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Linux 2.6 - man page for posix_trace_eventtypelist_rewind (linux section 3)

POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(P) 		     POSIX Programmer's Manual			   POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(P)

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 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
None.
SEE ALSO
posix_trace_event() , posix_trace_getnext_event() , posix_trace_trid_eventid_open() , the Base Definitions volume of IEEE Std 1003.1-2001, <trace.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .
IEEE
/The Open Group 2003 POSIX_TRACE_EVENTTYPELIST_GETNEXT_ID(P)

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