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 /** POSIX wrapper for THREADX */
17 /** */
18 /** */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 /* Include necessary system files. */
24
25 #include "tx_api.h" /* Threadx API */
26 #include "pthread.h" /* Posix API */
27 #include "px_int.h" /* Posix helper functions */
28
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* pthread_mutex_destroy PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function shall destroy the mutex object referenced by mutex; */
43 /* the mutex object becomes,in effect, uninitialized.A destroyed mutex */
44 /* object can be reinitialized using pthread_mutex_init() */
45 /* It shall be safe to destroy an initialized mutex that is unlocked. */
46 /* Attempting to destroy a locked mutex results in undefined behavior. */
47 /* */
48 /* INPUT */
49 /* */
50 /* mutex Address of the mutex */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* 0 If successful */
55 /* Value In case of any error */
56 /* */
57 /* CALLS */
58 /* */
59 /* tx_mutex_delete ThreadX Mutex service */
60 /* */
61 /* CALLED BY */
62 /* */
63 /* Application Code */
64 /* */
65 /* RELEASE HISTORY */
66 /* */
67 /* DATE NAME DESCRIPTION */
68 /* */
69 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
70 /* */
71 /**************************************************************************/
pthread_mutex_destroy(pthread_mutex_t * mutex)72 INT pthread_mutex_destroy(pthread_mutex_t *mutex)
73 {
74
75 TX_INTERRUPT_SAVE_AREA
76
77 TX_MUTEX *mutex_ptr;
78 INT status,retval;
79
80 /* Disable interrupts. */
81 TX_DISABLE
82
83 mutex_ptr = (TX_MUTEX*) mutex;
84
85 status = tx_mutex_delete(mutex_ptr);
86 if (status == TX_SUCCESS)
87 {
88 mutex->in_use = TX_FALSE;
89 retval = OK;
90 }
91 else
92 {
93 posix_errno = EINVAL;
94 posix_set_pthread_errno(EINVAL);
95 retval = EINVAL;
96 }
97
98 TX_RESTORE
99 return(retval);
100 }
101
