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tep_event_common_fields, tep_event_fields - Get a list of fields for an event.

Author

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

Description

       The tep_event_common_fields() function returns an array of pointers to common fields for the event. The
       array is allocated in the function and must be freed by free(). The last element of the array is NULL.

       The tep_event_fields() function returns an array of pointers to event specific fields for the event. The
       array is allocated in the function and must be freed by free(). The last element of the array is NULL.

Example

           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
           int i;
           struct tep_format_field **fields;
           struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit");
           if (event != NULL) {
                   fields = tep_event_common_fields(event);
                   if (fields != NULL) {
                           i = 0;
                           while (fields[i]) {
                                   /*
                                     walk through the list of the common fields
                                     of the kvm_exit event
                                   */
                                   i++;
                           }
                           free(fields);
                   }
                   fields = tep_event_fields(event);
                   if (fields != NULL) {
                           i = 0;
                           while (fields[i]) {
                                   /*
                                     walk through the list of the event specific
                                     fields of the kvm_exit event
                                   */
                                   i++;
                           }
                           free(fields);
                   }
           }
           ...

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_event_common_fields, tep_event_fields - Get a list of fields for an event.

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

       Both tep_event_common_fields() and tep_event_fields() functions return an array of pointers to
       tep_format_field structures in case of success, or NULL in case of an error.

See Also

libtraceevent(3), trace-cmd(1)

Synopsis

#include<event-parse.h>

       struct tep_format_field **tep_event_common_fields(struct tep_event *event);
       struct tep_format_field **tep_event_fields(struct tep_event *event);

See Also