chromium/components/performance_manager/graph/policies/process_priority_policy.h

// 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.

#ifndef COMPONENTS_PERFORMANCE_MANAGER_GRAPH_POLICIES_PROCESS_PRIORITY_POLICY_H_
#define COMPONENTS_PERFORMANCE_MANAGER_GRAPH_POLICIES_PROCESS_PRIORITY_POLICY_H_

#include "base/functional/callback.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/process_node.h"
#include "components/performance_manager/public/render_process_host_proxy.h"

namespace performance_manager {
namespace policies {

// Policy that observes priority changes on ProcessNodes, and applies these
// to the actual processes via RenderProcessHost::SetPriorityOverride. There
// is no need for more than one of these to be instantiated at a time (enforced
// by a DCHECK). This policy expects to be attached to an empty graph (also
// enforced by a DCHECK).
class ProcessPriorityPolicy : public GraphOwned,
                              public ProcessNode::ObserverDefaultImpl { … };

}  // namespace policies
}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_GRAPH_POLICIES_PROCESS_PRIORITY_POLICY_H_