Yonggang Luo
296eb2918c
The usage of _MTX_INITIALIZER_NP is a problem. Sure, the code builds on Linux and Windows, and it even usually works, but is problematic. It means that Windows lock debugging tools cannot be used with that code. So we remove _MTX_INITIALIZER_NP to gain the following benefit: Aligning to the C11 standard threads.h definitions. Improving portability of the threading code to better support Windows. This change removes one of the most prolific uses of _MTX_INITIALIZER_NP by slightly increasing the cost of simple_mtx_lock when targeting platforms that don't support futex, but it's cost are far less than the cost of syscall, so the affect are negligible. The futex code path are not affected. And Windows 8 and upper also supports the futex codepath, so it's only affect the Windows version < 8, MacOS or other platforms that doesn't support for futex. Signed-off-by: Yonggang Luo <luoyonggang@gmail.com> Reviewed-by: Jesse Natalie <jenatali@microsoft.com> Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17122>
`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.