cc/base/swap_promise_monitor.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/logging.h"
   6 #include "cc/base/swap_promise_monitor.h"
   7 #include "cc/trees/layer_tree_host.h"
   8 #include "cc/trees/layer_tree_host_impl.h"
   9
  10 namespace cc {
  11
  12 SwapPromiseMonitor::SwapPromiseMonitor(LayerTreeHost* layer_tree_host,
  13                                        LayerTreeHostImpl* layer_tree_host_impl)
  14     : layer_tree_host_(layer_tree_host),
  15       layer_tree_host_impl_(layer_tree_host_impl) {
  16   DCHECK((layer_tree_host && !layer_tree_host_impl) ||
  17          (!layer_tree_host && layer_tree_host_impl));
  18   if (layer_tree_host_)
  19     layer_tree_host_->InsertSwapPromiseMonitor(this);
  20   if (layer_tree_host_impl_)
  21     layer_tree_host_impl_->InsertSwapPromiseMonitor(this);
  22 }
  23
  24 SwapPromiseMonitor::~SwapPromiseMonitor() {
  25   if (layer_tree_host_)
  26     layer_tree_host_->RemoveSwapPromiseMonitor(this);
  27   if (layer_tree_host_impl_)
  28     layer_tree_host_impl_->RemoveSwapPromiseMonitor(this);
  29 }
  30
  31 }  // namespace cc