Before this commit, Waybar would sometimes get into a state
where it would consume 100% of a CPU core, and the pulseaudio widget
would stop responding to volume adjustments.
In this state, the pulseaudio mainloop thread would spin, with the
counter of enabled defer events at 1, but no actual enabled defer
event in the list to get the counter back to zero after an iteration
in the mainloop.
This could happen if the unsynchronized interactions with the mainloop
thread happened to modify the list of deferred events at the same
time as the mainloop.
This commit introduces locking in accordance with the PulseAudio
documentation on the threaded mainloop:
> The lock needs to be held whenever you call any PulseAudio function that
> uses an object associated with this main loop. Those objects include
> pa_mainloop, pa_context, pa_stream and pa_operation, and the various event
> objects (pa_io_event, pa_time_event, pa_defer_event).
This Patch allows the stretching of modules-{left,center,right} as well
add a "expand" flag to AModule. This allows one module to consume the
leftover space.
To allow the left or right modules to fully consume the center, the
changes also include a way to remove the center box (center_)
altogether.
Both flags are wrong, because:
- the active group member can be fullscreened.
- technically, a grouped window can be solo as well, because only the active group member is shown, the other members are hidden. Also you can have a group consisting of only one window.
The waybar process does not exit instantaneously.
Signals may be recevied after main has started freeing resources.
When a worker thread is in `fgets` this time window can last forever.
An easy way to duplicate the crash is pressing ^C twice with a Hyprland module.
Thread 1 "waybar" received signal SIGSEGV, Segmentation fault.
spdlog::sinks::sink::should_log (this=0x5f620b542ca5,
msg_level=spdlog::level::info)
at /usr/src/debug/spdlog/spdlog-1.14.1/include/spdlog/sinks/sink-inl.h:13
13 return msg_level >= level_.load(std::memory_order_relaxed);
(gdb) p $_siginfo._sifields._sigfault.si_addr
$1 = (void *) 0x5f620b542cad
on sinkInfo callbacks, the default sink now has highest priority.
That fixes an issue that the volume indicator is not updated when
the changes the default output to another devices.
added PA_SINK_IDLE as valid state. PA_SINK_RUNNING is only true
if any sound output is happening on sink switch. Indicator should
also update when no sound is being played.
The current documentation for the custom module suggests mixing manual
(`{icon}`) and automatic (`{}`) indexing of format args. Newer versions
of the fmt library seem to not support this anymore (see issue #3605).
This commit introduces a name for the `text` output of the script, so
that `{text}` can now be used instead of `{}` in the configuration.
All the mode or visibility changes require `wl_surface_commit` to be
applied. gtk-layer-shell will attempt to force GTK to commit, but may
fail if the surface has stopped receiving frame callbacks[^1].
Thus, we could get stuck in a state where the bar is hidden and unable
to regain visibility.
To address this, a new API has been added to gtk-layer-shell,
`gtk_layer_try_force_commit`, which does `wl_surface_commit` with the
necessary safety checks to avoid corrupting GTK internal state.
Note: this change bumps gtk-layer-shell requirement to 0.9.0.
[^1]: https://github.com/wmww/gtk-layer-shell/issues/185
This fixes a major inconsistency with the swaybar implementation of
these modes[^1]. `overlay` layer no longer has security implications due
to a wide adoption of `ext-session-lock`, so it's safe to use.
Following config will restore the previous behavior:
```json
"modes": {
"hide": { "layer": "top" },
"overlay": { "layer": "top" }
},
```
[^1]: 2f7247e08a
While looping over all the upower devices, the currently set device that will be rendered in the waybar, is overridden. Since the loop doesn't end when the device is found, the upDevice_ is overridden with NULL in the iteration for the next device.
Now we only override upDevice_ if the current device matches the constraints.
Fixes d2a719d67c ("Redo to minimize code duplication.")
Fixes#3267
