51 lines
1004 B
C++
51 lines
1004 B
C++
/*
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* \brief Allocator for UDP/TCP ports
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* \author Martin Stein
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* \date 2016-08-19
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*/
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/*
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* Copyright (C) 2016 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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/* local includes */
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#include <port_allocator.h>
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using namespace Net;
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using namespace Genode;
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Genode::uint16_t Port_allocator_guard::alloc()
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{
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if (_used == _max) {
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throw Out_of_indices(); }
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uint16_t const port = _port_alloc.alloc();
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_used++;
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return port;
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}
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void Port_allocator_guard::free(Genode::uint16_t port)
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{
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_port_alloc.free(port);
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_used = _used ? _used - 1 : 0;
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}
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Port_allocator_guard::Port_allocator_guard(Port_allocator & port_alloc,
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unsigned const max)
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:
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_port_alloc(port_alloc), _max(max)
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{ }
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bool Net::dynamic_port(uint16_t const port)
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{
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return port >= Port_allocator::FIRST &&
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port < (uint32_t)Port_allocator::FIRST + Port_allocator::COUNT;
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}
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