NAME

       posix_trace_attr_destroy,  posix_trace_attr_init  -  destroy  and  initialize the trace stream attributes
       object (TRACING)

SYNOPSIS

       #include <trace.h>

       int posix_trace_attr_destroy(trace_attr_t *attr);
       int posix_trace_attr_init(trace_attr_t *attr);

DESCRIPTION

       The posix_trace_attr_destroy() function shall destroy an initialized trace attributes object. A destroyed
       attr attributes object can be reinitialized  using  posix_trace_attr_init();  the  results  of  otherwise
       referencing the object after it has been destroyed are undefined.

       The  posix_trace_attr_init()  function  shall  initialize a trace attributes object attr with the default
       value for all of the individual attributes used by a  given  implementation.  The  read-only  generation-
       version  and clock-resolution attributes of the newly initialized trace attributes object shall be set to
       their appropriate values (see Trace Stream Attributes ).

       Results are undefined if  posix_trace_attr_init()  is  called  specifying  an  already  initialized  attr
       attributes object.

       Implementations  may  add  extensions  to  the trace attributes object structure as permitted in the Base
       Definitions volume of IEEE Std 1003.1-2001, Chapter 2, Conformance.

       The resulting attributes object (possibly modified by setting individual attributes values), when used by
       posix_trace_create(), defines the attributes of the trace stream created. A single attributes object  can
       be  used  in  multiple  calls to posix_trace_create().  After one or more trace streams have been created
       using an attributes object, any function affecting that attributes object, including  destruction,  shall
       not  affect  any trace stream previously created. An initialized attributes object also serves to receive
       the attributes of an existing trace stream or trace log when calling the posix_trace_get_attr() function.

RETURN VALUE

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

ERRORS

       The posix_trace_attr_destroy() function may fail if:

       EINVAL The value of attr is invalid.

       The posix_trace_attr_init() function shall fail if:

       ENOMEM Insufficient memory exists to initialize the trace attributes object.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       posix_trace_create()   ,   posix_trace_get_attr()   ,   uname()   ,   the   Base  Definitions  volume  of
       IEEE Std 1003.1-2001, <trace.h>

COPYRIGHT

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

IEEE/The Open Group                                   2003                           POSIX_TRACE_ATTR_DESTROY(P)