NAME

       CURLSHOPT_UNLOCKFUNC - mutex unlock callback

SYNOPSIS

       #include <curl/curl.h>

       void unlockcb(CURL *handle, curl_lock_data data, curl_lock_access access,
                     void *userptr);

       CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_UNLOCKFUNC, unlockcb);

DESCRIPTION

       Set   a   mutex   unlock   callback   for   the  share  object.  There's  a  corresponding
       CURLSHOPT_LOCKFUNC(3) callback called when the mutex is first locked.

       The unlockcb argument must be a pointer to a function matching the prototype shown  above.
       The arguments to the callback are:

       handle is the currently active easy handle in use when the share object is released.

       The  data  argument  tells  what  kind of data libcurl wants to unlock. Make sure that the
       callback uses a different lock for each kind of data.

       access defines what access type libcurl wants, shared or single.

       userptr is the private pointer you set with CURLSHOPT_USERDATA.  This pointer is not  used
       by libcurl itself.

PROTOCOLS

       All

EXAMPLE

         CURLSHcode sh
         share = curl_share_init();
         sh = curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, mutex_unlock);
         if(sh)
           printf("Error: %s\n", curl_share_strerror(sh));

AVAILABILITY

       Added in 7.10

RETURN VALUE

       CURLSHE_OK  (zero)  means  that  the  option  was  set  properly,  non-zero means an error
       occurred. See libcurl-errors(3) for the full list with descriptions.

SEE ALSO

       CURLSHOPT_LOCKFUNC(3), curl_share_setopt(3), curl_share_cleanup(3), curl_share_init(3)