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33 lines
883 B
C++
33 lines
883 B
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/common/layer_tree_holder.h"
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namespace flutter {
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LayerTreeHolder::LayerTreeHolder() = default;
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LayerTreeHolder::~LayerTreeHolder() = default;
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std::unique_ptr<LayerTree> LayerTreeHolder::Pop() {
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std::scoped_lock lock(layer_tree_mutex);
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return std::move(layer_tree_);
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}
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void LayerTreeHolder::PushIfNewer(
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std::unique_ptr<LayerTree> proposed_layer_tree) {
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std::scoped_lock lock(layer_tree_mutex);
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if (!layer_tree_ ||
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layer_tree_->target_time() < proposed_layer_tree->target_time()) {
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layer_tree_ = std::move(proposed_layer_tree);
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}
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}
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bool LayerTreeHolder::IsEmpty() const {
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std::scoped_lock lock(layer_tree_mutex);
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return !layer_tree_;
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}
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}; // namespace flutter
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