NS/dev/performance-3.0.5/source/curl/lib/timeval.c

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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id: timeval.c,v 1.17 2003/01/29 10:14:24 bagder Exp $
***************************************************************************/
#ifdef WIN32
#include <windows.h>
#endif
#include "timeval.h"
#ifndef HAVE_GETTIMEOFDAY
#ifdef WIN32
int
gettimeofday (struct timeval *tp, void *nothing)
{
#ifdef WITHOUT_MM_LIB
SYSTEMTIME st;
time_t tt;
struct tm tmtm;
/* mktime converts local to UTC */
GetLocalTime (&st);
tmtm.tm_sec = st.wSecond;
tmtm.tm_min = st.wMinute;
tmtm.tm_hour = st.wHour;
tmtm.tm_mday = st.wDay;
tmtm.tm_mon = st.wMonth - 1;
tmtm.tm_year = st.wYear - 1900;
tmtm.tm_isdst = -1;
tt = mktime (&tmtm);
tp->tv_sec = tt;
tp->tv_usec = st.wMilliseconds * 1000;
#else
/**
** The earlier time calculations using GetLocalTime
** had a time resolution of 10ms.The timeGetTime, part
** of multimedia apis offer a better time resolution
** of 1ms.Need to link against winmm.lib for this
**/
unsigned long Ticks = 0;
unsigned long Sec =0;
unsigned long Usec = 0;
Ticks = timeGetTime();
Sec = Ticks/1000;
Usec = (Ticks - (Sec*1000))*1000;
tp->tv_sec = Sec;
tp->tv_usec = Usec;
#endif
return 1;
}
#define HAVE_GETTIMEOFDAY
#endif
#endif
struct timeval Curl_tvnow (void)
{
struct timeval now;
#ifdef HAVE_GETTIMEOFDAY
gettimeofday (&now, NULL);
#else
now.tv_sec = (long) time(NULL);
now.tv_usec = 0;
#endif
return now;
}
/*
* Make sure that the first argument is the more recent time, as otherwise
* we'll get a weird negative time-diff back...
*/
long Curl_tvdiff (struct timeval newer, struct timeval older)
{
return (newer.tv_sec-older.tv_sec)*1000+
(499+newer.tv_usec-older.tv_usec)/1000;
}
long Curl_tvlong (struct timeval t1)
{
return t1.tv_sec;
}