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POSIX_TRACE_ATTR_DESTROY
Section: POSIX Programmer's Manual (3P)
Updated: 2003
Index
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PROLOG
This manual page is part of the POSIX Programmer's Manual.
The Linux implementation of this interface may differ (consult
the corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
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 .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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