chromium/chrome/browser/performance_manager/policies/working_set_trimmer_policy.cc

// Copyright 2019 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/performance_manager/policies/working_set_trimmer_policy.h"

#include "base/time/time.h"
#include "build/build_config.h"

#include "base/metrics/histogram_macros.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/performance_manager/mechanisms/working_set_trimmer.h"
#include "components/performance_manager/graph/graph_impl.h"
#include "components/performance_manager/graph/process_node_impl.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/node_attached_data.h"
#include "components/performance_manager/public/graph/node_data_describer_registry.h"
#include "components/performance_manager/public/graph/process_node.h"
#if BUILDFLAG(IS_CHROMEOS_ASH)
#include "chrome/browser/performance_manager/policies/working_set_trimmer_policy_chromeos.h"
#endif

namespace performance_manager {
namespace policies {

namespace {

class WorkingSetTrimData
    : public ExternalNodeAttachedDataImpl<WorkingSetTrimData> { … };

const char kDescriberName[] = …;

}  // namespace

WorkingSetTrimmerPolicy::WorkingSetTrimmerPolicy() = default;
WorkingSetTrimmerPolicy::~WorkingSetTrimmerPolicy() = default;

void WorkingSetTrimmerPolicy::OnPassedToGraph(Graph* graph) { … }

void WorkingSetTrimmerPolicy::OnTakenFromGraph(Graph* graph) { … }

void WorkingSetTrimmerPolicy::OnAllFramesInProcessFrozen(
    const ProcessNode* process_node) { … }

void WorkingSetTrimmerPolicy::RegisterObservers(Graph* graph) { … }

void WorkingSetTrimmerPolicy::UnregisterObservers(Graph* graph) { … }

base::TimeTicks WorkingSetTrimmerPolicy::GetLastTrimTime(
    const ProcessNode* process_node) { … }

void WorkingSetTrimmerPolicy::SetLastTrimTimeNow(
    const ProcessNode* process_node) { … }

void WorkingSetTrimmerPolicy::SetLastTrimTime(const ProcessNode* process_node,
                                              base::TimeTicks time) { … }

void WorkingSetTrimmerPolicy::TrimWorkingSet(const ProcessNode* process_node) { … }

base::Value::Dict WorkingSetTrimmerPolicy::DescribeProcessNodeData(
    const ProcessNode* node) const { … }

// static
bool WorkingSetTrimmerPolicy::PlatformSupportsWorkingSetTrim() { … }

// static
std::unique_ptr<WorkingSetTrimmerPolicy>
WorkingSetTrimmerPolicy::CreatePolicyForPlatform() { … }

}  // namespace policies
}  // namespace performance_manager