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Overview
| Comment: | Make the pager sector size configurable at compile-time. (CVS 3517) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
6221cf4f52e79f53043b7c10daedf275 |
| User & Date: | drh 2006-11-23 11:58:44 |
Context
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2006-11-23
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| 11:59 | Fix a typo in the OMIT_AUTORIZATION in expr.c. (CVS 3518) check-in: 3dea7fbe user: drh tags: trunk | |
| 11:58 | Make the pager sector size configurable at compile-time. (CVS 3517) check-in: 6221cf4f user: drh tags: trunk | |
| 09:39 | Add performance tests to the test suite. (CVS 3516) check-in: 270c745d user: drh tags: trunk | |
Changes
Changes to src/pager.c.
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** 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 1.275 2006/11/06 21:20:26 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include "os.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ #else # define MEMDB pPager->memDb #endif /* ** The default size of a disk sector */ #define PAGER_SECTOR_SIZE 512 /* ** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is ** reserved for working around a windows/posix incompatibility). It is ** used in the journal to signify that the remainder of the journal file ** is devoted to storing a master journal name - there are no more pages to ** roll back. See comments for function writeMasterJournal() for details. |
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** 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 1.276 2006/11/23 11:58:44 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include "os.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ #else # define MEMDB pPager->memDb #endif /* ** The default size of a disk sector */ #ifndef PAGER_SECTOR_SIZE # define PAGER_SECTOR_SIZE 512 #endif /* ** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is ** reserved for working around a windows/posix incompatibility). It is ** used in the journal to signify that the remainder of the journal file ** is devoted to storing a master journal name - there are no more pages to ** roll back. See comments for function writeMasterJournal() for details. |