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73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
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* \brief Client-side input session interface
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* \author Norman Feske
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* \date 2006-08-16
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*/
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/*
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* Copyright (C) 2006-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__INPUT_SESSION__CLIENT_H_
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#define _INCLUDE__INPUT_SESSION__CLIENT_H_
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#include <input_session/capability.h>
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#include <input/event.h>
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#include <base/attached_dataspace.h>
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#include <base/rpc_client.h>
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namespace Input { struct Session_client; }
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class Input::Session_client : public Genode::Rpc_client<Session>
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{
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private:
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Genode::Attached_dataspace _event_ds;
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Genode::size_t const _max_events =
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_event_ds.size() / sizeof(Input::Event);
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friend class Input::Binding;
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public:
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Session_client(Genode::Region_map &local_rm, Session_capability session)
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:
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Genode::Rpc_client<Session>(session),
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_event_ds(local_rm, call<Rpc_dataspace>())
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{ }
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Genode::Dataspace_capability dataspace() override {
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return call<Rpc_dataspace>(); }
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bool pending() const override {
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return call<Rpc_pending>(); }
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int flush() override {
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return call<Rpc_flush>(); }
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void sigh(Genode::Signal_context_capability sigh) override {
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call<Rpc_sigh>(sigh); }
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/**
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* Flush and apply functor to pending events
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*
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* \param fn functor in the form of f(Event const &e)
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* \return number of events processed
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*/
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void for_each_event(auto const &fn)
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{
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Genode::size_t const n = Genode::min((Genode::size_t)call<Rpc_flush>(), _max_events);
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Event const *ev_buf = _event_ds.local_addr<const Event>();
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for (Genode::size_t i = 0; i < n; ++i)
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fn(ev_buf[i]);
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}
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};
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#endif /* _INCLUDE__INPUT_SESSION__CLIENT_H_ */
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