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Having four virtual (text) consoles by default seems really overkill
for a system that can't even switch to them anyway (yet!)
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This didn't end up getting used, so let's get rid of it.
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This used to be the base class of ProcFS and DevPtsFS but not anymore.
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Add LayoutPosition and LayoutRange classes. The layout tree root node
now has a selection() LayoutRange. It's essentially a start and end
LayoutPosition.
A LayoutPosition is a LayoutNode, and an optional index into that node.
The index is only relevant for text nodes, where it's the character
index into the rendered text.
HtmlView now updates the selection start/end of the LayoutDocument when
clicking and dragging with the left mouse button.
We don't paint the selection yet, and there's no way to copy what's
selected. It only exists as a LayoutRange.
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This action should not be enabled when there is only one editor open,
since you are not allowed to be editor-less.
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Note that you are not allowed to remove the very last editor.
These keybinds are all temporary while I figure out what the right ones
should be. I'm not exactly sure how, but it'll reveal itself. :^)
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We also now start out with a single editor, instead of two. :^)
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When adding a widget to a parent, you don't always want to append it to
the set of existing children, but instead insert it before one of them.
This patch makes that possible by adding CObject::insert_child_before()
which also produces a ChildAdded event with an additional before_child
pointer. This pointer is then used by GWidget to make sure that any
layout present maintains the correct order. (Without doing that, newly
added children would still be appended into the layout order, despite
having a different widget sibling order.)
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Renamed "Position" to "Elapsed". "channel/channels" automatically
changes now when more than one channel exist. The current file name
is now displayed in the window title.
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m_loaded_samples was incremented with the value of the processed
buffer. This causes m_loaded_samples to be bigger at some point
than m_total_samples when downsampling, as the buffer would contain
more samples than actually loaded.
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By default, disk_benchmark will now use the O_DIRECT flag, causing it
to bypass the kernel's disk caches. This gives you "disk performance"
numbers rather than "disk cache performance" numbers.
You can use "disk_benchmark -c" to enable the caches.
Fixes #703.
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Files opened with O_DIRECT will now bypass the disk cache in read/write
operations (though metadata operations will still hit the disk cache.)
This will allow us to test actual disk performance instead of testing
disk *cache* performance, if that's what we want. :^)
There's room for improvment here, we're very aggressively flushing any
dirty cache entries for the specific block before reading/writing that
block. This is done by walking the entire cache, which may be slow.
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This function allows you to traverse in pre-order without recursing.
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The playback of a file can now be paused, stopped, continued and the
user can seek to any part of the file.
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LibAudio now supports pausing playback, clearing the buffer queue,
retrieving the played samples since the last clear and retrieving
the currently playing shared buffer id
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The SampleWidget now displays the contents of the whole buffer.
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It's too dang frustrating that we actually crash whenever we hit some
unimplemented printf specifier. Let's just log the whole format string
and carry on as best we can.
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Run sudo and keep environment just like in makeall.sh
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The Clang parser used by Qt Creator kept getting confused by this code.
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Apply the same techniques from "cp" to make copying files much faster.
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If an inode is observed by watch_file(), we won't uncache it.
This allows a program to watch a file without keeping it open.
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This helps aid debugging of issues such as #695, where the bridge chip
that controls IDE is NOT a PIIX3/4 compatible controller. Instead of
just hanging when the DMA registers can't be accessed, the system will
inform the user that no valid IDE controller has been found. In this
case, the system will not attempt to initialise the DMA registers and
instead use PIO mode.
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Asking a File if we could possibly read or write it will never mutate
the asking FileDescription&, so it should be const.
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If something goes wrong with a read or write operation, we don't want
to add the error number to the fd's offset. :^)
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...if there are no packets in the receive queue.
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The Plan9 OS has this program that can test a system call with the
given arguments. For the most basic system calls it can be very
helpful and aid with testing or just to play with a given syscall
without writing a dedicated program.
Some examples:
syscall write 1 hello 5
syscall -o read 0 buf 5
syscall mkdir /tmp/my-dir
syscall exit 2
...
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I wrote a version of nl for Serenity with a lot but not all of the
options in POSIX nl. It includes line count type (-b), increment (-i),
delimiter (-s), start number (-v), and width (-w).
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Now gets a true byte count by using the file size.
* When giving a single-line string without a trailing newline, the line
count should not go up ('printf "test" | wc -l' should output '0')
* Doesn't hang up when using two or more switch options in a row.
(It would hang if I did 'wc -lw test.frm').
While mine works with multiple args like that, they don't switch
anything, you have to do wc -l -w etc but I think that is an issue
with CArgsParser.
* It can now take standard input without needing a "-".
* When encountering a file that doesn't exist, it doesn't exit.
It prints the counts for each file that does, and prints an error to
stderr for each file that doesn't.
* Has slight buffering between counts to be closer to GNU and BSD wc.
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`atof()` has now been implemented as part of the standard C library.
It supports scientific notation such as `1.2e-3` etc, ala the version
found as part of `glibc`.
It's a bit chunky, so there's probably room for optimisations here
and there, however, for now it works as intended (and allows Quake
to run).
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Don't keep Inodes around in memory forever after we've interacted with
them once. This is a slight performance pessimization when accessing
the same file repeatedly, but closing it for a while in between.
Longer term we should find a way to keep a limited number of unused
Inodes cached, whichever ones we think are likely to be used again.
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Move the kernel image to the 1 MB physical mark. This prevents it from
colliding with stuff like the VGA memory. This was causing us to end
up with the BIOS screen contents sneaking into kernel memory sometimes.
This patch also bumps the kmalloc heap size from 1 MB to 3 MB. It's not
the perfect permanent solution (obviously) but it should get the OOM
monkey off our backs for a while.
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This ensures that messages are sent in order.
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dispatch_signal() expected a RegisterDump on the kernel stack. However
in certain cases, like just after a clone, this was not the case and
dispatch_signal() would instead write to an incorrect user stack pointer.
We now use the threads TSS in situations where the RegisterDump may not
be valid, fixing the issue.
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This refactors some the RegisterDump code from dispatch_signal
into a stand-alone function, allowing for better reuse.
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