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Overview
| Comment: | Change an assert() added by the previous commit into a testcase(). Fix a separate assert() in btree.c:freeSpace(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | btree-speedup |
| Files: | files | file ages | folders |
| SHA1: |
fe51d3aa0ce7021213293a0647e31164 |
| User & Date: | drh 2014-08-20 13:17:43 |
Context
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2014-08-20
| ||
| 13:35 | Size reduction and performance improvements in btree.c and the allocateSpace() routine. Also fix an assert() in freeSpace(). check-in: 121308fa user: drh tags: trunk | |
| 13:17 | Change an assert() added by the previous commit into a testcase(). Fix a separate assert() in btree.c:freeSpace(). Closed-Leaf check-in: fe51d3aa user: drh tags: btree-speedup | |
| 11:56 | Further size reduction and performance improvement in btree.c:allocateSpace(). check-in: 1cb1cd64 user: drh tags: btree-speedup | |
Changes
Changes to src/btree.c.
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/* The request could not be fulfilled using a freelist slot. Check
** to see if defragmentation is necessary.
*/
testcase( gap+2+nByte==top );
if( gap+2+nByte>top ){
defragment_page:
assert( pPage->nCell>0 );
rc = defragmentPage(pPage);
if( rc ) return rc;
top = get2byteNotZero(&data[hdr+5]);
assert( gap+nByte<=top );
}
................................................................................
unsigned char *data = pPage->aData;
assert( pPage->pBt!=0 );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( start>=pPage->hdrOffset+6+pPage->childPtrSize );
assert( (start + size) <= (int)pPage->pBt->usableSize );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( size>=0 ); /* Minimum cell size is 4 */
if( pPage->pBt->btsFlags & BTS_SECURE_DELETE ){
/* Overwrite deleted information with zeros when the secure_delete
** option is enabled */
memset(&data[start], 0, size);
}
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/* The request could not be fulfilled using a freelist slot. Check
** to see if defragmentation is necessary.
*/
testcase( gap+2+nByte==top );
if( gap+2+nByte>top ){
defragment_page:
testcase( pPage->nCell==0 );
rc = defragmentPage(pPage);
if( rc ) return rc;
top = get2byteNotZero(&data[hdr+5]);
assert( gap+nByte<=top );
}
................................................................................
unsigned char *data = pPage->aData;
assert( pPage->pBt!=0 );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( start>=pPage->hdrOffset+6+pPage->childPtrSize );
assert( (start + size) <= (int)pPage->pBt->usableSize );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( size>=4 ); /* Minimum cell size is 4 */
if( pPage->pBt->btsFlags & BTS_SECURE_DELETE ){
/* Overwrite deleted information with zeros when the secure_delete
** option is enabled */
memset(&data[start], 0, size);
}
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