NAME

       CURLSHOPT_UNLOCKFUNC - mutex unlock callback

SYNOPSIS

       #include <curl/curl.h>

       void unlockcb(CURL *handle, curl_lock_data data, void *clientp);

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

DESCRIPTION

       Set   a   mutex   unlock   callback  for  the  share  object.  There  is  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.

       clientp is the private pointer you set with CURLSHOPT_USERDATA(3).  This  pointer  is  not
       used by libcurl itself.

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       extern void mutex_unlock(CURL *, curl_lock_data, void *);

       int main(void)
       {
         CURLSHcode sh;
         CURLSH *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 curl 7.10.3

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_cleanup(3), curl_share_init(3), curl_share_setopt(3)