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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/performance_controls/memory_saver_utils.h"
#include "base/check_op.h"
#include "base/containers/contains.h"
#include "chrome/browser/performance_manager/public/user_tuning/user_performance_tuning_manager.h"
#include "components/performance_manager/public/user_tuning/prefs.h"
#include "content/public/common/url_constants.h"
namespace memory_saver {
bool IsURLSupported(GURL url) {
return !url.SchemeIs(content::kChromeUIScheme);
}
std::optional<::mojom::LifecycleUnitDiscardReason> GetDiscardReason(
content::WebContents* contents) {
auto* pre_discard_resource_usage =
performance_manager::user_tuning::UserPerformanceTuningManager::
PreDiscardResourceUsage::FromWebContents(contents);
return pre_discard_resource_usage == nullptr
? std::nullopt
: std::make_optional<::mojom::LifecycleUnitDiscardReason>(
pre_discard_resource_usage->discard_reason());
}
int64_t GetDiscardedMemorySavingsInBytes(content::WebContents* contents) {
const auto* const pre_discard_resource_usage =
performance_manager::user_tuning::UserPerformanceTuningManager::
PreDiscardResourceUsage::FromWebContents(contents);
if (pre_discard_resource_usage == nullptr) {
return 0;
} else {
CHECK(pre_discard_resource_usage->memory_footprint_estimate_kb() >= 0);
return pre_discard_resource_usage->memory_footprint_estimate_kb() * 1024;
}
}
} // namespace memory_saver
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