The g_file_replace_contents_async() API can potentially call fsync() from
the thread calling into it upon completion. This can have disasterous
effects when run from the compositor main thread such as complete stalls.
This is a followup to 86a00b6872 which
assumed (like the rest of us) that the fsync() would be performed on the
thread that was doing the I/O operations.
You can verify this with an strace -e fsync and cause terminal to display
a command completed notification (eg: from a backdrop window).
This also fixes a lifecycle bug for the variant, as
g_file_replace_contents_async() does not copy the data during the operation
as that is the responsibility of the caller. Instead, we just use a GBytes
variant and reference the variant there.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/1050
As per GNOME/mutter!385 [1], the compositor is finalized an its pointer
cleared on display close.
However, since the shell reacts to such events instead of controlling them,
when the shell is stopping or restarting and its display closing, the shell
stage destroys its children after the display closing is finished and during
this process the focus is unset, causing focus_actor_changed() to be called
and thus calls to meta_stage_is_focused() which deferences the now NULL
compositor, leading to a crash on shutdown.
Since after this point we should just ignore any stage event, disconnect
from them all.
[1] https://gitlab.gnome.org/GNOME/mutter/merge_requests/385https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/746
An Endless OS system was found in the wild with a malformed
.local/share/gnome-shell/notifications. When deserialized in Python,
after passing trusted=True to g_variant_new_from_bytes(), the first
element of the first struct in the array looks like this:
In [41]: _38.get_child_value(0).get_child_value(0)
Out[41]: GLib.Variant('s', '\Uffffffff\Uffffffff\Uffffffff\Uffffffff\Uffffffff')
When deserialised in GJS, we get:
gjs> v.get_child_value(0).get_child_value(0)
[object variant of type "s"]
gjs> v.get_child_value(0).get_child_value(0).get_string()
typein:43:1 malformed UTF-8 character sequence at offset 0
@typein:43:1
@<stdin>:1:34
While g_variant_new_from_bytes() doesn't have much to say about its
'trusted' parameter, g_variant_new_from_data() does:
> If data is trusted to be serialised data in normal form then trusted
> should be TRUE. This applies to serialised data created within this
> process or read from a trusted location on the disk (such as a file
> installed in /usr/lib alongside your application). You should set
> trusted to FALSE if data is read from the network, a file in the
> user's home directory, etc.
Persistent state is read from the user's home directory, so it should
not be trusted. With trusted=False, the string value above comes out as
"".
I don't have an explanation for how this file ended up being malformed.
I also don't have an explanation for when this started crashing: my
guess is that recent GJS became stricter about validating UTF-8 but I
could be wrong!
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1552
In `st`, we can do this by using `ST_PARAM_*`. In the other code files,
just use `G_PARAM_STATIC_STRINGS` directly.
This is just a minor convenience to prevent a few unnecessary string
copies.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/646
If the state we're trying to delete does not exist, do not log an
error.
Prevents this journal warning at startup:
gnome-shell[1082]: Could not delete runtime/persistent state file: Error removing file /run/user/1000/gnome-shell/runtime-state-LE.:0/screenShield.locked: No such file or directory
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/555
This is an expensive operation that is best avoided in the main loop. Given
the call doesn't care much about returning error or status, it can just
be made async within.
Every operation on a given file will be destructive wrt previous
operations on the same file, so we just cancel any pending operation on
it before batching the current one.
Closes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/815
All callers have been updated to use MetaSoundPlayer. This drops direct
usage of libcanberra-gtk, and the X11 connection indirectly. One thing
worth noting is that we pass less metadata (eg. event x/y that might be
used for surrounding effects). This was all largely unused, so the
MetaSoundPlayer was made simpler.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/327
GSettings now recognizes per-desktop overrides that can be used
to change schemas' default values for a particular desktop. This
is not entirely unlike our existing custom override mechanism in
mutter, except that it is not limited to keys in org.gnome.mutter,
and it doesn't require a separate schema - the latter means that
we (and gnome-teak-tool) no longer have to figure out the correct
schema for the current login session and just use the original one.
https://bugzilla.gnome.org/show_bug.cgi?id=786496
Remove any usage of MetaScreen, as it has been removed from libmutter
in the API version 3. The corresponding functionality has been moved
into three different places: MetaDisplay, MetaX11Display (for X11
specific functionality) and MetaWorkspaceManager.
https://bugzilla.gnome.org/show_bug.cgi?id=759538
The imagedir and userdatadir variables are not fetched from
constants/environment but created with g_strdup*/g_build*. Acknowledge that
and also free the strings in finalize.
Rename the signals which have been used to handle XDnd events to more inclusive
ones. So that these signals can be used to handle the DnD events in Wayland.
https://bugzilla.gnome.org/show_bug.cgi?id=765003
Solaris 11.3.5 and later have a Linux-compatible implementation of
/proc/self/cmdline, so the code to use it can be enabled in gnome-shell
on Solaris - if used on an older OS, it simply fails to open the file
and returns without doing anything, just as the code did before enabling
this.
https://bugzilla.gnome.org/show_bug.cgi?id=776199
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This will be required in the upcoming version of GJS.
The reference count on ShellGlobal is 2 at this point, because JS holds a
reference due to the "window.global = Shell.Global.get()" line in
ui/environment.js. Therefore, destroy the GjsContext first, then unref
the ShellGlobal object.
Cleaning up ShellGlobal was previously only enabled behind a debug
environment variable, but it should be required now.
https://bugzilla.gnome.org/show_bug.cgi?id=775374
Negative values don't make sense to timestamps, and an unsigned
timestamp as returned by shell_global_get_current_time() or
Gdk/Clutter events may exceed the range of signed integers.
https://bugzilla.gnome.org/show_bug.cgi?id=769216
The text-scaling-factor GSetting was not being properly propagated
to clutter and the Pango font map; under X this is done by Clutter,
which listens to XSETTINGS directly.
https://bugzilla.gnome.org/show_bug.cgi?id=756447
All current code assumes that the list of window actors corresponds to the
list of windows; however as the list returned by meta_get_window_actors()
now includes actors during the destroy animation, that assumption breaks.
Eventually we should make everyone move to a more appropriate API, but
for now make it work again by returning a filtered list of "good"
window actors.
https://bugzilla.gnome.org/show_bug.cgi?id=735927
It's useful to know how long frames are taking to render on the GPU.
This is impossible to measure in the normal case because frames may
parallelize with previous frames, but by calling glFinish() at the
end of the frame, we can create a (somewhat artificial, but useful)
environment where we have a meaningful timestamp for the frame
finishing drawing.
https://bugzilla.gnome.org/show_bug.cgi?id=732350
Instead of always logging frame timestamps for every frame - which
was using >26 bytes of memory per frame, or 5MB per hour of continuous
redrawing - make frame timestamps something that defaults off and is
turned turned on using a new ShellGlobal::frame-timestamps property by
the perf scripts.
https://bugzilla.gnome.org/show_bug.cgi?id=732350
On X11 we don't need to scale up fonts because font scaling is already handled
by clutter based xft-dpi. On wayland we need to set the resolution by ourselves
so do that when the scale factor changes.
https://bugzilla.gnome.org/show_bug.cgi?id=732537
