components/keyed_service/core/keyed_service_base_factory.cc

// Copyright 2014 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.

#include "components/keyed_service/core/keyed_service_base_factory.h"

#include "base/supports_user_data.h"
#include "base/trace_event/trace_event.h"
#include "components/keyed_service/core/dependency_manager.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/pref_service.h"

KeyedServiceBaseFactory::KeyedServiceBaseFactory(const char* service_name,
                                                 DependencyManager* manager)
    : dependency_manager_(manager), service_name_(service_name) {
  dependency_manager_->AddComponent(this);
}

KeyedServiceBaseFactory::~KeyedServiceBaseFactory() {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  dependency_manager_->RemoveComponent(this);
}

void KeyedServiceBaseFactory::DependsOn(KeyedServiceBaseFactory* rhs) {
  dependency_manager_->AddEdge(rhs, this);
}

void KeyedServiceBaseFactory::AssertContextWasntDestroyed(
    base::SupportsUserData* context) const {
  // TODO(crbug.com/701326): We should DCHECK(CalledOnValidThread()) here, but
  // currently some code doesn't do service getting on the main thread.
  // This needs to be fixed and DCHECK should be restored here.
  dependency_manager_->AssertContextWasntDestroyed(context);
}

void KeyedServiceBaseFactory::MarkContextLive(base::SupportsUserData* context) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  dependency_manager_->MarkContextLive(context);
}

bool KeyedServiceBaseFactory::ServiceIsCreatedWithContext() const {
  return false;
}

bool KeyedServiceBaseFactory::ServiceIsNULLWhileTesting() const {
  return false;
}

void KeyedServiceBaseFactory::ContextDestroyed(
    base::SupportsUserData* context) {
  // While object destruction can be customized in ways where the object is
  // only dereferenced, this still must run on the UI thread.
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}