NAME

       tep_read_number_field - Reads a number from raw data.

SYNOPSIS

       #include <event-parse.h>

       int tep_read_number_field(struct tep_format_field *field, const void *data, unsigned long long *value);

DESCRIPTION

       The tep_read_number_field() function reads the value of the field from the raw data and
       stores it in the value. The function sets the value according to the endianness of the raw
       data and the current machine and stores it in value.

RETURN VALUE

       The tep_read_number_field() function retunrs 0 in case of success, or -1 in case of an
       error.

EXAMPLE

           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
           struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start");
           ...
           void process_record(struct tep_record *record)
           {
                   unsigned long long pid;
                   struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid");

                   if (tep_read_number_field(field_pid, record->data, &pid) != 0) {
                           /* Failed to get "common_pid" value */
                   }
           }
           ...

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

       libtraceevent(3), trace-cmd(1)

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

        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