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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/210154">210154</a></dd>
<dt>Author</dt> <dd>carlosgc@webkit.org</dd>
<dt>Date</dt> <dd>2016-12-27 02:33:25 -0800 (Tue, 27 Dec 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>Revert &quot;Merge <a href="http://trac.webkit.org/projects/webkit/changeset/205852">r205852</a> - [GTK] Crash of WebProcess on the last WebView disconnect (take two)&quot;

This reverts commit c6853af17a2290c2321cce33f5e012656511d27c.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit214SourceWebCoreChangeLog">releases/WebKitGTK/webkit-2.14/Source/WebCore/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsPlatformDisplayh">releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/PlatformDisplay.h</a></li>
<li><a href="#releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsglxGLContextGLXcpp">releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.cpp</a></li>
<li><a href="#releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsglxGLContextGLXh">releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.h</a></li>
<li><a href="#releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsx11PlatformDisplayX11cpp">releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="releasesWebKitGTKwebkit214SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.14/Source/WebCore/ChangeLog (210153 => 210154)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.14/Source/WebCore/ChangeLog        2016-12-27 08:04:25 UTC (rev 210153)
+++ releases/WebKitGTK/webkit-2.14/Source/WebCore/ChangeLog        2016-12-27 10:33:25 UTC (rev 210154)
</span><span class="lines">@@ -1732,32 +1732,6 @@
</span><span class="cx">         (WebCore::ScrollbarThemeGtk::paint):
</span><span class="cx">         (WebCore::ScrollbarThemeGtk::scrollbarThickness):
</span><span class="cx"> 
</span><del>-2016-09-12  Carlos Garcia Campos  &lt;cgarcia@igalia.com&gt;
-
-        [GTK] Crash of WebProcess on the last WebView disconnect (take two)
-        https://bugs.webkit.org/show_bug.cgi?id=161842
-
-        Reviewed by Michael Catanzaro.
-
-        The problem is that when PlatformDisplayX11 is destroyed, the sharing GL context is deleted and its destructor
-        makes a downcast of PlatformDisplay to get the native X11 display. We could simply keep a pointer to the native
-        X11 display in GLContextGLX, got at construction time from the PlatformDisplay, and ensure the sharing GL
-        context is deleted before the native X11 display is closed.
-
-        * platform/graphics/PlatformDisplay.h: Make m_sharingGLContext protected.
-        * platform/graphics/glx/GLContextGLX.cpp:
-        (WebCore::GLContextGLX::GLContextGLX): Initialize m_x11Display.
-        (WebCore::GLContextGLX::~GLContextGLX): Use m_x11Display and remove confusing comment about possible crash with
-        nviedia closed drivers.
-        (WebCore::GLContextGLX::defaultFrameBufferSize): Use m_x11Display.
-        (WebCore::GLContextGLX::makeContextCurrent): Ditto.
-        (WebCore::GLContextGLX::swapBuffers): Ditto.
-        (WebCore::GLContextGLX::swapInterval): Ditto.
-        (WebCore::GLContextGLX::cairoDevice): Ditto.
-        * platform/graphics/glx/GLContextGLX.h:
-        * platform/graphics/x11/PlatformDisplayX11.cpp:
-        (WebCore::PlatformDisplayX11::~PlatformDisplayX11): Delete the sharing GL context before closing the display.
-
</del><span class="cx"> 2016-09-06  Carlos Garcia Campos  &lt;cgarcia@igalia.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [GTK] Crash of WebProcess on the last WebView disconnect
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsPlatformDisplayh"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/PlatformDisplay.h (210153 => 210154)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/PlatformDisplay.h        2016-12-27 08:04:25 UTC (rev 210153)
+++ releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/PlatformDisplay.h        2016-12-27 10:33:25 UTC (rev 210154)
</span><span class="lines">@@ -80,10 +80,6 @@
</span><span class="cx">     EGLDisplay m_eglDisplay;
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><del>-#if USE(EGL) || USE(GLX)
-    std::unique_ptr&lt;GLContext&gt; m_sharingGLContext;
-#endif
-
</del><span class="cx"> private:
</span><span class="cx">     static std::unique_ptr&lt;PlatformDisplay&gt; createPlatformDisplay();
</span><span class="cx"> 
</span><span class="lines">@@ -94,6 +90,9 @@
</span><span class="cx">     int m_eglMajorVersion { 0 };
</span><span class="cx">     int m_eglMinorVersion { 0 };
</span><span class="cx"> #endif
</span><ins>+#if USE(EGL) || USE(GLX)
+    std::unique_ptr&lt;GLContext&gt; m_sharingGLContext;
+#endif
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> } // namespace WebCore
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsglxGLContextGLXcpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.cpp (210153 => 210154)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.cpp        2016-12-27 08:04:25 UTC (rev 210153)
+++ releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.cpp        2016-12-27 10:33:25 UTC (rev 210154)
</span><span class="lines">@@ -179,7 +179,6 @@
</span><span class="cx"> 
</span><span class="cx"> GLContextGLX::GLContextGLX(PlatformDisplay&amp; display, XUniqueGLXContext&amp;&amp; context, GLNativeWindowType window)
</span><span class="cx">     : GLContext(display)
</span><del>-    , m_x11Display(downcast&lt;PlatformDisplayX11&gt;(m_display).native())
</del><span class="cx">     , m_context(WTFMove(context))
</span><span class="cx">     , m_window(static_cast&lt;Window&gt;(window))
</span><span class="cx"> {
</span><span class="lines">@@ -188,7 +187,6 @@
</span><span class="cx"> 
</span><span class="cx"> GLContextGLX::GLContextGLX(PlatformDisplay&amp; display, XUniqueGLXContext&amp;&amp; context, XUniqueGLXPbuffer&amp;&amp; pbuffer)
</span><span class="cx">     : GLContext(display)
</span><del>-    , m_x11Display(downcast&lt;PlatformDisplayX11&gt;(m_display).native())
</del><span class="cx">     , m_context(WTFMove(context))
</span><span class="cx">     , m_pbuffer(WTFMove(pbuffer))
</span><span class="cx"> {
</span><span class="lines">@@ -197,7 +195,6 @@
</span><span class="cx"> 
</span><span class="cx"> GLContextGLX::GLContextGLX(PlatformDisplay&amp; display, XUniqueGLXContext&amp;&amp; context, XUniquePixmap&amp;&amp; pixmap, XUniqueGLXPixmap&amp;&amp; glxPixmap)
</span><span class="cx">     : GLContext(display)
</span><del>-    , m_x11Display(downcast&lt;PlatformDisplayX11&gt;(m_display).native())
</del><span class="cx">     , m_context(WTFMove(context))
</span><span class="cx">     , m_pixmap(WTFMove(pixmap))
</span><span class="cx">     , m_glxPixmap(WTFMove(glxPixmap))
</span><span class="lines">@@ -221,8 +218,10 @@
</span><span class="cx">         m_cairoDevice = nullptr;
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    // This may be necessary to prevent crashes with NVidia's closed source drivers. Originally
+    // from Mozilla's 3D canvas implementation at: http://bitbucket.org/ilmari/canvas3d/
</ins><span class="cx">     glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
</span><del>-    glXMakeCurrent(m_x11Display, None, None);
</del><ins>+    glXMakeCurrent(downcast&lt;PlatformDisplayX11&gt;(m_display).native(), None, None);
</ins><span class="cx"> 
</span><span class="cx">     m_context = nullptr;
</span><span class="cx"> }
</span><span class="lines">@@ -240,7 +239,7 @@
</span><span class="cx">     int x, y;
</span><span class="cx">     Window rootWindow;
</span><span class="cx">     unsigned int width, height, borderWidth, depth;
</span><del>-    if (!XGetGeometry(m_x11Display, m_window, &amp;rootWindow, &amp;x, &amp;y, &amp;width, &amp;height, &amp;borderWidth, &amp;depth))
</del><ins>+    if (!XGetGeometry(downcast&lt;PlatformDisplayX11&gt;(m_display).native(), m_window, &amp;rootWindow, &amp;x, &amp;y, &amp;width, &amp;height, &amp;borderWidth, &amp;depth))
</ins><span class="cx">         return IntSize();
</span><span class="cx"> 
</span><span class="cx">     return IntSize(width, height);
</span><span class="lines">@@ -254,19 +253,20 @@
</span><span class="cx">     if (glXGetCurrentContext() == m_context.get())
</span><span class="cx">         return true;
</span><span class="cx"> 
</span><ins>+    Display* display = downcast&lt;PlatformDisplayX11&gt;(m_display).native();
</ins><span class="cx">     if (m_window)
</span><del>-        return glXMakeCurrent(m_x11Display, m_window, m_context.get());
</del><ins>+        return glXMakeCurrent(display, m_window, m_context.get());
</ins><span class="cx"> 
</span><span class="cx">     if (m_pbuffer)
</span><del>-        return glXMakeCurrent(m_x11Display, m_pbuffer.get(), m_context.get());
</del><ins>+        return glXMakeCurrent(display, m_pbuffer.get(), m_context.get());
</ins><span class="cx"> 
</span><del>-    return ::glXMakeCurrent(m_x11Display, m_glxPixmap.get(), m_context.get());
</del><ins>+    return ::glXMakeCurrent(display, m_glxPixmap.get(), m_context.get());
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void GLContextGLX::swapBuffers()
</span><span class="cx"> {
</span><span class="cx">     if (m_window)
</span><del>-        glXSwapBuffers(m_x11Display, m_window);
</del><ins>+        glXSwapBuffers(downcast&lt;PlatformDisplayX11&gt;(m_display).native(), m_window);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void GLContextGLX::waitNative()
</span><span class="lines">@@ -276,7 +276,7 @@
</span><span class="cx"> 
</span><span class="cx"> void GLContextGLX::swapInterval(int interval)
</span><span class="cx"> {
</span><del>-    if (!hasSGISwapControlExtension(m_x11Display))
</del><ins>+    if (!hasSGISwapControlExtension(downcast&lt;PlatformDisplayX11&gt;(m_display).native()))
</ins><span class="cx">         return;
</span><span class="cx">     glXSwapIntervalSGI(interval);
</span><span class="cx"> }
</span><span class="lines">@@ -287,7 +287,7 @@
</span><span class="cx">         return m_cairoDevice;
</span><span class="cx"> 
</span><span class="cx"> #if ENABLE(ACCELERATED_2D_CANVAS) &amp;&amp; CAIRO_HAS_GLX_FUNCTIONS
</span><del>-    m_cairoDevice = cairo_glx_device_create(m_x11Display, m_context.get());
</del><ins>+    m_cairoDevice = cairo_glx_device_create(downcast&lt;PlatformDisplayX11&gt;(m_display).native(), m_context.get());
</ins><span class="cx"> #endif
</span><span class="cx"> 
</span><span class="cx">     return m_cairoDevice;
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsglxGLContextGLXh"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.h (210153 => 210154)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.h        2016-12-27 08:04:25 UTC (rev 210153)
+++ releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/glx/GLContextGLX.h        2016-12-27 10:33:25 UTC (rev 210154)
</span><span class="lines">@@ -28,7 +28,6 @@
</span><span class="cx"> typedef unsigned char GLubyte;
</span><span class="cx"> typedef unsigned long Window;
</span><span class="cx"> typedef void* ContextKeyType;
</span><del>-typedef struct _XDisplay Display;
</del><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><span class="lines">@@ -64,7 +63,6 @@
</span><span class="cx">     static std::unique_ptr&lt;GLContextGLX&gt; createPbufferContext(PlatformDisplay&amp;, GLXContext sharingContext = nullptr);
</span><span class="cx">     static std::unique_ptr&lt;GLContextGLX&gt; createPixmapContext(PlatformDisplay&amp;, GLXContext sharingContext = nullptr);
</span><span class="cx"> 
</span><del>-    Display* m_x11Display { nullptr };
</del><span class="cx">     XUniqueGLXContext m_context;
</span><span class="cx">     Window m_window { 0 };
</span><span class="cx">     XUniqueGLXPbuffer m_pbuffer;
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit214SourceWebCoreplatformgraphicsx11PlatformDisplayX11cpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp (210153 => 210154)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp        2016-12-27 08:04:25 UTC (rev 210153)
+++ releases/WebKitGTK/webkit-2.14/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp        2016-12-27 10:33:25 UTC (rev 210154)
</span><span class="lines">@@ -56,10 +56,6 @@
</span><span class="cx"> 
</span><span class="cx"> PlatformDisplayX11::~PlatformDisplayX11()
</span><span class="cx"> {
</span><del>-#if USE(EGL) || USE(GLX)
-    // Clear the sharing context before releasing the display.
-    m_sharingGLContext = nullptr;
-#endif
</del><span class="cx">     if (m_ownedDisplay)
</span><span class="cx">         XCloseDisplay(m_display);
</span><span class="cx"> }
</span></span></pre>
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