=?UTF-8?Q?J=C3=B3zef=20Kucia=20?=: wined3d: Lock wined3d mutex in wined3d_swapchain_resize_target().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0896decb183b4363235e7bd47ff780c92ba992e9
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=0896decb183b4363235e7bd47ff780c92ba992e9

Author: Józef Kucia <jkucia at codeweavers.com>
Date:   Thu Nov 29 14:33:40 2018 +0100

wined3d: Lock wined3d mutex in wined3d_swapchain_resize_target().

Fixes a deadlock. It can also be seen as a small step towards more
fine-grained locking in wined3d.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45431
Signed-off-by: Józef Kucia <jkucia at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dxgi/swapchain.c    |  7 +------
 dlls/wined3d/swapchain.c | 25 ++++++++++++++++++-------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/dlls/dxgi/swapchain.c b/dlls/dxgi/swapchain.c
index 0d325cf..76a4d44 100644
--- a/dlls/dxgi/swapchain.c
+++ b/dlls/dxgi/swapchain.c
@@ -434,7 +434,6 @@ static HRESULT STDMETHODCALLTYPE d3d11_swapchain_ResizeTarget(IDXGISwapChain1 *i
 {
     struct d3d11_swapchain *swapchain = d3d11_swapchain_from_IDXGISwapChain1(iface);
     struct wined3d_display_mode mode;
-    HRESULT hr;
 
     TRACE("iface %p, target_mode_desc %p.\n", iface, target_mode_desc);
 
@@ -451,11 +450,7 @@ static HRESULT STDMETHODCALLTYPE d3d11_swapchain_ResizeTarget(IDXGISwapChain1 *i
 
     wined3d_display_mode_from_dxgi(&mode, target_mode_desc);
 
-    wined3d_mutex_lock();
-    hr = wined3d_swapchain_resize_target(swapchain->wined3d_swapchain, &mode);
-    wined3d_mutex_unlock();
-
-    return hr;
+    return wined3d_swapchain_resize_target(swapchain->wined3d_swapchain, &mode);
 }
 
 static HRESULT STDMETHODCALLTYPE d3d11_swapchain_GetContainingOutput(IDXGISwapChain1 *iface, IDXGIOutput **output)
diff --git a/dlls/wined3d/swapchain.c b/dlls/wined3d/swapchain.c
index 43582ce..2170629 100644
--- a/dlls/wined3d/swapchain.c
+++ b/dlls/wined3d/swapchain.c
@@ -1327,29 +1327,38 @@ static HRESULT wined3d_swapchain_set_display_mode(struct wined3d_swapchain *swap
 HRESULT CDECL wined3d_swapchain_resize_target(struct wined3d_swapchain *swapchain,
         const struct wined3d_display_mode *mode)
 {
-    struct wined3d_device *device = swapchain->device;
     struct wined3d_display_mode actual_mode;
     RECT original_window_rect, window_rect;
+    struct wined3d_device *device;
+    HWND window;
     HRESULT hr;
 
     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 
+    wined3d_mutex_lock();
+
+    device = swapchain->device;
+    window = swapchain->device_window;
+
     if (swapchain->desc.windowed)
     {
         SetRect(&window_rect, 0, 0, mode->width, mode->height);
         AdjustWindowRectEx(&window_rect,
-                GetWindowLongW(swapchain->device_window, GWL_STYLE), FALSE,
-                GetWindowLongW(swapchain->device_window, GWL_EXSTYLE));
+                GetWindowLongW(window, GWL_STYLE), FALSE,
+                GetWindowLongW(window, GWL_EXSTYLE));
         SetRect(&window_rect, 0, 0,
                 window_rect.right - window_rect.left, window_rect.bottom - window_rect.top);
-        GetWindowRect(swapchain->device_window, &original_window_rect);
+        GetWindowRect(window, &original_window_rect);
         OffsetRect(&window_rect, original_window_rect.left, original_window_rect.top);
     }
     else if (swapchain->desc.flags & WINED3D_SWAPCHAIN_ALLOW_MODE_SWITCH)
     {
         actual_mode = *mode;
         if (FAILED(hr = wined3d_swapchain_set_display_mode(swapchain, &actual_mode)))
+        {
+            wined3d_mutex_unlock();
             return hr;
+        }
         SetRect(&window_rect, 0, 0, actual_mode.width, actual_mode.height);
     }
     else
@@ -1358,15 +1367,17 @@ HRESULT CDECL wined3d_swapchain_resize_target(struct wined3d_swapchain *swapchai
                 &actual_mode, NULL)))
         {
             ERR("Failed to get display mode, hr %#x.\n", hr);
+            wined3d_mutex_unlock();
             return hr;
         }
 
         SetRect(&window_rect, 0, 0, actual_mode.width, actual_mode.height);
     }
 
-    MoveWindow(swapchain->device_window, window_rect.left, window_rect.top,
-            window_rect.right - window_rect.left,
-            window_rect.bottom - window_rect.top, TRUE);
+    wined3d_mutex_unlock();
+
+    MoveWindow(window, window_rect.left, window_rect.top,
+            window_rect.right - window_rect.left, window_rect.bottom - window_rect.top, TRUE);
 
     return WINED3D_OK;
 }