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 /* posix_memory_release PORTABLE C */
34 /* 6.1.7 */
35 /* AUTHOR */
36 /* */
37 /* William E. Lamie, Microsoft Corporation */
38 /* */
39 /* DESCRIPTION */
40 /* */
41 /* This function attempts to return the specified memory region back */
42 /* into the POSIX heap. */
43 /* */
44 /* INPUT */
45 /* */
46 /* memory_ptr Memory pointer to return */
47 /* */
48 /* OUTPUT */
49 /* */
50 /* None */
51 /* */
52 /* CALLS */
53 /* */
54 /* tx_byte_release Release the memory */
55 /* posix_internal_error internal error handler */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* POSIX internal code */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
66 /* */
67 /**************************************************************************/
posix_memory_release(VOID * memory_ptr)68 VOID posix_memory_release(VOID * memory_ptr)
69 {
70
71 /* Check if memory_ptr is part of the POSIX byte pool,
72 * if not just return */
73 if (((CHAR *)memory_ptr >=
74 (CHAR *)&posix_heap_byte_pool.tx_byte_pool_start) ||
75 ((CHAR *)memory_ptr <=
76 (CHAR *)posix_heap_byte_pool.tx_byte_pool_start
77 + posix_heap_byte_pool.tx_byte_pool_size)) {
78 tx_byte_release(memory_ptr);
79 }
80
81 /* Return to caller. */
82 return;
83 }
84
