curl_multi_wait man page on Archlinux

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curl_multi_wait(3)		libcurl Manual		    curl_multi_wait(3)

       curl_multi_wait - polls on all easy handles in a multi handle

       #include <curl/curl.h>

       CURLMcode curl_multi_wait(CURLM *multi_handle,
				 struct curl_waitfd extra_fds[],
				 unsigned int extra_nfds,
				 int timeout_ms,
				 int *numfds);

       This  function polls on all file descriptors used by the curl easy han‐
       dles contained in the given multi handle	 set.	It  will  block	 until
       activity	 is  detected on at least one of the handles or timeout_ms has
       passed.	Alternatively, if the multi  handle  has  a  pending  internal
       timeout	that  has  a shorter expiry time than timeout_ms, that shorter
       time will be used instead to make sure timeout accuracy	is  reasonably

       The  calling  application  may  pass  additional curl_waitfd structures
       which are similar to poll(2)'s pollfd structure to be waited on in  the
       same call.

       On  completion,	if  numfds  is supplied, it will be populated with the
       total number of file descriptors on which interesting  events  occured.
       This  number  can  include both libcurl internal descriptors as well as
       descriptors provided in extra_fds.

       If no extra file descriptors are	 provided  and	libcurl	 has  no  file
       descriptor to offer to wait for, this function will return immediately.

       This  function is encouraged to be used instead of select(3) when using
       the multi interface to allow applications to easier circumvent the com‐
       mon problem with 1024 maximum file descriptors.

       struct curl_waitfd {
	 curl_socket_t fd;
	 short events;
	 short revents;

	      Bit flag to indicating the socket should poll
	      on read events such as new data received.

	      Bit flag to indicating the socket should poll
	      on high priority read events such as out of band data.

	      Bit flag to indicating the socket should poll
	      on write events such as the socket being clear to write  without

       CURLMcode  type,	 general  libcurl  multi  interface  error  code.  See

       This function was added in libcurl 7.28.0.

       curl_multi_fdset(3), curl_multi_perform(3)

libcurl 7.28.0			  12 Jul 2012		    curl_multi_wait(3)

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