c: Copyright (C) Daniel Stenberg, <daniel.se>, et al. SPDX-License-Identifier: curl Title: CURLSHOPT_USERDATA Section: 3 Source: libcurl See-also:
CURLSHOPT_USERDATA - pointer passed to the lock and unlock mutex callbacks
#include <curl/curl.h> CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_USERDATA, void *clientp);
The clientp parameter is held verbatim by libcurl and is passed on as the clientp argument to the callbacks set with CURLSHOPT_LOCKFUNC(3) and CURLSHOPT_UNLOCKFUNC(3).
All
struct secrets { void *custom; }; int main(void) { CURLSHcode sh; struct secrets private_stuff; CURLSH *share = curl_share_init(); sh = curl_share_setopt(share, CURLSHOPT_USERDATA, &private_stuff); if(sh) printf("Error: %s\n", curl_share_strerror(sh)); }
Added in 7.10
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.