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_attr_setschedparam                          PORTABLE C      */
35 /*                                                           6.1.7        */
36 /*  AUTHOR                                                                */
37 /*                                                                        */
38 /*    William E. Lamie, Microsoft Corporation                             */
39 /*                                                                        */
40 /*  DESCRIPTION                                                           */
41 /*                                                                        */
42 /*    This function sets the scheduling parameters attribute for the      */
43 /*    pthread attributes object.                                          */
44 /*                                                                        */
45 /*                                                                        */
46 /*  INPUT                                                                 */
47 /*                                                                        */
48 /*    attr                           Address of the thread attributes     */
49 /*    sched_param                    Address of structure containing the  */
50 /*                                   scheduling parameters to set         */
51 /*                                                                        */
52 /*                                                                        */
53 /*  OUTPUT                                                                */
54 /*                                                                        */
55 /*     0                             if successful                        */
56 /*     Value                         in case of any error                 */
57 /*                                                                        */
58 /*  CALLS                                                                 */
59 /*                                                                        */
60 /*    None                                                                */
61 /*                                                                        */
62 /*  CALLED BY                                                             */
63 /*                                                                        */
64 /*    Application Code                                                    */
65 /*                                                                        */
66 /*  RELEASE HISTORY                                                       */
67 /*                                                                        */
68 /*    DATE              NAME                      DESCRIPTION             */
69 /*                                                                        */
70 /*  06-02-2021     William E. Lamie         Initial Version 6.1.7         */
71 /*                                                                        */
72 /**************************************************************************/
pthread_attr_setschedparam(pthread_attr_t * attr,struct sched_param * param)73 INT pthread_attr_setschedparam(pthread_attr_t *attr,struct sched_param *param)
74 {
75     /* First check the attribute object is already destroyed? */
76     if (attr->inuse == TX_FALSE)
77     {
78         posix_errno = EINVAL;
79         posix_set_pthread_errno(EINVAL);
80         return(EINVAL);
81     }
82     if (param->sched_priority == 0)
83     {
84         posix_errno = EINVAL;
85         posix_set_pthread_errno(EINVAL);
86         return(EINVAL);
87     }
88     if(param->sched_priority >= PX_LOWEST_PRIORITY &&  param->sched_priority <= PX_HIGHEST_PRIORITY  )
89     {
90 
91         attr->sched_attr.sched_priority = param->sched_priority;
92     }
93     return(OK);
94 }
95 
96