| // Copyright 2016 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 CONTENT_COMMON_SERVICE_MANAGER_EMBEDDED_SERVICE_RUNNER_H_ |
| #define CONTENT_COMMON_SERVICE_MANAGER_EMBEDDED_SERVICE_RUNNER_H_ |
| |
| #include <memory> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/strings/string_piece.h" |
| #include "content/public/common/service_info.h" |
| #include "services/service_manager/public/cpp/service.h" |
| #include "services/service_manager/public/interfaces/service.mojom.h" |
| |
| namespace content { |
| |
| // Hosts an in-process service instance that supports multiple Service |
| // connections. The first incoming connection will invoke a provided factory |
| // function to instantiate the service, and the service will automatically be |
| // torn down when its last connection is lost. The service may be launched and |
| // torn down multiple times by a single EmbeddedServiceRunner instance. |
| class EmbeddedServiceRunner { |
| public: |
| // Constructs a runner which hosts a service. If an existing instance of the |
| // service is not running when an incoming connection is made, details from |
| // |info| will be used to construct a new instance. |
| EmbeddedServiceRunner(const base::StringPiece& name, |
| const ServiceInfo& info); |
| ~EmbeddedServiceRunner(); |
| |
| // Binds an incoming ServiceRequest for this service. If the service isn't |
| // already running, it is started. Otherwise the request is bound to the |
| // running instance. |
| void BindServiceRequest(service_manager::mojom::ServiceRequest request); |
| |
| // Sets a callback to run after the service loses its last connection and is |
| // torn down. |
| void SetQuitClosure(const base::Closure& quit_closure); |
| |
| private: |
| class Instance; |
| |
| void OnQuit(); |
| |
| // A reference to the service instance which may operate on the |
| // |task_runner_|'s thread. |
| scoped_refptr<Instance> instance_; |
| |
| base::Closure quit_closure_; |
| |
| base::WeakPtrFactory<EmbeddedServiceRunner> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(EmbeddedServiceRunner); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_COMMON_SERVICE_MANAGER_EMBEDDED_SERVICE_RUNNER_H_ |