|
1
by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
1 |
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved |
|
2
by Francesco Paolo Lovergine
* Alligned to linux main manpages edition. |
2 |
.TH "PTHREAD_RWLOCKATTR_DESTROY" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual" |
|
1
by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
3 |
.\" pthread_rwlockattr_destroy |
4 |
.SH NAME |
|
5 |
pthread_rwlockattr_destroy, pthread_rwlockattr_init \- destroy and
|
|
6 |
initialize the read\-write lock attributes
|
|
7 |
object |
|
8 |
.SH SYNOPSIS |
|
9 |
.LP
|
|
10 |
\fB#include <pthread.h>
|
|
11 |
.br
|
|
12 |
.sp
|
|
13 |
int pthread_rwlockattr_destroy(pthread_rwlockattr_t\fP \fI*attr\fP\fB); |
|
14 |
.br
|
|
15 |
int pthread_rwlockattr_init(pthread_rwlockattr_t\fP \fI*attr\fP\fB); |
|
16 |
\fP
|
|
17 |
\fB
|
|
18 |
.br
|
|
19 |
\fP
|
|
20 |
.SH DESCRIPTION |
|
21 |
.LP
|
|
22 |
The \fIpthread_rwlockattr_destroy\fP() function shall destroy a read-write |
|
23 |
lock attributes object. A destroyed \fIattr\fP |
|
24 |
attributes object can be reinitialized using \fIpthread_rwlockattr_init\fP(); |
|
25 |
the results of otherwise referencing the object |
|
26 |
after it has been destroyed are undefined. An implementation may cause |
|
27 |
\fIpthread_rwlockattr_destroy\fP() to set the object |
|
28 |
referenced by \fIattr\fP to an invalid value. |
|
29 |
.LP
|
|
30 |
The \fIpthread_rwlockattr_init\fP() function shall initialize a read-write |
|
31 |
lock attributes object \fIattr\fP with the default |
|
32 |
value for all of the attributes defined by the implementation. |
|
33 |
.LP
|
|
34 |
Results are undefined if \fIpthread_rwlockattr_init\fP() is called |
|
35 |
specifying an already initialized \fIattr\fP attributes |
|
36 |
object. |
|
37 |
.LP
|
|
38 |
After a read-write lock attributes object has been used to initialize |
|
39 |
one or more read-write locks, any function affecting the |
|
40 |
attributes object (including destruction) shall not affect any previously |
|
41 |
initialized read-write locks. |
|
42 |
.SH RETURN VALUE |
|
43 |
.LP
|
|
44 |
If successful, the \fIpthread_rwlockattr_destroy\fP() and \fIpthread_rwlockattr_init\fP() |
|
45 |
functions shall return zero; |
|
46 |
otherwise, an error number shall be returned to indicate the error. |
|
47 |
.SH ERRORS |
|
48 |
.LP
|
|
49 |
The \fIpthread_rwlockattr_destroy\fP() function may fail if: |
|
50 |
.TP 7 |
|
51 |
.B EINVAL |
|
52 |
The value specified by \fIattr\fP is invalid. |
|
53 |
.sp
|
|
54 |
.LP
|
|
55 |
The \fIpthread_rwlockattr_init\fP() function shall fail if: |
|
56 |
.TP 7 |
|
57 |
.B ENOMEM |
|
58 |
Insufficient memory exists to initialize the read-write lock attributes |
|
59 |
object. |
|
60 |
.sp
|
|
61 |
.LP
|
|
62 |
These functions shall not return an error code of [EINTR]. |
|
63 |
.LP
|
|
64 |
\fIThe following sections are informative.\fP |
|
65 |
.SH EXAMPLES |
|
66 |
.LP
|
|
67 |
None. |
|
68 |
.SH APPLICATION USAGE |
|
69 |
.LP
|
|
70 |
None. |
|
71 |
.SH RATIONALE |
|
72 |
.LP
|
|
73 |
None. |
|
74 |
.SH FUTURE DIRECTIONS |
|
75 |
.LP
|
|
76 |
None. |
|
77 |
.SH SEE ALSO |
|
78 |
.LP
|
|
79 |
\fIpthread_rwlock_destroy\fP() , \fIpthread_rwlockattr_getpshared\fP() |
|
80 |
, \fIpthread_rwlockattr_setpshared\fP() , the Base Definitions volume |
|
81 |
of |
|
82 |
IEEE\ Std\ 1003.1-2001, \fI<pthread.h>\fP |
|
83 |
.SH COPYRIGHT |
|
84 |
Portions of this text are reprinted and reproduced in electronic form |
|
85 |
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology |
|
86 |
-- Portable Operating System Interface (POSIX), The Open Group Base |
|
87 |
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of |
|
88 |
Electrical and Electronics Engineers, Inc and The Open Group. In the |
|
89 |
event of any discrepancy between this version and the original IEEE and |
|
90 |
The Open Group Standard, the original IEEE and The Open Group Standard |
|
91 |
is the referee document. The original Standard can be obtained online at |
|
92 |
http://www.opengroup.org/unix/online.html . |