[PATCH] winex11.drv: Detach vulkan surfaces during thread detach.

[Paul Gofman]

Signed-off-by: Paul Gofman <pgofman(a)codeweavers.com>
---
    Supersedes 217240.

    X11DRV_ThreadDetach() destroys thread data part of which
    (e. g., display) is still present in window data in winex11.drv
    and accessible through hwnd. That causes all sort of hangs
    and crashes when the window is still used for Vulkan
    rendering (even if only to tear down the device and swapchain).

    Since it turns out like the issue is actually winex11 - Vulkan specific,
    the new version of the patch implements the clean up in the Vulkan side.

    The introduced list of surfaces can potentially be reused later (maybe
    with some additions) for Vulkan child window rendering implementation.

 dlls/winex11.drv/vulkan.c      | 49 +++++++++++++++++++++++++++++++---
 dlls/winex11.drv/window.c      |  2 +-
 dlls/winex11.drv/x11drv.h      |  2 ++
 dlls/winex11.drv/x11drv_main.c |  1 +
 4 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/dlls/winex11.drv/vulkan.c b/dlls/winex11.drv/vulkan.c
index 1bbdba2ce1d..df40b3bd7ae 100644
--- a/dlls/winex11.drv/vulkan.c
+++ b/dlls/winex11.drv/vulkan.c
@@ -57,12 +57,16 @@ static XContext vulkan_hwnd_context;
 
 #define VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR 1000004000
 
+static struct list surface_list = LIST_INIT( surface_list );
+
 struct wine_vk_surface
 {
     LONG ref;
+    struct list entry;
     Window window;
     VkSurfaceKHR surface; /* native surface */
     HWND hwnd;
+    DWORD hwnd_thread_id;
 };
 
 typedef struct VkXlibSurfaceCreateInfoKHR
@@ -207,6 +211,10 @@ static void wine_vk_surface_release(struct wine_vk_surface *surface)
     if (InterlockedDecrement(&surface->ref))
         return;
 
+    EnterCriticalSection(&context_section);
+    list_remove(&surface->entry);
+    LeaveCriticalSection(&context_section);
+
     if (surface->window)
         XDestroyWindow(gdi_display, surface->window);
 
@@ -219,12 +227,33 @@ void wine_vk_surface_destroy(HWND hwnd)
     EnterCriticalSection(&context_section);
     if (!XFindContext(gdi_display, (XID)hwnd, vulkan_hwnd_context, (char **)&surface))
     {
+        surface->hwnd_thread_id = 0;
+        surface->hwnd = NULL;
         wine_vk_surface_release(surface);
     }
     XDeleteContext(gdi_display, (XID)hwnd, vulkan_hwnd_context);
     LeaveCriticalSection(&context_section);
 }
 
+void vulkan_thread_detach(void)
+{
+    struct wine_vk_surface *surface, *next;
+    DWORD thread_id = GetCurrentThreadId();
+
+    EnterCriticalSection(&context_section);
+    LIST_FOR_EACH_ENTRY_SAFE(surface, next, &surface_list, struct wine_vk_surface, entry)
+    {
+        if (surface->hwnd_thread_id != thread_id)
+            continue;
+
+        TRACE("Detaching surface %p, hwnd %p.\n", surface, surface->hwnd);
+        XReparentWindow(gdi_display, surface->window, get_dummy_parent(), 0, 0);
+        XSync(gdi_display, False);
+        wine_vk_surface_destroy(surface->hwnd);
+    }
+    LeaveCriticalSection(&context_section);
+}
+
 static VkResult X11DRV_vkCreateInstance(const VkInstanceCreateInfo *create_info,
         const VkAllocationCallbacks *allocator, VkInstance *instance)
 {
@@ -298,8 +327,15 @@ static VkResult X11DRV_vkCreateWin32SurfaceKHR(VkInstance instance,
 
     x11_surface->ref = 1;
     x11_surface->hwnd = create_info->hwnd;
-    x11_surface->window = x11_surface->hwnd ? create_client_window(create_info->hwnd, &default_visual)
-                                            : create_dummy_client_window();
+    if (x11_surface->hwnd)
+    {
+        x11_surface->window = create_client_window(create_info->hwnd, &default_visual);
+        x11_surface->hwnd_thread_id = GetWindowThreadProcessId(x11_surface->hwnd, NULL);
+    }
+    else
+    {
+        x11_surface->window = create_dummy_client_window();
+    }
 
     if (!x11_surface->window)
     {
@@ -323,16 +359,17 @@ static VkResult X11DRV_vkCreateWin32SurfaceKHR(VkInstance instance,
         goto err;
     }
 
+    EnterCriticalSection(&context_section);
     if (x11_surface->hwnd)
     {
-        EnterCriticalSection(&context_section);
         if (!XFindContext(gdi_display, (XID)create_info->hwnd, vulkan_hwnd_context, (char **)&prev))
         {
             wine_vk_surface_release(prev);
         }
         XSaveContext(gdi_display, (XID)create_info->hwnd, vulkan_hwnd_context, (char *)wine_vk_surface_grab(x11_surface));
-        LeaveCriticalSection(&context_section);
     }
+    list_add_tail(&surface_list, &x11_surface->entry);
+    LeaveCriticalSection(&context_section);
 
     *surface = (uintptr_t)x11_surface;
 
@@ -713,4 +750,8 @@ void wine_vk_surface_destroy(HWND hwnd)
 {
 }
 
+void vulkan_thread_detach(void)
+{
+}
+
 #endif /* SONAME_LIBVULKAN */
diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 0057a341525..7ec2639e309 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1446,7 +1446,7 @@ static void move_window_bits( HWND hwnd, Window window, const RECT *old_rect, co
  *
  * Create a dummy parent window for child windows that don't have a true X11 parent.
  */
-static Window get_dummy_parent(void)
+Window get_dummy_parent(void)
 {
     static Window dummy_parent;
 
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index 5ed2fcf73fb..e82ee921830 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -587,11 +587,13 @@ extern struct x11drv_win_data *get_win_data( HWND hwnd ) DECLSPEC_HIDDEN;
 extern void release_win_data( struct x11drv_win_data *data ) DECLSPEC_HIDDEN;
 extern Window X11DRV_get_whole_window( HWND hwnd ) DECLSPEC_HIDDEN;
 extern XIC X11DRV_get_ic( HWND hwnd ) DECLSPEC_HIDDEN;
+extern Window get_dummy_parent(void) DECLSPEC_HIDDEN;
 
 extern void sync_gl_drawable( HWND hwnd, BOOL known_child ) DECLSPEC_HIDDEN;
 extern void set_gl_drawable_parent( HWND hwnd, HWND parent ) DECLSPEC_HIDDEN;
 extern void destroy_gl_drawable( HWND hwnd ) DECLSPEC_HIDDEN;
 extern void wine_vk_surface_destroy( HWND hwnd ) DECLSPEC_HIDDEN;
+extern void vulkan_thread_detach(void) DECLSPEC_HIDDEN;
 
 extern void wait_for_withdrawn_state( HWND hwnd, BOOL set ) DECLSPEC_HIDDEN;
 extern Window init_clip_window(void) DECLSPEC_HIDDEN;
diff --git a/dlls/winex11.drv/x11drv_main.c b/dlls/winex11.drv/x11drv_main.c
index e8b273d055e..bd21afc8174 100644
--- a/dlls/winex11.drv/x11drv_main.c
+++ b/dlls/winex11.drv/x11drv_main.c
@@ -645,6 +645,7 @@ void CDECL X11DRV_ThreadDetach(void)
 
     if (data)
     {
+        vulkan_thread_detach();
         if (data->xim) XCloseIM( data->xim );
         if (data->font_set) XFreeFontSet( data->display, data->font_set );
         XCloseDisplay( data->display );
-- 
2.31.1