SQLite

/*
** 2004 April 6
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** $Id: btree.c,v 1.493 2008/08/01 20:10:08 drh Exp $
** $Id: btree.c,v 1.494 2008/08/02 17:03:32 danielk1977 Exp $
**
** This file implements a external (disk-based) database using BTrees.
** See the header comment on "btreeInt.h" for additional information.
** Including a description of file format and an overview of operation.
*/
#include "btreeInt.h"

      nSrc = nData;
      pSrc = pData;
    }
  }
  releasePage(pToRelease);
  return SQLITE_OK;
}


/*
** Change the MemPage.pParent pointer on the page whose number is
** given in the second argument so that MemPage.pParent holds the
** pointer in the third argument.
**
** If the final argument, updatePtrmap, is non-zero and the database

    return ptrmapPut(pBt, pgno, PTRMAP_BTREE, pNewParent->pgno);
  }

#ifndef NDEBUG
  /* If the updatePtrmap flag was clear, assert that the entry in the
  ** pointer-map is already correct.
  */
  if( ISAUTOVACUUM ){
  if( ISAUTOVACUUM && sqlite3PagerLookup(pBt->pPager,PTRMAP_PAGENO(pBt,pgno)) ){
    u8 eType;
    Pgno ii;
    int rc;
    ptrmapGet(pBt, pgno, &eType, &ii);
    assert( ii==pNewParent->pgno && eType==PTRMAP_BTREE );
    rc = ptrmapGet(pBt, pgno, &eType, &ii);
    assert( rc==SQLITE_OK && ii==pNewParent->pgno && eType==PTRMAP_BTREE );
  }
#endif

  return SQLITE_OK;
}