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)

libcurl 7.81.0                                  November 12, 2021                        CURLSHOPT_UNLOCKFUNC(3)