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 /** USBX Component */
17 /** */
18 /** Utility */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23
24 /* Include necessary system files. */
25
26 #define UX_SOURCE_CODE
27
28 #include "ux_api.h"
29
30
31 #if !defined(UX_STANDALONE)
32 #include "tx_thread.h"
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_utility_thread_identify PORTABLE C */
38 /* 6.1.11 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function return a pointer to the calling thread. */
46 /* */
47 /* INPUT */
48 /* */
49 /* None */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* Completion Status */
54 /* */
55 /* CALLS */
56 /* */
57 /* tx_thread_identify ThreadX identify function */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* USBX Components */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
68 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
69 /* used UX prefix to refer to */
70 /* TX symbols instead of using */
71 /* them directly, */
72 /* resulting in version 6.1 */
73 /* 04-25-2022 Chaoqiong Xiao Modified comment(s), */
74 /* off in standalone build, */
75 /* resulting in version 6.1.11 */
76 /* */
77 /**************************************************************************/
_ux_utility_thread_identify(VOID)78 UX_THREAD *_ux_utility_thread_identify(VOID)
79 {
80
81
82 /* If we're under interrupt, the thread returned by tx_thread_identify
83 is the thread running prior to the ISR. Instead, we set it to null. */
84 return(UX_THREAD_GET_SYSTEM_STATE() ? UX_NULL : tx_thread_identify());
85 }
86 #endif
87
