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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_TAB_HELPER_H_
#define CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_TAB_HELPER_H_
#include "base/byte_count.h"
#include "chrome/browser/ui/tabs/contents_observing_tab_feature.h"
#include "components/performance_manager/public/features.h"
namespace tabs {
class TabFeatures;
class TabInterface;
} // namespace tabs
class TabResourceUsage : public base::RefCounted<TabResourceUsage> {
public:
// Threshold was selected based on the 99th percentile of tab memory usage.
static constexpr base::ByteCount kHighMemoryUsageThreshold = base::MiB(800);
TabResourceUsage();
base::ByteCount memory_usage() const { return memory_usage_; }
void SetMemoryUsage(base::ByteCount memory_usage);
bool is_high_memory_usage() const { return is_high_memory_usage_; }
private:
friend class base::RefCounted<TabResourceUsage>;
~TabResourceUsage() = default;
base::ByteCount memory_usage_;
bool is_high_memory_usage_ = false;
};
// Per-tab class to keep track of current memory usage for each tab.
class TabResourceUsageTabHelper : public tabs::ContentsObservingTabFeature {
public:
explicit TabResourceUsageTabHelper(tabs::TabInterface& contents);
~TabResourceUsageTabHelper() override;
// content::WebContentsObserver
void PrimaryPageChanged(content::Page& page) override;
base::ByteCount GetMemoryUsage();
void SetMemoryUsage(base::ByteCount memory_usage);
scoped_refptr<const TabResourceUsage> resource_usage() const;
private:
friend class tabs::TabFeatures;
scoped_refptr<TabResourceUsage> resource_usage_;
};
#endif // CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_TAB_HELPER_H_
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