forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
1.7 KiB
78 lines
1.7 KiB
libtraceevent(3) |
|
================ |
|
|
|
NAME |
|
---- |
|
tep_read_number - Reads a number from raw data. |
|
|
|
SYNOPSIS |
|
-------- |
|
[verse] |
|
-- |
|
*#include <event-parse.h>* |
|
|
|
unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_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 |
|
------- |
|
[source,c] |
|
-- |
|
#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 |
|
----- |
|
[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* <[email protected]>, author of *libtraceevent*. |
|
*Tzvetomir Stoyanov* <[email protected]>, author of this man page. |
|
-- |
|
REPORTING BUGS |
|
-------------- |
|
Report bugs to <[email protected]> |
|
|
|
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
|
|
|