PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)er'sAManualNTTYPELIST_GETNEXT_ID(3P)

PROLOG         top

       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         top

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

SYNOPSIS         top

       #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         top

       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
       identified by trid.

RETURN VALUE         top

       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
       successful.

ERRORS         top

       These functions shall fail if:

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

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       The posix_trace_eventtypelist_getnext_id() and
       posix_trace_eventtypelist_rewind() functions may be removed in a
       future version.

SEE ALSO         top

       posix_trace_event(3p), posix_trace_eventid_equal(3p),
       posix_trace_getnext_event(3p)

       The Base Definitions volume of POSIX.1‐2008, trace.h(0p)

COPYRIGHT         top

       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 Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2P0O1S3IX_TRACE_EVENTTYPELIST_GETNEXT_ID(3P)

Pages that refer to this page: trace.h(0p)posix_trace_create(3p)