Prior this commit we were always dereferencing the image bitmap pointer,
even if it was null, which resulted in a crash when trying to open
the context menu when an image wasn't loaded.
Closes: #10178
Before this patch, this is what would happen after something crashed:
1. CrashDaemon finds a new coredump in /tmp
2. CrashDaemon compresses the new coredump (gzip)
3. CrashDaemon parses the uncompressed coredump and prints a backtrace
4. CrashDaemon launches CrashReporter
5. CrashReporter parses the uncompressed coredump (again)
6. CrashReporter unlinks the uncompressed coredump
7. CrashReporter displays a GUI
This was taking quite a long time when dealing with large programs
crashing (like Browser's WebContent processes.)
The new flow:
1. CrashDaemon finds a new coredump in /tmp
2. CrashDaemon mmap()'s the (uncompressed) coredump
3. CrashDaemon launches CrashReporter
4. CrashDaemon goes to sleep for 3 seconds (hack alert!)
5. CrashReporter parses the (uncompressed) coredump
6. CrashReporter unlinks the (uncompressed) coredump
7. CrashReporter displays a GUI
8. CrashDaemon wakes up (after step 4)
9. CrashDaemon compresses the coredump (gzip)
TL;DR: we no longer parse the coredumps twice, and we also prioritize
launching the CrashReporter GUI immediately when a new coredump shows
up, instead of compressing and parsing it in CrashDaemon first.
The net effect of this is that you get a backtrace on screen much
sooner. That's pretty nice. :^)
This fixes an issue for the magnifier that when the screen scaling is
increased to 2 the magnifier doesn't center around the cursor.
Since booting Serenity with multiple displays doesn't work at the moment
the rescaling is only added for the one display case.
This makes connections (particularly TLS-based ones) do the handshaking
stuff only once.
Currently the cache is configured to keep at most two connections evenly
balanced in queue size, and with a grace period of 10s after the last
queued job has finished (after which the connection will be dropped).
When there is a file with the same name in the destination directory,
FileManager overwrites that file without any warning. With this change,
such a file will be automatically renamed to "emoji-2.txt", for example.
Also, currently there is a check in FileManager that makes copy and
paste of a file in the same directory no-op. This change removes that
check, because it is no longer a problem.
Previously, AudioServer would deadlock when trying to play another audio
stream, i.e. creating a queue. The m_pending_cond condition was used
improperly, and the condition wait now happens independently of querying
the pending queue for new clients if the mixer is running.
To make the mixer's concurrency-safety code more readable, the use of
raw POSIX mutex and condition syscalls is replaced with Threading::Mutex
and Threading::ConditionVariable.
Across the entire audio system, audio now works in 0-1 terms instead of
0-100 as before. Therefore, volume is now a double instead of an int.
The master volume of the AudioServer changes smoothly through a
FadingProperty, preventing clicks. Finally, volume computations are done
with logarithmic scaling, which is more natural for the human ear.
Note that this could be 4-5 different commits, but as they change each
other's code all the time, it makes no sense to split them up.
This removes the awkward String::replace API which was the only String
API which mutated the String and replaces it with a new immutable
version that returns a new String with the replacements applied. This
also fixes a couple of UAFs that were caused by the use of this API.
As an optimization an equivalent StringView::replace API was also added
to remove an unnecessary String allocations in the format of:
`String { view }.replace(...);`
This allows any client to ask the WindowServer to give it the color
of the screen bitmap under the cursor.
There's currently no way to get the screen bitmap *without* the
cursor already drawn on it, so for now we just take a pixel
beside the actual cursor position to avoid just getting the cursors
color.
This is in preparation for implementing JS scrolling functions, which
specify both x and y scrolling deltas. The visible behavior has not
changed.
Also, moved the "mouse wheel delta * 20" calculation to the
`EventHandler` since the JS calls will want to work directly in pixels.
This commit adds a new request to the FileSystemAccessServer
endpoint, allowing the clients to get read-only access to a file
without getting a Dialog-box prompting the user for access.
This is only meant to be used in cases where the user has asked
specifically to open a file through the command-line arguments.
In those cases, I believe it makes sense for the read-only access
to be implicit. Always prompting the user gets a bit annoying,
especially if you just quickly want to open a file through the CLI.
The new request name has been made extremely specific to make sure
that it's only used when appropriate.
This feature was problematic for several reasons:
- Tracking *all* the user activity seems like a privacy nightmare.
- LibGUI actually only supports one globally tracking widget per window,
even if no window is necessary, or if multiple callbacks are desired.
- Widgets can easily get confused whether an event is actually directed
at it, or is actually just the result of global tracking.
The third item caused an issue where right-clicking CatDog opened two
context menus instead of one.
We are no longer have a separate Inode object class for the pts
directory. With a small exception to this, all chmod and chown code
is now at one place.
It's now possible to create any name of a sub-directory in the
filesystem.
While traversing in both /sys/dev/char and /sys/dev/block, SystemServer
populates the DevFS (mounted normally in /dev) with the corresponding
device nodes.
This is a very crude implementation of populating DevFS device nodes,
before we have a full-fledged udev-like daemon to take care of this
task. Also, we don't populate DiskPartition device nodes yet, because
that requires more sophisticated mechanism to figure out which
DiskPartition is related to which StorageDevice.
Don't create these device nodes in the Kernel, so we essentially enforce
userspace (SystemServer) to take control of this operation and to decide
how to create these device nodes.
This makes the DevFS to resemble linux devtmpfs, and allows us to remove
a bunch of unneeded overriding implementations of device name creation
in the Kernel.
This patch removes the following WebContent IPC calls, which are no
longer used:
- `Server::js_console_initialize()`
- `Client::did_js_console_output()`
With this patch, we now initialize the `WebContentConsoleClient` as soon
as the Page has loaded, instead of waiting for the Console Window to be
shown. This finally lets us see log messages that happened before the
window was opened! :^)
However, it is not perfect. Waiting until the page has loaded means we
lose any messages that happen *during* page load. Ideally we would
initialize the WCCC when the page *starts* loading instead, but it
requires that the page has a document and interpreter assigned and
accessible. As far as I can tell with my limited knowledge, this is not
the case until the page has completed loading.
The `WebContentConsoleClient` now keeps a list of console messages it
has received, so these are not lost if the ConsoleWidget has not been
initialized yet.
This change does break JS console output, but only until the next
commit. :^)
This patch introduces three new IPC calls for WebContent:
- `Client::did_output_js_console_message(index)`:
Notifies the client that a new console message was logged.
- `Server::js_console_request_messages(start_index)`:
Ask the server for console messages starting at the given index.
- `Client::did_get_js_console_messages(start_index, types, messages)`:
Send the client the messages they requested.
This mechanism will replace the current
`Client::did_js_console_output()` call in the next few commits. This
will allow us to display messages in the console that happened before
the console was opened.
`$0` is a helpful variable in other browsers' JS consoles, which points
to whichever DOM Node is currently selected in the DOM Inspector. And
now we have it too! :^)
ConsoleGlobalObject is used as the global object when running javascript
from the Browser console. This lets us implement console-only functions
and variables (like `$0`) without exposing them to webpage content. It
passes other calls over to the usual WindowObject so any code that would
have worked in the webpage will still work in the console. :^)
I broke this when I made the protocol objects be wrapped by smart
pointers to appease static analysis.
The Protocol base class currently VERIFY's that it's never called.
So to have the best of both worlds until someone actually fixes
the code to do proper de-registration, just call `exit(..)` so the
smart pointers never go out of scope.
There are a few places in the system where this could be useful,
such as PixelPaint and the MandelBrot demo. It seems general enough
that it is probably useful to have it as a system-wide cursor rather
than loading it manually each time.
This can be used immediately in PixelPaint (separate commit), but
I am adding this as a system-wide cursor since it may also be useful
for other applications that want to use it.
This is the IPC version of `Document::set_inspected_node()`, using a
node ID.
We return the inspected node's style properties as JSON, so that the DOM
Inspector can immediately display them.
Only one place used this argument and it was to hold on to a strong ref
for the object. Since we already do that now, there's no need to keep
this argument around since this can be easily captured.
This commit contains no changes.
