LIBTRACEEVENT(3)             libtraceevent Manual             LIBTRACEEVENT(3)

NAME
       tep_read_number - Reads a number from raw data.

SYNOPSIS
       #include <event-parse.h>

       unsigned long long tep_read_number(struct tep_handle *tep, const void *ptr, int size);

DESCRIPTION
       The tep_read_number() function reads an integer from raw data, taking
       into account the endianness of the raw data and the current host. The
       tep argument is the trace event parser context. The ptr is a pointer to
       the raw data, where the integer is, and the size is the size of the
       integer.

RETURN VALUE
       The tep_read_number() function returns the integer in the byte order of
       the current host. In case of an error, 0 is returned.

EXAMPLE
           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
           void process_record(struct tep_record *record)
           {
                   int offset = 24;
                   int data = tep_read_number(tep, record->data + offset, 4);

                   /* Read the 4 bytes at the offset 24 of data as an integer */
           }
           ...

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

libtraceevent                     01/13/2024                  LIBTRACEEVENT(3)