POSIX_TRACE_ATTR_DESTROY(P) POSIX Programmer's Manual POSIX_TRACE_ATTR_DESTROY(P)
posix_trace_attr_destroy, posix_trace_attr_init - destroy and initialize the trace stream
attributes object (TRACING)
int posix_trace_attr_destroy(trace_attr_t *attr);
int posix_trace_attr_init(trace_attr_t *attr);
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
Results are undefined if posix_trace_attr_init() is called specifying an already initial-
ized 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 val-
ues), when used by posix_trace_create(), defines the attributes of the trace stream cre-
ated. 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.
Upon successful completion, these functions shall return a value of zero. Otherwise, they
shall return the corresponding error number.
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.
posix_trace_create() , posix_trace_get_attr() , uname() , the Base Definitions volume of
IEEE Std 1003.1-2001, <trace.h>
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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 POSIX_TRACE_ATTR_DESTROY(P)