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stats.c
资源名称：postgresql-6.5.2.tar.gz　[点击查看]
上传用户：blenddy
上传日期：2007-01-07
资源大小：6495k
文件大小：9k
源码类别：

数据库系统

开发平台：

Unix_Linux

stats.c：源码内容
  1. /*-------------------------------------------------------------------------
  2.  *
  3.  * stats.c
  4.  *   heap access method debugging statistic collection routines
  5.  *
  6.  * Copyright (c) 1994, Regents of the University of California
  7.  *
  8.  *
  9.  * IDENTIFICATION
  10.  *   $Header: /usr/local/cvsroot/pgsql/src/backend/access/heap/stats.c,v 1.16.2.2 1999/08/02 05:56:37 scrappy Exp $
  11.  *
  12.  * NOTES
  13.  *   initam should be moved someplace else.
  14.  *
  15.  *-------------------------------------------------------------------------
  16.  */
  18. #include <time.h>
  20. #include "postgres.h"
  22. #include "access/heapam.h"
  25. static void InitHeapAccessStatistics(void);
  27. /* ----------------
  28.  * InitHeapAccessStatistics
  29.  * ----------------
  30.  */
  31. HeapAccessStatistics heap_access_stats = (HeapAccessStatistics) NULL;
  33. static void
  34. InitHeapAccessStatistics()
  35. {
  36. MemoryContext oldContext;
  37. HeapAccessStatistics stats;
  39. /* ----------------
  40.  * make sure we don't initialize things twice
  41.  * ----------------
  42.  */
  43. if (heap_access_stats != NULL)
  44. return;
  46. /* ----------------
  47.  * allocate statistics structure from the top memory context
  48.  * ----------------
  49.  */
  50. oldContext = MemoryContextSwitchTo(TopMemoryContext);
  52. stats = (HeapAccessStatistics)
  53. palloc(sizeof(HeapAccessStatisticsData));
  55. /* ----------------
  56.  * initialize fields to default values
  57.  * ----------------
  58.  */
  59. stats->global_open = 0;
  60. stats->global_openr = 0;
  61. stats->global_close = 0;
  62. stats->global_beginscan = 0;
  63. stats->global_rescan = 0;
  64. stats->global_endscan = 0;
  65. stats->global_getnext = 0;
  66. stats->global_fetch = 0;
  67. stats->global_insert = 0;
  68. stats->global_delete = 0;
  69. stats->global_replace = 0;
  70. stats->global_mark4update = 0;
  71. stats->global_markpos = 0;
  72. stats->global_restrpos = 0;
  73. stats->global_BufferGetRelation = 0;
  74. stats->global_RelationIdGetRelation = 0;
  75. stats->global_RelationIdGetRelation_Buf = 0;
  76. stats->global_getreldesc = 0;
  77. stats->global_heapgettup = 0;
  78. stats->global_RelationPutHeapTuple = 0;
  79. stats->global_RelationPutLongHeapTuple = 0;
  81. stats->local_open = 0;
  82. stats->local_openr = 0;
  83. stats->local_close = 0;
  84. stats->local_beginscan = 0;
  85. stats->local_rescan = 0;
  86. stats->local_endscan = 0;
  87. stats->local_getnext = 0;
  88. stats->local_fetch = 0;
  89. stats->local_insert = 0;
  90. stats->local_delete = 0;
  91. stats->local_replace = 0;
  92. stats->local_mark4update = 0;
  93. stats->local_markpos = 0;
  94. stats->local_restrpos = 0;
  95. stats->local_BufferGetRelation = 0;
  96. stats->local_RelationIdGetRelation = 0;
  97. stats->local_RelationIdGetRelation_Buf = 0;
  98. stats->local_getreldesc = 0;
  99. stats->local_heapgettup = 0;
  100. stats->local_RelationPutHeapTuple = 0;
  101. stats->local_RelationPutLongHeapTuple = 0;
  102. stats->local_RelationNameGetRelation = 0;
  103. stats->global_RelationNameGetRelation = 0;
  105. /* ----------------
  106.  * record init times
  107.  * ----------------
  108.  */
  109. time(&stats->init_global_timestamp);
  110. time(&stats->local_reset_timestamp);
  111. time(&stats->last_request_timestamp);
  113. /* ----------------
  114.  * return to old memory context
  115.  * ----------------
  116.  */
  117. MemoryContextSwitchTo(oldContext);
  119. heap_access_stats = stats;
  120. }
  122. #ifdef NOT_USED
  123. /* ----------------
  124.  * ResetHeapAccessStatistics
  125.  * ----------------
  126.  */
  127. void
  128. ResetHeapAccessStatistics()
  129. {
  130. HeapAccessStatistics stats;
  132. /* ----------------
  133.  * do nothing if stats aren't initialized
  134.  * ----------------
  135.  */
  136. if (heap_access_stats == NULL)
  137. return;
  139. stats = heap_access_stats;
  141. /* ----------------
  142.  * reset local counts
  143.  * ----------------
  144.  */
  145. stats->local_open = 0;
  146. stats->local_openr = 0;
  147. stats->local_close = 0;
  148. stats->local_beginscan = 0;
  149. stats->local_rescan = 0;
  150. stats->local_endscan = 0;
  151. stats->local_getnext = 0;
  152. stats->local_fetch = 0;
  153. stats->local_insert = 0;
  154. stats->local_delete = 0;
  155. stats->local_replace = 0;
  156. stats->local_mark4update = 0;
  157. stats->local_markpos = 0;
  158. stats->local_restrpos = 0;
  159. stats->local_BufferGetRelation = 0;
  160. stats->local_RelationIdGetRelation = 0;
  161. stats->local_RelationIdGetRelation_Buf = 0;
  162. stats->local_getreldesc = 0;
  163. stats->local_heapgettup = 0;
  164. stats->local_RelationPutHeapTuple = 0;
  165. stats->local_RelationPutLongHeapTuple = 0;
  167. /* ----------------
  168.  * reset local timestamps
  169.  * ----------------
  170.  */
  171. time(&stats->local_reset_timestamp);
  172. time(&stats->last_request_timestamp);
  173. }
  175. #endif
  177. #ifdef NOT_USED
  178. /* ----------------
  179.  * GetHeapAccessStatistics
  180.  * ----------------
  181.  */
  182. HeapAccessStatistics
  183. GetHeapAccessStatistics()
  184. {
  185. HeapAccessStatistics stats;
  187. /* ----------------
  188.  * return nothing if stats aren't initialized
  189.  * ----------------
  190.  */
  191. if (heap_access_stats == NULL)
  192. return NULL;
  194. /* ----------------
  195.  * record the current request time
  196.  * ----------------
  197.  */
  198. time(&heap_access_stats->last_request_timestamp);
  200. /* ----------------
  201.  * allocate a copy of the stats and return it to the caller.
  202.  * ----------------
  203.  */
  204. stats = (HeapAccessStatistics)
  205. palloc(sizeof(HeapAccessStatisticsData));
  207. memmove(stats,
  208. heap_access_stats,
  209. sizeof(HeapAccessStatisticsData));
  211. return stats;
  212. }
  214. #endif
  216. #ifdef NOT_USED
  217. /* ----------------
  218.  * PrintHeapAccessStatistics
  219.  * ----------------
  220.  */
  221. void
  222. PrintHeapAccessStatistics(HeapAccessStatistics stats)
  223. {
  224. /* ----------------
  225.  * return nothing if stats aren't valid
  226.  * ----------------
  227.  */
  228. if (stats == NULL)
  229. return;
  231. printf("======== heap am statistics ========n");
  232. printf("init_global_timestamp:      %s",
  233.    ctime(&(stats->init_global_timestamp)));
  235. printf("local_reset_timestamp:      %s",
  236.    ctime(&(stats->local_reset_timestamp)));
  238. printf("last_request_timestamp:     %s",
  239.    ctime(&(stats->last_request_timestamp)));
  241. printf("local/global_open:                        %6d/%6dn",
  242.    stats->local_open, stats->global_open);
  244. printf("local/global_openr:                       %6d/%6dn",
  245.    stats->local_openr, stats->global_openr);
  247. printf("local/global_close:                       %6d/%6dn",
  248.    stats->local_close, stats->global_close);
  250. printf("local/global_beginscan:                   %6d/%6dn",
  251.    stats->local_beginscan, stats->global_beginscan);
  253. printf("local/global_rescan:                      %6d/%6dn",
  254.    stats->local_rescan, stats->global_rescan);
  256. printf("local/global_endscan:                     %6d/%6dn",
  257.    stats->local_endscan, stats->global_endscan);
  259. printf("local/global_getnext:                     %6d/%6dn",
  260.    stats->local_getnext, stats->global_getnext);
  262. printf("local/global_fetch:                       %6d/%6dn",
  263.    stats->local_fetch, stats->global_fetch);
  265. printf("local/global_insert:                      %6d/%6dn",
  266.    stats->local_insert, stats->global_insert);
  268. printf("local/global_delete:                      %6d/%6dn",
  269.    stats->local_delete, stats->global_delete);
  271. printf("local/global_replace:                     %6d/%6dn",
  272.    stats->local_replace, stats->global_replace);
  274. printf("local/global_mark4update:                     %6d/%6dn",
  275.    stats->local_mark4update, stats->global_mark4update);
  277. printf("local/global_markpos:                     %6d/%6dn",
  278.    stats->local_markpos, stats->global_markpos);
  280. printf("local/global_restrpos:                    %6d/%6dn",
  281.    stats->local_restrpos, stats->global_restrpos);
  283. printf("================n");
  285. printf("local/global_BufferGetRelation:             %6d/%6dn",
  286.    stats->local_BufferGetRelation,
  287.    stats->global_BufferGetRelation);
  289. printf("local/global_RelationIdGetRelation:         %6d/%6dn",
  290.    stats->local_RelationIdGetRelation,
  291.    stats->global_RelationIdGetRelation);
  293. printf("local/global_RelationIdGetRelation_Buf:     %6d/%6dn",
  294.    stats->local_RelationIdGetRelation_Buf,
  295.    stats->global_RelationIdGetRelation_Buf);
  297. printf("local/global_getreldesc:                    %6d/%6dn",
  298.    stats->local_getreldesc, stats->global_getreldesc);
  300. printf("local/global_heapgettup:                    %6d/%6dn",
  301.    stats->local_heapgettup, stats->global_heapgettup);
  303. printf("local/global_RelationPutHeapTuple:          %6d/%6dn",
  304.    stats->local_RelationPutHeapTuple,
  305.    stats->global_RelationPutHeapTuple);
  307. printf("local/global_RelationPutLongHeapTuple:      %6d/%6dn",
  308.    stats->local_RelationPutLongHeapTuple,
  309.    stats->global_RelationPutLongHeapTuple);
  311. printf("===================================n");
  313. printf("n");
  314. }
  316. #endif
  318. #ifdef NOT_USED
  319. /* ----------------
  320.  * PrintAndFreeHeapAccessStatistics
  321.  * ----------------
  322.  */
  323. void
  324. PrintAndFreeHeapAccessStatistics(HeapAccessStatistics stats)
  325. {
  326. PrintHeapAccessStatistics(stats);
  327. if (stats != NULL)
  328. pfree(stats);
  329. }
  331. #endif
  333. /* ----------------------------------------------------------------
  334.  * access method initialization
  335.  * ----------------------------------------------------------------
  336.  */
  337. /* ----------------
  338.  * initam should someday be moved someplace else.
  339.  * ----------------
  340.  */
  341. void
  342. initam(void)
  343. {
  344. /* ----------------
  345.  * initialize heap statistics.
  346.  * ----------------
  347.  */
  348. InitHeapAccessStatistics();
  349. }