SYNOPSIS
#include <event-parse.h> enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf, unsigned long size, const char *sys); enum tep_errno tep_parse_format(struct tep_handle *tep, struct tep_event **eventp, const char *buf, unsigned long size, const char *sys);
DESCRIPTION
The tep_parse_event() function parses the event format and creates an event structure to quickly parse raw data for a given event. The tep argument is the trace event parser context. The created event structure is stored in the tep context. The buf argument is a buffer with size, where the event format data is. The event format data can be taken from tracefs/events/…/…/format files. The sys argument is the system of the event.
The tep_parse_format() function does the same as tep_parse_event(). The only difference is in the extra eventp argument, where the newly created event structure is returned.
RETURN VALUE
Both tep_parse_event() and tep_parse_format() functions return 0 on success, or TEP_ERRNO__… in case of an error.
EXAMPLE
#include <event-parse.h> ... struct tep_handle *tep = tep_alloc(); ... char *buf; int size; struct tep_event *event = NULL; buf = read_file("/sys/kernel/tracing/events/ftrace/print/format", &size); if (tep_parse_event(tep, buf, size, "ftrace") != 0) { /* Failed to parse the ftrace print format */ } if (tep_parse_format(tep, &event, buf, size, "ftrace") != 0) { /* Failed to parse the ftrace print format */ } ...
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>, 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