1POSIX_TRACE_EVENTTYPELIST_GEPTONSEIXXT_PIrDo(g3rPaP)mOmSeIrX'_sTRMAaCnEu_aElVENTTYPELIST_GETNEXT_ID(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_eventtypelist_getnext_id, posix_trace_eventtypelist_rewind
13 — iterate over a mapping of trace event types (TRACING)
14
16 #include <trace.h>
17 int posix_trace_eventtypelist_getnext_id(trace_id_t trid,
19 trace_event_id_t *restrict event, int *restrict unavailable);
20 int posix_trace_eventtypelist_rewind(trace_id_t trid);
21
23 The first time posix_trace_eventtypelist_getnext_id() is called, the
24 function shall return in the variable pointed to by event the first
25 trace event type identifier of the list of trace events of the trace
26 stream identified by the trid argument. Successive calls to
27 posix_trace_eventtypelist_getnext_id() return in the variable pointed
28 to by event the next trace event type identifier in that same list.
29 Each time a trace event type identifier is successfully written into
30 the variable pointed to by the event argument, the variable pointed to
31 by the unavailable argument shall be set to zero. When no more trace
32 event type identifiers are available, and so none is returned, the
33 variable pointed to by the unavailable argument shall be set to a value
34 different from zero.
35 The posix_trace_eventtypelist_rewind() function shall reset the next
37 trace event type identifier to be read to the first trace event type
38 identifier from the list of trace events used in the trace stream iden‐
39 tified by trid.
40
42 Upon successful completion, these functions shall return a value of
43 zero. Otherwise, they shall return the corresponding error number.
44 The posix_trace_eventtypelist_getnext_id() function stores the trace
46 event type identifier value in the object pointed to by event, if suc‐
47 cessful.
48
50 These functions shall fail if:
51 EINVAL The trid argument was not a valid trace stream identifier.
53 The following sections are informative.
55
57 None.
58
60 None.
61
63 None.
64
66 The posix_trace_eventtypelist_getnext_id() and posix_trace_eventtype‐
67 list_rewind() functions may be removed in a future version.
68
70 posix_trace_event(), posix_trace_eventid_equal(), posix_trace_get‐
71 next_event()
72 The Base Definitions volume of POSIX.1‐2017, <trace.h>
74
76 Portions of this text are reprinted and reproduced in electronic form
77 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
78 table Operating System Interface (POSIX), The Open Group Base Specifi‐
79 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
80 Electrical and Electronics Engineers, Inc and The Open Group. In the
81 event of any discrepancy between this version and the original IEEE and
82 The Open Group Standard, the original IEEE and The Open Group Standard
83 is the referee document. The original Standard can be obtained online
84 at http://www.opengroup.org/unix/online.html .
85 Any typographical or formatting errors that appear in this page are
87 most likely to have been introduced during the conversion of the source
88 files to man page format. To report such errors, see https://www.ker‐
89 nel.org/doc/man-pages/reporting_bugs.html .
90IEEE/The Open Group 20P1O7SIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)