This tells the kernel that the process wants to use pledge, but without
pledging anything - effectively restricting it to syscalls that don't
require a certain promise. This is part of OpenBSD's pledge() as well,
which served as basis for Serenity's.
We were enabling interrupts too early, before the first context switch to
a thread was complete. This could then trigger another context switch
within the context switch, which lead to a crash.
There is a window between acquiring/releasing the lock with the atomic
variables and subsequently waiting or waking threads. With a single
processor this window was closed by using a critical section, but
this doesn't prevent other processors from running these code paths.
To solve this, set a flag in the WaitQueue while holding m_lock which
determines if threads should be blocked at all.
This broke in add01b3, where Core::Timer::create_single_shot() was
changed to create a stopped timer. Fix it by actually starting the timer
right away ourselves.
Fixes#5111.
...and functions implemented in terms of it: blit_brightened(),
blit_dimmed(), blit_disabled().
In theory, this should stop the window server from asserting when
an application becomes unresponsive, but that feature seems to be
broken for unrelated reasons atm (#5111).
If you tried to move a cursor down when the last row is selected, the
index becomes invalid without updating the selection. On the next
cursor movement the invalid index is then reset to {0, 0}, selecting
the first row instead.
Instead of letting each File subclass do range allocation in their
mmap() override, do it up front in sys$mmap().
This makes us honor alignment requests for file-backed memory mappings
and simplifies the code somwhat.
This is in the else block of a `(source.has_alpha_channel() || opacity != 1.0f)`
conditional, so it's guaranteed that !source.has_alpha_channel() in
here, which means source.format() can't be RGBA32.
No behavior change.
If the source image had no alpha channel we'd ignore opacity < 1.0 and
blit the image as if it was fully opaque.
With this fix, adjusting the opacity of windows with mousewheel while
holding super works in hidpi mode.
Personally, I prefer the naming convention DEBUG_FOO over FOO_DEBUG, but
the majority of the debug macros are already named in the latter naming
convention, so I just enforce consistency here.
This was done with the following script:
find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/DEBUG_PATH/PATH_DEBUG/' {} \;
This was done with the help of several scripts, I dump them here to
easily find them later:
awk '/#ifdef/ { print "#cmakedefine01 "$2 }' AK/Debug.h.in
for debug_macro in $(awk '/#ifdef/ { print $2 }' AK/Debug.h.in)
do
find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/#ifdef '$debug_macro'/#if '$debug_macro'/' {} \;
done
# Remember to remove WRAPPER_GERNERATOR_DEBUG from the list.
awk '/#cmake/ { print "set("$2" ON)" }' AK/Debug.h.in
Now we no longer crash on mousewheel over Terminal while holding the
super key. The terminal window doesn't yet correctly become transparent
in hidpi mode (needs more investigation), but it works in LibGfxScaleDemo,
so maybe that's a problem elsewhere.
Also add a FIXME for a pre-existing bug.
Core::IODevice (which Core::File inherits from) does not have a
reasonable way to block for a line. grep was spinning on
IODevice::read_line, passing endless empty strings to the matcher
lambda. Use getline instead, which will at least block in the Kernel for
characters to be available on stdin and only return full lines (or eof)
Booting old computers without RDRAND/RDSEED and without a disk makes
the system severely starved for entropy. Uses interrupts as a source
to side-step that issue.
Also warn whenever the system is starved of entropy, because that's
a non-obvious failure mode.
We have both the normal menu items and keyboard shortcuts for these by
now. No need to have always-visible buttons -- makes the app more
consistent with the other apps, and makes it use up less vertical space.
Implemented move_to_beginning_of_next(), move_to_end_of_next(),
move_to_beginning_of_previous() and move_to_end_of_previous() functions
for more correct word jumping than the move_to_xxx_span() methods that
were previously used.
