posix_trace_attr_destroy

       ize 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 individ-
       ual 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 func-
       tion 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.

FUTURE DIRECTIONS
       None.

SEE ALSO
       posix_trace_create() , posix_trace_get_attr() , uname() , the Base Def-
       initions 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)