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Overview
| Comment: | The pager takes the sector size to be the larger of the sector size reported by sqlite3OsSectorSize() and the page size. (CVS 3890) |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
e5e6af55ccc5c1a8a9206b42f1dd7bf5 |
| User & Date: | drh 2007-05-01 16:59:49.000 |
Context
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2007-05-01
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| 17:14 | Modify loadSegmentLeavesInt() to correctly handle prefix searching. The new function docListUnion() is used to accumulate a union of the hits for the matching terms, which will be merged across segments using docListMerge(). (CVS 3891) (check-in: 72c7963073 user: shess tags: trunk) | |
| 16:59 | The pager takes the sector size to be the larger of the sector size reported by sqlite3OsSectorSize() and the page size. (CVS 3890) (check-in: e5e6af55cc user: drh tags: trunk) | |
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2007-04-30
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| 22:09 | Propagate prefix flag through implementation of doclist query code. Also implement correct prefix-handling for traversal of interior nodes of segment tree. A given prefix can span multiple children of an interior node, and from there the branches need to be followed in parallel. (CVS 3889) (check-in: cae844a01a user: shess tags: trunk) | |
Changes
Changes to src/pager.c.
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14 15 16 17 18 19 20 | ** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** | | | 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | ** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: pager.c,v 1.332 2007/05/01 16:59:49 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include "os.h" #include "pager.h" #include <assert.h> #include <string.h> |
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}
if( rc==SQLITE_OK ){
pPager->dbSize = nPage;
pager_truncate_cache(pPager);
}
return rc;
}
/*
** Playback the journal and thus restore the database file to
** the state it was in before we started making changes.
**
** The journal file format is as follows:
**
| > > > > > > > > > > > > > | 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 |
}
if( rc==SQLITE_OK ){
pPager->dbSize = nPage;
pager_truncate_cache(pPager);
}
return rc;
}
/*
** Set the sectorSize for the given pager.
**
** The sector size is the larger of the sector size reported
** by sqlite3OsSectorSize() and the pageSize.
*/
static void setSectorSize(Pager *pPager){
pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
if( pPager->sectorSize<pPager->pageSize ){
pPager->sectorSize = pPager->pageSize;
}
}
/*
** Playback the journal and thus restore the database file to
** the state it was in before we started making changes.
**
** The journal file format is as follows:
**
|
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sqliteFree(zMaster);
}
/* The Pager.sectorSize variable may have been updated while rolling
** back a journal created by a process with a different sector size
** value. Reset it to the correct value for this process.
*/
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sqliteFree(zMaster);
}
/* The Pager.sectorSize variable may have been updated while rolling
** back a journal created by a process with a different sector size
** value. Reset it to the correct value for this process.
*/
setSectorSize(pPager);
return rc;
}
/*
** Playback the statement journal.
**
** This is similar to playing back the transaction journal but with
|
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pPager->fullSync = (pPager->noSync?0:1);
/* pPager->pFirst = 0; */
/* pPager->pFirstSynced = 0; */
/* pPager->pLast = 0; */
pPager->nExtra = FORCE_ALIGNMENT(nExtra);
assert(fd||memDb);
if( !memDb ){
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pPager->fullSync = (pPager->noSync?0:1);
/* pPager->pFirst = 0; */
/* pPager->pFirstSynced = 0; */
/* pPager->pLast = 0; */
pPager->nExtra = FORCE_ALIGNMENT(nExtra);
assert(fd||memDb);
if( !memDb ){
setSectorSize(pPager);
}
/* pPager->pBusyHandler = 0; */
/* memset(pPager->aHash, 0, sizeof(pPager->aHash)); */
*ppPager = pPager;
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
pPager->pNext = pTsd->pPager;
pTsd->pPager = pPager;
|
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