pPager->errCode = rc;
    pPager->eState = PAGER_ERROR;
  }
  return rc;
}

static int pager_truncate(Pager *pPager, Pgno nPage);




















/*
** This routine ends a transaction. A transaction is usually ended by 
** either a COMMIT or a ROLLBACK operation. This routine may be called 
** after rollback of a hot-journal, or if an error occurs while opening
** the journal file or writing the very first journal-header of a
** database transaction.
................................................................................
    }
  }
#endif

  sqlite3BitvecDestroy(pPager->pInJournal);
  pPager->pInJournal = 0;
  pPager->nRec = 0;
  if( isOpen(pPager->fd) || MEMDB ){
    sqlite3PcacheCleanAll(pPager->pPCache);
  }else{
    sqlite3PcacheClearWritable(pPager->pPCache);
  }
  sqlite3PcacheTruncate(pPager->pPCache, pPager->dbSize);

  if( pagerUseWal(pPager) ){

    pPager->errCode = rc;
    pPager->eState = PAGER_ERROR;
  }
  return rc;
}

static int pager_truncate(Pager *pPager, Pgno nPage);

/*
** The write transaction open on the pager passed as the only argument is
** being committed. This function returns true if all dirty pages should
** be flushed to disk, or false otherwise. Pages should be flushed to disk
** unless one of the following is true:
**
**   * The db is an in-memory database.
**
**   * The db is a temporary database and the db file has not been opened.
**
**   * The db is a temporary database and the cache contains less than
**     C/4 dirty pages, where C is the configured cache-size.
*/
static int pagerFlushOnCommit(Pager *pPager){
  if( pPager->tempFile==0 ) return 1;
  if( !isOpen(pPager->fd) ) return 0;
  return (sqlite3PCachePercentDirty(pPager->pPCache)>=25);
}

/*
** This routine ends a transaction. A transaction is usually ended by 
** either a COMMIT or a ROLLBACK operation. This routine may be called 
** after rollback of a hot-journal, or if an error occurs while opening
** the journal file or writing the very first journal-header of a
** database transaction.
................................................................................
    }
  }
#endif

  sqlite3BitvecDestroy(pPager->pInJournal);
  pPager->pInJournal = 0;
  pPager->nRec = 0;
  if( pagerFlushOnCommit(pPager) ){
    sqlite3PcacheCleanAll(pPager->pPCache);
  }else{
    sqlite3PcacheClearWritable(pPager->pPCache);
  }
  sqlite3PcacheTruncate(pPager->pPCache, pPager->dbSize);

  if( pagerUseWal(pPager) ){

/*
** Return the size of the header added by this middleware layer
** in the page-cache hierarchy.
*/
int sqlite3HeaderSizePcache(void){ return ROUND8(sizeof(PgHdr)); }













#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG)
/*
** For all dirty pages currently in the cache, invoke the specified
** callback. This is only used if the SQLITE_CHECK_PAGES macro is
** defined.
*/

/*
** Return the size of the header added by this middleware layer
** in the page-cache hierarchy.
*/
int sqlite3HeaderSizePcache(void){ return ROUND8(sizeof(PgHdr)); }

/*
** Return the number of dirty pages currently in the cache, as a percentage
** of the configured cache size.
*/
int sqlite3PCachePercentDirty(PCache *pCache){
  PgHdr *pDirty;
  int nDirty = 0;
  int nCache = numberOfCachePages(pCache);
  for(pDirty=pCache->pDirty; pDirty; pDirty=pDirty->pDirtyNext) nDirty++;
  return (int)(((i64)nDirty * 100) / nCache);
}

#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG)
/*
** For all dirty pages currently in the cache, invoke the specified
** callback. This is only used if the SQLITE_CHECK_PAGES macro is
** defined.
*/

#endif

void sqlite3PCacheSetDefault(void);

/* Return the header size */
int sqlite3HeaderSizePcache(void);
int sqlite3HeaderSizePcache1(void);




#endif /* _PCACHE_H_ */

#endif

void sqlite3PCacheSetDefault(void);

/* Return the header size */
int sqlite3HeaderSizePcache(void);
int sqlite3HeaderSizePcache1(void);

/* Number of dirty pages as a percentage of the configured cache size */
int sqlite3PCachePercentDirty(PCache*);

#endif /* _PCACHE_H_ */