/*-
 * Copyright (c) 2014-2020 MongoDB, Inc.
 * Copyright (c) 2008-2014 WiredTiger, Inc.
 *	All rights reserved.
 *
 * See the file LICENSE for redistribution information.
 */

#include "wt_internal.h"

/*
 * __wt_epoch_raw --
 *     Return the time since the Epoch as reported by a system call.
 */
void
__wt_epoch_raw(WT_SESSION_IMPL *session, struct timespec *tsp)
  WT_GCC_FUNC_ATTRIBUTE((visibility("default")))
{
    WT_DECL_RET;

    /*
     * This function doesn't return an error, but panics on failure (which should never happen, it's
     * done this way to simplify error handling in the caller). However, some compilers complain
     * about using garbage values. Initializing the values avoids the complaint.
     */
    tsp->tv_sec = 0;
    tsp->tv_nsec = 0;

#if defined(HAVE_CLOCK_GETTIME)
    WT_SYSCALL_RETRY(clock_gettime(CLOCK_REALTIME, tsp), ret);
    if (ret == 0)
        return;
    WT_IGNORE_RET(__wt_panic(session, ret, "clock_gettime"));
#elif defined(HAVE_GETTIMEOFDAY)
    {
        struct timeval v;

        WT_SYSCALL_RETRY(gettimeofday(&v, NULL), ret);
        if (ret == 0) {
            tsp->tv_sec = v.tv_sec;
            tsp->tv_nsec = v.tv_usec * WT_THOUSAND;
            return;
        }
        WT_IGNORE_RET(__wt_panic(session, ret, "gettimeofday"));
    }
#else
    NO TIME - OF - DAY IMPLEMENTATION : see src / os_posix / os_time.c
#endif
}

/*
 * __wt_localtime --
 *     Return the current local broken-down time.
 */
int
__wt_localtime(WT_SESSION_IMPL *session, const time_t *timep, struct tm *result)
  WT_GCC_FUNC_ATTRIBUTE((visibility("default")))
{
    if (localtime_r(timep, result) != NULL)
        return (0);

    WT_RET_MSG(session, __wt_errno(), "localtime_r");
}