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_setpshared 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 pshared attribute. */
42 /* */
43 /* */
44 /* INPUT */
45 /* */
46 /* attr Pointer to the mutex attributes */
47 /* pshared mutex pshared attr */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* 0 If successful */
52 /* Value In case of any error */
53 /* */
54 /* CALLS */
55 /* */
56 /* None */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
67 /* */
68 /**************************************************************************/
pthread_mutexattr_setpshared(pthread_mutexattr_t * attr,INT pshared)69 INT pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, INT pshared)
70 {
71
72 /* First check the attribute object is already destroyed? */
73 if (attr->in_use == TX_FALSE)
74 {
75 posix_errno = EINVAL;
76 posix_set_pthread_errno(EINVAL);
77 return(EINVAL);
78 }
79 else
80 {
81 if ((pshared == PTHREAD_PROCESS_PRIVATE)||(pshared == PTHREAD_PROCESS_SHARED) )
82 {
83 attr->type = pshared;
84 return(OK);
85 }
86 else
87 {
88 posix_errno = ENOSYS;
89 posix_set_pthread_errno(ENOSYS);
90 return(ENOSYS);
91 }
92 }
93 }
94
