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Overview
| Comment: | Fix a problem with building large indexes introduced by the previous commit. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | experimental |
| Files: | files | file ages | folders |
| SHA1: | 038ec9ea92f7661358580d999adc400d |
| User & Date: | dan 2011-08-06 15:09:33 |
Context
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2011-08-08
| ||
| 16:44 | Add fault-injection and other tests (and fixes) to improve coverage of vdbesort.c. check-in: 0e6defa6 user: dan tags: experimental | |
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2011-08-06
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| 15:09 | Fix a problem with building large indexes introduced by the previous commit. check-in: 038ec9ea user: dan tags: experimental | |
| 12:01 | In temp files used for merge sorting, store the size of each packed-memory-array at the start of the array itself. This is to avoid having to store the offsets of all arrays in the (potentially very large) file in main-memory. check-in: 8051c176 user: dan tags: experimental | |
Changes
Changes to src/vdbesort.c.
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nByte = N * (sizeof(int) + sizeof(VdbeSorterIter));
pSorter->aIter = (VdbeSorterIter *)sqlite3DbMallocZero(db, nByte);
if( !pSorter->aIter ) return SQLITE_NOMEM;
pSorter->aTree = (int *)&pSorter->aIter[N];
pSorter->nTree = N;
do {
int iNew = 0; /* Index of new, merged, PMA */
for(iNew=0; rc==SQLITE_OK; iNew++){
i64 nWrite; /* Number of bytes in new PMA */
/* If there are SORTER_MAX_MERGE_COUNT or less PMAs in file pTemp1,
** initialize an iterator for each of them and break out of the loop.
** These iterators will be incrementally merged as the VDBE layer calls
** sqlite3VdbeSorterNext().
**
|
| | > > > |
549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 |
nByte = N * (sizeof(int) + sizeof(VdbeSorterIter));
pSorter->aIter = (VdbeSorterIter *)sqlite3DbMallocZero(db, nByte);
if( !pSorter->aIter ) return SQLITE_NOMEM;
pSorter->aTree = (int *)&pSorter->aIter[N];
pSorter->nTree = N;
do {
int iNew; /* Index of new, merged, PMA */
for(iNew=0;
rc==SQLITE_OK && iNew*SORTER_MAX_MERGE_COUNT<pSorter->nPMA;
iNew++
){
i64 nWrite; /* Number of bytes in new PMA */
/* If there are SORTER_MAX_MERGE_COUNT or less PMAs in file pTemp1,
** initialize an iterator for each of them and break out of the loop.
** These iterators will be incrementally merged as the VDBE layer calls
** sqlite3VdbeSorterNext().
**
|