1POSIX_TRACE_ATTR_DESTROY(3P)POSIX Programmer's ManuaPlOSIX_TRACE_ATTR_DESTROY(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       posix_trace_attr_destroy, posix_trace_attr_init — destroy and  initial‐
14       ize the trace stream attributes object (TRACING)
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SYNOPSIS

17       #include <trace.h>
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19       int posix_trace_attr_destroy(trace_attr_t *attr);
20       int posix_trace_attr_init(trace_attr_t *attr);
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DESCRIPTION

23       The  posix_trace_attr_destroy()  function  shall destroy an initialized
24       trace attributes object.  A destroyed attr  attributes  object  can  be
25       reinitialized  using  posix_trace_attr_init(); the results of otherwise
26       referencing the object after it has been destroyed are undefined.
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28       The  posix_trace_attr_init()  function   shall   initialize   a   trace
29       attributes object attr with the default value for all of the individual
30       attributes used by a given implementation.  The  read-only  generation-
31       version  and clock-resolution attributes of the newly initialized trace
32       attributes object shall be set to their appropriate values (see Section
33       2.11.1.2, posix_trace_status_info Structure).
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35       Results  are  undefined if posix_trace_attr_init() is called specifying
36       an already initialized attr attributes object.
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38       Implementations may add  extensions  to  the  trace  attributes  object
39       structure  as permitted in the Base Definitions volume of POSIX.1‐2008,
40       Chapter 2, Conformance.
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42       The resulting attributes object (possibly modified by setting  individ‐
43       ual  attributes values), when used by posix_trace_create(), defines the
44       attributes of the trace stream created. A single attributes object  can
45       be  used  in multiple calls to posix_trace_create().  After one or more
46       trace streams have been created using an attributes object,  any  func‐
47       tion affecting that attributes object, including destruction, shall not
48       affect any trace stream previously created. An  initialized  attributes
49       object  also  serves  to  receive  the  attributes of an existing trace
50       stream or trace log when calling the posix_trace_get_attr() function.
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RETURN VALUE

53       Upon successful completion, these functions shall  return  a  value  of
54       zero. Otherwise, they shall return the corresponding error number.
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ERRORS

57       The posix_trace_attr_destroy() function may fail if:
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59       EINVAL The value of attr is invalid.
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61       The posix_trace_attr_init() function shall fail if:
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63       ENOMEM Insufficient  memory  exists  to initialize the trace attributes
64              object.
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66       The following sections are informative.
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EXAMPLES

69       None.
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APPLICATION USAGE

72       None.
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RATIONALE

75       None.
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FUTURE DIRECTIONS

78       The posix_trace_attr_destroy()  and  posix_trace_attr_init()  functions
79       may be removed in a future version.
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SEE ALSO

82       posix_trace_create(), posix_trace_get_attr(), uname()
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84       The Base Definitions volume of POSIX.1‐2008, <trace.h>
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87       Portions  of  this text are reprinted and reproduced in electronic form
88       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
89       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
90       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
91       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
92       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
93       event of any discrepancy between this version and the original IEEE and
94       The Open Group Standard, the original IEEE and The Open Group  Standard
95       is  the  referee document. The original Standard can be obtained online
96       at http://www.unix.org/online.html .
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98       Any typographical or formatting errors that appear  in  this  page  are
99       most likely to have been introduced during the conversion of the source
100       files to man page format. To report such errors,  see  https://www.ker
101       nel.org/doc/man-pages/reporting_bugs.html .
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105IEEE/The Open Group                  2013         POSIX_TRACE_ATTR_DESTROY(3P)
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