| // Copyright (c) 2012 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 CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ |
| #define CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "chromeos/chromeos_export.h" |
| #include "dbus/message.h" |
| |
| namespace dbus { |
| |
| class Bus; |
| class ObjectProxy; |
| class ScopedDBusError; |
| |
| } // namespace dbus |
| |
| namespace chromeos { |
| |
| // A utility class to call D-Bus methods in a synchronous (blocking) way. |
| // Note: Blocking the thread until it returns is not a good idea in most cases. |
| // Avoid using this class as hard as you can. |
| class CHROMEOS_EXPORT BlockingMethodCaller { |
| public: |
| BlockingMethodCaller(dbus::Bus* bus, dbus::ObjectProxy* proxy); |
| virtual ~BlockingMethodCaller(); |
| |
| // Calls the method and blocks until it returns. |
| std::unique_ptr<dbus::Response> CallMethodAndBlock( |
| dbus::MethodCall* method_call); |
| |
| // Calls the method and blocks until it returns. Populates the |error| and |
| // returns null in case of an error. |
| std::unique_ptr<dbus::Response> CallMethodAndBlockWithError( |
| dbus::MethodCall* method_call, |
| dbus::ScopedDBusError* error_out); |
| |
| private: |
| dbus::Bus* bus_; |
| dbus::ObjectProxy* proxy_; |
| base::WaitableEvent on_blocking_method_call_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BlockingMethodCaller); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ |