// Split a Chunk and insert new Chunk after it
void Aggregate::split(std::vector<Chunk*>::size_type split_index){
Chunk* cell = m_chunk[split_index];
cell->txn()->pause();
// Calculate the split point ie midpoint
// Note: Range is exclusive of previous session
uintmax_t downloaded = cell->txn()->bytesDone();
uintmax_t lower = cell->txn()->range().lb();
uintmax_t upper = cell->txn()->range().ub();
uintmax_t midpoint = (upper+(lower+downloaded))/2;
if( midpoint > upper || midpoint < lower)
Throw(ex::Invalid,"Midpoint");
// Update the upper byte of the byte range.
// no bytes beyond a certain point.
cell->txn()->range().ub(midpoint);
cell->txn()->play();
Range newrange(upper,midpoint);
File* newfile = new File(chunkName(midpoint));
BasicTransaction* newtxn = cell->txn()->clone(newrange);
Chunk* newcell = new Chunk(newtxn,newfile);
// Insert newly created Chunk in the vector after
m_chunk.insert(m_chunk.begin()+split_index+1, newcell);
newcell->txn()->start();
}
int mainloop()
{
unsigned cmd;
nodep myLine;
extern int phys_pcode;
extern int row, scol, ecol;
int curserr;
for (;;) {
here(1);
checkfar(1);
printt5("mainloop, cursor %x, ocursor %x, srch_row %d, srch_real %d, look.=%x\n",
cursor, ocursor, srch_row, srch_real, lookaheadchar);
hist_mark();
printt0("back from hist_mark()\n");
if (lookaheadchar == AL_NOP || lookaheadchar == ' ')
lookaheadchar = 0;
/*
* Redisplay unconditionally, not just when there's no
* typeahead, because often there is typeahead of the
* terminating character, like comma or right paren.
* Ideally the redisplay should be done only if dirty
* from the keyboard driver when we are ready for real
* input.
*/
newrange(FALSE);
display(FALSE);
/*
* ocursor is set by arrow keys to indicate that that's
* where the arrow keys left the cursor. Only if it
* was set (possibly in them middle of a token) and
* hasn't moved since do we want to leave it alone.
*/
here(2);
checkfar(2);
if (cursor != ocursor) {
/* don't do if moves are in type-ahead */
find_phys_cursor( curr_window, cursor,anywflag);
anywflag = FALSE;
phys_pcode = kcget( -1, cursor );
flusht();
}
here(3);
ocursor = NIL;
CheckAt = NIL;
CodeChanged = FALSE;
if( autsave && ascount++ > autsave ) {
ascount = 0;
if( work_fname( curr_workspace ) ) {
save(0);
statusLine();
}
else
warning( ER(220,"autosave`Automatic Save is engaged but there is no file name.") );
}
here(4);
cmd = topcmd( srch_row, srch_real, srch_real+srch_width, cursnode );
printt2("mainloop: topcmd returns %s (%d)\n", tokname(cmd), cmd);
mark_line( cursor, SMALL_CHANGE );
do_command(cmd);
here(5);
checkfar(3);
/* never leave the cursor on a list or below hide */
cursor = hidebound(realcp( cursor ));
mark_line( cursor, SMALL_CHANGE );
curserr = node_flag(cursor) & NF_ERROR;
if( curserr && !WhereDeclsChanged )
{
NodeNum cltype = ntype( t_up_to_line(cursor));
if( ntype_info(cltype) & F_DECLARE||highType( cltype ) )
{
WhereDeclsChanged = my_block(cursor);
printt1("mainloop: WhereDeclsChanged=%x\n",
WhereDeclsChanged);
}
}
/*
* Whenever a graft, etc takes place we check to see
* if changes are being made to a declaration. If they
* are then we set WhereDeclsChanged. If it has been
* set when we get back here we recompile its declaration
* block.
*/
if (CheckSpeed && WhereDeclsChanged &&
(CheckSpeed >= 4 || CodeChanged ||
WhereDeclsChanged != OldDeclsChanged) )
{
if( CheckSpeed < 4 && WhereDeclsChanged != OldDeclsChanged )
{
nodep decswap;
decswap = OldDeclsChanged;
OldDeclsChanged = WhereDeclsChanged;
WhereDeclsChanged = decswap;
printt1("mainloop: WhereDeclsChanged=%x (2)\n",
WhereDeclsChanged);
}
if( WhereDeclsChanged )
{
clr_node_flag(WhereDeclsChanged, NF_TCHECKED);
here(4);
checkfar(4);
c_comp_decls(my_scope(WhereDeclsChanged),
WhereDeclsChanged,
CheckSpeed < 6 ? TC_NOSTUBS :
(TC_DESCEND | TC_FULL) );
here(5);
checkfar(5);
WhereDeclsChanged = NIL;
}
}
/*
* Typecheck the current line. This was added late in the
* game, and isn't really the best way of doing things.
* Every time we return from a command, we typecheck
* the current line (or if CheckAt has already been set
* by a skip down routine, we typecheck there). We
* don't typecheck declarations.
*/
printt2("CheckAt=%x, cursor=%x\n", CheckAt, cursor);
if (!CheckAt && (curserr||is_undid(cursor))) CheckAt = cursor;
if( CheckAt && CheckSpeed )
{
myLine = t_up_to_line(CheckAt);
if (!( highType(ntype(myLine)) ||
(ntype_info(ntype(myLine)) & F_DECLARE)) )
{
printt2("mainloop: c_typecheck(%x, 0, %x)\n",
(int)myLine, TC_NOSTUBS|TC_ONERROR);
c_typecheck(myLine, 0, TC_NOSTUBS|TC_ONERROR );
here(6);
checkfar(6);
}
}
/* if code was changed, clear chance at resuming */
if( CodeChanged )
clear_resume();
#ifdef CHECKSUM
cscheck();
#endif
}
}