mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 00:55:04 -05:00
8373ca3641
This is a minor change in behavior after having been pointed out by Mark Tully and discussed on the list. Initially this case would internally call poll() with no sockets and a timeout which would equal a sleep for that specified time. Bug: http://curl.haxx.se/mail/lib-2012-10/0076.html Reported by: Mark Tully
76 lines
3.1 KiB
Groff
76 lines
3.1 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2012, 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 http://curl.haxx.se/docs/copyright.html.
|
|
.\" *
|
|
.\" * 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.
|
|
.\" *
|
|
.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
.\" * KIND, either express or implied.
|
|
.\" *
|
|
.\" **************************************************************************
|
|
.TH curl_multi_wait 3 "12 Jul 2012" "libcurl 7.28.0" "libcurl Manual"
|
|
.SH NAME
|
|
curl_multi_wait - polls on all easy handles in a multi handle
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#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);
|
|
.ad
|
|
.SH DESCRIPTION
|
|
This function polls on all file descriptors used by the curl easy handles
|
|
contained in the given multi handle set. It will block until activity is
|
|
detected on at least one of the handles or \fItimeout_ms\fP has passed.
|
|
|
|
The calling application may pass additional curl_waitfd structures which are
|
|
similar to \fIpoll(2)\fP's pollfd structure to be waited on in the same call.
|
|
|
|
On completion, if \fInumfds\fP is supplied, it will be populated with the
|
|
number of file descriptors on which interesting events occured.
|
|
|
|
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 common problem
|
|
with 1024 maximum file descriptors.
|
|
.SH curl_waitfd
|
|
.nf
|
|
struct curl_waitfd {
|
|
curl_socket_t fd;
|
|
short events;
|
|
short revents;
|
|
};
|
|
.fi
|
|
.IP CURL_WAIT_POLLIN
|
|
Bit flag to curl_waitfd.events indicating the socket should poll on read
|
|
events such as new data received.
|
|
.IP CURL_WAIT_POLLPRI
|
|
Bit flag to curl_waitfd.events indicating the socket should poll on high
|
|
priority read events such as out of band data.
|
|
.IP CURL_WAIT_POLLOUT
|
|
Bit flag to curl_waitfd.events indicating the socket should poll on write
|
|
events such as the socket being clear to write without blocking.
|
|
.SH RETURN VALUE
|
|
CURLMcode type, general libcurl multi interface error code. See
|
|
\fIlibcurl-errors(3)\fP
|
|
.SH AVAILABILITY
|
|
This function was added in libcurl 7.28.0.
|
|
.SH "SEE ALSO"
|
|
.BR curl_multi_fdset "(3), " curl_multi_perform "(3)"
|