24a9886952
First of all in case when the number CPUs change prevent out-of-bound index access in waybar::modules::CpuUsage::getCpuUsage() Secondly on Linux when updating CPU usage read /sys/devices/system/cpu/present and use it to detect the offline CPUs missing from /proc/stat For offline CPUs report 0 usage and "offline" in the tooltip Fixes issue #3498 On Linux one can test this functionality with: echo 0 > /sys/devices/system/cpu/cpu1/online echo 1 > /sys/devices/system/cpu/cpu1/online On non-Linux OSes I'm not sure how to detect offline CPUs, so I didn't add the offline CPU detection there but at least CPU number change should not cause a crash there anymore or cause memory safety issues after this fix
Waybar 
Highly customizable Wayland bar for Sway and Wlroots based compositors.
Available in all major distributions
Waybar examples
Current features
- Sway (Workspaces, Binding mode, Focused window name)
- River (Mapping mode, Tags, Focused window name)
- Hyprland (Window Icons, Workspaces, Focused window name)
- DWL (Tags, Focused window name) requires dwl ipc patch
- Tray #21
- Local time
- Battery
- UPower
- Power profiles daemon
- Network
- Bluetooth
- Pulseaudio
- Privacy Info
- Wireplumber
- Disk
- Memory
- Cpu load average
- Temperature
- MPD
- Custom scripts
- Custom image
- Multiple output configuration
- And many more customizations
Configuration and Styling
See the wiki for more details.
Installation
Waybar is available from a number of Linux distributions:
An Ubuntu PPA with more recent versions is available here.
Building from source
$ git clone https://github.com/Alexays/Waybar
$ cd Waybar
$ meson setup build
$ ninja -C build
$ ./build/waybar
# If you want to install it
$ ninja -C build install
$ waybar
Dependencies
gtkmm3
jsoncpp
libsigc++
fmt
wayland
chrono-date
spdlog
libgtk-3-dev [gtk-layer-shell]
gobject-introspection [gtk-layer-shell]
libgirepository1.0-dev [gtk-layer-shell]
libpulse [Pulseaudio module]
libnl [Network module]
libappindicator-gtk3 [Tray module]
libdbusmenu-gtk3 [Tray module]
libmpdclient [MPD module]
libsndio [sndio module]
libevdev [KeyboardState module]
xkbregistry
upower [UPower battery module]
Build dependencies
cmake
meson
scdoc
wayland-protocols
On Ubuntu, you can install all the relevant dependencies using this command (tested with 19.10 and 20.04):
sudo apt install \
clang-tidy \
gobject-introspection \
libdbusmenu-gtk3-dev \
libevdev-dev \
libfmt-dev \
libgirepository1.0-dev \
libgtk-3-dev \
libgtkmm-3.0-dev \
libinput-dev \
libjsoncpp-dev \
libmpdclient-dev \
libnl-3-dev \
libnl-genl-3-dev \
libpulse-dev \
libsigc++-2.0-dev \
libspdlog-dev \
libwayland-dev \
scdoc \
upower \
libxkbregistry-dev
Contributions welcome!
Have fun :)
The style guidelines are Google's
License
Waybar is licensed under the MIT license. See LICENSE for more information.