78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*
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* \brief Implementation of the SIGNAL service on the HW-core
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* \author Martin Stein
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* \date 2012-05-05
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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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/* Genode includes */
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#include <base/printf.h>
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#include <kernel/syscalls.h>
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/* core includes */
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#include <signal_session_component.h>
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using namespace Genode;
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Signal_session_component::Signal_session_component(Allocator * const md,
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size_t const ram_quota) :
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_md_alloc(md, ram_quota),
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_receivers_slab(Kernel::signal_receiver_size(), RECEIVERS_SB_SIZE,
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(Slab_block *)&_initial_receivers_sb, &_md_alloc),
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_contexts_slab(Kernel::signal_context_size(), CONTEXTS_SB_SIZE,
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(Slab_block *)&_initial_contexts_sb, &_md_alloc)
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{ }
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Signal_session_component::~Signal_session_component()
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{
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PERR("%s: Not implemented", __PRETTY_FUNCTION__);
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while (1) ;
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}
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Signal_receiver_capability Signal_session_component::alloc_receiver()
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{
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/* create receiver kernel-object */
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size_t const s = Kernel::signal_receiver_size();
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void * p;
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if (!_receivers_slab.alloc(s, &p)) throw Out_of_metadata();
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unsigned const id = Kernel::new_signal_receiver(p);
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if (!id) throw Out_of_metadata();
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/* return reference to the new kernel-object */
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Native_capability c(id, 0);
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return reinterpret_cap_cast<Signal_receiver>(c);
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}
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Signal_context_capability
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Signal_session_component::alloc_context(Signal_receiver_capability r,
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unsigned imprint)
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{
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/* create context kernel-object */
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size_t const s = Kernel::signal_context_size();
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void * p;
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if (!_contexts_slab.alloc(s, &p)) throw Out_of_metadata();
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unsigned const id = Kernel::new_signal_context(p, r.dst(), imprint);
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if (!id) throw Out_of_metadata();
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/* return reference to the new kernel-object */
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Native_capability c(id, 0);
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return reinterpret_cap_cast<Signal_context>(c);
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}
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/**
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* FIXME should regain the kernel-object memory from kernel
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*/
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void Signal_session_component::free_context(Signal_context_capability cap) {
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PDBG("Not implemented"); }
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