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POSIX_TRACE_EVENTSET_ADD
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_eventset_add, posix_trace_eventset_del, posix_trace_eventset_empty,
posix_trace_eventset_fill,
posix_trace_eventset_ismember - manipulate trace event type sets (TRACING)
SYNOPSIS
#include <trace.h>
int posix_trace_eventset_add(trace_event_id_t event_id,
trace_event_set_t *set);
int posix_trace_eventset_del(trace_event_id_t event_id,
trace_event_set_t *set);
int posix_trace_eventset_empty(trace_event_set_t *set);
int posix_trace_eventset_fill(trace_event_set_t *set,
int what);
int posix_trace_eventset_ismember(trace_event_id_t event_id,
const trace_event_set_t *restrict set, int
*restrict
ismember);
DESCRIPTION
These primitives manipulate sets of trace event types. They operate
on data objects addressable by the application, not on the
current trace event filter of any trace stream.
The posix_trace_eventset_add() and posix_trace_eventset_del()
functions, respectively, shall add or delete the
individual trace event type specified by the value of the argument
event_id to or from the trace event type set pointed to
by the argument set. Adding a trace event type already in the
set or deleting a trace event type not in the set shall not be
considered an error.
The posix_trace_eventset_empty() function shall initialize the
trace event type set pointed to by the set argument
such that all trace event types defined, both system and user, shall
be excluded from the set.
The posix_trace_eventset_fill() function shall initialize the
trace event type set pointed to by the argument set,
such that the set of trace event types defined by the argument what
shall be included in the set. The value of the argument
what shall consist of one of the following values, as defined
in the <trace.h> header:
- POSIX_TRACE_WOPID_EVENTS
-
All the process-independent implementation-defined system trace event
types are included in the set.
- POSIX_TRACE_SYSTEM_EVENTS
-
All the implementation-defined system trace event types are included
in the set, as are those defined in
IEEE Std 1003.1-2001.
- POSIX_TRACE_ALL_EVENTS
-
All trace event types defined, both system and user, are included
in the set.
Applications shall call either posix_trace_eventset_empty()
or posix_trace_eventset_fill() at least once for each
object of type trace_event_set_t prior to any other use of that
object. If such an object is not initialized in this way,
but is nonetheless supplied as an argument to any of the posix_trace_eventset_add(),
posix_trace_eventset_del(), or
posix_trace_eventset_ismember() functions, the results are undefined.
The posix_trace_eventset_ismember() function shall test whether
the trace event type specified by the value of the
argument event_id is a member of the set pointed to by the argument
set. The value returned in the object pointed to
by ismember argument is zero if the trace event type identifier
is not a member of the set and a value different from zero
if it is a member of the set.
RETURN VALUE
Upon successful completion, these functions shall return a value of
zero. Otherwise, they shall return the corresponding error
number.
ERRORS
These functions may fail if:
- EINVAL
-
The value of one of the arguments is invalid.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
posix_trace_set_filter(), posix_trace_trid_eventid_open(),
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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