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 /* sleep PORTABLE C */
34 /* 6.1.7 */
35 /* AUTHOR */
36 /* */
37 /* William E. Lamie, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This function shall cause the calling thread to be suspended from */
42 /* execution until either the number of realtime seconds specified by */
43 /* the argument seconds has elapsed */
44 /* */
45 /* INPUT */
46 /* */
47 /* seconds Is the number of real-time (as opposed */
48 /* to CPU-time) seconds to suspend the */
49 /* calling thread. */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* number of seconds remaining to sleep */
54 /* A nonzero value indicates sleep was */
55 /* interrupted. Zero is successful */
56 /* completion */
57 /* */
58 /* */
59 /* CALLS */
60 /* */
61 /* tx_thread_sleep ThreadX thread sleep service */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* Application Code */
66 /* */
67 /* RELEASE HISTORY */
68 /* */
69 /* DATE NAME DESCRIPTION */
70 /* */
71 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
72 /* */
73 /**************************************************************************/
sleep(ULONG seconds)74 UINT sleep(ULONG seconds)
75 {
76
77 UINT temp1, temp2, diff, result;
78
79 temp1 = tx_time_get();
80 tx_thread_sleep(seconds * CPU_TICKS_PER_SECOND);
81 temp2 = tx_time_get();
82 diff = temp2 - temp1;
83
84 if (diff > (seconds * CPU_TICKS_PER_SECOND))
85 {
86 result = (diff - (seconds * CPU_TICKS_PER_SECOND));
87 }
88 else
89 {
90 result = ((seconds * CPU_TICKS_PER_SECOND) - diff);
91 }
92
93 return (result/CPU_TICKS_PER_SECOND);
94
95 }
96
97
