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Overview
| Comment: | More tweaks to improve the performance of the insert logic, slightly. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
dec1307581216e01ad508ffe4455b957 |
| User & Date: | drh 2016-05-21 23:25:29.377 |
Context
|
2016-05-23
| ||
| 00:10 | Update the configure script with additional hints on the location of tclConfig.sh, hints needed by the latest versions of Xcode. (check-in: 90411a2816 user: drh tags: trunk) | |
|
2016-05-21
| ||
| 23:25 | More tweaks to improve the performance of the insert logic, slightly. (check-in: dec1307581 user: drh tags: trunk) | |
| 20:03 | Simplify the sqlite3BtreeInsert() interface by gathering the five arguments describing the content to be inserted into the new BtreePayload structure, and thus reducing the number of parameters from eight to four. (check-in: 55f348cdd2 user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
| ︙ | ︙ | |||
6092 6093 6094 6095 6096 6097 6098 |
/* pPage is not necessarily writeable since pCell might be auxiliary
** buffer space that is separate from the pPage buffer area */
assert( pCell<pPage->aData || pCell>=&pPage->aData[pBt->pageSize]
|| sqlite3PagerIswriteable(pPage->pDbPage) );
/* Fill in the header. */
nHeader = pPage->childPtrSize;
| > | > > | > < < < < < < < < > > > | 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 |
/* pPage is not necessarily writeable since pCell might be auxiliary
** buffer space that is separate from the pPage buffer area */
assert( pCell<pPage->aData || pCell>=&pPage->aData[pBt->pageSize]
|| sqlite3PagerIswriteable(pPage->pDbPage) );
/* Fill in the header. */
nHeader = pPage->childPtrSize;
if( pPage->intKey ){
nPayload = pX->nData + pX->nZero;
pSrc = pX->pData;
nSrc = pX->nData;
assert( pPage->intKeyLeaf ); /* fillInCell() only called for leaves */
nHeader += putVarint32(&pCell[nHeader], nPayload);
nHeader += putVarint(&pCell[nHeader], *(u64*)&pX->nKey);
}else{
assert( pX->nData==0 );
assert( pX->nZero==0 );
assert( pX->nKey<=0x7fffffff && pX->pKey!=0 );
nSrc = nPayload = (int)pX->nKey;
pSrc = pX->pKey;
nHeader += putVarint32(&pCell[nHeader], nPayload);
}
/* Fill in the payload */
if( nPayload<=pPage->maxLocal ){
n = nHeader + nPayload;
testcase( n==3 );
testcase( n==4 );
if( n<4 ) n = 4;
*pnSize = n;
spaceLeft = nPayload;
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| ︙ | ︙ |