93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/****************************************************************************
|
|
* net/utils/net_timeval2dsec.c
|
|
*
|
|
* Copyright (C) 2007, 2008, 2014-2015 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <nuttx/clock.h>
|
|
|
|
#include "utils/utils.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: net_timeval2dsec
|
|
*
|
|
* Description:
|
|
* Convert a struct timeval to deciseconds. Needed by setsockopt() to
|
|
* save new timeout values.
|
|
*
|
|
* Parameters:
|
|
* tv - The struct timeval to convert
|
|
* remainder - Determines how to handler the microsecond remainder
|
|
*
|
|
* Returned Value:
|
|
* The converted value
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
unsigned int net_timeval2dsec(FAR struct timeval *tv,
|
|
enum tv2ds_remainder_e remainder)
|
|
{
|
|
unsigned long adjust = 0;
|
|
|
|
switch (remainder)
|
|
{
|
|
default:
|
|
case TV2DS_TRUNC: /* Truncate microsecond remainder */
|
|
break;
|
|
|
|
case TV2DS_ROUND: /* Round to the nearest full decisecond */
|
|
adjust = (USEC_PER_DSEC / 2);
|
|
break;
|
|
|
|
case TV2DS_CEIL: /* Force to next larger full decisecond */
|
|
adjust = (USEC_PER_DSEC - 1);
|
|
break;
|
|
}
|
|
|
|
return (unsigned int)(tv->tv_sec * DSEC_PER_SEC +
|
|
(tv->tv_usec + adjust) / USEC_PER_DSEC);
|
|
}
|