CURLSHOPT_UNLOCKFUNC(3)

1CURLSHOPT_UNLOCKFUNC(3)         libcurl Manual         CURLSHOPT_UNLOCKFUNC(3)
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NAME

6       CURLSHOPT_UNLOCKFUNC - mutex unlock callback
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SYNOPSIS

9       #include <curl/curl.h>
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11       void unlockcb(CURL *handle, curl_lock_data data, void *userptr);
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13       CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_UNLOCKFUNC, unlockcb);
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DESCRIPTION

16       Set a mutex unlock callback for the share object. There's a correspond‐
17       ing CURLSHOPT_LOCKFUNC(3) callback  called  when  the  mutex  is  first
18       locked.
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20       The unlockcb argument must be a pointer to a function matching the pro‐
21       totype shown above. The arguments to the callback are:
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23       handle is the currently active easy handle in use when the share object
24       is released.
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26       The data argument tells what kind of data libcurl wants to unlock. Make
27       sure that the callback uses a different lock for each kind of data.
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29       access defines what access type libcurl wants, shared or single.
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31       userptr is the private pointer you set with  CURLSHOPT_USERDATA.   This
32       pointer is not used by libcurl itself.
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PROTOCOLS

35       All
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EXAMPLE

38         CURLSHcode sh;
39         share = curl_share_init();
40         sh = curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, mutex_unlock);
41         if(sh)
42           printf("Error: %s\n", curl_share_strerror(sh));
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AVAILABILITY

45       Added in 7.10
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RETURN VALUE

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