69 lines
2.8 KiB
Groff
69 lines
2.8 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at http://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.TH curl_multi_wait 3 "12 Jul 2012" "libcurl 7.28.0" "libcurl Manual"
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.SH NAME
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curl_multi_select - polls on all easy handles in a multi handle
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLMcode curl_multi_wait(CURLM *multi_handle,
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struct curl_waitfd extra_fds[],
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unsigned int extra_nfds,
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int timeout_ms);
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.ad
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.SH DESCRIPTION
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This function polls on all file descriptors used by the curl easy handles
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contained in the given multi handle set. It will block until activity is
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detected on at least one of the handles or \fItimeout_ms\fP has passed.
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The calling application may pass additional curl_waitfd structures which are
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similar to \fIpoll(2)\fP's pollfd structure to be waited on in the same call.
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This function is encouraged to be used instead of select(3) when using the
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multi interface to allow applications to easier circumvent the common problem
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with 1024 maximum file descriptors.
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.SH curl_waitfd
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.nf
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struct curl_waitfd {
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curl_socket_t fd;
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short events;
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short revents;
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};
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.fi
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.IP CURL_WAIT_POLLIN
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Bit flag to curl_waitfd.events indicating the socket should poll on read
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events such as new data received.
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.IP CURL_WAIT_POLLPRI
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Bit flag to curl_waitfd.events indicating the socket should poll on high
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priority read events such as out of band data.
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.IP CURL_WAIT_POLLOUT
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Bit flag to curl_waitfd.events indicating the socket should poll on write
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events such as the socket being clear to write without blocking.
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.SH RETURN VALUE
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CURLMcode type, general libcurl multi interface error code. See
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\fIlibcurl-errors(3)\fP
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.SH AVAILABILITY
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This function was added in libcurl 7.28.0
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.SH "SEE ALSO"
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.BR curl_multi_fdset "(3), " curl_multi_perform "(3)"
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