63 lines
1.1 KiB
Markdown
63 lines
1.1 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLSHOPT_USERDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLSHOPT_LOCKFUNC (3)
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- curl_share_cleanup (3)
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- curl_share_init (3)
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- curl_share_setopt (3)
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---
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# NAME
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CURLSHOPT_USERDATA - pointer passed to the lock and unlock mutex callbacks
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_USERDATA, void *clientp);
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~~~
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# DESCRIPTION
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The *clientp* parameter is held verbatim by libcurl and is passed on as
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the *clientp* argument to the callbacks set with
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CURLSHOPT_LOCKFUNC(3) and CURLSHOPT_UNLOCKFUNC(3).
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# PROTOCOLS
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All
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# EXAMPLE
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~~~c
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struct secrets {
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void *custom;
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};
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int main(void)
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{
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CURLSHcode sh;
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struct secrets private_stuff;
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CURLSH *share = curl_share_init();
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sh = curl_share_setopt(share, CURLSHOPT_USERDATA, &private_stuff);
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if(sh)
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printf("Error: %s\n", curl_share_strerror(sh));
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}
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~~~
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# AVAILABILITY
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Added in 7.10
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# RETURN VALUE
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CURLSHE_OK (zero) means that the option was set properly, non-zero means an
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error occurred. See libcurl-errors(3) for the full list with
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descriptions.
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