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74 lines
2.5 KiB
74 lines
2.5 KiB
/* |
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Copyright (c) 2009-2012, Arvid Norberg |
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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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#include <boost/cstdint.hpp> |
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#include "libtorrent/bandwidth_queue_entry.hpp" |
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#include <cstring> |
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#include <algorithm> |
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namespace libtorrent |
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{ |
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bw_request::bw_request(boost::intrusive_ptr<bandwidth_socket> const& pe |
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, int blk, int prio) |
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: peer(pe) |
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, priority(prio) |
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, assigned(0) |
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, request_size(blk) |
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, ttl(20) |
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{ |
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TORRENT_ASSERT(priority > 0); |
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std::memset(channel, 0, sizeof(channel)); |
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} |
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int bw_request::assign_bandwidth() |
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{ |
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TORRENT_ASSERT(assigned < request_size); |
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int quota = request_size - assigned; |
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TORRENT_ASSERT(quota >= 0); |
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--ttl; |
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if (quota == 0) return quota; |
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for (int j = 0; j < 5 && channel[j]; ++j) |
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{ |
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if (channel[j]->throttle() == 0) continue; |
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if (channel[j]->tmp == 0) continue; |
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quota = (std::min)(int(boost::int64_t(channel[j]->distribute_quota) |
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* priority / channel[j]->tmp), quota); |
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} |
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assigned += quota; |
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for (int j = 0; j < 5 && channel[j]; ++j) |
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channel[j]->use_quota(quota); |
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TORRENT_ASSERT(assigned <= request_size); |
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return quota; |
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} |
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} |
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