Using fstatat() allows the kernel to do relative path resolution as
opposed to absolute path resolution, which is significantly faster
and allows us to build the path cache sooner. :^)
Result classes now return their bitmap via a virtual Gfx::Bitmap*
getter. This effectively makes bitmap fetching lazier, since only
results that end up on screen actually get asked for their bitmap.
This drastically reduces the amount of work done by the FileProvider
background worker.
This should speed it up quite a bit and give us more consistent
performance. (So this workflow could eventually be used for perf
regression testing as well)
This workaround disables the in-kernel interrupt controller.
This impacts the VM performance and should probably be removed
when the workaround is no longer needed.
This workaround was posed by stelar7.
See #7523
When the root path of a DirIterator ends with '/', we don't need to
add another '/' before appending the file name.
Fixes an issue where files found by Assistant had 2 leading slashes.
We use a switch-case statements to ensure we try to find the best
suitable driver for a specific graphics card. In case we don't find
such, we use the default statement to initialize the graphics card as a
generic VGA adapter, if the adapter is VGA compatible.
If we couldn't initialize the driver, we don't touch this adapter
anymore.
Also, GraphicsDevice should not be tied to a PCI::Address member, as it
can be theortically be used with other buses (e.g. ISA cards).
We were building with red-zone before, but were not accounting for it on
signal handler entries. This should fix that.
Also shorten the stack alignment calculations for this.
Also, make it return a reference as aside from only three special
situations (creating, destroying, and moving a window between stacks)
a window should always be on a window stack. Any access during those
brief situations would be a bug, so we should VERIFY this.
This solves two problems:
* A window was sometimes deemed occluded when the window rect was
entirely covered by other rectangles, transparent or opaque. This
caused a window to stop rendering even if a small portion was still
visible, e.g. when it was merely covered by a window shadow.
* The window switcher is interested in window updates even when a
window is entirely covered by another one, or when it is on another
desktop. This forces windows to be not occluded in those cases.
When using the Super+Tab hotkey then all windows will be displayed,
and we will switch to another virtual desktop if needed.
When using the Alt+Tab hotkey then only the windows on the current
desktop will be displayed.
This also adds the ability to query how many virtual desktops are
set up, and for the Taskbar to be notified when the active virtual
desktop has changed.
This creates a 2-dimensional array of WindowStack instances, one for
each virtual desktop. The main desktop 0,0 is the main desktop, which
is the desktop used for all stationary windows (e.g. taskbar, desktop).
When adding windows to a desktop, stationary windows are always added
to the main desktop.
When composing the desktop, there are usually two WindowStacks
involved. For stationary windows, the main desktop will be traversed,
and for everything else the current virtual desktop will be iterated.
Iteration is interweaved to preserve the correct order. During the
transition animation, two WindowStacks will be iterated at the same
time.
Previously we'd place the QEMU binaries into the architecture-specific
toolchain directory. This is a problem because the BuildIt.sh script
clears those directories which also removes the QEMU binaries users
may have built earlier. Also, the QEMU binaries are not specific to
the target architecture.
Mention the "Open Project Wizard" where you can set
the CMake options before making the cache.
Remind users to use the "Default" build type
and to build the Toolchain so CMake does not complain.
This patch implements spec-compliant runtime semantics for the following
constructs:
- super.property
- super[property]
The MakeSuperPropertyReference AO is added to support this. :^)
Right now we're using the FS segment for our per-CPU struct. On x86_64
there's an instruction to switch between a kernel and usermode GS
segment (swapgs) which we could use.
This patch doesn't update the rest of the code to use swapgs but it
prepares for that by using the GS segment instead of the FS segment.
These small changes fix the remaining warnings that come up during
kernel compilation with Clang. These specific fixes were for benign
things: unused lambda captures and braces around scalar initializers.
Aggregate initialization with brace-enclosed parameters is a
[C++20 feature][1] not yet implemented by Clang. This caused compile
errors if we tried to use the factory functions to create smart pointers
to aggregates.
As a (temporary) fix, [the LWG's previously proposed solution][2] is
implemented by this commit.
Now, wherever it's not possible to direct-initialize, aggregate
initialization is performed.
[1]:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0960r3.html
[2]: http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#2089
When creating uninitialized storage for variables, we need to make sure
that the alignment is correct. Fixes a KUBSAN failure when running
kernels compiled with Clang.
In `Syscalls/socket.cpp`, we can simply use local variables, as
`sockaddr_un` is a POD type.
Along with moving the `alignas` specifier to the correct member,
`AK::Optional`'s internal buffer has been made non-zeroed by default.
GCC emitted bogus uninitialized memory access warnings, so we now use
`__builtin_launder` to tell the compiler that we know what we are doing.
This might disable some optimizations, but judging by how GCC failed to
notice that the memory's initialization is dependent on `m_has_value`,
I'm not sure that's a bad thing.
The `#pragma GCC diagnostic` part is needed because the class has
virtual methods with the same name but different arguments, and Clang
tries to warn us that we are not actually overriding anything with
these.
Weirdly enough, GCC does not seem to care.
