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POSIX_TRACE_ATTR_DESTROY

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

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 Section 2.11.1.2, posix_trace_status_info Structure). 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 POSIX.1-2008, 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

The posix_trace_attr_destroy() and posix_trace_attr_init() functions may be removed in a future version.  

SEE ALSO

posix_trace_create(), posix_trace_get_attr(), uname() The Base Definitions volume of POSIX.1-2008, <trace.h>  

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .


 

Index

PROLOG
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
EXAMPLES
APPLICATION USAGE
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT





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