curl/docs/libcurl/opts/CURLMOPT_TIMERDATA.3
Daniel Stenberg 2bc1d775f5
copyright: update all copyright lines and remove year ranges
- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205
2023-01-03 09:19:21 +01:00

85 lines
2.5 KiB
Groff

.\" **************************************************************************
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.\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.\" * are also available at https://curl.se/docs/copyright.html.
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
.\" * copies of the Software, and permit persons to whom the Software is
.\" * furnished to do so, under the terms of the COPYING file.
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * SPDX-License-Identifier: curl
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.\"
.TH CURLMOPT_TIMERDATA 3 "17 Jun 2014" "libcurl 7.37.0" "curl_multi_setopt options"
.SH NAME
CURLMOPT_TIMERDATA \- custom pointer to pass to timer callback
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_TIMERDATA, void *pointer);
.SH DESCRIPTION
A data \fBpointer\fP to pass to the timer callback set with the
\fICURLMOPT_TIMERFUNCTION(3)\fP option.
This pointer will not be touched by libcurl but will only be passed in to the
timer callbacks's \fBuserp\fP argument.
.SH DEFAULT
NULL
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
static gboolean timeout_cb(gpointer user_data)
{
int running;
if(user_data) {
g_free(user_data);
curl_multi_setopt(curl_handle, CURLMOPT_TIMERDATA, NULL);
}
curl_multi_socket_action(multi, CURL_SOCKET_TIMEOUT, 0, &running);
return G_SOURCE_REMOVE;
}
static int timerfunc(CURLM *multi, long timeout_ms, void *userp)
{
guint *id = userp;
if(id)
g_source_remove(*id);
/* -1 means we should just delete our timer. */
if(timeout_ms == -1) {
g_free(id);
id = NULL;
}
else {
if(!id)
id = g_new(guint, 1);
*id = g_timeout_add(timeout_ms, timeout_cb, id);
}
current_timer = id;
return 0;
}
curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, timerfunc);
.fi
.SH AVAILABILITY
Added in 7.16.0
.SH RETURN VALUE
Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLMOPT_TIMERFUNCTION "(3), " CURLMOPT_SOCKETFUNCTION "(3), "