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 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _ux_utility_semaphore_create PORTABLE C */
37 /* 6.1.11 */
38 /* AUTHOR */
39 /* */
40 /* Chaoqiong Xiao, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function creates a semaphore. */
45 /* */
46 /* INPUT */
47 /* */
48 /* semaphore Semaphore to create */
49 /* semaphore_name Semaphore name */
50 /* initial_count Initial semaphore count */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* Completion Status */
55 /* */
56 /* CALLS */
57 /* */
58 /* tx_semaphore_create ThreadX semaphore create */
59 /* */
60 /* CALLED BY */
61 /* */
62 /* USBX Components */
63 /* */
64 /* RELEASE HISTORY */
65 /* */
66 /* DATE NAME DESCRIPTION */
67 /* */
68 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
69 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
70 /* used UX prefix to refer to */
71 /* TX symbols instead of using */
72 /* them directly, */
73 /* resulting in version 6.1 */
74 /* 04-25-2022 Chaoqiong Xiao Modified comment(s), */
75 /* off in standalone build, */
76 /* resulting in version 6.1.11 */
77 /* */
78 /**************************************************************************/
_ux_utility_semaphore_create(UX_SEMAPHORE * semaphore,CHAR * semaphore_name,UINT initial_count)79 UINT _ux_utility_semaphore_create(UX_SEMAPHORE *semaphore, CHAR *semaphore_name, UINT initial_count)
80 {
81
82 UINT status;
83
84 /* Call ThreadX to create the semaphore. */
85 status = tx_semaphore_create(semaphore, (CHAR *) semaphore_name, initial_count);
86
87 /* Check for status. */
88 if (status != UX_SUCCESS)
89 {
90
91 /* Error trap. */
92 _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_UTILITY, status);
93
94 /* If trace is enabled, insert this event into the trace buffer. */
95 UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_SEMAPHORE_ERROR, semaphore, 0, 0, UX_TRACE_ERRORS, 0, 0)
96
97 }
98
99 /* Return completion status. */
100 return(status);
101 }
102 #endif
103
