On Mon, 5 Jan 2015, 兰天 wrote:
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_TIMERFUNCTION,
timer_callback);
and I know that when the timeout changed,the callback function are called,
however,the first time we register the callback function ,for example:
curl_multi_setopt(handle, CURLMOPT_TIMERFUNCTION, timer_cb);
and the callback function is
int timer_cb(CURLM *multi, long timeout_ms,void *userp)
{
......
}
the second paramenter timeout_ms value is ?.
Well, before the callback is ever called, the argument of course hasn't gotten
any value.
I read the docs/example hiperfifo.c ,and I see the log ,this value is
1ms,how did this value come?
In many cases, the first timeout that the callback will be told about is 1ms
into the future.
--
/ daniel.haxx.se
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