/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
**/

#include "lld.h"

/******************************************************************************
 *                                                                            *
 * Function: lld_field_str_rollback                                           *
 *                                                                            *
 * Author: Alexander Vladishev                                                *
 *                                                                            *
 ******************************************************************************/
void	lld_field_str_rollback(char **field, char **field_orig, zbx_uint64_t *flags, zbx_uint64_t flag)
{
	if (0 == (*flags & flag))
		return;

	zbx_free(*field);
	*field = *field_orig;
	*field_orig = NULL;
	*flags &= ~flag;
}

/******************************************************************************
 *                                                                            *
 * Function: lld_field_uint64_rollback                                        *
 *                                                                            *
 * Author: Alexander Vladishev                                                *
 *                                                                            *
 ******************************************************************************/
void	lld_field_uint64_rollback(zbx_uint64_t *field, zbx_uint64_t *field_orig, zbx_uint64_t *flags, zbx_uint64_t flag)
{
	if (0 == (*flags & flag))
		return;

	*field = *field_orig;
	*field_orig = 0;
	*flags &= ~flag;
}

/******************************************************************************
 *                                                                            *
 * Function: lld_end_of_life                                                  *
 *                                                                            *
 * Purpose: calculate when to delete lost resources in an overflow-safe way   *
 *                                                                            *
 ******************************************************************************/
int	lld_end_of_life(int lastcheck, int lifetime)
{
	return ZBX_JAN_2038 - lastcheck > lifetime ? lastcheck + lifetime : ZBX_JAN_2038;
}
