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_setpshared 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 pshared attribute. */
43 /* */
44 /* */
45 /* INPUT */
46 /* */
47 /* attr Pointer to the mutex attributes */
48 /* pshared mutex pshared attr */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* 0 If successful */
53 /* Value In case of any error */
54 /* */
55 /* CALLS */
56 /* */
57 /* None */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* Application Code */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
68 /* */
69 /**************************************************************************/
pthread_mutexattr_setpshared(pthread_mutexattr_t * attr,INT pshared)70 INT pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, INT pshared)
71 {
72
73 /* First check the attribute object is already destroyed? */
74 if (attr->in_use == TX_FALSE)
75 {
76 posix_errno = EINVAL;
77 posix_set_pthread_errno(EINVAL);
78 return(EINVAL);
79 }
80 else
81 {
82 if ((pshared == PTHREAD_PROCESS_PRIVATE)||(pshared == PTHREAD_PROCESS_SHARED) )
83 {
84 attr->type = pshared;
85 return(OK);
86 }
87 else
88 {
89 posix_errno = ENOSYS;
90 posix_set_pthread_errno(ENOSYS);
91 return(ENOSYS);
92 }
93 }
94 }
95
