blob: 2efc465b77c09ec7c7135845300f327f18be6efa (
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
125
126
127
128
129
130
131
132
|
/***************************************************************************
* 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 */
/** */
/** Module Manager */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_thread.h"
#include "txm_module.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_object_deallocate PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function deallocates a previously allocated object. */
/* */
/* INPUT */
/* */
/* object_ptr Object pointer to deallocate */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _txe_mutex_get Get module instance mutex */
/* _txe_mutex_put Release module instance mutex */
/* _txe_byte_release Release object back to pool */
/* */
/* */
/* CALLED BY */
/* */
/* Application code */
/* */
/**************************************************************************/
UINT _txm_module_manager_object_deallocate(VOID *object_ptr)
{
TXM_MODULE_INSTANCE *module_instance;
TXM_MODULE_ALLOCATED_OBJECT *module_allocated_object_ptr;
UINT return_value;
/* Get module manager protection mutex. */
_txe_mutex_get(&_txm_module_manager_mutex, TX_WAIT_FOREVER);
/* Determine if an object pool was created. */
if (_txm_module_manager_object_pool_created)
{
TXM_MODULE_ALLOCATED_OBJECT *next_object, *previous_object;
/* Pickup module instance pointer. */
module_instance = _tx_thread_current_ptr -> tx_thread_module_instance_ptr;
/* Setup the memory pointer. */
module_allocated_object_ptr = (TXM_MODULE_ALLOCATED_OBJECT *) object_ptr;
/* Position the object pointer backwards to position back to the module manager information. */
previous_object = module_allocated_object_ptr--;
/* Make sure the object is valid. */
if ((module_allocated_object_ptr == TX_NULL) || (module_allocated_object_ptr -> txm_module_allocated_object_module_instance != module_instance) || (module_instance -> txm_module_instance_object_list_count == 0))
{
/* Set return value to invalid pointer. */
return_value = TX_PTR_ERROR;
}
else
{
/* Unlink the node. */
if ((--module_instance -> txm_module_instance_object_list_count) == 0)
{
/* Only allocated object, just set the allocated list to NULL. */
module_instance -> txm_module_instance_object_list_head = TX_NULL;
}
else
{
/* Otherwise, not the only allocated object, link-up the neighbors. */
next_object = module_allocated_object_ptr -> txm_module_allocated_object_next;
previous_object = module_allocated_object_ptr -> txm_module_allocated_object_previous;
next_object -> txm_module_allocated_object_previous = previous_object;
previous_object -> txm_module_allocated_object_next = next_object;
/* See if we have to update the allocated object list head pointer. */
if (module_instance -> txm_module_instance_object_list_head == module_allocated_object_ptr)
{
/* Yes, move the head pointer to the next link. */
module_instance -> txm_module_instance_object_list_head = next_object;
}
}
/* Release the object memory. */
return_value = (ULONG) _txe_byte_release((VOID *) module_allocated_object_ptr);
}
}
else
{
/* Set return value to not enabled. */
return_value = TX_NOT_AVAILABLE;
}
/* Release the protection mutex. */
_txe_mutex_put(&_txm_module_manager_mutex);
return(return_value);
}
|
