mirror of https://github.com/nodejs/node.git
58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2023 nghttp2 contributors
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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 NGHTTP2_RATELIM_H
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#define NGHTTP2_RATELIM_H
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <nghttp2/nghttp2.h>
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typedef struct nghttp2_ratelim {
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/* burst is the maximum value of val. */
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uint64_t burst;
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/* rate is the amount of value that is regenerated per 1 tstamp. */
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uint64_t rate;
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/* val is the amount of value available to drain. */
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uint64_t val;
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/* tstamp is the last timestamp in second resolution that is known
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to this object. */
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uint64_t tstamp;
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} nghttp2_ratelim;
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/* nghttp2_ratelim_init initializes |rl| with the given parameters. */
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void nghttp2_ratelim_init(nghttp2_ratelim *rl, uint64_t burst, uint64_t rate);
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/* nghttp2_ratelim_update updates rl->val with the current |tstamp|
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given in second resolution. */
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void nghttp2_ratelim_update(nghttp2_ratelim *rl, uint64_t tstamp);
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/* nghttp2_ratelim_drain drains |n| from rl->val. It returns 0 if it
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succeeds, or -1. */
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int nghttp2_ratelim_drain(nghttp2_ratelim *rl, uint64_t n);
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#endif /* NGHTTP2_RATELIM_H */
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