logo
Free, unlimited AI code reviews that run on commit
git-lrc git-lrc GitHub Install Now We'd appreciate a star git-lrc - Free, unlimited AI code reviews that run on commit | Product Hunt git-lrc - Free, unlimited AI code reviews that run on commit | Product Hunt

tep_get_event, tep_get_first_event, tep_get_events_count - Access events.

Author

StevenRostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
           TzvetomirStoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.

Description

       The tep_get_event() function returns a pointer to event at the given index. The tep argument is trace
       event parser context, the index is the index of the requested event.

       The tep_get_first_event() function returns a pointer to the first event. As events are stored in an
       array, this function returns the pointer to the beginning of the array. The tep argument is trace event
       parser context.

       The tep_get_events_count() function returns the number of the events in the array. The tep argument is
       trace event parser context.

Example

           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
           int i,count = tep_get_events_count(tep);
           struct tep_event *event, *events = tep_get_first_event(tep);

           if (events == NULL) {
                   /* There are no events */
           } else {
                   for (i = 0; i < count; i++) {
                           event = (events+i);
                           /* process events[i] */
                   }

                   /* Get the last event */
                   event = tep_get_event(tep, count-1);
           }

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.

License

       libtraceevent is Free Software licensed under the GNU LGPL 2.1

Name

       tep_get_event, tep_get_first_event, tep_get_events_count - Access events.

Notes

Reporting Bugs

       Report bugs to <linux-trace-devel@vger.kernel.org[3]>

Resources

https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/

Return Value

       The tep_get_event() returns a pointer to the event located at index. NULL is returned in case of error,
       in case there are no events or index is out of range.

       The tep_get_first_event() returns a pointer to the first event. NULL is returned in case of error, or in
       case there are no events.

       The tep_get_events_count() returns the number of the events. 0 is returned in case of error, or in case
       there are no events.

See Also

libtraceevent(3), trace-cmd(1)

Synopsis

#include<event-parse.h>

       struct tep_event *tep_get_event(struct tep_handle *tep, int index);
       struct tep_event *tep_get_first_event(struct tep_handle *tep);
       int tep_get_events_count(struct tep_handle *tep);

See Also