1LIBTRACEEVENT(3)             libtraceevent Manual             LIBTRACEEVENT(3)
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NAME

6       tep_read_number - Reads a number from raw data.
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SYNOPSIS

9       #include <event-parse.h>
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11       unsigned long long tep_read_number(struct tep_handle *tep, const void *ptr, int size);
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DESCRIPTION

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

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

25           #include <event-parse.h>
26           ...
27           struct tep_handle *tep = tep_alloc();
28           ...
29           void process_record(struct tep_record *record)
30           {
31                   int offset = 24;
32                   int data = tep_read_number(tep, record->data + offset, 4);
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34                   /* Read the 4 bytes at the offset 24 of data as an integer */
35           }
36           ...
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FILES

39           event-parse.h
40                   Header file to include in order to have access to the library APIs.
41           -ltraceevent
42                   Linker switch to add when building a program that uses the library.
43

SEE ALSO

45       libtraceevent(3), trace-cmd(1)
46

AUTHOR

48           Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
49           Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.
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REPORTING BUGS

52       Report bugs to <linux-trace-devel@vger.kernel.org[3]>
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LICENSE

55       libtraceevent is Free Software licensed under the GNU LGPL 2.1
56

RESOURCES

58       https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/
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NOTES

61        1. rostedt@goodmis.org
62           mailto:rostedt@goodmis.org
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64        2. tz.stoyanov@gmail.com
65           mailto:tz.stoyanov@gmail.com
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67        3. linux-trace-devel@vger.kernel.org
68           mailto:linux-trace-devel@vger.kernel.org
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72libtraceevent 1.2.1               07/22/2021                  LIBTRACEEVENT(3)
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