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 /** ThreadX Component */
17 /** */
18 /** Thread */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 #define TX_SOURCE_CODE
24
25
26 /* Include necessary system files. */
27
28 #include "tx_api.h"
29 #include "tx_thread.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _txe_thread_relinquish PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* William E. Lamie, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function checks to make sure a thread is executing before the */
45 /* relinquish is executed. */
46 /* */
47 /* INPUT */
48 /* */
49 /* None */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* None */
54 /* */
55 /* CALLS */
56 /* */
57 /* _tx_thread_relinquish Actual thread relinquish call */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* Application Code */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 William E. Lamie Initial Version 6.0 */
68 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
69 /* resulting in version 6.1 */
70 /* */
71 /**************************************************************************/
_txe_thread_relinquish(VOID)72 VOID _txe_thread_relinquish(VOID)
73 {
74
75 TX_THREAD *current_thread;
76
77
78 /* Pickup thread pointer. */
79 TX_THREAD_GET_CURRENT(current_thread)
80
81 /* Make sure a thread is executing. */
82 if (current_thread != TX_NULL)
83 {
84
85 /* Now make sure the call is not from an ISR or Initialization. */
86 if (TX_THREAD_GET_SYSTEM_STATE() == ((ULONG) 0))
87 {
88
89 /* Okay to call the real relinquish function. */
90 _tx_thread_relinquish();
91 }
92 }
93 }
94
95
