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Overview
| Comment: | Add an assert() to verify that the dirty-page list in the pager is valid before using it. (CVS 4810) |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
942daf94ef1f8ac678988e175ef968a2 |
| User & Date: | drh 2008-02-26 14:46:05.000 |
Context
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2008-02-26
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| 16:16 | Add commentary to clarify what is happening when an I/O error occurs while writing dirty pages to the database file. (CVS 4811) (check-in: afe49d81f4 user: drh tags: trunk) | |
| 14:46 | Add an assert() to verify that the dirty-page list in the pager is valid before using it. (CVS 4810) (check-in: 942daf94ef user: drh tags: trunk) | |
| 06:05 | Have sqlite3PagerPagecount() return -1 when the pager is in error state. Fix for #2961. (CVS 4809) (check-in: 427e7f8b4a user: danielk1977 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 1.410 2008/02/26 14:46:05 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include <assert.h> #include <string.h> /* |
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/*
** Collect every dirty page into a dirty list and
** return a pointer to the head of that list. All pages are
** collected even if they are still in use.
*/
static PgHdr *pager_get_all_dirty_pages(Pager *pPager){
return pPager->pDirty;
}
/*
** Return TRUE if there is a hot journal on the given pager.
** A hot journal is one that needs to be played back.
**
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/*
** Collect every dirty page into a dirty list and
** return a pointer to the head of that list. All pages are
** collected even if they are still in use.
*/
static PgHdr *pager_get_all_dirty_pages(Pager *pPager){
#ifndef NDEBUG
/* Verify the sanity of the dirty list when we are running
** in debugging mode. This is expensive, so do not
** do this on a normal build. */
int n1 = 0;
int n2 = 0;
PgHdr *p;
for(p=pPager->pAll; p; p=p->pNextAll){ if( p->dirty ) n1++; }
for(p=pPager->pDirty; p; p=p->pDirty){ n2++; }
assert( n1==n2 );
#endif
return pPager->pDirty;
}
/*
** Return TRUE if there is a hot journal on the given pager.
** A hot journal is one that needs to be played back.
**
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