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POSIX_TRACE_EVENTSET_ADD(P) POSIX_TRACE_EVENTSET_ADD(P)
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, respec-
tively, 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. Other-
wise, 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 .
POSIX 2003 POSIX_TRACE_EVENTSET_ADD(P)
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