103 lines
1.8 KiB
C++
103 lines
1.8 KiB
C++
/*
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* \brief Main-signal receiver and signal-helper functions
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* \author Sebastian Sumpf <sebastian.sumpf@genode-labs.com>
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* \date 2012-05-23
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*/
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/*
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* Copyright (C) 2012-2013 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 General Public License version 2.
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*/
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#ifndef _SIGNAL_H_
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#define _SIGNAL_H_
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#include <base/env.h>
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#include <base/printf.h>
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#include <base/signal.h>
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/**
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* Context base for IRQ, Timer, etc.
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*/
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class Driver_context : public Genode::Signal_context
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{
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public:
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/**
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* Perform context operation
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*/
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virtual void handle() = 0;
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virtual char const *debug() = 0;
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};
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/**
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* This singelton currently received all signals
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*/
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class Service_handler
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{
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private:
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Genode::Signal_receiver *_receiver;
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Service_handler() { }
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public:
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static Service_handler * s()
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{
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static Service_handler _s;
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return &_s;
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}
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void receiver(Genode::Signal_receiver *recv) { _receiver = recv; }
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void check_signal(bool block = true)
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{
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while (_receiver->pending() || block) {
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Genode::Signal s = _receiver->wait_for_signal();
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/* handle signal IRQ, timer, or event signals */
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Driver_context *ctx = static_cast<Driver_context *>(s.context());
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ctx->handle();
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block = false;
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}
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}
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};
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/**
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* Helper that holds sender and receiver
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*/
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class Signal_helper
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{
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private:
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Genode::Signal_receiver *_receiver;
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Genode::Signal_transmitter *_sender;
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public:
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Signal_helper(Genode::Signal_receiver *recv)
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: _receiver(recv),
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_sender(new (Genode::env()->heap()) Genode::Signal_transmitter()) { }
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Genode::Signal_receiver *receiver() const { return _receiver; }
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Genode::Signal_transmitter *sender() const { return _sender; }
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};
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namespace Irq
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{
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void init(Genode::Signal_receiver *recv);
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void check_irq(bool block = false);
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}
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#endif /* _SIGNAL_H_ */
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