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 /* FUNCTION RELEASE */
31 /* */
32 /* pthread_cond_destroy PORTABLE C */
33 /* 6.1.7 */
34 /* AUTHOR */
35 /* */
36 /* William E. Lamie, Microsoft Corporation */
37 /* */
38 /* DESCRIPTION */
39 /* */
40 /* The pthread_cond_destroy function shall destroy the given condition */
41 /* variable specified by cond; the object becomes, in effect, */
42 /* uninitialized. */
43 /* A destroyed condition variable object can be reinitialized using */
44 /* pthread_cond_init;referencing the object after it has been destroyed*/
45 /* returns error. */
46 /* */
47 /* INPUT */
48 /* */
49 /* cond condition variable object */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* OK If successful */
54 /* EINVAL If error */
55 /* */
56 /* CALLS */
57 /* */
58 /* tx_semaphore_delete Deletes a semaphore internal to */
59 /* to the cond variable */
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_cond_destroy(pthread_cond_t * cond)72 INT pthread_cond_destroy(pthread_cond_t *cond)
73 {
74
75 TX_SEMAPHORE *semaphore_ptr;
76 UINT status;
77
78 if (cond->in_use == TX_FALSE)
79 {
80 posix_errno = EINVAL;
81 posix_set_pthread_errno(EINVAL);
82 return(EINVAL);
83 }
84 else
85 {
86 cond->in_use = TX_FALSE;
87 /* Get the condition variable's internal semaphore. */
88 /* Simply convert the Condition variable control block into a semaphore a cast */
89 semaphore_ptr = (&( cond->cond_semaphore ));
90 status = tx_semaphore_delete(semaphore_ptr);
91 if (status != TX_SUCCESS)
92 {
93 posix_errno = EINVAL;
94 posix_set_pthread_errno(EINVAL);
95 return(EINVAL);
96 }
97 return(OK);
98 }
99 }
100
101
