1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** POSIX wrapper for THREADX */
17 /** */
18 /** */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 /* Include necessary system files. */
24
25 #include "tx_api.h" /* Threadx API */
26 #include "pthread.h" /* Posix API */
27 #include "px_int.h" /* Posix helper functions */
28
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* clock_gettime PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This subroutine returns the time. The source of the time */
43 /* is the internal Threadx timer variable, which keeps track */
44 /* of the number of ticks of the Threadx timer ISR. */
45 /* */
46 /* INPUT */
47 /* */
48 /* clockid_t, tspec */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* error code */
53 /* */
54 /* CALLS */
55 /* */
56 /* tx_time_get ThreadX function */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
67 /* */
68 /**************************************************************************/
clock_gettime(clockid_t t,struct timespec * tspec)69 INT clock_gettime(clockid_t t, struct timespec * tspec)
70 {
71 ULONG tx_time;
72
73 if(t==CLOCK_REALTIME)
74 {
75 tx_time=tx_time_get();
76
77 tspec->tv_sec = tx_time / CPU_TICKS_PER_SECOND;
78
79 tspec->tv_nsec = (ULONG) ((tx_time - tspec->tv_sec*CPU_TICKS_PER_SECOND) * NANOSECONDS_IN_CPU_TICK);
80
81 return(OK);
82 }
83 else return(EINVAL);
84
85 }
86
