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POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

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 identified 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 successful.  

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_eventtypelist_rewind() functions may be removed in a future version.  

SEE ALSO

posix_trace_event(), posix_trace_eventid_equal(), posix_trace_getnext_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 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 .


 

Index

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


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