72 lines
1.4 KiB
C++
72 lines
1.4 KiB
C++
/*
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* \brief Heartbeat monitoring support
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* \author Norman Feske
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* \date 2018-11-15
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*/
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/*
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* Copyright (C) 2018 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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/* Genode includes */
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#include <base/env.h>
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#include <base/log.h>
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/* base-internal includes */
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#include <base/internal/globals.h>
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#include <base/internal/unmanaged_singleton.h>
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using namespace Genode;
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namespace {
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/*
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* Respond to heartbeat requests from the parent
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*/
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struct Heartbeat_handler
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{
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Env &_env;
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void _handle() { _env.parent().heartbeat_response(); }
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Io_signal_handler<Heartbeat_handler> _handler {
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_env.ep(), *this, &Heartbeat_handler::_handle };
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Heartbeat_handler(Env &env) : _env(env)
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{
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_env.parent().heartbeat_sigh(_handler);
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}
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~Heartbeat_handler()
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{
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_env.parent().heartbeat_sigh(Signal_context_capability());
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}
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};
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}
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static Constructible<Heartbeat_handler> *_heartbeat_handler_ptr = nullptr;
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void Genode::init_heartbeat_monitoring(Env &env)
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{
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if (_heartbeat_handler_ptr)
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return;
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_heartbeat_handler_ptr = unmanaged_singleton<Constructible<Heartbeat_handler>>();
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_heartbeat_handler_ptr->construct(env);
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}
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void Genode::deinit_heartbeat_monitoring()
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{
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if (!_heartbeat_handler_ptr)
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return;
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_heartbeat_handler_ptr->destruct();
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_heartbeat_handler_ptr = nullptr;
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}
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