NOCOMMIT prototype: GRC service plumbing and process priority

services/resource_coordinator/coordination_unit.h

+// 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_H_
+#define SERVICES_RESOURCE_COORDINATOR_COORDINATION_UNIT_H_
+
+#include <list>
+
+#include "base/optional.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "services/resource_coordinator/public/interfaces/coordination_unit.mojom.h"
+#include "services/resource_coordinator/public/interfaces/coordination_unit_provider.mojom.h"
+#include "services/service_manager/public/cpp/connection.h"
+
+namespace resource_coordinator {
+
+class CoordinationUnit : public mojom::CoordinationUnit {
+ public:
+  CoordinationUnit(mojom::CoordinationUnitIDPtr options);
+  ~CoordinationUnit() override;
+
+  // Overridden from mojom::CoordinationUnit:
+  void SendEvent(mojom::EventPtr event) override;
+  void GetID(const GetIDCallback& callback) override;
+  void Duplicate(mojom::CoordinationUnitRequest request) override;
+  void AddChild(mojom::CoordinationUnitIDPtr child_id) override;
+  void SetPolicyCallback(mojom::PolicyCallbackPtr callback) override;
+
+ private:
+  bool AddChild(CoordinationUnit* child);
+  void RemoveChild(CoordinationUnit* child);
+  void AddParent(CoordinationUnit* parent);
+  void RemoveParent(CoordinationUnit* parent);
+  void RecalcPolicy();
+  void UnregisterPolicyCallback();
+
+  enum StateFlags : uint8_t { TAB_VISIBLE, AUDIO_PLAYING, NUM_STATE_FLAGS };
+  bool SelfOrParentHasFlagSet(StateFlags state);
+
+  mojo::BindingSet<mojom::CoordinationUnit> bindings_;
+  mojom::IDType type_;
+  std::string id_;
+  int64_t id_hash_;
+  std::set<CoordinationUnit*> children_;
+  std::set<CoordinationUnit*> parents_;
+
+  mojom::PolicyCallbackPtr policy_callback_;
+  mojom::PolicyPtr current_policy_;
+
+  base::Optional<bool> state_flags_[NUM_STATE_FLAGS];
+
+  DISALLOW_COPY_AND_ASSIGN(CoordinationUnit);
+};
+
+}  // namespace resource_coordinator
+
+#endif  // SERVICES_RESOURCE_COORDINATOR_COORDINATION_UNIT_H_