Originální popis anglicky:
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)
Návod, kniha: POSIX Programmer's Manual
#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);
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.
Upon successful completion, these functions shall return a value of zero.
Otherwise, they shall return the corresponding error number.
These functions may fail if:
- EINVAL
- The value of one of the arguments is invalid.
The following sections are informative.
None.
None.
None.
None.
posix_trace_set_filter() ,
posix_trace_trid_eventid_open() , 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 original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
