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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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POSIX_TR...TSET_ADD(3P) POSIX Programmer's Manual POSIX_TR...TSET_ADD(3P)
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.
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)
#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 POSIX.1‐2008.
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.
The posix_trace_eventset_add(), posix_trace_eventset_del(),
posix_trace_eventset_empty(), posix_trace_eventset_fill(), and
posix_trace_eventset_ismember() functions may be removed in a
future version.
posix_trace_eventid_equal(3p), posix_trace_get_filter(3p)
The Base Definitions volume of POSIX.1‐2017, trace.h(0p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 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 .
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 .
IEEE/The Open Group 2017 POSIX_TR...TSET_ADD(3P)
Pages that refer to this page: trace.h(0p), posix_trace_get_filter(3p)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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