utility/rtos_compatibility_layers/posix/px_clock_settime.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75

/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** POSIX wrapper for THREADX                                             */
/**                                                                       */
/**                                                                       */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

/* Include necessary system files.  */

#include "tx_api.h"     /* Threadx API */
#include "pthread.h"    /* Posix API */
#include "px_int.h"     /* Posix helper functions */


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    clock_settime                                        PORTABLE C     */
/*                                                           6.1.7        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This subroutine sets the internal Threadx timer tick variable       */
/*    to the time specificed in the tspec variable after conversion       */
/*    if tspec->tv_sec is 0 the clock with be set to the value of         */
/*    tspec->tv_nsec                                                      */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    clockid_t, tspec                                                    */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*     error code                                                         */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    tx_time_set                          ThreadX function               */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*                                                                        */
/**************************************************************************/
INT clock_settime(clockid_t t, const struct timespec * tspec)
{
    ULONG tx_time;

 if(t==CLOCK_REALTIME)
 {
     tx_time=(ULONG)((tspec->tv_sec * CPU_TICKS_PER_SECOND) + (tspec->tv_nsec / NANOSECONDS_IN_CPU_TICK));
     tx_time_set( tx_time);
     return(OK);
 }
 else return(EINVAL);
}