| // 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. |
| |
| #include "chromeos/dbus/blocking_method_caller.h" |
| |
| #include "base/bind.h" |
| #include "base/callback_helpers.h" |
| #include "base/location.h" |
| #include "base/task_runner.h" |
| #include "base/threading/thread_restrictions.h" |
| #include "dbus/bus.h" |
| #include "dbus/object_proxy.h" |
| |
| namespace chromeos { |
| |
| namespace { |
| |
| // This function is a part of CallMethodAndBlock implementation. |
| void CallMethodAndBlockInternal( |
| scoped_ptr<dbus::Response>* response, |
| base::ScopedClosureRunner* signaler, |
| dbus::ObjectProxy* proxy, |
| dbus::MethodCall* method_call) { |
| *response = proxy->CallMethodAndBlock( |
| method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT); |
| } |
| |
| } // namespace |
| |
| BlockingMethodCaller::BlockingMethodCaller(dbus::Bus* bus, |
| dbus::ObjectProxy* proxy) |
| : bus_(bus), |
| proxy_(proxy), |
| on_blocking_method_call_(false /* manual_reset */, |
| false /* initially_signaled */) { |
| } |
| |
| BlockingMethodCaller::~BlockingMethodCaller() { |
| } |
| |
| scoped_ptr<dbus::Response> BlockingMethodCaller::CallMethodAndBlock( |
| dbus::MethodCall* method_call) { |
| // on_blocking_method_call_->Signal() will be called when |signaler| is |
| // destroyed. |
| base::Closure signal_task( |
| base::Bind(&base::WaitableEvent::Signal, |
| base::Unretained(&on_blocking_method_call_))); |
| base::ScopedClosureRunner* signaler = |
| new base::ScopedClosureRunner(signal_task); |
| |
| scoped_ptr<dbus::Response> response; |
| bus_->GetDBusTaskRunner()->PostTask( |
| FROM_HERE, |
| base::Bind(&CallMethodAndBlockInternal, |
| &response, |
| base::Owned(signaler), |
| base::Unretained(proxy_), |
| method_call)); |
| // http://crbug.com/125360 |
| base::ThreadRestrictions::ScopedAllowWait allow_wait; |
| on_blocking_method_call_.Wait(); |
| return response.Pass(); |
| } |
| |
| } // namespace chromeos |