/ Check-in [69d749d9]
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Overview
Comment:Make sure the in-journal boolean vector is cleared and released when ending a transaction. This fixes an obscure problem with the previous check-in.
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SHA1:69d749d93d6565b848ce5c07f2738d144c6564bf
User & Date: drh 2010-03-19 16:52:54
Context
2010-03-19
16:55
Store the SQLite version number of the last writer in bytes 96..99 of the header. check-in: 146d4f5d user: drh tags: trunk
16:52
Make sure the in-journal boolean vector is cleared and released when ending a transaction. This fixes an obscure problem with the previous check-in. check-in: 69d749d9 user: drh tags: trunk
15:48
Do not create, open, or initialize the rollback journal until something actually needs to be written into the journal. That way, expensive filesystem operations are avoided if the transaction ends up being a no-op. check-in: b78e58ae user: drh tags: trunk
Changes
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Changes to src/pager.c.

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        rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0);
      }
    }

#ifdef SQLITE_CHECK_PAGES
    sqlite3PcacheIterateDirty(pPager->pPCache, pager_set_pagehash);
#endif

    sqlite3BitvecDestroy(pPager->pInJournal);
    pPager->pInJournal = 0;
    pPager->nRec = 0;
  }
  sqlite3PcacheCleanAll(pPager->pPCache);

  if( !pPager->exclusiveMode ){
    rc2 = osUnlock(pPager->fd, SHARED_LOCK);
    pPager->state = PAGER_SHARED;
    pPager->changeCountDone = 0;
  }else if( pPager->state==PAGER_SYNCED ){







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        rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0);
      }
    }

#ifdef SQLITE_CHECK_PAGES
    sqlite3PcacheIterateDirty(pPager->pPCache, pager_set_pagehash);
#endif
  }
  sqlite3BitvecDestroy(pPager->pInJournal);
  pPager->pInJournal = 0;
  pPager->nRec = 0;

  sqlite3PcacheCleanAll(pPager->pPCache);

  if( !pPager->exclusiveMode ){
    rc2 = osUnlock(pPager->fd, SHARED_LOCK);
    pPager->state = PAGER_SHARED;
    pPager->changeCountDone = 0;
  }else if( pPager->state==PAGER_SYNCED ){