CURLSHOPT_USERDATA(3) Introduction to Library Functions

NAME

CURLSHOPT_USERDATA - pointer passed to the lock and unlock mutex
callbacks

SYNOPSIS

#include <curl/curl.h>

CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_USERDATA, void *clientp);

DESCRIPTION

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).

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

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));
}

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)

libcurl 2025-02-25 CURLSHOPT_USERDATA(3)