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Overview
| Comment: | If the journal file is open when unlocking the database, close it just before unlocking the database file instead of just after. This may fix #3572. (CVS 6171) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
36fe9a7a51b5279f1a3964139aa636e8 |
| User & Date: | danielk1977 2009-01-13 16:03:44 |
Context
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2009-01-13
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| 20:14 | Updates to comments as suggested by tickets #3578 and #3579. (CVS 6172) (check-in: b5927213 user: drh tags: trunk) | |
| 16:03 | If the journal file is open when unlocking the database, close it just before unlocking the database file instead of just after. This may fix #3572. (CVS 6171) (check-in: 36fe9a7a user: danielk1977 tags: trunk) | |
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2009-01-12
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| 15:46 | Version 3.6.8 (CVS 6170) (check-in: 8ca0b7c1 user: drh tags: trunk, release) | |
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 1.548 2009/01/11 17:00:02 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" /* ** Macros for troubleshooting. Normally turned off */ ................................................................................ ** the cache and reset the Pager structure internal state. If there is ** an open journal-file, then the next time a shared-lock is obtained ** on the pager file (by this or any other process), it will be ** treated as a hot-journal and rolled back. */ static void pager_unlock(Pager *pPager){ if( !pPager->exclusiveMode ){ int rc = osUnlock(pPager->fd, NO_LOCK); if( rc ) pPager->errCode = rc; pPager->dbSizeValid = 0; IOTRACE(("UNLOCK %p\n", pPager)) /* Always close the journal file when dropping the database lock. ** Otherwise, another connection with journal_mode=delete might ** delete the file out from under us. */ if( pPager->journalOpen ){ sqlite3OsClose(pPager->jfd); pPager->journalOpen = 0; sqlite3BitvecDestroy(pPager->pInJournal); pPager->pInJournal = 0; sqlite3BitvecDestroy(pPager->pAlwaysRollback); pPager->pAlwaysRollback = 0; } /* If Pager.errCode is set, the contents of the pager cache cannot be ** trusted. Now that the pager file is unlocked, the contents of the ** cache can be discarded and the error code safely cleared. */ if( pPager->errCode ){ if( rc==SQLITE_OK ) pPager->errCode = SQLITE_OK; |
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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 1.549 2009/01/13 16:03:44 danielk1977 Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" /* ** Macros for troubleshooting. Normally turned off */ ................................................................................ ** the cache and reset the Pager structure internal state. If there is ** an open journal-file, then the next time a shared-lock is obtained ** on the pager file (by this or any other process), it will be ** treated as a hot-journal and rolled back. */ static void pager_unlock(Pager *pPager){ if( !pPager->exclusiveMode ){ int rc; /* Always close the journal file when dropping the database lock. ** Otherwise, another connection with journal_mode=delete might ** delete the file out from under us. */ if( pPager->journalOpen ){ sqlite3OsClose(pPager->jfd); pPager->journalOpen = 0; sqlite3BitvecDestroy(pPager->pInJournal); pPager->pInJournal = 0; sqlite3BitvecDestroy(pPager->pAlwaysRollback); pPager->pAlwaysRollback = 0; } rc = osUnlock(pPager->fd, NO_LOCK); if( rc ) pPager->errCode = rc; pPager->dbSizeValid = 0; IOTRACE(("UNLOCK %p\n", pPager)) /* If Pager.errCode is set, the contents of the pager cache cannot be ** trusted. Now that the pager file is unlocked, the contents of the ** cache can be discarded and the error code safely cleared. */ if( pPager->errCode ){ if( rc==SQLITE_OK ) pPager->errCode = SQLITE_OK; |