mirror of
https://github.com/transmission/transmission
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df1adf0e0f
* Revert "perf: use libsmall in libtransmission, pt 3 (#5653)" This reverts commit3b03494580. * Revert "perf: use small in libtransmission (#5650)" This reverts commit559f6f0332.
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
// This file Copyright © 2021-2023 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#pragma once
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#ifndef LIBTRANSMISSION_PEER_MODULE
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#error only the libtransmission peer module should #include this header.
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#endif
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#include <cstddef> // size_t
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#include <vector>
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#include "transmission.h"
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#include "torrent.h"
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/**
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* Figures out what blocks we want to request next.
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*/
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class Wishlist
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{
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public:
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struct Mediator
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{
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[[nodiscard]] virtual bool clientCanRequestBlock(tr_block_index_t block) const = 0;
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[[nodiscard]] virtual bool clientCanRequestPiece(tr_piece_index_t piece) const = 0;
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[[nodiscard]] virtual bool isEndgame() const = 0;
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[[nodiscard]] virtual bool isSequentialDownload() const = 0;
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[[nodiscard]] virtual size_t countActiveRequests(tr_block_index_t block) const = 0;
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[[nodiscard]] virtual size_t countMissingBlocks(tr_piece_index_t piece) const = 0;
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[[nodiscard]] virtual tr_block_span_t blockSpan(tr_piece_index_t) const = 0;
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[[nodiscard]] virtual tr_piece_index_t countAllPieces() const = 0;
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[[nodiscard]] virtual tr_priority_t priority(tr_piece_index_t) const = 0;
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virtual ~Mediator() = default;
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};
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constexpr explicit Wishlist(Mediator const& mediator)
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: mediator_{ mediator }
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{
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}
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// the next blocks that we should request from a peer
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[[nodiscard]] std::vector<tr_block_span_t> next(size_t n_wanted_blocks);
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private:
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Mediator const& mediator_;
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};
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