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",
 126                                  (int)(sizeof(Oid) * (nOids+1)));
 127         }
 128
 129         foreach(l, namelist)
 130         {
 131                 char    *curname = (char *) lfirst(l);
 132 #if PG_VERSION_NUM >= 90200
 133                 Oid             relOid = RangeVarGetRelid(makeRangeVarFromNameList(
 134                                                         stringToQualifiedNameList(curname)), NoLock, true);
 135 #else
 136                 Oid             relOid = RangeVarGetRelid(makeRangeVarFromNameList(
 137                                                         stringToQualifiedNameList(curname)), true);
 138 #endif
 139
 140                 if (relOid == InvalidOid)
 141                 {
 142 #if PG_VERSION_NUM >= 90100
 143                         if (doit == false)
 144 #endif
 145                         elog(WARNING,"'%s' does not exist", curname);
 146                         continue;
 147                 }
 148                 else if ( get_rel_relkind(relOid) != RELKIND_RELATION )
 149                 {
 150 #if PG_VERSION_NUM >= 90100
 151                         if (doit == false)
 152 #endif
 153                                 elog(WARNING,"'%s' is not an table", curname);
 154                         continue;
 155                 }
 156                 else if (doit)
 157                 {
 158                         newOids[i++] = relOid;
 159                 }
 160         }
 161
 162         if (doit)
 163         {
 164                 tbl->nTables = i;
 165                 if (tbl->tables)
 166                         free(tbl->tables);
 167                 tbl->tables = newOids;
 168                 if (tbl->nTables > 1)
 169                         qsort(tbl->tables, tbl->nTables, sizeof(tbl->tables[0]), oid_cmp);
 170         }
 171
 172         pfree(rawname);
 173         list_free(namelist);
 174
 175         return newval;
 176
 177 cleanup:
 178         if (newOids)
 179                 free(newOids);
 180         pfree(rawname);
 181         list_free(namelist);
 182         return NULL;
 183 }
 184
 185 #if PG_VERSION_NUM >= 90100
 186 static bool
 187 excludeTablesCheck(char **newval, void **extra, GucSource source)
 188 {
 189         char *val;
 190
 191         val = (char*)tableListAssign(*newval, false, &excludeTables);
 192
 193         if (val)
 194         {
 195                 *newval = val;
 196                 return true;
 197         }
 198
 199         return false;
 200 }
 201
 202 static void
 203 excludeTablesAssign(const char *newval, void *extra)
 204 {
 205         tableListAssign(newval, true, &excludeTables);
 206 }
 207
 208 static bool
 209 includeTablesCheck(char **newval, void **extra, GucSource source)
 210 {
 211         char *val;
 212
 213         val = (char*)tableListAssign(*newval, false, &includeTables);
 214
 215         if (val)
 216         {
 217                 *newval = val;
 218                 return true;
 219         }
 220
 221         return false;
 222 }
 223
 224 static void
 225 includeTablesAssign(const char *newval, void *extra)
 226 {
 227         tableListAssign(newval, true, &excludeTables);
 228 }
 229
 230 #else /* PG_VERSION_NUM < 90100 */
 231
 232 static const char *
 233 excludeTablesAssign(const char * newval, bool doit, GucSource source)
 234 {
 235         return tableListAssign(newval, doit, &excludeTables);
 236 }
 237
 238 static const char *
 239 includeTablesAssign(const char * newval, bool doit, GucSource source)
 240 {
 241         return tableListAssign(newval, doit, &includeTables);
 242 }
 243
 244 #endif
 245
 246 static const char*
 247 tableListShow(TableList *tbl)
 248 {
 249         char    *val, *ptr;
 250         int             i,
 251                         len;
 252
 253         len = 1 /* \0 */ + tbl->nTables * (2 * NAMEDATALEN + 2 /* ', ' */ + 1 /* . */);
 254         ptr = val = palloc(len);
 255         *ptr ='\0';
 256         for(i=0; i<tbl->nTables; i++)
 257         {
 258                 char    *relname = get_rel_name(tbl->tables[i]);
 259                 Oid             nspOid = get_rel_namespace(tbl->tables[i]);
 260                 char    *nspname = get_namespace_name(nspOid);
 261
 262                 if ( relname == NULL || nspOid == InvalidOid || nspname == NULL )
 263                         continue;
 264
 265                 ptr += snprintf(ptr, len - (ptr - val), "%s%s.%s",
 266                                                                                                         (i==0) ? "" : ", ",
 267                                                                                                         nspname, relname);
 268         }
 269
 270         return val;
 271 }
 272
 273 static const char*
 274 excludeTablesShow(void)
 275 {
 276         return tableListShow(&excludeTables);
 277 }
 278
 279 static const char*
 280 includeTablesShow(void)
 281 {
 282         return tableListShow(&includeTables);
 283 }
 284
 285 static bool
 286 matchOid(TableList *tbl, Oid oid)
 287 {
 288         Oid     *StopLow = tbl->tables,
 289                 *StopHigh = tbl->tables + tbl->nTables,
 290                 *StopMiddle;
 291
 292         /* Loop invariant: StopLow <= val < StopHigh */
 293         while (StopLow < StopHigh)
 294         {
 295                 StopMiddle = StopLow + ((StopHigh - StopLow) >> 1);
 296
 297                 if (*StopMiddle == oid)
 298                         return true;
 299                 else  if (*StopMiddle < oid)
 300                         StopLow = StopMiddle + 1;
 301                 else
 302                         StopHigh = StopMiddle;
 303         }
 304
 305         return false;
 306 }
 307
 308 #if PG_VERSION_NUM >= 90500
 309 static RangeVar*
 310 makeRangeVarFromOid(Oid relOid)
 311 {
 312         return makeRangeVar(
 313                                 get_namespace_name(get_rel_namespace(relOid)),
 314                                 get_rel_name(relOid),
 315                                 -1
 316                         );
 317
 318 }
 319 #endif
 320
 321 static void
 322 makeAnalyze(Oid relOid, CmdType operation, int32 naffected)
 323 {
 324         PgStat_StatTabEntry             *tabentry;
 325         TimestampTz                             now = GetCurrentTimestamp();
 326
 327         if (relOid == InvalidOid)
 328                 return;
 329
 330         if (naffected == 0)
 331                 /* return if there is not changes */
 332                 return;
 333         else if (naffected < 0)
 334                 /* number if affected rows is unknown */
 335                 naffected = 0;
 336
 337         if (get_rel_relkind(relOid) != RELKIND_RELATION)
 338                 return;
 339
 340         tabentry = pgstat_fetch_stat_tabentry(relOid);
 341
 342 #if PG_VERSION_NUM >= 90000
 343 #define changes_since_analyze(t)        ((t)->changes_since_analyze)
 344 #else
 345 #define changes_since_analyze(t)        ((t)->n_live_tuples + (t)->n_dead_tuples - (t)->last_anl_tuples)
 346 #endif
 347
 348         if (
 349                 tabentry == NULL /* a new table */ ||
 350                 (
 351                         /* do not analyze too often, if both stamps are exceeded the go */
 352                         TimestampDifferenceExceeds(tabentry->analyze_timestamp, now, online_analyze_min_interval) &&
 353                         TimestampDifferenceExceeds(tabentry->autovac_analyze_timestamp, now, online_analyze_min_interval) &&
 354                         /* be in sync with relation_needs_vacanalyze */
 355                         ((double)(changes_since_analyze(tabentry) + naffected)) >=
 356                                 online_analyze_scale_factor * ((double)(tabentry->n_dead_tuples + tabentry->n_live_tuples)) +
 357                                         (double)online_analyze_threshold
 358                 )
 359         )
 360         {
 361 #if PG_VERSION_NUM < 90500
 362                 VacuumStmt                              vacstmt;
 363 #else
 364                 VacuumParams                    vacstmt;
 365 #endif
 366                 TimestampTz                             startStamp, endStamp;
 367
 368                 memset(&startStamp, 0, sizeof(startStamp)); /* keep compiler quiet */
 369
 370                 /*
 371                  * includeTables overwrites excludeTables
 372                  */
 373                 switch(online_analyze_table_type)
 374                 {
 375                         case OATT_ALL:
 376                                 if (matchOid(&excludeTables, relOid) == true &&
 377                                         matchOid(&includeTables, relOid) == false)
 378                                         return;
 379                                 break;
 380                         case OATT_NONE:
 381                                 if (matchOid(&includeTables, relOid) == false)
 382                                         return;
 383                                 break;
 384                         case OATT_TEMPORARY:
 385                         case OATT_PERSISTENT:
 386                         default:
 387                                 {
 388                                         Relation                                rel;
 389                                         OnlineAnalyzeTableType  reltype;
 390
 391                                         rel = RelationIdGetRelation(relOid);
 392                                         reltype =
 393 #if PG_VERSION_NUM >= 90100
 394                                                 (rel->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
 395 #else
 396                                                 (rel->rd_istemp || rel->rd_islocaltemp)
 397 #endif
 398                                                         ? OATT_TEMPORARY : OATT_PERSISTENT;
 399                                         RelationClose(rel);
 400
 401                                         /*
 402                                          * skip analyze if relation's type doesn't not match
 403                                          * online_analyze_table_type
 404                                          */
 405                                         if ((online_analyze_table_type & reltype) == 0 ||
 406                                                 matchOid(&excludeTables, relOid) == true)
 407                                         {
 408                                                 if (matchOid(&includeTables, relOid) == false)
 409                                                         return;
 410                                         }
 411                                 }
 412                                 break;
 413                 }
 414
 415                 memset(&vacstmt, 0, sizeof(vacstmt));
 416
 417                 vacstmt.freeze_min_age = -1;
 418                 vacstmt.freeze_table_age = -1; /* ??? */
 419
 420 #if PG_VERSION_NUM < 90500
 421                 vacstmt.type = T_VacuumStmt;
 422                 vacstmt.relation = NULL;
 423                 vacstmt.va_cols = NIL;
 424 #if PG_VERSION_NUM >= 90000
 425                 vacstmt.options = VACOPT_ANALYZE;
 426                 if (online_analyze_verbose)
 427                         vacstmt.options |= VACOPT_VERBOSE;
 428 #else
 429                 vacstmt.vacuum = vacstmt.full = false;
 430                 vacstmt.analyze = true;
 431                 vacstmt.verbose = online_analyze_verbose;
 432 #endif
 433 #else
 434                 vacstmt.multixact_freeze_min_age = -1;
 435                 vacstmt.multixact_freeze_table_age = -1;
 436                 vacstmt.log_min_duration = -1;
 437 #endif
 438
 439                 if (online_analyze_verbose)
 440                         startStamp = GetCurrentTimestamp();
 441
 442                 analyze_rel(relOid,
 443 #if PG_VERSION_NUM < 90500
 444                         &vacstmt
 445 #if PG_VERSION_NUM >= 90018
 446                         , true
 447 #endif
 448                         , GetAccessStrategy(BAS_VACUUM)
 449 #if (PG_VERSION_NUM >= 90000) && (PG_VERSION_NUM < 90004)
 450                         , true
 451 #endif
 452 #else
 453                         makeRangeVarFromOid(relOid),
 454                         VACOPT_ANALYZE | ((online_analyze_verbose) ? VACOPT_VERBOSE : 0),
 455                         &vacstmt, NULL, true, GetAccessStrategy(BAS_VACUUM)
 456 #endif
 457                 );
 458
 459                 if (online_analyze_verbose)
 460                 {
 461                         long    secs;
 462                         int             microsecs;
 463
 464                         endStamp = GetCurrentTimestamp();
 465                         TimestampDifference(startStamp, endStamp, &secs, &microsecs);
 466                         elog(INFO, "analyze \"%s\" took %.02f seconds",
 467                                 get_rel_name(relOid),
 468                                 ((double)secs) + ((double)microsecs)/1.0e6);
 469                 }
 470
 471
 472                 if (tabentry == NULL)
 473                 {
 474                         /* new table */
 475                         pgstat_clear_snapshot();
 476                 }
 477                 else
 478                 {
 479                         /* update last analyze timestamp in local memory of backend */
 480                         tabentry->analyze_timestamp = now;
 481                 }
 482         }
 483 #if PG_VERSION_NUM >= 90000
 484         else if (tabentry != NULL)
 485         {
 486                 tabentry->changes_since_analyze += naffected;
 487         }
 488 #endif
 489 }
 490
 491 extern PGDLLIMPORT void onlineAnalyzeHooker(QueryDesc *queryDesc);
 492 void
 493 onlineAnalyzeHooker(QueryDesc *queryDesc)
 494 {
 495         uint32  naffected = -1;
 496
 497         if (queryDesc->estate)
 498                 naffected = queryDesc->estate->es_processed;
 499
 500         if (online_analyze_enable && queryDesc->plannedstmt &&
 501                         (queryDesc->operation == CMD_INSERT ||
 502                          queryDesc->operation == CMD_UPDATE ||
 503                          queryDesc->operation == CMD_DELETE
 504 #if PG_VERSION_NUM < 90200
 505                          || (queryDesc->operation == CMD_SELECT &&
 506                                  queryDesc->plannedstmt->intoClause)
 507 #endif
 508                          ))
 509         {
 510 #if PG_VERSION_NUM < 90200
 511                 if (queryDesc->operation == CMD_SELECT)
 512                 {
 513                         Oid     relOid = RangeVarGetRelid(queryDesc->plannedstmt->intoClause->rel, true);
 514
 515                         makeAnalyze(relOid, queryDesc->operation, naffected);
 516                 }
 517                 else
 518 #endif
 519                 if (queryDesc->plannedstmt->resultRelations &&
 520                                  queryDesc->plannedstmt->rtable)
 521                 {
 522                         ListCell        *l;
 523
 524                         foreach(l, queryDesc->plannedstmt->resultRelations)
 525                         {
 526                                 int                             n = lfirst_int(l);
 527                                 RangeTblEntry   *rte = list_nth(queryDesc->plannedstmt->rtable, n-1);
 528
 529                                 if (rte->rtekind == RTE_RELATION)
 530                                         makeAnalyze(rte->relid, queryDesc->operation, naffected);
 531                         }
 532                 }
 533         }
 534
 535         if (oldExecutorEndHook)
 536                 oldExecutorEndHook(queryDesc);
 537         else
 538                 standard_ExecutorEnd(queryDesc);
 539 }
 540
 541 #if PG_VERSION_NUM >= 90200
 542 static void
 543 onlineAnalyzeHookerUtility(Node *parsetree, const char *queryString,
 544 #if PG_VERSION_NUM >= 90300
 545                                                         ProcessUtilityContext context, ParamListInfo params,
 546 #else
 547                                                         ParamListInfo params, bool isTopLevel,
 548 #endif
 549                                                         DestReceiver *dest, char *completionTag) {
 550         RangeVar        *tblname = NULL;
 551
 552         if (IsA(parsetree, CreateTableAsStmt) && ((CreateTableAsStmt*)parsetree)->into)
 553                 tblname = (RangeVar*)copyObject(((CreateTableAsStmt*)parsetree)->into->rel);
 554
 555         if (oldProcessUtilityHook)
 556                 oldProcessUtilityHook(parsetree, queryString,
 557 #if PG_VERSION_NUM >= 90300
 558                                                           context, params,
 559 #else
 560                                                           params, isTopLevel,
 561 #endif
 562                                                           dest, completionTag);
 563         else
 564                 standard_ProcessUtility(parsetree, queryString,
 565 #if PG_VERSION_NUM >= 90300
 566                                                                 context, params,
 567 #else
 568                                                                 params, isTopLevel,
 569 #endif
 570                                                                 dest, completionTag);
 571
 572         if (tblname) {
 573                 Oid     tblOid = RangeVarGetRelid(tblname, NoLock, true);
 574
 575                 makeAnalyze(tblOid, CMD_INSERT, -1);
 576         }
 577 }
 578 #endif
 579
 580 void _PG_init(void);
 581 void
 582 _PG_init(void)
 583 {
 584         oldExecutorEndHook = ExecutorEnd_hook;
 585
 586         ExecutorEnd_hook = onlineAnalyzeHooker;
 587
 588 #if PG_VERSION_NUM >= 90200
 589         oldProcessUtilityHook = ProcessUtility_hook;
 590
 591         ProcessUtility_hook = onlineAnalyzeHookerUtility;
 592 #endif
 593
 594
 595         DefineCustomBoolVariable(
 596                 "online_analyze.enable",
 597                 "Enable on-line analyze",
 598                 "Enables analyze of table directly after insert/update/delete/select into",
 599                 &online_analyze_enable,
 600 #if PG_VERSION_NUM >= 80400
 601                 online_analyze_enable,
 602 #endif
 603                 PGC_USERSET,
 604 #if PG_VERSION_NUM >= 80400
 605                 GUC_NOT_IN_SAMPLE,
 606 #if PG_VERSION_NUM >= 90100
 607                 NULL,
 608 #endif
 609 #endif
 610                 NULL,
 611                 NULL
 612         );
 613
 614         DefineCustomBoolVariable(
 615                 "online_analyze.verbose",
 616                 "Verbosity of on-line analyze",
 617                 "Make ANALYZE VERBOSE after table's changes",
 618                 &online_analyze_verbose,
 619 #if PG_VERSION_NUM >= 80400
 620                 online_analyze_verbose,
 621 #endif
 622                 PGC_USERSET,
 623 #if PG_VERSION_NUM >= 80400
 624                 GUC_NOT_IN_SAMPLE,
 625 #if PG_VERSION_NUM >= 90100
 626                 NULL,
 627 #endif
 628 #endif
 629                 NULL,
 630                 NULL
 631         );
 632
 633         DefineCustomRealVariable(
 634                 "online_analyze.scale_factor",
 635                 "fraction of table size to start on-line analyze",
 636                 "fraction of table size to start on-line analyze",
 637                 &online_analyze_scale_factor,
 638 #if PG_VERSION_NUM >= 80400
 639                 online_analyze_scale_factor,
 640 #endif
 641                 0.0,
 642                 1.0,
 643                 PGC_USERSET,
 644 #if PG_VERSION_NUM >= 80400
 645                 GUC_NOT_IN_SAMPLE,
 646 #if PG_VERSION_NUM >= 90100
 647                 NULL,
 648 #endif
 649 #endif
 650                 NULL,
 651                 NULL
 652         );
 653
 654         DefineCustomIntVariable(
 655                 "online_analyze.threshold",
 656                 "min number of row updates before on-line analyze",
 657                 "min number of row updates before on-line analyze",
 658                 &online_analyze_threshold,
 659 #if PG_VERSION_NUM >= 80400
 660                 online_analyze_threshold,
 661 #endif
 662                 0,
 663                 0x7fffffff,
 664                 PGC_USERSET,
 665 #if PG_VERSION_NUM >= 80400
 666                 GUC_NOT_IN_SAMPLE,
 667 #if PG_VERSION_NUM >= 90100
 668                 NULL,
 669 #endif
 670 #endif
 671                 NULL,
 672                 NULL
 673         );
 674
 675         DefineCustomRealVariable(
 676                 "online_analyze.min_interval",
 677                 "minimum time interval between analyze call (in milliseconds)",
 678                 "minimum time interval between analyze call (in milliseconds)",
 679                 &online_analyze_min_interval,
 680 #if PG_VERSION_NUM >= 80400
 681                 online_analyze_min_interval,
 682 #endif
 683                 0.0,
 684                 1e30,
 685                 PGC_USERSET,
 686 #if PG_VERSION_NUM >= 80400
 687                 GUC_NOT_IN_SAMPLE,
 688 #if PG_VERSION_NUM >= 90100
 689                 NULL,
 690 #endif
 691 #endif
 692                 NULL,
 693                 NULL
 694         );
 695
 696         DefineCustomEnumVariable(
 697                 "online_analyze.table_type",
 698                 "Type(s) of table for online analyze: all(default), persistent, temporary, none",
 699                 NULL,
 700                 &online_analyze_table_type,
 701 #if PG_VERSION_NUM >= 80400
 702                 online_analyze_table_type,
 703 #endif
 704                 online_analyze_table_type_options,
 705                 PGC_USERSET,
 706 #if PG_VERSION_NUM >= 80400
 707                 GUC_NOT_IN_SAMPLE,
 708 #if PG_VERSION_NUM >= 90100
 709                 NULL,
 710 #endif
 711 #endif
 712                 NULL,
 713                 NULL
 714         );
 715
 716         DefineCustomStringVariable(
 717                 "online_analyze.exclude_tables",
 718                 "List of tables which will not online analyze",
 719                 NULL,
 720                 &excludeTables.tableStr,
 721 #if PG_VERSION_NUM >= 80400
 722                 "",
 723 #endif
 724                 PGC_USERSET,
 725                 0,
 726 #if PG_VERSION_NUM >= 90100
 727                 excludeTablesCheck,
 728                 excludeTablesAssign,
 729 #else
 730                 excludeTablesAssign,
 731 #endif
 732                 excludeTablesShow
 733         );
 734
 735         DefineCustomStringVariable(
 736                 "online_analyze.include_tables",
 737                 "List of tables which will online analyze",
 738                 NULL,
 739                 &includeTables.tableStr,
 740 #if PG_VERSION_NUM >= 80400
 741                 "",
 742 #endif
 743                 PGC_USERSET,
 744                 0,
 745 #if PG_VERSION_NUM >= 90100
 746                 includeTablesCheck,
 747                 includeTablesAssign,
 748 #else
 749                 includeTablesAssign,
 750 #endif
 751                 includeTablesShow
 752         );
 753 }
 754
 755 void _PG_fini(void);
 756 void
 757 _PG_fini(void)
 758 {
 759         ExecutorEnd_hook = oldExecutorEndHook;
 760 #if PG_VERSION_NUM >= 90200
 761         ProcessUtility_hook = oldProcessUtilityHook;
 762 #endif
 763
 764         if (excludeTables.tables)
 765                 free(excludeTables.tables);
 766         if (includeTables.tables)
 767                 free(includeTables.tables);
 768
 769         excludeTables.tables = includeTables.tables = NULL;
 770         excludeTables.nTables = includeTables.nTables = 0;
 771 }