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_attr_setschedparam                          PORTABLE C      */
34 /*                                                           6.1.7        */
35 /*  AUTHOR                                                                */
36 /*                                                                        */
37 /*    William E. Lamie, Microsoft Corporation                             */
38 /*                                                                        */
39 /*  DESCRIPTION                                                           */
40 /*                                                                        */
41 /*    This function sets the scheduling parameters attribute for the      */
42 /*    pthread attributes object.                                          */
43 /*                                                                        */
44 /*                                                                        */
45 /*  INPUT                                                                 */
46 /*                                                                        */
47 /*    attr                           Address of the thread attributes     */
48 /*    sched_param                    Address of structure containing the  */
49 /*                                   scheduling parameters to set         */
50 /*                                                                        */
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_attr_setschedparam(pthread_attr_t * attr,struct sched_param * param)72 INT pthread_attr_setschedparam(pthread_attr_t *attr,struct sched_param *param)
73 {
74     /* First check the attribute object is already destroyed? */
75     if (attr->inuse == TX_FALSE)
76     {
77         posix_errno = EINVAL;
78         posix_set_pthread_errno(EINVAL);
79         return(EINVAL);
80     }
81     if (param->sched_priority == 0)
82     {
83         posix_errno = EINVAL;
84         posix_set_pthread_errno(EINVAL);
85         return(EINVAL);
86     }
87     if(param->sched_priority >= PX_LOWEST_PRIORITY &&  param->sched_priority <= PX_HIGHEST_PRIORITY  )
88     {
89 
90         attr->sched_attr.sched_priority = param->sched_priority;
91     }
92     return(OK);
93 }
94 
95