master-server/deps/curl/docs/libcurl/opts/CURLMOPT_TIMERDATA.3
2023-12-11 20:30:44 -05:00

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.TH CURLMOPT_TIMERDATA 3 "17 Jun 2014" libcurl libcurl
.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 is not touched by libcurl but is only be passed in to the timer
callbacks's \fBclientp\fP argument.
.SH DEFAULT
NULL
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
struct priv {
void *custom;
};
static int timerfunc(CURLM *multi, long timeout_ms, void *clientp)
{
struct priv *mydata = clientp;
printf("our ptr: %p\\n", mydata->custom);
if(timeout_ms) {
/* this is the new single timeout to wait for */
}
else {
/* delete the timeout, nothing to wait for now */
}
}
int main(void)
{
struct priv mydata;
CURLM *multi = curl_multi_init();
curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, timerfunc);
curl_multi_setopt(multi, CURLMOPT_TIMERDATA, &mydata);
}
.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),
.BR CURLMOPT_SOCKETFUNCTION (3)