tep_find_event - Man Page
Find events by given key.
Synopsis
#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);
Description
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.
Return Value
All these functions return a pointer to the found event, or NULL if there is no such event.
Example
#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 */ } } ...
Files
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.
See Also
Author
Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent. Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.
Reporting Bugs
Report bugs to <linux-trace-devel@vger.kernel.org[3]>
License
libtraceevent is Free Software licensed under the GNU LGPL 2.1
Resources
https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/
Notes
- rostedt@goodmis.org
mailto:rostedt@goodmis.org - tz.stoyanov@gmail.com
mailto:tz.stoyanov@gmail.com - linux-trace-devel@vger.kernel.org
mailto:linux-trace-devel@vger.kernel.org
Referenced By
The man pages tep_find_event_by_name(3) and tep_find_event_by_record(3) are aliases of tep_find_event(3).