mirror of
https://github.com/curl/curl.git
synced 2024-11-27 05:50:21 +08:00
47 lines
1.9 KiB
Groff
47 lines
1.9 KiB
Groff
|
.\" You can view this file with:
|
||
|
|
.\" nroff -man [file]
|
||
|
|
.\" $Id$
|
||
|
|
.\"
|
||
|
|
.TH libcurl-share 3 "8 Aug 2003" "libcurl 7.10.7" "libcurl share interface"
|
||
|
|
.SH NAME
|
||
|
|
libcurl-share \- how to use the share interface
|
||
|
|
.SH DESCRIPTION
|
||
|
|
This is an overview on how to use the libcurl share interface in your C
|
||
|
|
programs. There are specific man pages for each function mentioned in
|
||
|
|
here.
|
||
|
|
|
||
|
|
All functions in the share interface are prefixed with curl_share.
|
||
|
|
|
||
|
|
.SH "OBJECTIVES"
|
||
|
|
The share interface was added to enable sharing of data between curl
|
||
|
|
\&"handles".
|
||
|
|
.SH "ONE SET OF DATA - MANY TRANSFERS"
|
||
|
|
You can have multiple easy handles share data between them. Have them update
|
||
|
|
and use the \fBsame\fP cookie database or DNS cache! This way, each single
|
||
|
|
transfer will take advantage from data updates made by the other transfer(s).
|
||
|
|
.SH "SHARE OBJECT"
|
||
|
|
You create a shared object with \fIcurl_share_init()\fP. It returns a handle
|
||
|
|
for a newly created one.
|
||
|
|
|
||
|
|
You tell the shared object what data you want it to share by using
|
||
|
|
\fIcurl_share_setopt()\fP. Currently you can only share DNS and/or COOKIE
|
||
|
|
data.
|
||
|
|
|
||
|
|
Since you can use this share from multiple threads, and libcurl has no
|
||
|
|
internal thread synchronization, you must provide mutex callbacks if you're
|
||
|
|
using this multi-threaded. You set lock and unlock functions with
|
||
|
|
\fIcurl_share_setopt()\fP too.
|
||
|
|
|
||
|
|
Then, you make an easy handle to use this share, you set the CURLOPT_SHARE
|
||
|
|
option with \fIcurl_easy_setopt\fP, and pass in share handle. You can make any
|
||
|
|
number of easy handles share the same share handle.
|
||
|
|
|
||
|
|
To make an easy handle stop using that particular share, you set CURLOPT_SHARE
|
||
|
|
to NULL for that easy handle. To make a handle stop sharing a particular data,
|
||
|
|
you can CURLSHOPT_UNSHARE it.
|
||
|
|
|
||
|
|
When you're done using the share, make sure that no easy handle is still using
|
||
|
|
it, and call \fIcurl_share_cleanup()\fP on the handle.
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.BR curl_share_init "(3), " curl_share_setopt "(3), " curl_share_cleanup "(3)"
|