

#include <errno.h>
#include <openssl/err.h>
#include "internal/time.h"

OSSL_TIME ossl_time_now(void)
{
    OSSL_TIME r;

#if defined(_WIN32) && !defined(OPENSSL_SYS_UEFI)
    SYSTEMTIME st;
    union {
        unsigned __int64 ul;
        FILETIME ft;
    } now;

    GetSystemTime(&st);
    SystemTimeToFileTime(&st, &now.ft);
    
# ifdef  __MINGW32__
    now.ul -= 116444736000000000ULL;
# else
    now.ul -= 116444736000000000UI64;
# endif
    r.t = ((uint64_t)now.ul) * (OSSL_TIME_SECOND / 10000000);
#else   
    struct timeval t;

    if (gettimeofday(&t, NULL) < 0) {
        ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
                       "calling gettimeofday()");
        return ossl_time_zero();
    }
    if (t.tv_sec <= 0)
        r.t = t.tv_usec <= 0 ? 0 : t.tv_usec * OSSL_TIME_US;
    else
        r.t = ((uint64_t)t.tv_sec * 1000000 + t.tv_usec) * OSSL_TIME_US;
#endif  
    return r;
}
