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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SERVICES_RESOURCE_COORDINATOR_COORDINATION_UNIT_PROCESS_COORDINATION_UNIT_IMPL_H_
#define SERVICES_RESOURCE_COORDINATOR_COORDINATION_UNIT_PROCESS_COORDINATION_UNIT_IMPL_H_
#include "base/macros.h"
#include "base/optional.h"
#include "base/process/process_handle.h"
#include "base/time/time.h"
#include "services/resource_coordinator/coordination_unit/coordination_unit_base.h"
namespace resource_coordinator {
class FrameCoordinationUnitImpl;
// A process coordination unit follows the lifetime of a RenderProcessHost.
// It may reference zero or one processes at a time, but during its lifetime, it
// may reference more than one process. This can happen if the associated
// renderer crashes, and an associated frame is then reloaded or re-navigated.
// The state of the process CU goes through:
// 1. Created, no PID.
// 2. Process started, have PID - in the case where the associated render
// process fails to start, this state may not occur.
// 3. Process died or falied to start, have exit status.
// 4. Back to 2.
class ProcessCoordinationUnitImpl
: public CoordinationUnitInterface<ProcessCoordinationUnitImpl,
mojom::ProcessCoordinationUnit,
mojom::ProcessCoordinationUnitRequest> {
public:
static CoordinationUnitType Type() { return CoordinationUnitType::kProcess; }
ProcessCoordinationUnitImpl(
const CoordinationUnitID& id,
CoordinationUnitGraph* graph,
std::unique_ptr<service_manager::ServiceKeepaliveRef> keepalive_ref);
~ProcessCoordinationUnitImpl() override;
// mojom::ProcessCoordinationUnit implementation.
void SetCPUUsage(double cpu_usage) override;
void SetExpectedTaskQueueingDuration(base::TimeDelta duration) override;
void SetLaunchTime(base::Time launch_time) override;
void SetMainThreadTaskLoadIsLow(bool main_thread_task_load_is_low) override;
void SetPID(base::ProcessId pid) override;
void SetProcessExitStatus(int32_t exit_status) override;
void OnRendererIsBloated() override;
// Private implementation properties.
void set_private_footprint_kb(uint64_t private_footprint_kb) {
private_footprint_kb_ = private_footprint_kb;
}
uint64_t private_footprint_kb() const { return private_footprint_kb_; }
void set_cumulative_cpu_usage(base::TimeDelta cumulative_cpu_usage) {
cumulative_cpu_usage_ = cumulative_cpu_usage;
}
base::TimeDelta cumulative_cpu_usage() const { return cumulative_cpu_usage_; }
const std::set<FrameCoordinationUnitImpl*>& GetFrameCoordinationUnits() const;
std::set<PageCoordinationUnitImpl*> GetAssociatedPageCoordinationUnits()
const;
base::ProcessId process_id() const { return process_id_; }
base::Time launch_time() const { return launch_time_; }
base::Optional<int32_t> exit_status() const { return exit_status_; }
// Add |frame_cu| to this process.
void AddFrame(FrameCoordinationUnitImpl* frame_cu);
// Removes |frame_cu| from the set of frames hosted by this process. Invoked
// from the destructor of FrameCoordinationUnitImpl.
void RemoveFrame(FrameCoordinationUnitImpl* frame_cu);
// Invoked when the state of a frame hosted by this process changes.
void OnFrameLifecycleStateChanged(FrameCoordinationUnitImpl* frame_cu,
mojom::LifecycleState old_state);
private:
// CoordinationUnitInterface implementation.
void OnEventReceived(mojom::Event event) override;
void OnPropertyChanged(mojom::PropertyType property_type,
int64_t value) override;
void DecrementNumFrozenFrames();
void IncrementNumFrozenFrames();
base::TimeDelta cumulative_cpu_usage_;
uint64_t private_footprint_kb_ = 0u;
base::ProcessId process_id_ = base::kNullProcessId;
base::Time launch_time_;
base::Optional<int32_t> exit_status_;
std::set<FrameCoordinationUnitImpl*> frame_coordination_units_;
// The number of frames hosted by this process that are frozen.
int num_frozen_frames_ = 0;
DISALLOW_COPY_AND_ASSIGN(ProcessCoordinationUnitImpl);
};
} // namespace resource_coordinator
#endif // SERVICES_RESOURCE_COORDINATOR_COORDINATION_UNIT_PROCESS_COORDINATION_UNIT_IMPL_H_