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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/performance_manager/public/freezing/freezing.h"
#include "base/check_deref.h"
#include "components/performance_manager/freezing/freezing_policy.h"
#include "components/performance_manager/public/performance_manager.h"
namespace performance_manager::freezing {
FreezingVote::FreezingVote(content::WebContents* web_contents)
: page_node_(
PerformanceManager::GetPrimaryPageNodeForWebContents(web_contents)) {
CHECK(page_node_);
// Balanced with `RemoveFreezeVote()` in destructor.
auto* freezing_policy =
PerformanceManager::GetGraph()->GetRegisteredObjectAs<FreezingPolicy>();
CHECK_DEREF(freezing_policy).AddFreezeVote(page_node_.get());
}
FreezingVote::~FreezingVote() {
if (!page_node_) {
// No-op if the `PageNode` no longer exists.
return;
}
auto* freezing_policy =
PerformanceManager::GetGraph()->GetRegisteredObjectAs<FreezingPolicy>();
CHECK_DEREF(freezing_policy).RemoveFreezeVote(page_node_.get());
}
CanFreezeDetails::CanFreezeDetails() = default;
CanFreezeDetails::~CanFreezeDetails() = default;
CanFreezeDetails::CanFreezeDetails(CanFreezeDetails&&) = default;
CanFreezeDetails& CanFreezeDetails::operator=(CanFreezeDetails&&) = default;
CanFreezeDetails GetCanFreezeDetailsForPageNode(const PageNode* page_node) {
auto* freezing_policy =
performance_manager::FreezingPolicy::GetFromGraph(page_node->GetGraph());
CHECK(freezing_policy);
return freezing_policy->GetCanFreezeDetails(page_node);
}
Discarder::Discarder() = default;
Discarder::~Discarder() = default;
} // namespace performance_manager::freezing
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