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Overview
| Comment: | Add assert() statements to verify that u16 pointers associated with the enhancement in [897f56a158] are always 2-byte aligned. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 98ccfa930e8e5f10808a518e3e22e85e |
| User & Date: | drh 2011-06-06 13:38:11 |
Context
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2011-06-07
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| 18:31 | Fix a comment type on the description of the Schema object. check-in: 095cd9a6 user: drh tags: trunk | |
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2011-06-06
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| 18:14 | Merge the latest trunk changes into the fts3-prefix-search branch. check-in: 567dd843 user: drh tags: fts3-prefix-search | |
| 13:38 | Add assert() statements to verify that u16 pointers associated with the enhancement in [897f56a158] are always 2-byte aligned. check-in: 98ccfa93 user: drh tags: trunk | |
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2011-06-04
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| 01:43 | Performance improvement to the btree search routine. check-in: 65db822f user: drh tags: trunk | |
Changes
Changes to src/btree.c.
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}
rc = freeSpace(pPage, pc, sz);
if( rc ){
*pRC = rc;
return;
}
endPtr = &data[pPage->cellOffset + 2*pPage->nCell - 2];
while( ptr<endPtr ){
*(u16*)ptr = *(u16*)&ptr[2];
ptr += 2;
}
pPage->nCell--;
put2byte(&data[hdr+3], pPage->nCell);
pPage->nFree += 2;
................................................................................
pPage->nFree -= (u16)(2 + sz);
memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip);
if( iChild ){
put4byte(&data[idx], iChild);
}
ptr = &data[end];
endPtr = &data[ins];
while( ptr>endPtr ){
*(u16*)ptr = *(u16*)&ptr[-2];
ptr -= 2;
}
put2byte(&data[ins], idx);
put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
#ifndef SQLITE_OMIT_AUTOVACUUM
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}
rc = freeSpace(pPage, pc, sz);
if( rc ){
*pRC = rc;
return;
}
endPtr = &data[pPage->cellOffset + 2*pPage->nCell - 2];
assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
while( ptr<endPtr ){
*(u16*)ptr = *(u16*)&ptr[2];
ptr += 2;
}
pPage->nCell--;
put2byte(&data[hdr+3], pPage->nCell);
pPage->nFree += 2;
................................................................................
pPage->nFree -= (u16)(2 + sz);
memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip);
if( iChild ){
put4byte(&data[idx], iChild);
}
ptr = &data[end];
endPtr = &data[ins];
assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
while( ptr>endPtr ){
*(u16*)ptr = *(u16*)&ptr[-2];
ptr -= 2;
}
put2byte(&data[ins], idx);
put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
#ifndef SQLITE_OMIT_AUTOVACUUM
|