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 /* posix_memory_release PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function attempts to return the specified memory region back */
43 /* into the POSIX heap. */
44 /* */
45 /* INPUT */
46 /* */
47 /* memory_ptr Memory pointer to return */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* None */
52 /* */
53 /* CALLS */
54 /* */
55 /* tx_byte_release Release the memory */
56 /* posix_internal_error internal error handler */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* POSIX internal code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
67 /* */
68 /**************************************************************************/
posix_memory_release(VOID * memory_ptr)69 VOID posix_memory_release(VOID * memory_ptr)
70 {
71
72 /* Check if memory_ptr is part of the POSIX byte pool,
73 * if not just return */
74 if (((CHAR *)memory_ptr >=
75 (CHAR *)&posix_heap_byte_pool.tx_byte_pool_start) ||
76 ((CHAR *)memory_ptr <=
77 (CHAR *)posix_heap_byte_pool.tx_byte_pool_start
78 + posix_heap_byte_pool.tx_byte_pool_size)) {
79 tx_byte_release(memory_ptr);
80 }
81
82 /* Return to caller. */
83 return;
84 }
85
