38f76c3136
The tep_ref_get() was renamed to tep_get_ref(), to be more consistent with the other tep_ref_* APIs. However, in the man pages the API is still with the old name. The documentation is fixed to reflect the actual name of the API. Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/linux-trace-devel/20190808113636.13299-2-tz.stoyanov@gmail.com Link: http://lore.kernel.org/lkml/20190919212541.697034573@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
102 lines
2.5 KiB
Plaintext
102 lines
2.5 KiB
Plaintext
libtraceevent(3)
|
|
================
|
|
|
|
NAME
|
|
----
|
|
tep_alloc, tep_free,tep_ref, tep_unref,tep_get_ref - Create, destroy, manage
|
|
references of trace event parser context.
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
--
|
|
*#include <event-parse.h>*
|
|
|
|
struct tep_handle pass:[*]*tep_alloc*(void);
|
|
void *tep_free*(struct tep_handle pass:[*]_tep_);
|
|
void *tep_ref*(struct tep_handle pass:[*]_tep_);
|
|
void *tep_unref*(struct tep_handle pass:[*]_tep_);
|
|
int *tep_get_ref*(struct tep_handle pass:[*]_tep_);
|
|
--
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
These are the main functions to create and destroy tep_handle - the main
|
|
structure, representing the trace event parser context. This context is used as
|
|
the input parameter of most library APIs.
|
|
|
|
The _tep_alloc()_ function allocates and initializes the tep context.
|
|
|
|
The _tep_free()_ function will decrement the reference of the _tep_ handler.
|
|
When there is no more references, then it will free the handler, as well
|
|
as clean up all its resources that it had used. The argument _tep_ is
|
|
the pointer to the trace event parser context.
|
|
|
|
The _tep_ref()_ function adds a reference to the _tep_ handler.
|
|
|
|
The _tep_unref()_ function removes a reference from the _tep_ handler. When
|
|
the last reference is removed, the _tep_ is destroyed, and all resources that
|
|
it had used are cleaned up.
|
|
|
|
The _tep_ref_get()_ functions gets the current references of the _tep_ handler.
|
|
|
|
RETURN VALUE
|
|
------------
|
|
_tep_alloc()_ returns a pointer to a newly created tep_handle structure.
|
|
NULL is returned in case there is not enough free memory to allocate it.
|
|
|
|
_tep_ref_get()_ returns the current references of _tep_.
|
|
If _tep_ is NULL, 0 is returned.
|
|
|
|
EXAMPLE
|
|
-------
|
|
[source,c]
|
|
--
|
|
#include <event-parse.h>
|
|
|
|
...
|
|
struct tep_handle *tep = tep_alloc();
|
|
...
|
|
int ref = tep_get_ref(tep);
|
|
tep_ref(tep);
|
|
if ( (ref+1) != tep_get_ref(tep)) {
|
|
/* Something wrong happened, the counter is not incremented by 1 */
|
|
}
|
|
tep_unref(tep);
|
|
...
|
|
tep_free(tep);
|
|
...
|
|
--
|
|
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
|