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2de22a00c7
Use `data->progress.now` as the timestamp of proecssing a transfer. Update it on significant events and refrain from calling `curlx_now()` in many places. The problem this addresses is a) calling curlx_now() has costs, depending on platform. Calling it every time results in 25% increase `./runtest` duration on macOS. b) we used to pass a `struct curltime *` around to save on calls, but when some method directly use `curx_now()` and some use the passed pointer, the transfer experienes non-linear time. This results in timeline checks to report events in the wrong order. By keeping a timestamp in the easy handle and updating it there, no longer invoking `curlx_now()` in the "lower" methods, the transfer can observer a steady clock progression. Add documentation in docs/internals/TIME-KEEPING.md Reported-by: Viktor Szakats Fixes #19935 Closes #19961
82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
#ifndef HEADER_CURL_MULTI_EV_H
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#define HEADER_CURL_MULTI_EV_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "hash.h"
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struct Curl_easy;
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struct Curl_multi;
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struct easy_pollset;
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struct uint32_bset;
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/* meta key for event pollset at easy handle or connection */
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#define CURL_META_MEV_POLLSET "meta:mev:ps"
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struct curl_multi_ev {
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struct Curl_hash sh_entries;
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};
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/* Setup/teardown of multi event book-keeping. */
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void Curl_multi_ev_init(struct Curl_multi *multi, size_t hashsize);
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void Curl_multi_ev_cleanup(struct Curl_multi *multi);
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/* Assign a 'user_data' to be passed to the socket callback when
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* invoked with the given socket. This will fail if this socket
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* is not active, e.g. the application has not been told to monitor it. */
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CURLMcode Curl_multi_ev_assign(struct Curl_multi *multi, curl_socket_t s,
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void *user_data);
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/* Assess the transfer by getting its current pollset, compute
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* any changes to the last one and inform the application's socket
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* callback if things have changed. */
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CURLMcode Curl_multi_ev_assess_xfer(struct Curl_multi *multi,
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struct Curl_easy *data);
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/* Assess all easy handles on the list */
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CURLMcode Curl_multi_ev_assess_xfer_bset(struct Curl_multi *multi,
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struct uint32_bset *set,
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struct curltime *pnow);
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/* Assess the connection by getting its current pollset */
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CURLMcode Curl_multi_ev_assess_conn(struct Curl_multi *multi,
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struct Curl_easy *data,
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struct connectdata *conn);
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/* Mark all transfers tied to the given socket as dirty */
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void Curl_multi_ev_dirty_xfers(struct Curl_multi *multi,
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curl_socket_t s);
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/* Socket will be closed, forget anything we know about it. */
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void Curl_multi_ev_socket_done(struct Curl_multi *multi,
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struct Curl_easy *data, curl_socket_t s);
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/* Transfer is removed from the multi */
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void Curl_multi_ev_xfer_done(struct Curl_multi *multi,
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struct Curl_easy *data);
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/* Connection is being destroyed */
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void Curl_multi_ev_conn_done(struct Curl_multi *multi,
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struct Curl_easy *data,
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struct connectdata *conn);
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#endif /* HEADER_CURL_MULTI_EV_H */
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