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_setprotocol PORTABLE C */
34 /* 6.1.7 */
35 /* AUTHOR */
36 /* */
37 /* William E. Lamie, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This function shall sets the mutex protocol attribute. */
42 /* The protocol of a mutex is contained in the protocol attribute of */
43 /* the mutex attributes */
44 /* */
45 /* */
46 /* INPUT */
47 /* */
48 /* attr Pointer to the mutex attributes */
49 /* protocol mutex protocol */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* 0 If successful */
54 /* Value In case of any error */
55 /* */
56 /* CALLS */
57 /* */
58 /* None */
59 /* */
60 /* CALLED BY */
61 /* */
62 /* Application Code */
63 /* */
64 /* RELEASE HISTORY */
65 /* */
66 /* DATE NAME DESCRIPTION */
67 /* */
68 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
69 /* */
70 /**************************************************************************/
pthread_mutexattr_setprotocol(pthread_mutexattr_t * attr,INT protocol)71 INT pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, INT protocol)
72 {
73
74 /* First check the attribute object is already destroyed? */
75 if (attr->in_use == TX_FALSE)
76 {
77 posix_errno = EINVAL;
78 posix_set_pthread_errno(EINVAL);
79 return(EINVAL);
80 }
81 else
82 {
83 if (protocol == PTHREAD_PRIO_INHERIT )
84 {
85 attr->protocol = protocol;
86 return(OK);
87 }
88 else
89 {
90 posix_errno = ENOSYS;
91 posix_set_pthread_errno(ENOSYS);
92 return(ENOSYS);
93 }
94 }
95 }
96
