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_detach PORTABLE C */
35 /* 6.1.7 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* */
43 /* The pthread_detach() function indicates that system resources for */
44 /* the specified thread should be reclaimed when the thread ends. */
45 /* If the thread is already ended, resources are reclaimed immediately.*/
46 /* This routine does not cause the thread to end. */
47 /* After pthread_detach() has been issued, it is not valid to try to */
48 /* pthread_join() with the target thread. */
49 /* Eventually, you should call pthread_join() or pthread_detach() for */
50 /* every thread that is created joinable (with a detachstate of */
51 /* PTHREAD_CREATE_JOINABLE)so that the system can reclaim all resources*/
52 /* associated with the thread. Failure to join to or detach joinable */
53 /* threads will result in memory and other resource leaks until the */
54 /* process ends. If thread doesn't represent a valid undetached thread,*/
55 /* pthread_detach() will return ESRCH. */
56 /* */
57 /* */
58 /* INPUT */
59 /* */
60 /* thread pthread handle to the target thread */
61 /* */
62 /* */
63 /* OUTPUT */
64 /* */
65 /* zero If successful */
66 /* error number If fails */
67 /* */
68 /* CALLS */
69 /* */
70 /* */
71 /* CALLED BY */
72 /* */
73 /* Application Code */
74 /* */
75 /* RELEASE HISTORY */
76 /* */
77 /* DATE NAME DESCRIPTION */
78 /* */
79 /* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
80 /* */
81 /**************************************************************************/
pthread_detach(pthread_t thread)82 INT pthread_detach(pthread_t thread)
83
84 {
85
86 TX_INTERRUPT_SAVE_AREA
87
88 POSIX_TCB *pthread_ptr;
89
90 TX_DISABLE
91
92 pthread_ptr = posix_tid2tcb(thread);
93 if(pthread_ptr==NULL)
94 {
95 TX_RESTORE
96 return(ESRCH);
97 }
98 if(pthread_ptr->is_detached==TX_TRUE)
99 {
100 TX_RESTORE
101 return (EINVAL);
102 }
103 pthread_ptr->is_detached = TX_TRUE;
104
105 TX_RESTORE
106 return(OK);
107 }
108
