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 .
This has some risks as it can (attempt to) load arbitrary files on the
filesystem but for now it can only load local files which do go through
normal file operations. But let's enable it for now to see what we can
do with it.
This also refactors interpreter creation to follow
InitializeHostDefinedRealm, but I couldn't fit it in the title :^)
This allows us to follow the spec much more closely rather than being
completely ad-hoc with just the parse node instead of having all the
surrounding data such as the realm of the parse node.
The interpreter creation refactor creates the global execution context
once and doesn't take it off the stack. This allows LibWeb to take the
global execution context and manually handle it, following the HTML
spec. The HTML spec calls this the "realm execution context" of the
environment settings object.
It also allows us to specify the globalThis type, as it can be
different from the global object type. For example, on the web, Window
global objects use a WindowProxy global this value to enforce the same
origin policy on operations like [[GetOwnProperty]].
Finally, it allows us to directly call Program::execute in perform_eval
and perform_shadow_realm_eval as this moves
global_declaration_instantiation into Interpreter::run
(ScriptEvaluation) as per the spec.
Note that this doesn't evalulate Source Text Modules yet or refactor
the bytecode interpreter, that's work for future us :^)
This patch was originally build by Luke for the environment settings
object change but was also needed for modules. So I (davidot) have
modified it with the new completion changes and setup for that.
Co-authored-by: davidot <davidot@serenityos.org>
Previously, Browser loaded icons from the disk every time an icon
was set. In addition to making more calls to the disk and decoding
more images, this makes error propagation impossible. This change
moves all icon loading to the start of the program.
This commit also removed the redundant `filename` parameter from
`GLContextWidget::load_file`, since the filename is already stored
within the file itself.
Previously when opening a crash report for HackStudio, the
`unveil("/bin/HackStudio", "rx")` call was failing because of the
earlier `unveil(executable_path.characters(), "r")` call requesting only
"r" permissions for it. This patch handles this specific case, so you
can crash HackStudio to your heart's content. :^)
Also, we were unveiling the executable path twice, once manually and
once implicitly as part of the coredump's libraries, so we now check for
the latter and avoid it.
Thanks to Daniel for noticing what was right in front of me and I didn't
see!
Co-authored-by: Daniel Bertalan <dani@danielbertalan.dev>
Rather than using a hard-coded list from AK::UnicodeUtils, LibUnicode
contains the up-to-date official names and contains abbreviations for
more control code points.
Font Metadata's GroupBox height was off by an _unsightly_ 2 pixels.
Now we make heights explicit for all child widgets and let shrink_to_fit
automatically calculate things.
This works the same way as the command-line usage, searching against the
display name as provided by LibUnicode.
I've modified the search loop to cover every possible unicode
code-point, since my previous logic was flawed. Code-points are not
dense, there are gaps, so simply iterating up to the count of them will
skip ones with higher values. Surprisingly, iterating all 1,114,112 of
them still runs in a third of a second. Computers are fast!
This adds a TextBox along the bottom of the window. Double-clicking on a
character will append it to this box, which you can edit as any other
TextBox, or click the copy button to copy the output to the clipboard.
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.
If the Threading::BackgroundAction for filesystem indexing in
FileProvider hadn't finished by the time the main thread exited, it
would still try to access the FileProvider object that lived in the main
thread, thereby causing a segfault and crashing. This commit prevents
FileProvider from being destroyed while the background thread is still
running by giving the background thread a strong reference to its
FileProvider.
This change unfortunately cannot be atomically made without a single
commit changing everything.
Most of the important changes are in LibIPC/Connection.cpp,
LibIPC/ServerConnection.cpp and LibCore/LocalServer.cpp.
The notable changes are:
- IPCCompiler now generates the decode and decode_message functions such
that they take a Core::Stream::LocalSocket instead of the socket fd.
- IPC::Decoder now uses the receive_fd method of LocalSocket instead of
doing system calls directly on the fd.
- IPC::ConnectionBase and related classes now use the Stream API
functions.
- IPC::ServerConnection no longer constructs the socket itself; instead,
a convenience macro, IPC_CLIENT_CONNECTION, is used in place of
C_OBJECT and will generate a static try_create factory function for
the ServerConnection subclass. The subclass is now responsible for
passing the socket constructed in this function to its
ServerConnection base; the socket is passed as the first argument to
the constructor (as a NonnullOwnPtr<Core::Stream::LocalServer>) before
any other arguments.
- The functionality regarding taking over sockets from SystemServer has
been moved to LibIPC/SystemServerTakeover.cpp. The Core::LocalSocket
implementation of this functionality hasn't been deleted due to my
intention of removing this class in the near future and to reduce
noise on this (already quite noisy) PR.
