ba2b0b8360
This patch also updates os/slave.h because the app/launcher cannot be reasonably updated without it. Issue #1987 Issue #3125
120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
/*
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* \brief Slave used for toggling the visibility of a nitpicker session
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* \author Norman Feske
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* \date 2014-09-30
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*/
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/*
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* Copyright (C) 2014-2017 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 _NIT_FADER_SLAVE_H_
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#define _NIT_FADER_SLAVE_H_
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/* Genode includes */
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#include <os/static_parent_services.h>
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#include <os/slave.h>
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#include <nitpicker_session/nitpicker_session.h>
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/* local includes */
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#include <types.h>
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namespace Launcher { class Nit_fader_slave; }
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class Launcher::Nit_fader_slave
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{
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private:
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struct Policy_base
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{
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Genode::Static_parent_services<Genode::Cpu_session,
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Genode::Pd_session,
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Genode::Rom_session,
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Genode::Log_session,
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Timer::Session>
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_parent_services;
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Policy_base(Env &env) : _parent_services(env) { }
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};
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class Policy : Policy_base, public Slave::Policy
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{
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private:
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Genode::Service &_nitpicker_service;
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protected:
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static Name _name() { return "nit_fader"; }
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static Genode::Ram_quota _quota() { return { 2*1024*1024 }; }
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static Genode::Cap_quota _caps() { return { 50 }; }
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public:
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Policy(Env &env,
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Rpc_entrypoint &ep,
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Genode::Service &nitpicker_service)
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:
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Policy_base(env),
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Genode::Slave::Policy(env, _name(), _name(),
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Policy_base::_parent_services,
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ep, _caps(), _quota()),
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_nitpicker_service(nitpicker_service)
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{
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visible(false);
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}
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void visible(bool visible)
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{
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char config[256];
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snprintf(config, sizeof(config),
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"<config alpha=\"%d\" />", visible ? 255 : 0);
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configure(config, strlen(config) + 1);
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}
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Route resolve_session_request(Genode::Service::Name const &service,
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Genode::Session_label const &label) override
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{
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if (service == Nitpicker::Session::service_name())
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return Route { .service = _nitpicker_service,
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.label = label,
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.diag = Session::Diag() };
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return Genode::Slave::Policy::resolve_session_request(service, label);
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}
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};
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Policy _policy;
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Child _child;
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public:
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/**
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* Constructor
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*
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* \param ep entrypoint used for nitpicker child thread
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*/
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Nit_fader_slave(Env &env,
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Rpc_entrypoint &ep,
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Genode::Service &nitpicker_service)
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:
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_policy(env, ep, nitpicker_service),
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_child(env.rm(), ep, _policy)
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{
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visible(false);
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}
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Genode::Slave::Policy &policy() { return _policy; }
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void visible(bool visible)
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{
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_policy.visible(visible);
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}
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};
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#endif /* _NIT_FADER_SLAVE_H_ */
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