1POSIX_TRACE_EVENTSET_ADD(3P)POSIX Programmer's ManuaPlOSIX_TRACE_EVENTSET_ADD(3P)
2
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
12 posix_trace_eventset_add, posix_trace_eventset_del,
13 posix_trace_eventset_empty, posix_trace_eventset_fill,
14 posix_trace_eventset_ismember — manipulate trace event type sets (TRAC‐
15 ING)
16
18 #include <trace.h>
19 int posix_trace_eventset_add(trace_event_id_t event_id,
21 trace_event_set_t *set);
22 int posix_trace_eventset_del(trace_event_id_t event_id,
23 trace_event_set_t *set);
24 int posix_trace_eventset_empty(trace_event_set_t *set);
25 int posix_trace_eventset_fill(trace_event_set_t *set, int what);
26 int posix_trace_eventset_ismember(trace_event_id_t event_id,
27 const trace_event_set_t *restrict set, int *restrict ismember);
28
30 These primitives manipulate sets of trace event types. They operate on
31 data objects addressable by the application, not on the current trace
32 event filter of any trace stream.
33 The posix_trace_eventset_add() and posix_trace_eventset_del() func‐
35 tions, respectively, shall add or delete the individual trace event
36 type specified by the value of the argument event_id to or from the
37 trace event type set pointed to by the argument set. Adding a trace
38 event type already in the set or deleting a trace event type not in the
39 set shall not be considered an error.
40 The posix_trace_eventset_empty() function shall initialize the trace
42 event type set pointed to by the set argument such that all trace event
43 types defined, both system and user, shall be excluded from the set.
44 The posix_trace_eventset_fill() function shall initialize the trace
46 event type set pointed to by the argument set, such that the set of
47 trace event types defined by the argument what shall be included in the
48 set. The value of the argument what shall consist of one of the follow‐
49 ing values, as defined in the <trace.h> header:
50 POSIX_TRACE_WOPID_EVENTS
52 All the process-independent implementation-defined system trace
53 event types are included in the set.
54 POSIX_TRACE_SYSTEM_EVENTS
56 All the implementation-defined system trace event types are
57 included in the set, as are those defined in POSIX.1‐2008.
58 POSIX_TRACE_ALL_EVENTS
60 All trace event types defined, both system and user, are included
61 in the set.
62 Applications shall call either posix_trace_eventset_empty() or
64 posix_trace_eventset_fill() at least once for each object of type
65 trace_event_set_t prior to any other use of that object. If such an
66 object is not initialized in this way, but is nonetheless supplied as
67 an argument to any of the posix_trace_eventset_add(),
68 posix_trace_eventset_del(), or posix_trace_eventset_ismember() func‐
69 tions, the results are undefined.
70 The posix_trace_eventset_ismember() function shall test whether the
72 trace event type specified by the value of the argument event_id is a
73 member of the set pointed to by the argument set. The value returned
74 in the object pointed to by ismember argument is zero if the trace
75 event type identifier is not a member of the set and a value different
76 from zero if it is a member of the set.
77
79 Upon successful completion, these functions shall return a value of
80 zero. Otherwise, they shall return the corresponding error number.
81
83 These functions may fail if:
84 EINVAL The value of one of the arguments is invalid.
86 The following sections are informative.
88
90 None.
91
93 None.
94
96 None.
97
99 The posix_trace_eventset_add(), posix_trace_eventset_del(),
100 posix_trace_eventset_empty(), posix_trace_eventset_fill(), and
101 posix_trace_eventset_ismember() functions may be removed in a future
102 version.
103
105 posix_trace_eventid_equal(), posix_trace_get_filter()
106 The Base Definitions volume of POSIX.1‐2017, <trace.h>
108
110 Portions of this text are reprinted and reproduced in electronic form
111 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
112 table Operating System Interface (POSIX), The Open Group Base Specifi‐
113 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
114 Electrical and Electronics Engineers, Inc and The Open Group. In the
115 event of any discrepancy between this version and the original IEEE and
116 The Open Group Standard, the original IEEE and The Open Group Standard
117 is the referee document. The original Standard can be obtained online
118 at http://www.opengroup.org/unix/online.html .
119 Any typographical or formatting errors that appear in this page are
121 most likely to have been introduced during the conversion of the source
122 files to man page format. To report such errors, see https://www.ker‐
123 nel.org/doc/man-pages/reporting_bugs.html .
124IEEE/The Open Group 2017 POSIX_TRACE_EVENTSET_ADD(3P)