tep_list_events(3) — Справочная страница Linux

LIBTRACEEVENT(3)          libtraceevent Manual          LIBTRACEEVENT(3)

ИМЯ

       tep_list_events, tep_list_events_copy - Get list of events,
       sorted by given criteria.

СИНТАКСИС

       #include <event-parse.h>

       enum tep_event_sort_type {
               TEP_EVENT_SORT_ID,
               TEP_EVENT_SORT_NAME,
               TEP_EVENT_SORT_SYSTEM,
       };

       struct tep_event **tep_list_events(struct tep_handle *tep, enum tep_event_sort_type sort_type);
       struct tep_event **tep_list_events_copy(struct tep_handle *tep, enum tep_event_sort_type sort_type);

ОПИСАНИЕ

       The tep_list_events() function returns an array of pointers to
       the events, sorted by the sort_type criteria. The last element of
       the array is NULL. The returned memory must not be freed, it is
       managed by the library. The function is not thread safe. The tep
       argument is trace event parser context. The sort_type argument is
       the required sort criteria:

                   TEP_EVENT_SORT_ID     - sort by the event ID.
                   TEP_EVENT_SORT_NAME   - sort by the event (name, system, id) triplet.
                   TEP_EVENT_SORT_SYSTEM - sort by the event (system, name, id) triplet.

       The tep_list_events_copy() is a thread safe version of
       tep_list_events(). It has the same behavior, but the returned
       array is allocated internally and must be freed by the caller.
       Note that the content of the array must not be freed (see the
       EXAMPLE below).

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       The tep_list_events() function returns an array of pointers to
       events. In case of an error, NULL is returned. The returned array
       must not be freed, it is managed by the library.

       The tep_list_events_copy() function returns an array of pointers
       to events. In case of an error, NULL is returned. The returned
       array must be freed by the caller.

ПРИМЕР

           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
           int i;
           struct tep_event_format **events;

           i=0;
           events = tep_list_events(tep, TEP_EVENT_SORT_ID);
           if (events == NULL) {
                   /* Failed to get the events, sorted by ID */
           } else {
                   while(events[i]) {
                           /* walk through the list of the events, sorted by ID */
                           i++;
                   }
           }

           i=0;
           events = tep_list_events_copy(tep, TEP_EVENT_SORT_NAME);
           if (events == NULL) {
                   /* Failed to get the events, sorted by name */
           } else {
                   while(events[i]) {
                           /* walk through the list of the events, sorted by name */
                           i++;
                   }
                   free(events);
           }

           ...

ФАЙЛЫ

           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.

СМОТРИТЕ ТАКЖЕ

       libtraceevent(3), trace-cmd(1)

АВТОР

           Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
           Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.

СООБЩЕНИЕ ОБ ОШИБКАХ

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

ЛИЦЕНЗИЯ

       libtraceevent is Free Software licensed under the GNU LGPL 2.1

РЕСУРСЫ

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

ПРИМЕЧАНИЯ

        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

КОЛОФОН

       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 2024-06-14.  (At that time, the date of the most recent commit
       that was found in the repository was 2024-05-17.)  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)