1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** POSIX wrapper for THREADX */
16 /** */
17 /** */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 /* Include necessary system files. */
23
24 #include "tx_api.h" /* Threadx API */
25 #include "pthread.h" /* Posix API */
26 #include "px_int.h" /* Posix helper functions */
27
28
29 /**************************************************************************/
30 /* */
31 /* FUNCTION RELEASE */
32 /* */
33 /* clock_gettime PORTABLE C */
34 /* 6.1.7 */
35 /* AUTHOR */
36 /* */
37 /* William E. Lamie, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This subroutine returns the time. The source of the time */
42 /* is the internal Threadx timer variable, which keeps track */
43 /* of the number of ticks of the Threadx timer ISR. */
44 /* */
45 /* INPUT */
46 /* */
47 /* clockid_t, tspec */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* error code */
52 /* */
53 /* CALLS */
54 /* */
55 /* tx_time_get ThreadX function */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* Application Code */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
66 /* */
67 /**************************************************************************/
clock_gettime(clockid_t t,struct timespec * tspec)68 INT clock_gettime(clockid_t t, struct timespec * tspec)
69 {
70 ULONG tx_time;
71
72 if(t==CLOCK_REALTIME)
73 {
74 tx_time=tx_time_get();
75
76 tspec->tv_sec = tx_time / CPU_TICKS_PER_SECOND;
77
78 tspec->tv_nsec = (ULONG) ((tx_time - tspec->tv_sec*CPU_TICKS_PER_SECOND) * NANOSECONDS_IN_CPU_TICK);
79
80 return(OK);
81 }
82 else return(EINVAL);
83
84 }
85
