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_mutexattr_setprotocol PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function shall sets the mutex protocol attribute. */
43 /* The protocol of a mutex is contained in the protocol attribute of */
44 /* the mutex attributes */
45 /* */
46 /* */
47 /* INPUT */
48 /* */
49 /* attr Pointer to the mutex attributes */
50 /* protocol mutex protocol */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* 0 If successful */
55 /* Value In case of any error */
56 /* */
57 /* CALLS */
58 /* */
59 /* None */
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_mutexattr_setprotocol(pthread_mutexattr_t * attr,INT protocol)72 INT pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, INT protocol)
73 {
74
75 /* First check the attribute object is already destroyed? */
76 if (attr->in_use == TX_FALSE)
77 {
78 posix_errno = EINVAL;
79 posix_set_pthread_errno(EINVAL);
80 return(EINVAL);
81 }
82 else
83 {
84 if (protocol == PTHREAD_PRIO_INHERIT )
85 {
86 attr->protocol = protocol;
87 return(OK);
88 }
89 else
90 {
91 posix_errno = ENOSYS;
92 posix_set_pthread_errno(ENOSYS);
93 return(ENOSYS);
94 }
95 }
96 }
97
