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 /** Semaphore */
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_semaphore.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _txe_semaphore_info_get PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* William E. Lamie, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function checks for errors in the semaphore information get */
45 /* service. */
46 /* */
47 /* INPUT */
48 /* */
49 /* semaphore_ptr Pointer to semaphore control block*/
50 /* name Destination for the semaphore name*/
51 /* current_value Destination for current value of */
52 /* the semaphore */
53 /* first_suspended Destination for pointer of first */
54 /* thread suspended on semaphore */
55 /* suspended_count Destination for suspended count */
56 /* next_semaphore Destination for pointer to next */
57 /* semaphore on the created list */
58 /* */
59 /* OUTPUT */
60 /* */
61 /* TX_SEMAPHORE_ERROR Invalid semaphore pointer */
62 /* status Completion status */
63 /* */
64 /* CALLS */
65 /* */
66 /* _tx_semaphore_info_get Actual semaphore info get service */
67 /* */
68 /* CALLED BY */
69 /* */
70 /* Application Code */
71 /* */
72 /* RELEASE HISTORY */
73 /* */
74 /* DATE NAME DESCRIPTION */
75 /* */
76 /* 05-19-2020 William E. Lamie Initial Version 6.0 */
77 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
78 /* resulting in version 6.1 */
79 /* */
80 /**************************************************************************/
_txe_semaphore_info_get(TX_SEMAPHORE * semaphore_ptr,CHAR ** name,ULONG * current_value,TX_THREAD ** first_suspended,ULONG * suspended_count,TX_SEMAPHORE ** next_semaphore)81 UINT _txe_semaphore_info_get(TX_SEMAPHORE *semaphore_ptr, CHAR **name, ULONG *current_value,
82 TX_THREAD **first_suspended, ULONG *suspended_count,
83 TX_SEMAPHORE **next_semaphore)
84 {
85
86 UINT status;
87
88
89 /* Check for an invalid semaphore pointer. */
90 if (semaphore_ptr == TX_NULL)
91 {
92
93 /* Semaphore pointer is invalid, return appropriate error code. */
94 status = TX_SEMAPHORE_ERROR;
95 }
96
97 /* Now check for a valid semaphore ID. */
98 else if (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)
99 {
100
101 /* Semaphore pointer is invalid, return appropriate error code. */
102 status = TX_SEMAPHORE_ERROR;
103 }
104 else
105 {
106
107 /* Otherwise, call the actual semaphore information get service. */
108 status = _tx_semaphore_info_get(semaphore_ptr, name, current_value, first_suspended,
109 suspended_count, next_semaphore);
110 }
111
112 /* Return completion status. */
113 return(status);
114 }
115
116
