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curl/lib/timeval.h
Daniel Stenberg b1616dad8f
timediff: make it 64 bit (if possible) even with 32 bit time_t
... to make it hold microseconds too.

Fixes #4165
Closes #4168
2019-08-01 07:43:24 +02:00

59 lines
2.1 KiB
C

#ifndef HEADER_CURL_TIMEVAL_H
#define HEADER_CURL_TIMEVAL_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2019, 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 https://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.
*
***************************************************************************/
#include "curl_setup.h"
/* Use a larger type even for 32 bit time_t systems so that we can keep
microsecond accuracy in it */
typedef curl_off_t timediff_t;
#define CURL_FORMAT_TIMEDIFF_T CURL_FORMAT_CURL_OFF_T
#define TIMEDIFF_T_MAX CURL_OFF_T_MAX
#define TIMEDIFF_T_MIN CURL_OFF_T_MIN
struct curltime {
time_t tv_sec; /* seconds */
int tv_usec; /* microseconds */
};
struct curltime Curl_now(void);
/*
* Make sure that the first argument (t1) is the more recent time and t2 is
* the older time, as otherwise you get a weird negative time-diff back...
*
* Returns: the time difference in number of milliseconds.
*/
timediff_t Curl_timediff(struct curltime t1, struct curltime t2);
/*
* Make sure that the first argument (t1) is the more recent time and t2 is
* the older time, as otherwise you get a weird negative time-diff back...
*
* Returns: the time difference in number of microseconds.
*/
timediff_t Curl_timediff_us(struct curltime newer, struct curltime older);
#endif /* HEADER_CURL_TIMEVAL_H */