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// 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 "components/memory_pressure/system_memory_pressure_evaluator.h"
#include <memory>
#include <utility>
#include "base/feature_list.h"
#include "build/build_config.h"
#if BUILDFLAG(IS_FUCHSIA)
#include "components/memory_pressure/system_memory_pressure_evaluator_fuchsia.h"
#elif BUILDFLAG(IS_APPLE)
#include "components/memory_pressure/system_memory_pressure_evaluator_mac.h"
#elif BUILDFLAG(IS_WIN)
#include "components/memory_pressure/system_memory_pressure_evaluator_win.h"
#endif
namespace memory_pressure {
const base::TimeDelta SystemMemoryPressureEvaluator::kRenotifyVotePeriod =
base::Seconds(5);
// static
std::unique_ptr<SystemMemoryPressureEvaluator>
SystemMemoryPressureEvaluator::CreateDefaultSystemEvaluator(
MultiSourceMemoryPressureMonitor* monitor) {
#if BUILDFLAG(IS_FUCHSIA)
return std::make_unique<
memory_pressure::SystemMemoryPressureEvaluatorFuchsia>(
monitor->CreateVoter());
#elif BUILDFLAG(IS_APPLE)
return std::make_unique<memory_pressure::mac::SystemMemoryPressureEvaluator>(
monitor->CreateVoter());
#elif BUILDFLAG(IS_WIN)
auto evaluator =
std::make_unique<memory_pressure::win::SystemMemoryPressureEvaluator>(
monitor->CreateVoter());
return evaluator;
#else
// Chrome OS and Chromecast evaluators are created in separate components.
return nullptr;
#endif
}
SystemMemoryPressureEvaluator::SystemMemoryPressureEvaluator(
std::unique_ptr<MemoryPressureVoter> voter)
: current_vote_(base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
voter_(std::move(voter)) {}
SystemMemoryPressureEvaluator::~SystemMemoryPressureEvaluator() = default;
void SystemMemoryPressureEvaluator::SetCurrentVote(
base::MemoryPressureListener::MemoryPressureLevel level) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
current_vote_ = level;
}
void SystemMemoryPressureEvaluator::SendCurrentVote(bool notify) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
voter_->SetVote(current_vote_, notify);
}
} // namespace memory_pressure
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