mirror of
https://github.com/OpenNebula/one.git
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117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2024, OpenNebula Project, OpenNebula Systems */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef ADDRESS_RANGE_INTERNAL_H_
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#define ADDRESS_RANGE_INTERNAL_H_
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#include <string>
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#include "AddressRange.h"
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class VectorAttribute;
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class AddressRangeInternal : public AddressRange
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{
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public:
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AddressRangeInternal(unsigned int _id):AddressRange(_id), next(0) {};
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virtual ~AddressRangeInternal() {};
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/* ---------------------------------------------------------------------- */
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/* AddressRange Interface */
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/* ---------------------------------------------------------------------- */
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/**
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* Init an Address Range based on a vector attribute.
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* @param attr the description of the AddressRange
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* @param error_msg description if error
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* @return 0 on success
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*/
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int from_vattr(VectorAttribute * attr, std::string& error_msg) override
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{
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return AddressRange::from_attr(attr, error_msg);
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}
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/**
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* Sets the given range of addresses (by index) as used
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* @param index the first address to set as used
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* @param sz number of addresses to set
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* @param msg describing the error if any
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*
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* @return 0 if success
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*/
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int allocate_addr(unsigned int index, unsigned int rsize,
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std::string& error_msg) override
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{
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return 0;
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}
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/**
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* Gets a range of free addresses
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* @param index the first address in the range
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* @param size number of addresses requested in the range
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* @param msg describing the error if any
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*
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* @return 0 if success
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*/
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int get_addr(unsigned int& index, unsigned int rsize,
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std::string& error_msg) override
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{
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if ( rsize == 1 )
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{
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return get_single_addr(index, error_msg);
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}
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return get_range_addr(index, rsize, error_msg);
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}
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/**
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* Sets the given address (by index) as free
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* @param index of the address
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* @param msg describing the error if any
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*
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* @return 0 if success
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*/
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int free_addr(unsigned int index, std::string& msg) override
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{
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return 0;
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};
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private:
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/**
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* Lookup index for the next free address lease
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*/
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unsigned int next;
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/**
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* Get a free lease
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* @param index of the free lease, undefined if error
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* @param msg with error description if any
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* @return 0 on success -1 otherwise
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*/
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int get_single_addr(unsigned int& index, std::string& msg);
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/**
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* Get a free and continuous range of leases
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* @param index of the first free lease in range, undefined if error
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* @param sz of the range
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* @param msg with error description if any
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* @return 0 on success -1 otherwise
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*/
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int get_range_addr(unsigned int& index, unsigned int sz, std::string& msg) const;
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};
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#endif
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