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- // Copyright 2020 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 "ash/hud_display/graphs_container_view.h"
- #include <numeric>
- #include "ash/hud_display/cpu_graph_page_view.h"
- #include "ash/hud_display/fps_graph_page_view.h"
- #include "ash/hud_display/hud_constants.h"
- #include "ash/hud_display/memory_graph_page_view.h"
- #include "base/bind.h"
- #include "base/task/thread_pool.h"
- #include "base/threading/thread_task_runner_handle.h"
- #include "ui/base/metadata/metadata_impl_macros.h"
- #include "ui/views/layout/fill_layout.h"
- namespace ash {
- namespace hud_display {
- namespace {
- // UI refresh interval.
- constexpr base::TimeDelta kGraphsDataRefreshInterval = base::Milliseconds(500);
- void GetDataSnapshotOnThreadPool(DataSource* data_source,
- DataSource::Snapshot* out_snapshot) {
- // This is run on the ThreadPool.
- *out_snapshot = data_source->GetSnapshotAndReset();
- }
- } // namespace
- ////////////////////////////////////////////////////////////////////////////////
- // GraphsContainerView, public:
- BEGIN_METADATA(GraphsContainerView, views::View)
- END_METADATA
- GraphsContainerView::GraphsContainerView()
- : start_time_(base::TimeTicks::Now()),
- file_task_runner_(base::ThreadPool::CreateSequencedTaskRunner(
- {base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN})),
- data_source_(new DataSource,
- base::OnTaskRunnerDeleter(file_task_runner_)) {
- DCHECK_CALLED_ON_VALID_SEQUENCE(ui_sequence_checker_);
- // Make all graph pages take the whole view and make sure that only one
- // is shown at a time.
- SetLayoutManager(std::make_unique<views::FillLayout>());
- // Adds another graphs page.
- AddChildView(
- std::make_unique<MemoryGraphPageView>(kGraphsDataRefreshInterval))
- ->SetID(static_cast<int>(HUDDisplayMode::MEMORY));
- AddChildView(std::make_unique<CpuGraphPageView>(kGraphsDataRefreshInterval))
- ->SetID(static_cast<int>(HUDDisplayMode::CPU));
- AddChildView(std::make_unique<FPSGraphPageView>(kGraphsDataRefreshInterval))
- ->SetID(static_cast<int>(HUDDisplayMode::FPS));
- RequestDataUpdate();
- }
- GraphsContainerView::~GraphsContainerView() {
- DCHECK_CALLED_ON_VALID_SEQUENCE(ui_sequence_checker_);
- }
- void GraphsContainerView::RequestDataUpdate() {
- std::unique_ptr<DataSource::Snapshot> snapshot_container =
- std::make_unique<DataSource::Snapshot>();
- DataSource::Snapshot* snapshot = snapshot_container.get();
- file_task_runner_->PostTaskAndReply(
- FROM_HERE,
- base::BindOnce(&GetDataSnapshotOnThreadPool,
- base::Unretained(data_source_.get()), snapshot),
- base::BindOnce(&GraphsContainerView::UpdateData,
- weak_factory_.GetWeakPtr(),
- std::move(snapshot_container)));
- }
- void GraphsContainerView::UpdateData(
- std::unique_ptr<DataSource::Snapshot> snapshot) {
- // Adjust for any missing data.
- const off_t expected_updates =
- (base::TimeTicks::Now() - start_time_) / kGraphsDataRefreshInterval;
- const unsigned intervals =
- expected_updates > static_cast<off_t>(data_update_count_)
- ? expected_updates - data_update_count_
- : 1;
- data_update_count_ += intervals;
- for (auto* child : children()) {
- // Insert missing points.
- for (unsigned j = 0; j < intervals; ++j)
- static_cast<GraphPageViewBase*>(child)->UpdateData(*snapshot);
- }
- SchedulePaint();
- const base::TimeTicks next_start_time =
- start_time_ + kGraphsDataRefreshInterval * data_update_count_;
- const base::TimeTicks now = base::TimeTicks::Now();
- if (next_start_time <= now) {
- RequestDataUpdate();
- } else {
- base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
- FROM_HERE,
- base::BindOnce(&GraphsContainerView::RequestDataUpdate,
- weak_factory_.GetWeakPtr()),
- next_start_time - now);
- }
- }
- void GraphsContainerView::SetMode(HUDDisplayMode mode) {
- auto* selected = GetViewByID(static_cast<int>(mode));
- if (!selected) {
- DCHECK(selected);
- return;
- }
- for (auto* child : children())
- child->SetVisible(false);
- selected->SetVisible(true);
- }
- } // namespace hud_display
- } // namespace ash
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