15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/callback.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/synchronization/waitable_event.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chromeos/chromeos_export.h" 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "dbus/message.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace dbus { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Bus; 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ObjectProxy; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace dbus 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace chromeos { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A utility class to call D-Bus methods in a synchronous (blocking) way. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note: Blocking the thread until it returns is not a good idea in most cases. 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Avoid using this class as hard as you can. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class CHROMEOS_EXPORT BlockingMethodCaller { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BlockingMethodCaller(dbus::Bus* bus, dbus::ObjectProxy* proxy); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~BlockingMethodCaller(); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Calls the method and blocks until it returns. 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<dbus::Response> CallMethodAndBlock(dbus::MethodCall* method_call); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dbus::Bus* bus_; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dbus::ObjectProxy* proxy_; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::WaitableEvent on_blocking_method_call_; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(BlockingMethodCaller); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace chromeos 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CHROMEOS_DBUS_BLOCKING_METHOD_CALLER_H_ 44