| libtraceevent(3) |
| ================ |
| |
| NAME |
| ---- |
| tep_is_bigendian, tep_is_local_bigendian, tep_set_local_bigendian - Get / set |
| the endianness of the local machine. |
| |
| SYNOPSIS |
| -------- |
| [verse] |
| -- |
| *#include <event-parse.h>* |
| |
| enum *tep_endian* { |
| TEP_LITTLE_ENDIAN = 0, |
| TEP_BIG_ENDIAN |
| }; |
| |
| int *tep_is_bigendian*(void); |
| bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_); |
| void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); |
| -- |
| |
| DESCRIPTION |
| ----------- |
| |
| The _tep_is_bigendian()_ gets the endianness of the machine, executing |
| the function. |
| |
| The _tep_is_local_bigendian()_ function gets the endianness of the local |
| machine, saved in the _tep_ handler. The _tep_ argument is the trace event |
| parser context. This API is a bit faster than _tep_is_bigendian()_, as it |
| returns cached endianness of the local machine instead of checking it each time. |
| |
| The _tep_set_local_bigendian()_ function sets the endianness of the local |
| machine in the _tep_ handler. The _tep_ argument is trace event parser context. |
| The _endian_ argument is the endianness: |
| [verse] |
| -- |
| _TEP_LITTLE_ENDIAN_ - the machine is little endian, |
| _TEP_BIG_ENDIAN_ - the machine is big endian. |
| -- |
| |
| RETURN VALUE |
| ------------ |
| The _tep_is_bigendian()_ function returns non zero if the endianness of the |
| machine, executing the code, is big endian and zero otherwise. |
| |
| The _tep_is_local_bigendian()_ function returns true, if the endianness of the |
| local machine, saved in the _tep_ handler, is big endian, or false otherwise. |
| |
| EXAMPLE |
| ------- |
| [source,c] |
| -- |
| #include <event-parse.h> |
| ... |
| struct tep_handle *tep = tep_alloc(); |
| ... |
| if (tep_is_bigendian()) |
| tep_set_local_bigendian(tep, TEP_BIG_ENDIAN); |
| else |
| tep_set_local_bigendian(tep, TEP_LITTLE_ENDIAN); |
| ... |
| if (tep_is_local_bigendian(tep)) |
| printf("This machine you are running on is bigendian\n"); |
| else |
| printf("This machine you are running on is little endian\n"); |
| |
| -- |
| |
| FILES |
| ----- |
| [verse] |
| -- |
| *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 |
| ------ |
| [verse] |
| -- |
| *Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*. |
| *Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page. |
| -- |
| REPORTING BUGS |
| -------------- |
| Report bugs to <linux-trace-devel@vger.kernel.org> |
| |
| LICENSE |
| ------- |
| libtraceevent is Free Software licensed under the GNU LGPL 2.1 |
| |
| RESOURCES |
| --------- |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git |
