Defer window destruction until GPU finished drawing.

chrome/browser/gpu_process_host.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/gpu_process_host.h"
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/thread.h"
@@ skipping 153 matching lines @@
 GpuProcessHost::SynchronizationRequest::~SynchronizationRequest() {}
 
 void GpuProcessHost::OnControlMessageReceived(const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
 
   IPC_BEGIN_MESSAGE_MAP(GpuProcessHost, message)
     IPC_MESSAGE_HANDLER(GpuHostMsg_ChannelEstablished, OnChannelEstablished)
     IPC_MESSAGE_HANDLER(GpuHostMsg_SynchronizeReply, OnSynchronizeReply)
 #if defined(OS_LINUX)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_GetViewXID, OnGetViewXID)
+    IPC_MESSAGE_HANDLER(GpuHostMsg_ReleaseXID, OnReleaseXID)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_ResizeXID, OnResizeXID)
 #elif defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceSetIOSurface,
                         OnAcceleratedSurfaceSetIOSurface)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
                         OnAcceleratedSurfaceBuffersSwapped)
 #elif defined(OS_WIN)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_CreateCompositorHostWindow,
                                     OnCreateCompositorHostWindow)
 #endif
@@ skipping 37 matching lines @@
   }
 
   GpuHostMsg_GetViewXID::WriteReplyParams(reply_msg, xid);
 
   // Have to reply from IO thread.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableFunction(&SendDelayedReply, reply_msg));
 }
 
+void ReleaseXIDDispatcher(unsigned long xid) {
+  GtkNativeViewManager* manager = Singleton<GtkNativeViewManager>::get();
+  manager->ReleasePermanentXID(xid);
+}
+
 void ResizeXIDDispatcher(unsigned long xid, gfx::Size size,
     IPC::Message *reply_msg) {
   GdkWindow* window = reinterpret_cast<GdkWindow*>(gdk_xid_table_lookup(xid));
   if (window) {
     Display* display = GDK_WINDOW_XDISPLAY(window);
     gdk_window_resize(window, size.width(), size.height());
     XSync(display, False);
   }
 
   GpuHostMsg_ResizeXID::WriteReplyParams(reply_msg, (window != NULL));
 
   // Have to reply from IO thread.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableFunction(&SendDelayedReply, reply_msg));
 }
 
 }  // namespace
 
 void GpuProcessHost::OnGetViewXID(gfx::NativeViewId id,
                                   IPC::Message *reply_msg) {
   // Have to request a permanent XID from UI thread.
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       NewRunnableFunction(&GetViewXIDDispatcher, id, reply_msg));
 }
 
+void GpuProcessHost::OnReleaseXID(unsigned long xid) {
+  // Have to release a permanent XID from UI thread.
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      NewRunnableFunction(&ReleaseXIDDispatcher, xid));
+}
+
 void GpuProcessHost::OnResizeXID(unsigned long xid, gfx::Size size,
                                  IPC::Message *reply_msg) {
   // Have to resize the window from UI thread.
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       NewRunnableFunction(&ResizeXIDDispatcher, xid, size, reply_msg));
 }
 
 #elif defined(OS_MACOSX)
 
@@ skipping 230 matching lines @@
       false,  // Never use the zygote (GPU plugin can't be sandboxed).
       base::environment_vector(),
 #endif
       cmd_line);
 
   UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
                             kLaunched, kGPUProcessLifetimeEvent_Max);
   return true;
 }