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 /* pthread_mutexattr_destroy PORTABLE C */
34 /* 6.1.7 */
35 /* AUTHOR */
36 /* */
37 /* William E. Lamie, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This function shall destroy a mutex attributes object; the object */
42 /* becomes,in effect,uninitialized.A destroyed attr attributes object */
43 /* can be reinitialized using pthread_mutexattr_init(); */
44 /* */
45 /* */
46 /* INPUT */
47 /* */
48 /* attr Address of the mutex attributes */
49 /* object to be destroyed. */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* 0 If successful */
54 /* Value In case of any error or the results */
55 /* of referencing the object after it */
56 /* has been destroyed. */
57 /* */
58 /* CALLS */
59 /* */
60 /* None */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
71 /* */
72 /**************************************************************************/
pthread_mutexattr_destroy(pthread_mutexattr_t * attr)73 INT pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
74 {
75
76 /* Clear the flag and make this pthread_mutexattr structure free */
77 /* First check the attribute object is already destroyed? */
78 if (attr->in_use == TX_FALSE)
79 {
80 posix_errno = EINVAL;
81 posix_set_pthread_errno(EINVAL);
82 return(EINVAL);
83 }
84 else
85 {
86 /* No then destroy the attributes object */
87 attr->in_use = TX_FALSE;
88 return(OK);
89 }
90 }
91
