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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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POSIX_TR...TNEXT_ID(3P) POSIX Programmer's Manual POSIX_TR...TNEXT_ID(3P)
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.
posix_trace_eventtypelist_getnext_id,
posix_trace_eventtypelist_rewind — iterate over a mapping of trace
event types (TRACING)
#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);
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.
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.
These functions shall fail if:
EINVAL The trid argument was not a valid trace stream identifier.
The following sections are informative.
None.
None.
None.
The posix_trace_eventtypelist_getnext_id() and
posix_trace_eventtypelist_rewind() functions may be removed in a
future version.
posix_trace_event(3p), posix_trace_eventid_equal(3p),
posix_trace_getnext_event(3p)
The Base Definitions volume of POSIX.1‐2017, trace.h(0p)
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 .
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 2017 POSIX_TR...TNEXT_ID(3P)
Pages that refer to this page: trace.h(0p), posix_trace_create(3p)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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