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Overview
Comment: | Allow the rollback journal to be empty except for its header. Ticket #212. (CVS 809) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
1ba41bc2afab18cc295d9a45845296b4 |
User & Date: | drh 2003-01-03 02:04:27.000 |
Context
2003-01-04
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16:48 | Optimizations to the BTree module for a modest speed improvement. (CVS 810) (check-in: 39902a7041 user: drh tags: trunk) | |
2003-01-03
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02:04 | Allow the rollback journal to be empty except for its header. Ticket #212. (CVS 809) (check-in: 1ba41bc2af user: drh tags: trunk) | |
2003-01-02
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14:43 | Code optimizations to help the library run faster. (CVS 808) (check-in: db745e87dc user: drh 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 1.64 2003/01/03 02:04:27 drh Exp $ */ #include "os.h" /* Must be first to enable large file support */ #include "sqliteInt.h" #include "pager.h" #include <assert.h> #include <string.h> |
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440 441 442 443 444 445 446 | */ assert( pPager->journalOpen ); sqliteOsSeek(&pPager->jfd, 0); rc = sqliteOsFileSize(&pPager->jfd, &nRec); if( rc!=SQLITE_OK ){ goto end_playback; } | | | 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 | */ assert( pPager->journalOpen ); sqliteOsSeek(&pPager->jfd, 0); rc = sqliteOsFileSize(&pPager->jfd, &nRec); if( rc!=SQLITE_OK ){ goto end_playback; } if( nRec < sizeof(aMagic)+sizeof(Pgno) ){ goto end_playback; } nRec = (nRec - (sizeof(aMagic)+sizeof(Pgno))) / sizeof(PageRecord); /* Read the beginning of the journal and truncate the ** database file back to its original size. */ |
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