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+'\" et
+.TH POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\"
+.SH PROLOG
+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.
+.\"
+.SH NAME
+posix_trace_eventtypelist_getnext_id,
+posix_trace_eventtypelist_rewind
+\(em iterate over a mapping of trace event types
+(\fBTRACING\fP)
+.SH SYNOPSIS
+.LP
+.nf
+#include <trace.h>
+.P
+int posix_trace_eventtypelist_getnext_id(trace_id_t \fItrid\fP,
+    trace_event_id_t *restrict \fIevent\fP, int *restrict \fIunavailable\fP);
+int posix_trace_eventtypelist_rewind(trace_id_t \fItrid\fP);
+.fi
+.SH DESCRIPTION
+The first time
+\fIposix_trace_eventtypelist_getnext_id\fR()
+is called, the function shall return in the variable pointed to by
+.IR event
+the first trace event type identifier of the list of trace events of
+the trace stream identified by the
+.IR trid
+argument. Successive calls to
+\fIposix_trace_eventtypelist_getnext_id\fR()
+return in the variable pointed to by
+.IR event
+the next trace event type identifier in that same list. Each time a
+trace event type identifier is successfully written into the variable
+pointed to by the
+.IR event
+argument, the variable pointed to by the
+.IR unavailable
+argument shall be set to zero. When no more trace event type
+identifiers are available, and so none is returned, the variable
+pointed to by the
+.IR unavailable
+argument shall be set to a value different from zero.
+.P
+The
+\fIposix_trace_eventtypelist_rewind\fR()
+function shall reset the next trace event type identifier to be read to
+the first trace event type identifier from the list of trace events
+used in the trace stream identified by
+.IR trid .
+.SH "RETURN VALUE"
+Upon successful completion, these functions shall return a value of
+zero. Otherwise, they shall return the corresponding error number.
+.P
+The
+\fIposix_trace_eventtypelist_getnext_id\fR()
+function stores the trace event type identifier value in the object
+pointed to by
+.IR event ,
+if successful.
+.SH ERRORS
+These functions shall fail if:
+.TP
+.BR EINVAL
+The
+.IR trid
+argument was not a valid trace stream identifier.
+.LP
+.IR "The following sections are informative."
+.SH EXAMPLES
+None.
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+The
+\fIposix_trace_eventtypelist_getnext_id\fR()
+and
+\fIposix_trace_eventtypelist_rewind\fR()
+functions may be removed in a future version.
+.SH "SEE ALSO"
+.ad l
+.IR "\fIposix_trace_event\fR\^(\|)",
+.IR "\fIposix_trace_eventid_equal\fR\^(\|)",
+.IR "\fIposix_trace_getnext_event\fR\^(\|)"
+.ad b
+.P
+The Base Definitions volume of POSIX.1\(hy2017,
+.IR "\fB<trace.h>\fP"
+.\"
+.SH COPYRIGHT
+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 .
+.PP
+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 .