[Git][wine/wine][master] winewayland.drv: Avoid ABBA deadlocks between win_data_mutex and user_mutex.

[Alexandre Julliard (＠julliard)]

Alexandre Julliard pushed to branch master at wine / wine


Commits:
a334c147 by Jiangyi Chen at 2026-07-24T22:18:38+02:00
winewayland.drv: Avoid ABBA deadlocks between win_data_mutex and user_mutex.

Make the lock acquisition order consistent: always acquire the user_mutex lock
on the user32 side first, and then the win_data_mutex on the wayland side.
Otherwise, when the CCTV Video main program starts, there is a nearly 40%
probability of a race deadlock between set_client_surface and update_surface_region
(which indirectly calls wayland_window_surface_flush).

Signed-off-by: Jiangyi Chen <[e-mail]>

- - - - -


2 changed files:

- dlls/winewayland.drv/wayland_surface.c
- dlls/winewayland.drv/window.c


View it on GitLab: https://gitlab.winehq.org/wine/wine/-/commit/a334c147f81eac361c70fd1b7f67ed4...

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View it on GitLab: https://gitlab.winehq.org/wine/wine/-/commit/a334c147f81eac361c70fd1b7f67ed4...
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