Rémi Bernon : win32u: Stop using a recursive mutex for the offscreen surface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0afa484b50c50a459da7ed28eb1cfd46f920ed57
URL:    https://gitlab.winehq.org/wine/wine/-/commit/0afa484b50c50a459da7ed28eb1cfd4...

Author: Rémi Bernon <rbernon(a)codeweavers.com>
Date:   Mon Mar  4 17:10:08 2024 +0100

win32u: Stop using a recursive mutex for the offscreen surface.

---

 dlls/win32u/dce.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/dlls/win32u/dce.c b/dlls/win32u/dce.c
index d304074c427..491c21f0ff5 100644
--- a/dlls/win32u/dce.c
+++ b/dlls/win32u/dce.c
@@ -179,6 +179,7 @@ static void offscreen_window_surface_flush( struct window_surface *base )
 static void offscreen_window_surface_destroy( struct window_surface *base )
 {
     struct offscreen_window_surface *impl = impl_from_window_surface( base );
+    pthread_mutex_destroy( &impl->mutex );
     free( impl );
 }
 
@@ -198,7 +199,6 @@ void create_offscreen_window_surface( const RECT *visible_rect, struct window_su
     struct offscreen_window_surface *impl;
     SIZE_T size;
     RECT surface_rect = *visible_rect;
-    pthread_mutexattr_t attr;
 
     TRACE( "visible_rect %s, surface %p.\n", wine_dbgstr_rect( visible_rect ), surface );
 
@@ -224,10 +224,7 @@ void create_offscreen_window_surface( const RECT *visible_rect, struct window_su
     impl->header.ref = 1;
     impl->header.rect = surface_rect;
 
-    pthread_mutexattr_init( &attr );
-    pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_RECURSIVE );
-    pthread_mutex_init( &impl->mutex, &attr );
-    pthread_mutexattr_destroy( &attr );
+    pthread_mutex_init( &impl->mutex, NULL );
 
     reset_bounds( &impl->bounds );