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Overview
| Comment: | Another micro-optimization in accessPayload(). Slightly smaller and faster. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c012619b65d70b4ef6cf33532ef57d7f |
| User & Date: | drh 2017-01-27 01:25:00 |
Context
|
2017-01-27
| ||
| 01:52 | In the command-line shell, enhance the ".mode" command so that it restores the default column and row separators for modes "line", "list", "column", and "tcl". (check-in: 58f02e6e user: drh tags: trunk) | |
| 01:25 | Another micro-optimization in accessPayload(). Slightly smaller and faster. (check-in: c012619b user: drh tags: trunk) | |
| 01:13 | Performance optimization in accessPayload(). (check-in: ebb1fd98 user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
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nextPage = get4byte(aPayload);
rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
sqlite3PagerUnref(pDbPage);
offset = 0;
}
}
amt -= a;
pBuf += a;
}
if( amt==0 ) break;
if( rc ) break;
iIdx++;
}
}
if( rc==SQLITE_OK && amt>0 ){
return SQLITE_CORRUPT_BKPT;
}
return rc;
}
/*
** Read part of the payload for the row at which that cursor pCur is currently
** pointing. "amt" bytes will be transferred into pBuf[]. The transfer
|
> < | |
4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 |
nextPage = get4byte(aPayload);
rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
sqlite3PagerUnref(pDbPage);
offset = 0;
}
}
amt -= a;
if( amt==0 ) return rc;
pBuf += a;
}
if( rc ) break;
iIdx++;
}
}
if( rc==SQLITE_OK && amt>0 ){
return SQLITE_CORRUPT_BKPT; /* Overflow chain ends prematurely */
}
return rc;
}
/*
** Read part of the payload for the row at which that cursor pCur is currently
** pointing. "amt" bytes will be transferred into pBuf[]. The transfer
|