Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/libcurl-share.3 @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .TH libcurl-share 3 "8 Aug 2003" "libcurl 7.10.7" "libcurl share interface"
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23 .SH NAME
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24 libcurl-share \- how to use the share interface
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25 .SH DESCRIPTION
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26 This is an overview on how to use the libcurl share interface in your C
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27 programs. There are specific man pages for each function mentioned in
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28 here.
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30 All functions in the share interface are prefixed with curl_share.
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31
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32 .SH "OBJECTIVES"
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33 The share interface was added to enable sharing of data between curl
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34 \&"handles".
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35 .SH "ONE SET OF DATA - MANY TRANSFERS"
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36 You can have multiple easy handles share data between them. Have them update
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37 and use the \fBsame\fP cookie database, DNS cache, TLS session cache and/or
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38 connection cache! This way, each single transfer will take advantage from data
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39 updates made by the other transfer(s).
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40 .SH "SHARE OBJECT"
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41 You create a shared object with \fIcurl_share_init(3)\fP. It returns a handle
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42 for a newly created one.
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44 You tell the shared object what data you want it to share by using
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45 \fIcurl_share_setopt(3)\fP.
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47 Since you can use this share from multiple threads, and libcurl has no
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48 internal thread synchronization, you must provide mutex callbacks if you're
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49 using this multi-threaded. You set lock and unlock functions with
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50 \fIcurl_share_setopt(3)\fP too.
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51
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52 Then, you make an easy handle to use this share, you set the
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53 \fICURLOPT_SHARE(3)\fP option with \fIcurl_easy_setopt(3)\fP, and pass in
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54 share handle. You can make any number of easy handles share the same share
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55 handle.
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57 To make an easy handle stop using that particular share, you set
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58 \fICURLOPT_SHARE(3)\fP to NULL for that easy handle. To make a handle stop
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59 sharing a particular data, you can \fICURLSHOPT_UNSHARE\fP it.
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60
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61 When you're done using the share, make sure that no easy handle is still using
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62 it, and call \fIcurl_share_cleanup(3)\fP on the handle.
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63 .SH "SEE ALSO"
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64 .BR curl_share_init "(3), " curl_share_setopt "(3), " curl_share_cleanup "(3)"
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65 .BR libcurl-errors "(3), " libcurl-easy "(3), " libcurl-multi "(3) "