Since this code is performance-sensitive, let's have the compiler do
whatever it can to help us with the most important files.
This yields a ~8% speedup.
To avoid MMU region lookup on every single instruction fetch, we now
cache a raw pointer to the current instruction. This gets automatically
invalidated when we jump somewhere, but as long as we're executing
sequentially, instruction fetches will hit the cache and bypass all
the region lookup stuff.
This is about a ~2x speedup. :^)
This implements the following optimizations:
* Rather than clearing a HashTable of selected items and re-populating
it every time the selection rectangle changes, determine the delta
by only examining the items that might be in the area where the
selection may have changed compared to the previous area. Then
only add/remove selection items as needed.
* When painting, only query and paint the items actually visible.
Also, keep a local cache of item information such as calculated
rectangles and selection state, so it doesn't have to be calculated
over and over again.
'W' doesn't have to go up to the edges which makes 'WWW'
look better, and it imho looks fine in other contexts too.
Update 'w' to match.
Don't change Katica since it has enough room for the current W.
This commit fixes job control by putting children in their own process
group, and proxying TTY signals to active jobs.
This also cleans up the code around builtin_disown a bit to use
the newer job interfaces.
This patch makes `unzip' mmap the zip file instead of seeking the file
repeatedly.
This makes unzipping big files bearable, and unzipping huge files
impossible.
The later could be fixed by mapping/unmapping chunks on the fly once we
have support for mmap() offsets.
Changes the shortcut to expand and collapse subtrees from alt to
ctrl+right/left arrows in TreeView. The current shortcuts conflict
with applications that already have navigation controls bound to alt
like file manager.
Here's the first time we get a taste of better information than the
real hardware can give us: unlike x86 CPUs, we can actually support
write-only memory, so now we do!
While this isn't immediately useful, it's still pretty cool. :^)
Ultimately we'll want to support passing some options to the emulator
as well, but for now just pass all arguments (except argv[0] of course)
through to the emulated process.
This is still not perfect, but slightly better than what we had before.
In all default fonts, make the lower bar of the F one pixel shorter to
match the middle bare of the E.
Make the W in CsillaThin a bit shorter on the sides and make it
go less high in the middle. This makes it look more like the W in
CsillaBold, makes the middle high spot in W match the height of
the same spot in X Y E F H. Making it shorter on the side makes
the letter look better when its next ot other full-width letters,
e.g. in "WWW".
Make the w in Katica10 match new new W in CsillaThin. The bold
letters already match, and in general it looks like Csilla is
a monospace version of Katica.
