online_analyze.c

   1 /*
   2  * Copyright (c) 2011 Teodor Sigaev <teodor@sigaev.ru>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *        notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *        notice, this list of conditions and the following disclaimer in the
  12  *        documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *        may be used to endorse or promote products derived from this software
  15  *        without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include "postgres.h"
  31
  32 #include "pgstat.h"
  33 #include "catalog/namespace.h"
  34 #include "commands/vacuum.h"
  35 #include "executor/executor.h"
  36 #include "nodes/nodes.h"
  37 #include "nodes/parsenodes.h"
  38 #include "storage/bufmgr.h"
  39 #include "utils/builtins.h"
  40 #include "utils/lsyscache.h"
  41 #include "utils/guc.h"
  42 #if PG_VERSION_NUM >= 90200
  43 #include "catalog/pg_class.h"
  44 #include "nodes/primnodes.h"
  45 #include "tcop/utility.h"
  46 #include "utils/rel.h"
  47 #include "utils/relcache.h"
  48 #include "utils/timestamp.h"
  49 #if PG_VERSION_NUM >= 90500
  50 #include "nodes/makefuncs.h"
  51 #endif
  52 #endif
  53
  54 #ifdef PG_MODULE_MAGIC
  55 PG_MODULE_MAGIC;
  56 #endif
  57
  58 static bool online_analyze_enable = true;
  59 static bool online_analyze_verbose = true;
  60 static double online_analyze_scale_factor = 0.1;
  61 static int online_analyze_threshold = 50;
  62 static double online_analyze_min_interval = 10000;
  63
  64 static ExecutorEnd_hook_type oldExecutorEndHook = NULL;
  65 #if PG_VERSION_NUM >= 90200
  66 static ProcessUtility_hook_type oldProcessUtilityHook = NULL;
  67 #endif
  68
  69 typedef enum
  70 {
  71         OATT_ALL                = 0x03,
  72         OATT_PERSISTENT = 0x01,
  73         OATT_TEMPORARY  = 0x02,
  74         OATT_NONE               = 0x00
  75 } OnlineAnalyzeTableType;
  76
  77 static const struct config_enum_entry online_analyze_table_type_options[] =
  78 {
  79         {"all", OATT_ALL, false},
  80         {"persistent", OATT_PERSISTENT, false},
  81         {"temporary", OATT_TEMPORARY, false},
  82         {"none", OATT_NONE, false},
  83         {NULL, 0, false},
  84 };
  85
  86 static int online_analyze_table_type = (int)OATT_ALL;
  87
  88 typedef struct TableList {
  89         int             nTables;
  90         Oid             *tables;
  91         char    *tableStr;
  92 } TableList;
  93
  94 static TableList excludeTables = {0, NULL, NULL};
  95 static TableList includeTables = {0, NULL, NULL};
  96
  97 static int
  98 oid_cmp(const void *a, const void *b)
  99 {
 100         if (*(Oid*)a == *(Oid*)b)
 101                 return 0;
 102         return (*(Oid*)a > *(Oid*)b) ? 1 : -1;
 103 }
 104
 105 static const char *
 106 tableListAssign(const char * newval, bool doit, TableList *tbl)
 107 {
 108         char       *rawname;
 109         List       *namelist;
 110         ListCell   *l;
 111         Oid         *newOids = NULL;
 112         int         nOids = 0,
 113                                 i = 0;
 114
 115         rawname = pstrdup(newval);
 116
 117         if (!SplitIdentifierString(rawname, ',', &namelist))
 118                 goto cleanup;
 119
 120         if (doit)
 121         {
 122                 nOids = list_length(namelist);
 123                 newOids = malloc(sizeof(Oid) * (nOids+1));
 124                 if (!newOids)
 125                         elog(ERROR,"could not allocate %d bytes", (int)(sizeof(Oid) * (nOids+1)));
 126         }
 127
 128         foreach(l, namelist)
 129         {
 130                 char        *curname = (char *) lfirst(l);
 131 #if PG_VERSION_NUM >= 90200
 132                 Oid         relOid = RangeVarGetRelid(makeRangeVarFromNameList(stringToQualifiedNameList(curname)),
 133                                                                                                 NoLock, true);
 134 #else
 135                 Oid         relOid = RangeVarGetRelid(makeRangeVarFromNameList(stringToQualifiedNameList(curname)),
 136                                                                                                 true);
 137 #endif
 138
 139                 if (relOid == InvalidOid)
 140                 {
 141 #if PG_VERSION_NUM >= 90100
 142                         if (doit == false)
 143 #endif
 144                         elog(WARNING,"'%s' does not exist", curname);
 145                         continue;
 146                 }
 147                 else if ( get_rel_relkind(relOid) != RELKIND_RELATION )
 148                 {
 149 #if PG_VERSION_NUM >= 90100
 150                         if (doit == false)
 151 #endif
 152                                 elog(WARNING,"'%s' is not an table", curname);
 153                         continue;
 154                 }
 155                 else if (doit)
 156                 {
 157                         newOids[i++] = relOid;
 158                 }
 159         }
 160
 161         if (doit)
 162         {
 163                 tbl->nTables = i;
 164                 if (tbl->tables)
 165                         free(tbl->tables);
 166                 tbl->tables = newOids;
 167                 if (tbl->nTables > 1)
 168                         qsort(tbl->tables, tbl->nTables, sizeof(tbl->tables[0]), oid_cmp);
 169         }
 170
 171         pfree(rawname);
 172         list_free(namelist);
 173
 174         return newval;
 175
 176 cleanup:
 177         if (newOids)
 178                 free(newOids);
 179         pfree(rawname);
 180         list_free(namelist);
 181         return NULL;
 182 }
 183
 184 #if PG_VERSION_NUM >= 90100
 185 static bool
 186 excludeTablesCheck(char **newval, void **extra, GucSource source)
 187 {
 188         char *val;
 189
 190         val = (char*)tableListAssign(*newval, false, &excludeTables);
 191
 192         if (val)
 193         {
 194                 *newval = val;
 195                 return true;
 196         }
 197
 198         return false;
 199 }
 200
 201 static void
 202 excludeTablesAssign(const char *newval, void *extra)
 203 {
 204         tableListAssign(newval, true, &excludeTables);
 205 }
 206
 207 static bool
 208 includeTablesCheck(char **newval, void **extra, GucSource source)
 209 {
 210         char *val;
 211
 212         val = (char*)tableListAssign(*newval, false, &includeTables);
 213
 214         if (val)
 215         {
 216                 *newval = val;
 217                 return true;
 218         }
 219
 220         return false;
 221 }
 222
 223 static void
 224 includeTablesAssign(const char *newval, void *extra)
 225 {
 226         tableListAssign(newval, true, &excludeTables);
 227 }
 228
 229 #else /* PG_VERSION_NUM < 90100 */
 230
 231 static const char *
 232 excludeTablesAssign(const char * newval, bool doit, GucSource source)
 233 {
 234         return tableListAssign(newval, doit, &excludeTables);
 235 }
 236
 237 static const char *
 238 includeTablesAssign(const char * newval, bool doit, GucSource source)
 239 {
 240         return tableListAssign(newval, doit, &includeTables);
 241 }
 242
 243 #endif
 244
 245 static const char*
 246 tableListShow(TableList *tbl)
 247 {
 248         char    *val, *ptr;
 249         int     i,
 250                         len;
 251
 252         len = 1 /* \0 */ + tbl->nTables * (2 * NAMEDATALEN + 2 /* ', ' */ + 1 /* . */);
 253         ptr = val = palloc(len);
 254         *ptr ='\0';
 255         for(i=0; i<tbl->nTables; i++)
 256         {
 257                 char    *relname = get_rel_name(tbl->tables[i]);
 258                 Oid     nspOid = get_rel_namespace(tbl->tables[i]);
 259                 char    *nspname = get_namespace_name(nspOid);
 260
 261                 if ( relname == NULL || nspOid == InvalidOid || nspname == NULL )
 262                         continue;
 263
 264                 ptr += snprintf(ptr, len - (ptr - val), "%s%s.%s",
 265                                                                                                         (i==0) ? "" : ", ",
 266                                                                                                         nspname, relname);
 267         }
 268
 269         return val;
 270 }
 271
 272 static const char*
 273 excludeTablesShow(void)
 274 {
 275         return tableListShow(&excludeTables);
 276 }
 277
 278 static const char*
 279 includeTablesShow(void)
 280 {
 281         return tableListShow(&includeTables);
 282 }
 283
 284 static bool
 285 matchOid(TableList *tbl, Oid oid)
 286 {
 287         Oid     *StopLow = tbl->tables,
 288                 *StopHigh = tbl->tables + tbl->nTables,
 289                 *StopMiddle;
 290
 291         /* Loop invariant: StopLow <= val < StopHigh */
 292         while (StopLow < StopHigh)
 293         {
 294                 StopMiddle = StopLow + ((StopHigh - StopLow) >> 1);
 295
 296                 if (*StopMiddle == oid)
 297                         return true;
 298                 else  if (*StopMiddle < oid)
 299                         StopLow = StopMiddle + 1;
 300                 else
 301                         StopHigh = StopMiddle;
 302         }
 303
 304         return false;
 305 }
 306
 307 #if PG_VERSION_NUM >= 90500
 308 static RangeVar*
 309 makeRangeVarFromOid(Oid relOid)
 310 {
 311         return makeRangeVar(
 312                                 get_namespace_name(get_rel_namespace(relOid)),
 313                                 get_rel_name(relOid),
 314                                 -1
 315                         );
 316
 317 }
 318 #endif
 319
 320 static void
 321 makeAnalyze(Oid relOid, CmdType operation, uint32 naffected)
 322 {
 323         PgStat_StatTabEntry             *tabentry;
 324         TimestampTz                     now = GetCurrentTimestamp();
 325
 326         if (relOid == InvalidOid)
 327                 return;
 328
 329         if (get_rel_relkind(relOid) != RELKIND_RELATION)
 330                 return;
 331
 332         tabentry = pgstat_fetch_stat_tabentry(relOid);
 333
 334 #if PG_VERSION_NUM >= 90000
 335 #define changes_since_analyze(t)        ((t)->changes_since_analyze)
 336 #else
 337 #define changes_since_analyze(t)        ((t)->n_live_tuples + (t)->n_dead_tuples - (t)->last_anl_tuples)
 338 #endif
 339
 340         if (
 341                 tabentry == NULL /* a new table */ ||
 342                 (
 343                         /* do not analyze too often, if both stamps are exceeded the go */
 344                         TimestampDifferenceExceeds(tabentry->analyze_timestamp, now, online_analyze_min_interval) &&
 345                         TimestampDifferenceExceeds(tabentry->autovac_analyze_timestamp, now, online_analyze_min_interval) &&
 346                         /* be in sync with relation_needs_vacanalyze */
 347                         ((double)(changes_since_analyze(tabentry) + naffected)) >=
 348                                 online_analyze_scale_factor * ((double)(tabentry->n_dead_tuples + tabentry->n_live_tuples)) +
 349                                         (double)online_analyze_threshold
 350                 )
 351         )
 352         {
 353 #if PG_VERSION_NUM < 90500
 354                 VacuumStmt                              vacstmt;
 355 #else
 356                 VacuumParams                    vacstmt;
 357 #endif
 358                 TimestampTz                             startStamp, endStamp;
 359
 360                 memset(&startStamp, 0, sizeof(startStamp)); /* keep compiler quiet */
 361
 362                 /*
 363                  * includeTables overwrites excludeTables
 364                  */
 365                 switch(online_analyze_table_type)
 366                 {
 367                         case OATT_ALL:
 368                                 if (matchOid(&excludeTables, relOid) == true && matchOid(&includeTables, relOid) == false)
 369                                         return;
 370                                 break;
 371                         case OATT_NONE:
 372                                 if (matchOid(&includeTables, relOid) == false)
 373                                         return;
 374                                 break;
 375                         case OATT_TEMPORARY:
 376                         case OATT_PERSISTENT:
 377                         default:
 378                                 {
 379                                         Relation                                rel;
 380                                         OnlineAnalyzeTableType  reltype;
 381
 382                                         rel = RelationIdGetRelation(relOid);
 383                                         reltype =
 384 #if PG_VERSION_NUM >= 90100
 385                                                 (rel->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
 386 #else
 387                                                 (rel->rd_istemp || rel->rd_islocaltemp)
 388 #endif
 389                                                         ? OATT_TEMPORARY : OATT_PERSISTENT;
 390                                         RelationClose(rel);
 391
 392                                         /*
 393                                          * skip analyze if relation's type doesn't not match online_analyze_table_type
 394                                          */
 395                                         if ((online_analyze_table_type & reltype) == 0 || matchOid(&excludeTables, relOid) == true)
 396                                         {
 397                                                 if (matchOid(&includeTables, relOid) == false)
 398                                                         return;
 399                                         }
 400                                 }
 401                                 break;
 402                 }
 403
 404                 memset(&vacstmt, 0, sizeof(vacstmt));
 405
 406                 vacstmt.freeze_min_age = -1;
 407                 vacstmt.freeze_table_age = -1; /* ??? */
 408
 409 #if PG_VERSION_NUM < 90500
 410                 vacstmt.type = T_VacuumStmt;
 411                 vacstmt.relation = NULL;
 412                 vacstmt.va_cols = NIL;
 413 #if PG_VERSION_NUM >= 90000
 414                 vacstmt.options = VACOPT_ANALYZE;
 415                 if (online_analyze_verbose)
 416                         vacstmt.options |= VACOPT_VERBOSE;
 417 #else
 418                 vacstmt.vacuum = vacstmt.full = false;
 419                 vacstmt.analyze = true;
 420                 vacstmt.verbose = online_analyze_verbose;
 421 #endif
 422 #else
 423                 vacstmt.multixact_freeze_min_age = -1;
 424                 vacstmt.multixact_freeze_table_age = -1;
 425                 vacstmt.log_min_duration = -1;
 426 #endif
 427
 428                 if (online_analyze_verbose)
 429                         startStamp = GetCurrentTimestamp();
 430
 431                 analyze_rel(relOid,
 432 #if PG_VERSION_NUM < 90500
 433                         &vacstmt
 434 #if PG_VERSION_NUM >= 90018
 435                         , true
 436 #endif
 437                         , GetAccessStrategy(BAS_VACUUM)
 438 #if (PG_VERSION_NUM >= 90000) && (PG_VERSION_NUM < 90004)
 439                         , true
 440 #endif
 441 #else
 442                         makeRangeVarFromOid(relOid), VACOPT_ANALYZE | ((online_analyze_verbose) ? VACOPT_VERBOSE : 0),
 443                         &vacstmt, NULL, true, GetAccessStrategy(BAS_VACUUM)
 444 #endif
 445                 );
 446
 447                 if (online_analyze_verbose)
 448                 {
 449                         long    secs;
 450                         int             microsecs;
 451
 452                         endStamp = GetCurrentTimestamp();
 453                         TimestampDifference(startStamp, endStamp, &secs, &microsecs);
 454                         elog(INFO, "analyze \"%s\" took %.02f seconds",
 455                                 get_rel_name(relOid), ((double)secs) + ((double)microsecs)/1.0e6);
 456                 }
 457
 458
 459                 if (tabentry == NULL)
 460                 {
 461                         /* new table */
 462                         pgstat_clear_snapshot();
 463                 }
 464                 else
 465                 {
 466                         /* update last analyze timestamp in local memory of backend */
 467                         tabentry->analyze_timestamp = now;
 468                 }
 469         }
 470 #if PG_VERSION_NUM >= 90000
 471         else if (tabentry != NULL)
 472         {
 473                 tabentry->changes_since_analyze += naffected;
 474         }
 475 #endif
 476 }
 477
 478 extern PGDLLIMPORT void onlineAnalyzeHooker(QueryDesc *queryDesc);
 479 void
 480 onlineAnalyzeHooker(QueryDesc *queryDesc)
 481 {
 482         uint32  naffected = 0;
 483
 484         if (queryDesc->estate)
 485                 naffected = queryDesc->estate->es_processed;
 486
 487         if (online_analyze_enable && queryDesc->plannedstmt &&
 488                         (queryDesc->operation == CMD_INSERT ||
 489                          queryDesc->operation == CMD_UPDATE ||
 490                          queryDesc->operation == CMD_DELETE
 491 #if PG_VERSION_NUM < 90200
 492                          || (queryDesc->operation == CMD_SELECT && queryDesc->plannedstmt->intoClause)
 493 #endif
 494                          ))
 495         {
 496 #if PG_VERSION_NUM < 90200
 497                 if (queryDesc->operation == CMD_SELECT)
 498                 {
 499                         Oid     relOid = RangeVarGetRelid(queryDesc->plannedstmt->intoClause->rel, true);
 500
 501                         makeAnalyze(relOid, queryDesc->operation, naffected);
 502                 }
 503                 else
 504 #endif
 505                 if (queryDesc->plannedstmt->resultRelations &&
 506                                  queryDesc->plannedstmt->rtable)
 507                 {
 508                         ListCell        *l;
 509
 510                         foreach(l, queryDesc->plannedstmt->resultRelations)
 511                         {
 512                                 int                     n = lfirst_int(l);
 513                                 RangeTblEntry   *rte = list_nth(queryDesc->plannedstmt->rtable, n-1);
 514
 515                                 if (rte->rtekind == RTE_RELATION)
 516                                         makeAnalyze(rte->relid, queryDesc->operation, naffected);
 517                         }
 518                 }
 519         }
 520
 521         if (oldExecutorEndHook)
 522                 oldExecutorEndHook(queryDesc);
 523         else
 524                 standard_ExecutorEnd(queryDesc);
 525 }
 526
 527 #if PG_VERSION_NUM >= 90200
 528 static void
 529 onlineAnalyzeHookerUtility(Node *parsetree, const char *queryString,
 530 #if PG_VERSION_NUM >= 90300
 531                                                         ProcessUtilityContext context, ParamListInfo params,
 532 #else
 533                                                         ParamListInfo params, bool isTopLevel,
 534 #endif
 535                                                         DestReceiver *dest, char *completionTag) {
 536         RangeVar        *tblname = NULL;
 537
 538         if (IsA(parsetree, CreateTableAsStmt) && ((CreateTableAsStmt*)parsetree)->into)
 539                 tblname = (RangeVar*)copyObject(((CreateTableAsStmt*)parsetree)->into->rel);
 540
 541         if (oldProcessUtilityHook)
 542                 oldProcessUtilityHook(parsetree, queryString,
 543 #if PG_VERSION_NUM >= 90300
 544                                                           context, params,
 545 #else
 546                                                           params, isTopLevel,
 547 #endif
 548                                                           dest, completionTag);
 549         else
 550                 standard_ProcessUtility(parsetree, queryString,
 551 #if PG_VERSION_NUM >= 90300
 552                                                                 context, params,
 553 #else
 554                                                                 params, isTopLevel,
 555 #endif
 556                                                                 dest, completionTag);
 557
 558         if (tblname) {
 559                 Oid     tblOid = RangeVarGetRelid(tblname, NoLock, true);
 560
 561                 makeAnalyze(tblOid, CMD_INSERT, 0);
 562         }
 563 }
 564 #endif
 565
 566 void _PG_init(void);
 567 void
 568 _PG_init(void)
 569 {
 570         oldExecutorEndHook = ExecutorEnd_hook;
 571
 572         ExecutorEnd_hook = onlineAnalyzeHooker;
 573
 574 #if PG_VERSION_NUM >= 90200
 575         oldProcessUtilityHook = ProcessUtility_hook;
 576
 577         ProcessUtility_hook = onlineAnalyzeHookerUtility;
 578 #endif
 579
 580
 581         DefineCustomBoolVariable(
 582                 "online_analyze.enable",
 583                 "Enable on-line analyze",
 584                 "Enables analyze of table directly after insert/update/delete/select into",
 585                 &online_analyze_enable,
 586 #if PG_VERSION_NUM >= 80400
 587                 online_analyze_enable,
 588 #endif
 589                 PGC_USERSET,
 590 #if PG_VERSION_NUM >= 80400
 591                 GUC_NOT_IN_SAMPLE,
 592 #if PG_VERSION_NUM >= 90100
 593                 NULL,
 594 #endif
 595 #endif
 596                 NULL,
 597                 NULL
 598         );
 599
 600         DefineCustomBoolVariable(
 601                 "online_analyze.verbose",
 602                 "Verbosity of on-line analyze",
 603                 "Make ANALYZE VERBOSE after table's changes",
 604                 &online_analyze_verbose,
 605 #if PG_VERSION_NUM >= 80400
 606                 online_analyze_verbose,
 607 #endif
 608                 PGC_USERSET,
 609 #if PG_VERSION_NUM >= 80400
 610                 GUC_NOT_IN_SAMPLE,
 611 #if PG_VERSION_NUM >= 90100
 612                 NULL,
 613 #endif
 614 #endif
 615                 NULL,
 616                 NULL
 617         );
 618
 619     DefineCustomRealVariable(
 620                 "online_analyze.scale_factor",
 621                 "fraction of table size to start on-line analyze",
 622                 "fraction of table size to start on-line analyze",
 623                 &online_analyze_scale_factor,
 624 #if PG_VERSION_NUM >= 80400
 625                 online_analyze_scale_factor,
 626 #endif
 627                 0.0,
 628                 1.0,
 629                 PGC_USERSET,
 630 #if PG_VERSION_NUM >= 80400
 631                 GUC_NOT_IN_SAMPLE,
 632 #if PG_VERSION_NUM >= 90100
 633                 NULL,
 634 #endif
 635 #endif
 636                 NULL,
 637                 NULL
 638         );
 639
 640     DefineCustomIntVariable(
 641                 "online_analyze.threshold",
 642                 "min number of row updates before on-line analyze",
 643                 "min number of row updates before on-line analyze",
 644                 &online_analyze_threshold,
 645 #if PG_VERSION_NUM >= 80400
 646                 online_analyze_threshold,
 647 #endif
 648                 0,
 649                 0x7fffffff,
 650                 PGC_USERSET,
 651 #if PG_VERSION_NUM >= 80400
 652                 GUC_NOT_IN_SAMPLE,
 653 #if PG_VERSION_NUM >= 90100
 654                 NULL,
 655 #endif
 656 #endif
 657                 NULL,
 658                 NULL
 659         );
 660
 661     DefineCustomRealVariable(
 662                 "online_analyze.min_interval",
 663                 "minimum time interval between analyze call (in milliseconds)",
 664                 "minimum time interval between analyze call (in milliseconds)",
 665                 &online_analyze_min_interval,
 666 #if PG_VERSION_NUM >= 80400
 667                 online_analyze_min_interval,
 668 #endif
 669                 0.0,
 670                 1e30,
 671                 PGC_USERSET,
 672 #if PG_VERSION_NUM >= 80400
 673                 GUC_NOT_IN_SAMPLE,
 674 #if PG_VERSION_NUM >= 90100
 675                 NULL,
 676 #endif
 677 #endif
 678                 NULL,
 679                 NULL
 680         );
 681
 682         DefineCustomEnumVariable(
 683                 "online_analyze.table_type",
 684                 "Type(s) of table for online analyze: all(default), persistent, temporary, none",
 685                 NULL,
 686                 &online_analyze_table_type,
 687 #if PG_VERSION_NUM >= 80400
 688                 online_analyze_table_type,
 689 #endif
 690                 online_analyze_table_type_options,
 691                 PGC_USERSET,
 692 #if PG_VERSION_NUM >= 80400
 693         GUC_NOT_IN_SAMPLE,
 694 #if PG_VERSION_NUM >= 90100
 695                 NULL,
 696 #endif
 697 #endif
 698                 NULL,
 699                 NULL
 700         );
 701
 702     DefineCustomStringVariable(
 703                 "online_analyze.exclude_tables",
 704                 "List of tables which will not online analyze",
 705                 NULL,
 706                 &excludeTables.tableStr,
 707 #if PG_VERSION_NUM >= 80400
 708                 "",
 709 #endif
 710                 PGC_USERSET,
 711                 0,
 712 #if PG_VERSION_NUM >= 90100
 713                 excludeTablesCheck,
 714                 excludeTablesAssign,
 715 #else
 716                 excludeTablesAssign,
 717 #endif
 718                 excludeTablesShow
 719         );
 720
 721     DefineCustomStringVariable(
 722                 "online_analyze.include_tables",
 723                 "List of tables which will online analyze",
 724                 NULL,
 725                 &includeTables.tableStr,
 726 #if PG_VERSION_NUM >= 80400
 727                 "",
 728 #endif
 729                 PGC_USERSET,
 730                 0,
 731 #if PG_VERSION_NUM >= 90100
 732                 includeTablesCheck,
 733                 includeTablesAssign,
 734 #else
 735                 includeTablesAssign,
 736 #endif
 737                 includeTablesShow
 738         );
 739 }
 740
 741 void _PG_fini(void);
 742 void
 743 _PG_fini(void)
 744 {
 745         ExecutorEnd_hook = oldExecutorEndHook;
 746 #if PG_VERSION_NUM >= 90200
 747         ProcessUtility_hook = oldProcessUtilityHook;
 748 #endif
 749
 750         if (excludeTables.tables)
 751                 free(excludeTables.tables);
 752         if (includeTables.tables)
 753                 free(includeTables.tables);
 754
 755         excludeTables.tables = includeTables.tables = NULL;
 756         excludeTables.nTables = includeTables.nTables = 0;
 757 }