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Core Wayland window system code and protocol
444d0ff338
Assignments to a wl_proxy's queue member are currently not synchronized with potential reads of that member during event reading/queuing. Assuming atomic pointer value reads and writes (which is a reasonable assumption), and using the documented best practices to handle event queue changes, a queue change should still be safe to perform. That being said, such implicitly atomic accesses are difficult to assess for correctness, especially since they do not introduce memory barriers. To make the code more obviously correct, and handle any potential races we are not currently aware of, this commit updates wl_proxy_set_queue() to set the proxy's event queue under the display lock (all other proxy queue accesses are already done under the display lock). Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com> Suggested-by: Pekka Paalanen <pekka.paalanen@collabora.com> |
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| protocol | ||
| src | ||
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| .editorconfig | ||
| .gitignore | ||
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| CONTRIBUTING.md | ||
| COPYING | ||
| meson.build | ||
| meson_options.txt | ||
| README | ||
| releasing.txt | ||
| wayland-scanner.m4 | ||
| wayland-scanner.mk | ||
What is Wayland?
Wayland is a project to define a protocol for a compositor to talk to
its clients as well as a library implementation of the protocol. The
compositor can be a standalone display server running on Linux kernel
modesetting and evdev input devices, an X application, or a wayland
client itself. The clients can be traditional applications, X servers
(rootless or fullscreen) or other display servers.
The wayland protocol is essentially only about input handling and
buffer management. The compositor receives input events and forwards
them to the relevant client. The clients creates buffers and renders
into them and notifies the compositor when it needs to redraw. The
protocol also handles drag and drop, selections, window management and
other interactions that must go through the compositor. However, the
protocol does not handle rendering, which is one of the features that
makes wayland so simple. All clients are expected to handle rendering
themselves, typically through cairo or OpenGL.
The weston compositor is a reference implementation of a wayland
compositor and the weston repository also includes a few example
clients.
Building the wayland libraries is fairly simple, aside from libffi,
they don't have many dependencies:
$ git clone https://gitlab.freedesktop.org/wayland/wayland
$ cd wayland
$ meson build/ --prefix=PREFIX
$ ninja -C build/ install
where PREFIX is where you want to install the libraries. See
https://wayland.freedesktop.org for more complete build instructions
for wayland, weston, xwayland and various toolkits.