source: trunk/libs/mini-libc/time.h @ 449

Last change on this file since 449 was 449, checked in by alain, 4 years ago

Introduce several missing user libs.

File size: 2.1 KB
Line 
1/*
2 * mman.h - User level <time> library definition.
3 *
4 * Author     Alain Greiner (2016,2017,2018)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#ifndef _TIME_H_
25#define _TIME_H_
26
27/*****************************************************************************************
28 * This file defines the user level, time of day related <time> library.
29 * All these functions make a system call to access the calling thread VMM.
30 * The user/kernel shared structures and mnemonics are defined in
31 * the <syscalls/shared_include/shared_time.h> file.
32 ****************************************************************************************/
33
34#include <shared_time.h>
35
36/*****************************************************************************************
37 * This function returns in the structure <tv>, defined in the time.h file,
38 * the current time (in seconds & micro-seconds).
39 * It is computed from the calling core descriptor.
40 * The timezone is not supported.
41 *****************************************************************************************
42 * @ tv      : pointer on the timeval structure.
43 * @ tz      : pointer on the timezone structure : must be NULL.       
44 * @ return 0 if success / returns -1 if failure.
45 ****************************************************************************************/
46int gettimeofday( struct timeval  * tv,
47                  struct timezone * tz );
48
49
50
51#endif /* _TIME_H_ */
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