Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/curl_multi_timeout.3 @ 22:d77477b4e151

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Let _int_rc() also handle (i.e. ignore) a local version suffix
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:05:57 +0200
parents b50eed0cc0ef
children
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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 - 2016, 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 curl_multi_timeout 3 "2 Jan 2006" "libcurl 7.16.0" "libcurl Manual"
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23 .SH NAME
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24 curl_multi_timeout \- how long to wait for action before proceeding
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25 .SH SYNOPSIS
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26 #include <curl/curl.h>
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28 CURLMcode curl_multi_timeout(CURLM *multi_handle, long *timeout);
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29 .SH DESCRIPTION
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31 An application using the libcurl multi interface should call
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32 \fIcurl_multi_timeout(3)\fP to figure out how long it should wait for socket
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33 actions \- at most \- before proceeding.
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35 Proceeding means either doing the socket-style timeout action: call the
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36 \fIcurl_multi_socket_action(3)\fP function with the \fBsockfd\fP argument set
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37 to CURL_SOCKET_TIMEOUT, or call \fIcurl_multi_perform(3)\fP if you're using
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38 the simpler and older multi interface approach.
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40 The timeout value returned in the long \fBtimeout\fP points to, is in number
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41 of milliseconds at this very moment. If 0, it means you should proceed
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42 immediately without waiting for anything. If it returns -1, there's no timeout
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43 at all set.
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45 An application that uses the multi_socket API SHOULD NOT use this function, but
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46 SHOULD instead use \fIcurl_multi_setopt(3)\fP and its
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47 \fPCURLMOPT_TIMERFUNCTION\fP option for proper and desired behavior.
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49 Note: if libcurl returns a -1 timeout here, it just means that libcurl
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50 currently has no stored timeout value. You must not wait too long (more than a
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51 few seconds perhaps) before you call curl_multi_perform() again.
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52 .SH EXAMPLE
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53 .nf
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54 struct timeval timeout;
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55 long timeo;
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57 curl_multi_timeout(multi_handle, &timeo);
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58 if(timeo < 0)
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59 /* no set timeout, use a default */
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60 timeo = 980;
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62 timeout.tv_sec = timeo / 1000;
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63 timeout.tv_usec = (timeo % 1000) * 1000;
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65 /* wait for activities no longer than the set timeout */
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66 select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
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67 .fi
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68 .SH "RETURN VALUE"
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69 The standard CURLMcode for multi interface error codes.
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70 .SH "TYPICAL USAGE"
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71 Call \fIcurl_multi_timeout(3)\fP, then wait for action on the sockets. You
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72 figure out which sockets to wait for by calling \fIcurl_multi_fdset(3)\fP or
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73 by a previous call to \fIcurl_multi_socket(3)\fP.
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74 .SH AVAILABILITY
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75 This function was added in libcurl 7.15.4.
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76 .SH "SEE ALSO"
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77 .BR curl_multi_fdset "(3), " curl_multi_info_read "(3), "
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78 .BR curl_multi_socket "(3), " curl_multi_setopt "(3) "