posix_trace_eventtypelist_rewind man page on Archlinux

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POSIX_TRACE_EVENTTYPELIST_GPOSIXTProgrPOSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)

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.

NAME
       posix_trace_eventtypelist_getnext_id,  posix_trace_eventtypelist_rewind
       — iterate over a mapping of trace event types (TRACING)

SYNOPSIS
       #include <trace.h>

       int posix_trace_eventtypelist_getnext_id(trace_id_t trid,
	   trace_event_id_t *restrict event, int *restrict unavailable);
       int posix_trace_eventtypelist_rewind(trace_id_t trid);

DESCRIPTION
       The  first  time	 posix_trace_eventtypelist_getnext_id() is called, the
       function shall return in the variable pointed to	 by  event  the	 first
       trace  event  type  identifier of the list of trace events of the trace
       stream  identified  by  the  trid   argument.   Successive   calls   to
       posix_trace_eventtypelist_getnext_id()  return  in the variable pointed
       to by 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 event argument, the variable pointed  to
       by  the	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 unavailable argument shall be set to a value
       different from zero.

       The posix_trace_eventtypelist_rewind() 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 iden‐
       tified by trid.

RETURN VALUE
       Upon  successful	 completion,  these  functions shall return a value of
       zero. Otherwise, they shall return the corresponding error number.

       The posix_trace_eventtypelist_getnext_id() function  stores  the	 trace
       event  type identifier value in the object pointed to by event, if suc‐
       cessful.

ERRORS
       These functions shall fail if:

       EINVAL The trid argument was not a valid trace stream identifier.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       The posix_trace_eventtypelist_getnext_id()  and	posix_trace_eventtype‐
       list_rewind() functions may be removed in a future version.

SEE ALSO
       posix_trace_event(), posix_trace_eventid_equal(), posix_trace_get‐
       next_event()

       The Base Definitions volume of POSIX.1‐2008, <trace.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),	The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
       cal and Electronics Engineers,  Inc  and	 The  Open  Group.   (This  is
       POSIX.1-2008  with  the	2013  Technical Corrigendum 1 applied.) 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.unix.org/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.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)
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