1POSIX_TRACE_ATTR_DESTROY(P)POSIX Programmer's ManualPOSIX_TRACE_ATTR_DESTROY(P)
2
3
4

NAME

6       posix_trace_attr_destroy,  posix_trace_attr_init - destroy and initial‐
7       ize the trace stream attributes object (TRACING)
8

SYNOPSIS

10       #include <trace.h>
11
12       int posix_trace_attr_destroy(trace_attr_t *attr);
13       int posix_trace_attr_init(trace_attr_t *attr);
14
15

DESCRIPTION

17       The posix_trace_attr_destroy() function shall  destroy  an  initialized
18       trace  attributes  object.  A  destroyed  attr attributes object can be
19       reinitialized using posix_trace_attr_init(); the results  of  otherwise
20       referencing the object after it has been destroyed are undefined.
21
22       The   posix_trace_attr_init()   function   shall   initialize  a  trace
23       attributes object attr with the default value for all of the individual
24       attributes  used  by  a given implementation. The read-only generation-
25       version and clock-resolution attributes of the newly initialized  trace
26       attributes  object  shall be set to their appropriate values (see Trace
27       Stream Attributes ).
28
29       Results are undefined if posix_trace_attr_init() is  called  specifying
30       an already initialized attr attributes object.
31
32       Implementations  may  add  extensions  to  the  trace attributes object
33       structure  as   permitted   in   the   Base   Definitions   volume   of
34       IEEE Std 1003.1-2001, Chapter 2, Conformance.
35
36       The  resulting attributes object (possibly modified by setting individ‐
37       ual attributes values), when used by posix_trace_create(), defines  the
38       attributes  of the trace stream created. A single attributes object can
39       be used in multiple calls to posix_trace_create().  After one  or  more
40       trace  streams  have been created using an attributes object, any func‐
41       tion affecting that attributes object, including destruction, shall not
42       affect  any  trace stream previously created. An initialized attributes
43       object also serves to receive  the  attributes  of  an  existing  trace
44       stream or trace log when calling the posix_trace_get_attr() function.
45

RETURN VALUE

47       Upon  successful  completion,  these  functions shall return a value of
48       zero. Otherwise, they shall return the corresponding error number.
49

ERRORS

51       The posix_trace_attr_destroy() function may fail if:
52
53       EINVAL The value of attr is invalid.
54
55
56       The posix_trace_attr_init() function shall fail if:
57
58       ENOMEM Insufficient memory exists to initialize  the  trace  attributes
59              object.
60
61
62       The following sections are informative.
63

EXAMPLES

65       None.
66

APPLICATION USAGE

68       None.
69

RATIONALE

71       None.
72

FUTURE DIRECTIONS

74       None.
75

SEE ALSO

77       posix_trace_create() , posix_trace_get_attr() , uname() , the Base Def‐
78       initions volume of IEEE Std 1003.1-2001, <trace.h>
79

81       Portions of this text are reprinted and reproduced in  electronic  form
82       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
83       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
84       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
85       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
86       event of any discrepancy between this version and the original IEEE and
87       The Open Group Standard, the original IEEE and The Open Group  Standard
88       is  the  referee document. The original Standard can be obtained online
89       at http://www.opengroup.org/unix/online.html .
90
91
92
93IEEE/The Open Group                  2003          POSIX_TRACE_ATTR_DESTROY(P)
Impressum