Function recoverBitmapAlloc

modules/dasSQLITE/sqlite/shell.c:13848–13857

** This function is a no-op if p->errCode is initially other than SQLITE_OK. ** In this case it returns NULL. ** ** Otherwise, an attempt is made to allocate and return a bitmap object ** large enough to store a bit for all page numbers between 1 and nPg, ** inclusive. The bitmap is initially zeroed. */

** inclusive. The bitmap is initially zeroed.
*/
static RecoverBitmap *recoverBitmapAlloc(sqlite3_recover *p, i64 nPg){
  int nElem = (nPg+1+31) / 32;
  int nByte = sizeof(RecoverBitmap) + nElem*sizeof(u32);
  RecoverBitmap *pRet = (RecoverBitmap*)recoverMalloc(p, nByte);

  if( pRet ){
    pRet->nPg = nPg;
  }
  return pRet;
}

/*
** Free a bitmap object allocated by recoverBitmapAlloc().