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Overview
Comment:Small performance boost and size decrease in sqlite3BtreeMovetoUnpacked().
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SHA1: e106a77d85c20ae23ebe49a5acceeaffecb40fc2
User & Date: drh 2016-06-06 01:54:20.047
Context
2016-06-06
13:24
Initialize the yyerrcnt variable in the lemon parser template. This has no effect on SQLite itself. (check-in: 45531654f7 user: drh tags: trunk)
01:54
Small performance boost and size decrease in sqlite3BtreeMovetoUnpacked(). (check-in: e106a77d85 user: drh tags: trunk)
01:48
Small performance improvement in the LIKE function. (check-in: 5fb0c35459 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/btree.c.
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  int rc;
  RecordCompare xRecordCompare;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( pRes );
  assert( (pIdxKey==0)==(pCur->pKeyInfo==0) );


  /* If the cursor is already positioned at the point we are trying
  ** to move to, then just return without doing any work */

  if( pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0
   && pCur->curIntKey 
  ){
    if( pCur->info.nKey==intKey ){
      *pRes = 0;
      return SQLITE_OK;
    }
    if( (pCur->curFlags & BTCF_AtLast)!=0 && pCur->info.nKey<intKey ){
      *pRes = -1;








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  int rc;
  RecordCompare xRecordCompare;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( pRes );
  assert( (pIdxKey==0)==(pCur->pKeyInfo==0) );
  assert( (pIdxKey==0)==(pCur->curIntKey!=0) || pCur->eState!=CURSOR_VALID );

  /* If the cursor is already positioned at the point we are trying
  ** to move to, then just return without doing any work */
  if( pIdxKey==0
   && pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0

  ){
    if( pCur->info.nKey==intKey ){
      *pRes = 0;
      return SQLITE_OK;
    }
    if( (pCur->curFlags & BTCF_AtLast)!=0 && pCur->info.nKey<intKey ){
      *pRes = -1;
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