SQLite

Check-in [f9adf66ad5]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Record the pcache allocation size statistics even for pcache overflow allocations. Adjust the wording on one of the stat output lines in the shell.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: f9adf66ad575abbb63736caef27bd3c619e516a6
User & Date: drh 2010-07-28 17:01:24.000
Context
2010-07-28
17:16
Adjust the shell test script "shell4.test" to account for changes in the ".stat on" display format from the previous checkin. (check-in: 2f2fa7dd80 user: drh tags: trunk)
17:01
Record the pcache allocation size statistics even for pcache overflow allocations. Adjust the wording on one of the stat output lines in the shell. (check-in: f9adf66ad5 user: drh tags: trunk)
16:05
Modify CLI to optionally display "stats". (check-in: 419ce0ed89 user: shaneh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/pcache1.c.
︙︙
148
149
150
151
152
153
154

155
156
157
158
159
160
161
162
163
164
165
166

** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no 
** such buffer exists or there is no space left in it, this function falls 
** back to sqlite3Malloc().
*/
static void *pcache1Alloc(int nByte){
  void *p;
  assert( sqlite3_mutex_held(pcache1.mutex) );

  if( nByte<=pcache1.szSlot && pcache1.pFree ){
    assert( pcache1.isInit );
    p = (PgHdr1 *)pcache1.pFree;
    pcache1.pFree = pcache1.pFree->pNext;
    sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
    sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
  }else{

    /* Allocate a new buffer using sqlite3Malloc. Before doing so, exit the
    ** global pcache mutex and unlock the pager-cache object pCache. This is 
    ** so that if the attempt to allocate a new buffer causes the the 
    ** configured soft-heap-limit to be breached, it will be possible to








>




<








148
149
150
151
152
153
154
155
156
157
158
159

160
161
162
163
164
165
166

** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no 
** such buffer exists or there is no space left in it, this function falls 
** back to sqlite3Malloc().
*/
static void *pcache1Alloc(int nByte){
  void *p;
  assert( sqlite3_mutex_held(pcache1.mutex) );
  sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
  if( nByte<=pcache1.szSlot && pcache1.pFree ){
    assert( pcache1.isInit );
    p = (PgHdr1 *)pcache1.pFree;
    pcache1.pFree = pcache1.pFree->pNext;

    sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
  }else{

    /* Allocate a new buffer using sqlite3Malloc. Before doing so, exit the
    ** global pcache mutex and unlock the pager-cache object pCache. This is 
    ** so that if the attempt to allocate a new buffer causes the the 
    ** configured soft-heap-limit to be breached, it will be possible to
︙︙
Changes to src/shell.c.
︙︙
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987

  int iCur;
  int iHiwtr;

  if( pArg && pArg->out ){
    
    iHiwtr = iCur = -1;
    sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, bReset);
    fprintf(pArg->out, "Mem Used (Excludes Scratch/Pcache):  %d (max %d) bytes\n", iCur, iHiwtr);
    iHiwtr = iCur = -1;
    sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset);
    fprintf(pArg->out, "Number of Allocations:               %d (max %d)\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
**    iHiwtr = iCur = -1;
**    sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset);








|








973
974
975
976
977
978
979
980
981
982
983
984
985
986
987

  int iCur;
  int iHiwtr;

  if( pArg && pArg->out ){
    
    iHiwtr = iCur = -1;
    sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, bReset);
    fprintf(pArg->out, "Memory Used:                         %d (max %d) bytes\n", iCur, iHiwtr);
    iHiwtr = iCur = -1;
    sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset);
    fprintf(pArg->out, "Number of Allocations:               %d (max %d)\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
**    iHiwtr = iCur = -1;
**    sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset);
︙︙