78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SHRPX_DOWNSTREAM_QUEUE_H
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#define SHRPX_DOWNSTREAM_QUEUE_H
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#include "shrpx.h"
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#include <stdint.h>
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#include <map>
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#include <memory>
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namespace shrpx {
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class Downstream;
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class DownstreamQueue {
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public:
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DownstreamQueue();
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~DownstreamQueue();
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void add_pending(std::unique_ptr<Downstream> downstream);
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void add_failure(std::unique_ptr<Downstream> downstream);
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void add_active(std::unique_ptr<Downstream> downstream);
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// Removes |downstream| from either pending_downstreams_,
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// active_downstreams_ or failure_downstreams_ and returns it
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// wrapped in std::unique_ptr.
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std::unique_ptr<Downstream> remove(int32_t stream_id);
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// Finds Downstream object denoted by |stream_id| either in
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// pending_downstreams_, active_downstreams_ or
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// failure_downstreams_.
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Downstream* find(int32_t stream_id);
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// Returns the number of active Downstream objects.
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size_t num_active() const;
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// Returns true if pending_downstreams_ is empty.
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bool pending_empty() const;
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// Pops first Downstream object in pending_downstreams_ and returns
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// it.
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std::unique_ptr<Downstream> pop_pending();
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// Returns first Downstream object in pending_downstreams_. This
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// does not pop the first one. If queue is empty, returns nullptr.
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Downstream* pending_top() const;
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const std::map<int32_t, std::unique_ptr<Downstream>>&
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get_active_downstreams() const;
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private:
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// Downstream objects, not processed yet
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std::map<int32_t, std::unique_ptr<Downstream>> pending_downstreams_;
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// Downstream objects in use, consuming downstream concurrency limit
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std::map<int32_t, std::unique_ptr<Downstream>> active_downstreams_;
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// Downstream objects, failed to connect to downstream server
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std::map<int32_t, std::unique_ptr<Downstream>> failure_downstreams_;
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};
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} // namespace shrpx
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#endif // SHRPX_DOWNSTREAM_QUEUE_H
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