68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/*
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Copyright (c) 2003, Magnus Jonsson
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_ALLOCATE_RESOURCES_HPP_INCLUDED
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#define TORRENT_ALLOCATE_RESOURCES_HPP_INCLUDED
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#include <vector>
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#include <boost/any.hpp>
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namespace libtorrent
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{
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struct resource_request {
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resource_request() : used(0), wanted(0), given(0) { }
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// I'm right now actively using:
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int used;
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// I would like to use this much:
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int wanted;
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// Reply: Okay, you're allowed to use this much (a compromise):
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int given;
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};
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// Function to allocate a limited resource fairly among many consumers.
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// It takes into account the current use, and the consumer's desired use.
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// Should be invoked periodically to allow it adjust to the situation (make
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// sure "used" is updated between calls!).
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// If resources = std::numeric_limits<int>::max() it means there is an infinite
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// supply of resources (so everyone can get what they want).
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void allocate_resources(int resources,
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std::vector<resource_request *> & requests);
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}
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#endif
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