blob: e3de0a8589de0e62671b8af2e02c6093a2746785 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
/* Include necessary system files. */
#include "tx_api.h"
#include "tx_thread.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txe_thread_preemption_change PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks for errors in the preemption threshold change */
/* function call. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to thread */
/* new_threshold New preemption threshold */
/* old_threshold Old preemption threshold */
/* */
/* OUTPUT */
/* */
/* TX_THREAD_ERROR Invalid thread pointer */
/* TX_PTR_ERROR Invalid old threshold pointer */
/* TX_CALLER_ERROR Invalid caller of function */
/* status Actual completion status */
/* */
/* CALLS */
/* */
/* _tx_thread_preemption_change Actual preempt change function*/
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
UINT _txe_thread_preemption_change(TX_THREAD *thread_ptr, UINT new_threshold, UINT *old_threshold)
{
UINT status;
/* Check for an invalid thread pointer. */
if (thread_ptr == TX_NULL)
{
/* Thread pointer is invalid, return appropriate error code. */
status = TX_THREAD_ERROR;
}
/* Now check for invalid thread ID. */
else if (thread_ptr -> tx_thread_id != TX_THREAD_ID)
{
/* Thread pointer is invalid, return appropriate error code. */
status = TX_THREAD_ERROR;
}
/* Check for a valid old threshold pointer. */
else if (old_threshold == TX_NULL)
{
/* Invalid destination pointer, return appropriate error code. */
status = TX_PTR_ERROR;
}
/* Check for invalid caller of this function. */
else if (TX_THREAD_GET_SYSTEM_STATE() != ((ULONG) 0))
{
/* Invalid caller of this function, return appropriate error code. */
status = TX_CALLER_ERROR;
}
/* Determine if the preemption-threshold is valid. */
else if (new_threshold > thread_ptr -> tx_thread_user_priority)
{
/* Return an error status. */
status = TX_THRESH_ERROR;
}
else
{
/* Call actual change thread preemption function. */
status = _tx_thread_preemption_change(thread_ptr, new_threshold, old_threshold);
}
/* Return completion status. */
return(status);
}
|
