This patch introduces a "MallocTracer" to the UserspaceEmulator.
If this object is present on the Emulator, it can be notified whenever
the emulated program does a malloc() or free().
The notifications come in via a magic instruction sequence that we
embed in the LibC malloc() and free() functions. The sequence is:
"salc x2, push reg32 x2, pop reg32 x3"
The data about the malloc/free operation is in the three pushes.
We make sure the sequence is harmless when running natively.
Memory accesses on MmapRegion are then audited to see if they fall
inside a known-to-be-freed malloc chunk. If so, we complain loud
and red in the debugger output. :^)
This is very, very cool! :^)
It's also a whole lot slower than before, since now we're auditing
memory accesses against a new set of metadata. This will need to be
optimized (and running in this mode should be opt-in, perhaps even
a separate program, etc.)
This solves a problem where windows don't receive a WindowInputLeft
event when popup menus are opened. This prevented ComboBox being
closed when right clicking the application on the task bar.
Here goes mkdir(), unlink(), socket(), getsockopt(), fchmod()
bind(), connect(), listen(), select() and recvfrom().
They're not perfect but they seem to work. :^)
Ctrl-L focuses the location bar in all file managers I know of,
and does so in SerenityOS's browser too. It should work in
SerenityOS's file manager as well.
Unfortunately, Ctrl-L was already "View List", so change the
shortcuts of all the view modes to Ctrl-1/2/3 which is what
several other file managers use. (I tried Ctrl-Shift-1/2/3
which is what Windows Explorer uses after 8.1, but it didn't
Just Work, and Ctrl-1/2/3 are currently free anyways. If
we ever want to use them for tabs or whatever, we can
change the view shortcuts then.)
Accessory windows are windows that, when activated, will activate
their parent and bring all other accessory windows of that parent
to the front of the window stack. Accessory windows can only be
active input windows. The accessory window's parent is always the
active window regardless of whether it is also the active input
window.
In order to route input correctly, input is now sent to the active
input window, which can be any accessory window or their parent,
or any regular window.
The a32 bit tells us whether a memory address is 32-bit or not.
We already have this information in Instruction, so just plumb that
around instead of double-caching the bit.
Adds a new highlighting effect to the actively selected row in
ComboBox ListView. ComboBoxEditor can now be controlled with
page up, page down, and the up and down arrow keys. ESC and loss
of focus now cause comboboxes to close. Now activates on mouseup
as well as return.
Adds a new, more restrictive read-only state to TextEditor which
forbids copying, selecting, editor cursors, and context menus.
Provides a unique appearance on focus which accomodates ComboBox
widgets. All TextEditor modes are now accessed by enum and
set_mode() which sets the editor to Editable, ReadOnly or
DisplayOnly. Updates applications still using set_readonly().
By adding a special LauncherType::Application we can still
get meta data for the application, but also know that we should
consider executing that binary as the default action. LaunchServer
will not do this for us, as it should probably not be allowed to
run arbitrary binaries that haven't been registered as handlers.
For now, only the non-standard _SC_NPROCESSORS_CONF and
_SC_NPROCESSORS_ONLN are implemented.
Use them to make ninja pick a better default -j value.
While here, make the ninja package script not fail if
no other port has been built yet.
Finally use Symbol.iterator protocol in language features :) currently
only used in for-of loops and spread expressions, but will have more
uses later (Maps, Sets, Array.from, etc).
