Add function to update a JsonArrayModel without invalidating it. Now,
for example in the SystemMonitor in the Network tab, a selected line
will not be deselected whenever the data is updated.
pledge_domains() that takes only one String argument was specifically
added as a shortcut for pledging a single domain. So, it makes sense to
use singular here.
The event loop system was previously very singletony to the point that
there's only a single event loop stack per process and only one event
loop (the topmost) can run at a time. This commit simply makes the event
loop stack and related structures thread-local so that each thread has
an isolated event loop system.
Some things are kept at a global level and synchronized with the new
MutexProtected: The main event loop needs to still be obtainable from
anywhere, as it closes down the application when it exits. The ID
allocator is global as IDs should not be shared even between threads.
And for the inspector server connection, the same as for the main loop
holds.
Note that currently, the wake pipe is only created by the main thread,
so notifications don't work on other threads.
This removes the temporary mutex fix for notifiers, introduced in
0631d3fed5 .
The point of a reference type is to behave just like the referred-to
type. So, a Foo& should behave just like a Foo.
In these cases, we had a const Vector. If it was a const Vector of Foo,
iterating over the Vector would only permit taking const references to
the individual Foos.
However, we had a const Vector of Foo&. The behavior should not
change. We should still only be permitted to take const references to
the individual Foos. Otherwise, we would be allowed to mutate the
individual Foos, which would mutate the elements of the const Vector.
This wouldn't modify the stored pointers, but it would modify the
objects that the references refer to. Since references should be
transparent, this should not be legal.
So it should be impossible to get mutable references into a const
Vector. Since we need mutable references in these cases to call the
mutating member functions, we need to mark the Vector as mutable as
well.
build_process_window now uses try_set_main_widget and might return an
error. process_properties_action handles a possible error by simply
not updating the process window if an error occured while building it.
This was a premature optimization from the early days of SerenityOS.
The eternal heap was a simple bump pointer allocator over a static
byte array. My original idea was to avoid heap fragmentation and improve
data locality, but both ideas were rooted in cargo culting, not data.
We would reserve 4 MiB at boot and only ended up using ~256 KiB, wasting
the rest.
This patch replaces all kmalloc_eternal() usage by regular kmalloc().
Unfortunately, most of the users are inside constructors, (and two
others are inside callback lambdas) so the error can't propagate, but
that can be improved later.
Also add slightly richer parse errors now that we can include a string
literal with returned errors.
This will allow us to use TRY() when working with JSON data.
The memory and CPU graphs fail to display anything when the memory size
is larger than 2**31 bytes, because of the small range of int. This
commit makes replaces the type with size_t. Hopefully nobody will have
18 quintillion bytes of memory before this gets replaced. :^)
This small patch allows SystemMonitor's Stack tab to show the name of
the ELF object to which the displayed address refers to. This gives a
bit more of contextual information to the viewer.
A better to show this is probably a table, but I'm not that familiar yet
with the GUI framework in general, so I'm keeping things simple.
Casting u64 to float is probably not a safe thing to do. Also, keep
time deltas in u64 values as they can easily wrap between calculations.
This fixes CPU usage calculation when a process is spinning in a loop.
Previously all memory values on the performance was formatted as KiB,
but with such formatting it can be quite hard to read large numbers
(as mentioned by Andreas on todays office hours livestream :^)).
This patch makes use of the human readable formatting utilies and
displays them in an easier to read format.
Combine the "PCI devices" and "Processors" tabs into a "Hardware" tab.
And then remove the "Interrupts" tab because the number of received
IRQ's per device is not really useful information to expose in this GUI.
If the user needs this, he can check lsirq.
