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
13 posix_trace_eventtypelist_getnext_id, posix_trace_eventtypelist_rewind
14 — iterate over a mapping of trace event types (TRACING)
15
17 #include <trace.h>
18 int posix_trace_eventtypelist_getnext_id(trace_id_t trid,
20 trace_event_id_t *restrict event, int *restrict unavailable);
21 int posix_trace_eventtypelist_rewind(trace_id_t trid);
22
24 The first time posix_trace_eventtypelist_getnext_id() is called, the
25 function shall return in the variable pointed to by event the first
26 trace event type identifier of the list of trace events of the trace
27 stream identified by the trid argument. Successive calls to
28 posix_trace_eventtypelist_getnext_id() return in the variable pointed
29 to by event the next trace event type identifier in that same list.
30 Each time a trace event type identifier is successfully written into
31 the variable pointed to by the event argument, the variable pointed to
32 by the unavailable argument shall be set to zero. When no more trace
33 event type identifiers are available, and so none is returned, the
34 variable pointed to by the unavailable argument shall be set to a value
35 different from zero.
36 The posix_trace_eventtypelist_rewind() function shall reset the next
38 trace event type identifier to be read to the first trace event type
39 identifier from the list of trace events used in the trace stream iden‐
40 tified by trid.
41
43 Upon successful completion, these functions shall return a value of
44 zero. Otherwise, they shall return the corresponding error number.
45 The posix_trace_eventtypelist_getnext_id() function stores the trace
47 event type identifier value in the object pointed to by event, if suc‐
48 cessful.
49
51 These functions shall fail if:
52 EINVAL The trid argument was not a valid trace stream identifier.
54 The following sections are informative.
56
58 None.
59
61 None.
62
64 None.
65
67 The posix_trace_eventtypelist_getnext_id() and posix_trace_eventtype‐
68 list_rewind() functions may be removed in a future version.
69
71 posix_trace_event(), posix_trace_eventid_equal(), posix_trace_get‐
72 next_event()
73 The Base Definitions volume of POSIX.1‐2008, <trace.h>
75
77 Portions of this text are reprinted and reproduced in electronic form
78 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
79 -- Portable Operating System Interface (POSIX), The Open Group Base
80 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
81 cal and Electronics Engineers, Inc and The Open Group. (This is
82 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
83 event of any discrepancy between this version and the original IEEE and
84 The Open Group Standard, the original IEEE and The Open Group Standard
85 is the referee document. The original Standard can be obtained online
86 at http://www.unix.org/online.html .
87 Any typographical or formatting errors that appear in this page are
89 most likely to have been introduced during the conversion of the source
90 files to man page format. To report such errors, see https://www.ker‐
91 nel.org/doc/man-pages/reporting_bugs.html .
92IEEE/The Open Group 20P1O3SIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)