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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | FILES | SEE ALSO | AUTHOR | REPORTING BUGS | LICENSE | RESOURCES | NOTES | COLOPHON |
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LIBTRACEEVENT(3) libtraceevent Manual LIBTRACEEVENT(3)
tep_find_event, tep_find_event_by_name, tep_find_event_by_record
- Find events by given key.
#include <event-parse.h>
struct tep_event *tep_find_event(struct tep_handle *tep, int id);
struct tep_event *tep_find_event_by_name(struct tep_handle *tep, const char *sys, const char *name);
struct tep_event *tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record);
This set of functions can be used to search for an event, based
on a given criteria. All functions require a pointer to a tep,
trace event parser context.
The tep_find_event() function searches for an event by given
event id. The event ID is assigned dynamically and can be viewed
in event’s format file, "ID" field.
The tep_find_event_by_name() function searches for an event by
given event name, under the system sys. If the sys is NULL (not
specified), the first event with name is returned.
The tep_find_event_by_record()* function searches for an event
from a given record.
All these functions return a pointer to the found event, or NULL
if there is no such event.
#include <event-parse.h>
...
struct tep_handle *tep = tep_alloc();
...
struct tep_event *event;
event = tep_find_event(tep, 1857);
if (event == NULL) {
/* There is no event with ID 1857 */
}
event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
if (event == NULL) {
/* There is no kvm_exit event, from kvm system */
}
void event_from_record(struct tep_record *record)
{
struct tep_event *event = tep_find_event_by_record(tep, record);
if (event == NULL) {
/* There is no event from given record */
}
}
...
event-parse.h
Header file to include in order to have access to the library APIs.
-ltraceevent
Linker switch to add when building a program that uses the library.
libtraceevent(3), trace-cmd(1)
Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.
Report bugs to <linux-trace-devel@vger.kernel.org[3]>
libtraceevent is Free Software licensed under the GNU LGPL 2.1
https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
2. tz.stoyanov@gmail.com
mailto:tz.stoyanov@gmail.com
3. linux-trace-devel@vger.kernel.org
mailto:linux-trace-devel@vger.kernel.org
This page is part of the libtraceevent (Linux kernel trace event
library) project. Information about the project can be found at
⟨https://www.trace-cmd.org/⟩. If you have a bug report for this
manual page, see ⟨https://www.trace-cmd.org/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git⟩
on 2023-12-22. (At that time, the date of the most recent commit
that was found in the repository was 2023-06-07.) If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
libtraceevent 1.7.3 09/24/2023 LIBTRACEEVENT(3)
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HTML rendering created 2023-12-22 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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