line.
2004-04-07 07:05:50 +02:00
/* GUC-configurable parameters */
typedef enum
{
Remove GUC USERLIMIT variable category, making the affected variables plain SUSET instead. Also delay processing of options received in client connection request until after we know if the user is a superuser, so that SUSET values can be set that way by legitimate superusers. Per recent discussion.
2004-11-14 20:35:35 +01:00
LOGSTMT_NONE, /* log no statements */
> >>1. change the type of "log_statement" option from boolean to string, > >>with allowed values of "all, mod, ddl, none" with default "none". OK, here is a patch that implements #1. Here is sample output: test=> set client_min_messages = 'log'; SET test=> set log_statement = 'mod'; SET test=> select 1; ?column? ---------- 1 (1 row) test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> copy test from '/tmp/x'; LOG: statement: copy test from '/tmp/x'; ERROR: relation "test" does not exist test=> copy test to '/tmp/x'; ERROR: relation "test" does not exist test=> prepare xx as select 1; PREPARE test=> prepare xx as update x set y=1; LOG: statement: prepare xx as update x set y=1; ERROR: relation "x" does not exist test=> explain analyze select 1;; QUERY PLAN ------------------------------------------------------------------------------------ Result (cost=0.00..0.01 rows=1 width=0) (actual time=0.006..0.007 rows=1 loops=1) Total runtime: 0.046 ms (2 rows) test=> explain analyze update test set x=1; LOG: statement: explain analyze update test set x=1; ERROR: relation "test" does not exist test=> explain update test set x=1; ERROR: relation "test" does not exist It checks PREPARE and EXECUTE ANALYZE too. The log_statement values are 'none', 'mod', 'ddl', and 'all'. For 'all', it prints before the query is parsed, and for ddl/mod, it does it right after parsing using the node tag (or command tag for CREATE/ALTER/DROP), so any non-parse errors will print after the log line.
2004-04-07 07:05:50 +02:00
LOGSTMT_DDL, /* log data definition statements */
LOGSTMT_MOD, /* log modification statements, plus DDL */
Remove GUC USERLIMIT variable category, making the affected variables plain SUSET instead. Also delay processing of options received in client connection request until after we know if the user is a superuser, so that SUSET values can be set that way by legitimate superusers. Per recent discussion.
2004-11-14 20:35:35 +01:00
LOGSTMT_ALL /* log all statements */
> >>1. change the type of "log_statement" option from boolean to string, > >>with allowed values of "all, mod, ddl, none" with default "none". OK, here is a patch that implements #1. Here is sample output: test=> set client_min_messages = 'log'; SET test=> set log_statement = 'mod'; SET test=> select 1; ?column? ---------- 1 (1 row) test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> update test set x=1; LOG: statement: update test set x=1; ERROR: relation "test" does not exist test=> copy test from '/tmp/x'; LOG: statement: copy test from '/tmp/x'; ERROR: relation "test" does not exist test=> copy test to '/tmp/x'; ERROR: relation "test" does not exist test=> prepare xx as select 1; PREPARE test=> prepare xx as update x set y=1; LOG: statement: prepare xx as update x set y=1; ERROR: relation "x" does not exist test=> explain analyze select 1;; QUERY PLAN ------------------------------------------------------------------------------------ Result (cost=0.00..0.01 rows=1 width=0) (actual time=0.006..0.007 rows=1 loops=1) Total runtime: 0.046 ms (2 rows) test=> explain analyze update test set x=1; LOG: statement: explain analyze update test set x=1; ERROR: relation "test" does not exist test=> explain update test set x=1; ERROR: relation "test" does not exist It checks PREPARE and EXECUTE ANALYZE too. The log_statement values are 'none', 'mod', 'ddl', and 'all'. For 'all', it prints before the query is parsed, and for ddl/mod, it does it right after parsing using the node tag (or command tag for CREATE/ALTER/DROP), so any non-parse errors will print after the log line.
2004-04-07 07:05:50 +02:00
} LogStmtLevel;
extern LogStmtLevel log_statement;
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
#ifndef BOOTSTRAP_INCLUDE
Fix bug noted by Bruce: FETCH in an already-aborted transaction block would crash, due to premature invocation of SetQuerySnapshot(). Clean up problems with handling of multiple queries by splitting pg_parse_and_plan into two routines. The old code would not, for example, do the right thing with END; SELECT... submitted in one query string when it had been in transaction abort state, because it'd decide to skip planning the SELECT before it had executed the END. New arrangement is simpler and doesn't force caller to plan if only parse+rewrite is needed.
2000-04-04 23:44:40 +02:00
Extended query protocol: parse, bind, execute, describe FE/BE messages. Only lightly tested as yet, since libpq doesn't know anything about 'em.
2003-05-05 02:44:56 +02:00
extern List *pg_parse_and_rewrite(const char *query_string,
Oid *paramTypes, int numParams);
Infrastructure for deducing Param types from context, in the same way that the types of untyped string-literal constants are deduced (ie, when coerce_type is applied to 'em, that's what the type must be). Remove the ancient hack of storing the input Param-types array as a global variable, and put the info into ParseState instead. This touches a lot of files because of adjustment of routine parameter lists, but it's really not a large patch. Note: PREPARE statement still insists on exact specification of parameter types, but that could easily be relaxed now, if we wanted to do so.
2003-04-30 00:13:11 +02:00
extern List *pg_parse_query(const char *query_string);
Improve parser so that we can show an error cursor position for errors during parse analysis, not only errors detected in the flex/bison stages. This is per my earlier proposal. This commit includes all the basic infrastructure, but locations are only tracked and reported for errors involving column references, function calls, and operators. More could be done later but this seems like a good set to start with. I've also moved the ReportSyntaxErrorPosition logic out of psql and into libpq, which should make it available to more people --- even within psql this is an improvement because warnings weren't handled by ReportSyntaxErrorPosition.
2006-03-14 23:48:25 +01:00
extern List *pg_analyze_and_rewrite(Node *parsetree, const char *query_string,
pgindent run.
2003-08-04 02:43:34 +02:00
Oid *paramTypes, int numParams);
When using extended-query protocol, postpone planning of unnamed statements until Bind is received, so that actual parameter values are visible to the planner. Make use of the parameter values for estimation purposes (but don't fold them into the actual plan). This buys back most of the potential loss of plan quality that ensues from using out-of-line parameters instead of putting literal values right into the query text. This patch creates a notion of constant-folding expressions 'for estimation purposes only', in which case we can be more aggressive than the normal eval_const_expressions() logic can be. Right now the only difference in behavior is inserting bound values for Params, but it will be interesting to look at other possibilities. One that we've seen come up repeatedly is reducing now() and related functions to current values, so that queries like ... WHERE timestampcol > now() - '1 day' have some chance of being planned effectively. Oliver Jowett, with some kibitzing from Tom Lane.
2004-06-11 03:09:22 +02:00
extern Plan *pg_plan_query(Query *querytree, ParamListInfo boundParams);
extern List *pg_plan_queries(List *querytrees, ParamListInfo boundParams,
Pgindent run for 8.0.
2004-08-29 07:07:03 +02:00
bool needSnapshot);
Replace max_expr_depth parameter with a max_stack_depth parameter that is measured in kilobytes and checked against actual physical execution stack depth, as per my proposal of 30-Dec. This gives us a fairly bulletproof defense against crashing due to runaway recursive functions.
2004-03-24 23:40:29 +01:00
extern bool assign_max_stack_depth(int newval, bool doit, GucSource source);
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* BOOTSTRAP_INCLUDE */
Postgres95 1.01 Distribution - Virgin Sources
1996-07-09 08:22:35 +02:00
Revert removal of signed, volatile, and signal handler arg type tests.
2000-08-29 11:36:51 +02:00
extern void die(SIGNAL_ARGS);
XLOG (and related) changes: * Store two past checkpoint locations, not just one, in pg_control. On startup, we fall back to the older checkpoint if the newer one is unreadable. Also, a physical copy of the newest checkpoint record is kept in pg_control for possible use in disaster recovery (ie, complete loss of pg_xlog). Also add a version number for pg_control itself. Remove archdir from pg_control; it ought to be a GUC parameter, not a special case (not that it's implemented yet anyway). * Suppress successive checkpoint records when nothing has been entered in the WAL log since the last one. This is not so much to avoid I/O as to make it actually useful to keep track of the last two checkpoints. If the things are right next to each other then there's not a lot of redundancy gained... * Change CRC scheme to a true 64-bit CRC, not a pair of 32-bit CRCs on alternate bytes. Polynomial borrowed from ECMA DLT1 standard. * Fix XLOG record length handling so that it will work at BLCKSZ = 32k. * Change XID allocation to work more like OID allocation. (This is of dubious necessity, but I think it's a good idea anyway.) * Fix a number of minor bugs, such as off-by-one logic for XLOG file wraparound at the 4 gig mark. * Add documentation and clean up some coding infelicities; move file format declarations out to include files where planned contrib utilities can get at them. * Checkpoint will now occur every CHECKPOINT_SEGMENTS log segments or every CHECKPOINT_TIMEOUT seconds, whichever comes first. It is also possible to force a checkpoint by sending SIGUSR1 to the postmaster (undocumented feature...) * Defend against kill -9 postmaster by storing shmem block's key and ID in postmaster.pid lockfile, and checking at startup to ensure that no processes are still connected to old shmem block (if it still exists). * Switch backends to accept SIGQUIT rather than SIGUSR1 for emergency stop, for symmetry with postmaster and xlog utilities. Clean up signal handling in bootstrap.c so that xlog utilities launched by postmaster will react to signals better. * Standalone bootstrap now grabs lockfile in target directory, as added insurance against running it in parallel with live postmaster.
2001-03-13 02:17:06 +01:00
extern void quickdie(SIGNAL_ARGS);
Enable SIGTERM and SIGQUIT during client authentication so the postmaster can kill the forked off processes when shutdown is requested. Jan
2001-09-07 18:12:49 +02:00
extern void authdie(SIGNAL_ARGS);
Integrate autovacuum functionality into the backend. There's still a few loose ends to be dealt with, but it seems to work. Alvaro Herrera, based on the contrib code by Matthew O'Connor.
2005-07-14 07:13:45 +02:00
extern void StatementCancelHandler(SIGNAL_ARGS);
Autovacuum loose end mop-up. Provide autovacuum-specific vacuum cost delay and limit, both as global GUCs and as table-specific entries in pg_autovacuum. stats_reset_on_server_start is now OFF by default, but a reset is forced if we did WAL replay. XID-wrap vacuums do not ANALYZE, but do FREEZE if it's a template database. Alvaro Herrera
2005-08-11 23:11:50 +02:00
extern void FloatExceptionHandler(SIGNAL_ARGS);
Push enable/disable of notify and catchup interrupts all the way down to just around the bare recv() call that gets a command from the client. The former placement in PostgresMain was unsafe because the intermediate processing layers (especially SSL) use facilities such as malloc that are not necessarily re-entrant. Per report from counterstorm.com.
2005-06-02 23:03:25 +02:00
extern void prepare_for_client_read(void);
extern void client_read_ended(void);
pgindent run on all C files. Java run to follow. initdb/regression tests pass.
2001-10-25 07:50:21 +02:00
extern int PostgresMain(int argc, char *argv[], const char *username);
Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.
1997-09-08 04:41:22 +02:00
extern void ResetUsage(void);
Clean up usage-statistics display code (ShowUsage and friends). StatFp is gone, usage messages now go through elog(DEBUG).
2001-11-11 00:51:14 +01:00
extern void ShowUsage(const char *title);
Tweak the behavior of log_duration as proposed by Guillaume Smet: rather than being equivalent to setting log_min_duration_statement to zero, this option now forces logging of all query durations, but doesn't force logging of query text. Also, add duration logging coverage for fastpath function calls.
2006-09-08 17:55:53 +02:00
extern int check_log_duration(char *msec_str, bool was_logged);
Remove GUC USERLIMIT variable category, making the affected variables plain SUSET instead. Also delay processing of options received in client connection request until after we know if the user is a superuser, so that SUSET values can be set that way by legitimate superusers. Per recent discussion.
2004-11-14 20:35:35 +01:00
extern void set_debug_options(int debug_flag,
Standard pgindent run for 8.1.
2005-10-15 04:49:52 +02:00
GucContext context, GucSource source);
Make all command-line options of postmaster and postgres the same. See http://archives.postgresql.org/pgsql-hackers/2006-01/msg00151.php for the complete plan.
2006-01-05 11:07:46 +01:00
extern bool set_plan_disabling_options(const char *arg,
pgindent run for 8.2.
2006-10-04 02:30:14 +02:00
GucContext context, GucSource source);
Make all command-line options of postmaster and postgres the same. See http://archives.postgresql.org/pgsql-hackers/2006-01/msg00151.php for the complete plan.
2006-01-05 11:07:46 +01:00
extern const char *get_stats_option_name(const char *arg);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 07:26:15 +01:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 18:46:40 +01:00
#endif /* TCOPPROT_H */
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