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// Copyright 2017 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_ASH_ARC_INSTANCE_THROTTLE_ARC_INSTANCE_THROTTLE_H_
#define CHROME_BROWSER_ASH_ARC_INSTANCE_THROTTLE_ARC_INSTANCE_THROTTLE_H_
#include <memory>
#include <string>
#include <utility>
#include "base/memory/raw_ptr.h"
#include "chromeos/ash/components/throttle/throttle_observer.h"
#include "chromeos/ash/components/throttle/throttle_service.h"
#include "chromeos/ash/experiences/arc/arc_util.h"
#include "chromeos/ash/experiences/arc/metrics/arc_metrics_service.h"
#include "chromeos/ash/experiences/arc/session/connection_observer.h"
#include "components/keyed_service/core/keyed_service.h"
namespace base {
class TimeDelta;
}
namespace content {
class BrowserContext;
}
namespace arc {
class ArcBootPhaseThrottleObserver;
class ArcBridgeService;
namespace mojom {
class PowerInstance;
}
// This class holds a number of observers which watch for several conditions
// (window activation, mojom instance connection, etc) and adjusts the
// throttling state of the ARC container on a change in conditions.
class ArcInstanceThrottle : public KeyedService,
public ash::ThrottleService,
public ConnectionObserver<mojom::PowerInstance>,
public ArcMetricsService::BootTypeObserver {
public:
// The name of the observer which monitors chrome://arc-power-control.
static const char kChromeArcPowerControlPageObserver[];
class Delegate {
public:
Delegate() = default;
virtual ~Delegate() = default;
Delegate(const Delegate&) = delete;
Delegate& operator=(const Delegate&) = delete;
virtual void SetCpuRestriction(CpuRestrictionState cpu_restriction_state,
bool use_quota) = 0;
virtual void RecordCpuRestrictionDisabledUMA(
const std::string& observer_name,
base::TimeDelta delta) = 0;
};
// Returns singleton instance for the given BrowserContext, or nullptr if
// the browser |context| is not allowed to use ARC.
static ArcInstanceThrottle* GetForBrowserContext(
content::BrowserContext* context);
static ArcInstanceThrottle* GetForBrowserContextForTesting(
content::BrowserContext* context);
ArcInstanceThrottle(content::BrowserContext* context,
ArcBridgeService* bridge);
~ArcInstanceThrottle() override;
ArcInstanceThrottle(const ArcInstanceThrottle&) = delete;
ArcInstanceThrottle& operator=(const ArcInstanceThrottle&) = delete;
// KeyedService:
void Shutdown() override;
// ConnectionObserver<mojom::PowerInstance>:
void OnConnectionReady() override;
void set_delegate_for_testing(std::unique_ptr<Delegate> delegate) {
delegate_ = std::move(delegate);
}
// ArcMetricsService::BootTypeObserver
void OnBootTypeRetrieved(mojom::BootType boot_type) override;
static void EnsureFactoryBuilt();
private:
// ash::ThrottleService:
void ThrottleInstance(bool should_throttle) override;
void RecordCpuRestrictionDisabledUMA(const std::string& observer_name,
base::TimeDelta delta) override;
// Notifies CPU resetriction state to power mojom.
void NotifyCpuRestriction(CpuRestrictionState cpu_restriction_state);
ArcBootPhaseThrottleObserver* GetBootObserver();
std::unique_ptr<Delegate> delegate_;
// True if CPU_RESTRICTION_BACKGROUND_WITH_CFS_QUOTA_ENFORCED should never be
// used. By default, CPU quota enforcement is allowed (see the default value
// below), but once one of the following conditions is met, the variable turns
// `true` to completely disable the enforcement feature:
//
// * ARC is unthrottled by a user action (vs for faster boot or ANR
// prevention.)
// * ARC's boot type is 'regular boot' (vs first boot or first boot after AU.)
bool never_enforce_quota_ = false;
// Owned by ArcServiceManager.
const raw_ptr<ArcBridgeService> bridge_;
};
} // namespace arc
#endif // CHROME_BROWSER_ASH_ARC_INSTANCE_THROTTLE_ARC_INSTANCE_THROTTLE_H_
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