mirror of
https://codeberg.org/kiss-community/repo
synced 2024-09-12 15:50:12 +00:00
4ca86088e3
closes #180
59 lines
1.8 KiB
Groff
59 lines
1.8 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLSHOPT_LOCKFUNC.md
|
|
.TH CURLSHOPT_LOCKFUNC 3 "March 15 2024" libcurl
|
|
.SH NAME
|
|
CURLSHOPT_LOCKFUNC \- mutex lock callback
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
void lockcb(CURL *handle, curl_lock_data data, curl_lock_access access,
|
|
void *clientp);
|
|
|
|
CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_LOCKFUNC, lockcb);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
Set a mutex lock callback for the share object, to allow it to get used by
|
|
multiple threads concurrently. There is a corresponding
|
|
\fICURLSHOPT_UNLOCKFUNC(3)\fP callback called when the mutex is again released.
|
|
|
|
The \fIlockcb\fP argument must be a pointer to a function matching the
|
|
prototype shown above. The arguments to the callback are:
|
|
|
|
\fIhandle\fP is the currently active easy handle in use when the share object
|
|
is intended to get used.
|
|
|
|
The \fIdata\fP argument tells what kind of data libcurl wants to lock. Make
|
|
sure that the callback uses a different lock for each kind of data.
|
|
|
|
\fIaccess\fP defines what access type libcurl wants, shared or single.
|
|
|
|
\fIclientp\fP is the private pointer you set with \fICURLSHOPT_USERDATA(3)\fP.
|
|
This pointer is not used by libcurl itself.
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
extern void mutex_lock(CURL *handle, curl_lock_data data,
|
|
curl_lock_access access, void *clientp);
|
|
|
|
int main(void)
|
|
{
|
|
CURLSHcode sh;
|
|
CURLSH *share = curl_share_init();
|
|
sh = curl_share_setopt(share, CURLSHOPT_LOCKFUNC, mutex_lock);
|
|
if(sh)
|
|
printf("Error: %s\\n", curl_share_strerror(sh));
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.10
|
|
.SH RETURN VALUE
|
|
CURLSHE_OK (zero) means that the option was set properly, non\-zero means an
|
|
error occurred. See \fIlibcurl\-errors(3)\fP for the full list with
|
|
descriptions.
|
|
.SH SEE ALSO
|
|
.BR CURLSHOPT_UNLOCKFUNC (3),
|
|
.BR curl_share_cleanup (3),
|
|
.BR curl_share_init (3),
|
|
.BR curl_share_setopt (3)
|