Cleanup GpuMemoryBuffer

content/common/gpu/client/gpu_channel_host.cc

 // Copyright (c) 2012 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 "content/common/gpu/client/gpu_channel_host.h"
 
 #include <algorithm>
 
+#include "base/barrier_closure.h"
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/common/gpu/client/command_buffer_proxy_impl.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "url/gurl.h"
@@ skipping 293 matching lines @@
 }
 
 int32 GpuChannelHost::ReserveImageId() {
   return next_image_id_.GetNext();
 }
 
 int32 GpuChannelHost::GenerateRouteID() {
   return next_route_id_.GetNext();
 }
 
+void GpuChannelHost::WaitForPendingGpuMemoryBufferUsageToComplete(
+    const base::Closure& callback) {
+  base::Closure proxy_barrier_closure =
+      base::BarrierClosure(proxies_.size(), callback);
+
+  AutoLock lock(context_lock_);
+  for (ProxyMap::iterator it = proxies_.begin(); it != proxies_.end(); it++) {
+    it->second->WaitForPendingGpuMemoryBufferUsageToComplete(
+        proxy_barrier_closure);
+  }
+}
+
 GpuChannelHost::~GpuChannelHost() {
   // channel_ must be destroyed on the main thread.
   if (!factory_->IsMainThread())
     factory_->GetMainLoop()->DeleteSoon(FROM_HERE, channel_.release());
 }
 
 
 GpuChannelHost::MessageFilter::MessageFilter()
     : lost_(false) {
 }
@@ skipping 59 matching lines @@
 
   listeners_.clear();
 }
 
 bool GpuChannelHost::MessageFilter::IsLost() const {
   AutoLock lock(lock_);
   return lost_;
 }
 
 }  // namespace content