From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
Add a way to get the number of registered functions in a tep handler.
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
Documentation/libtraceevent-func_apis.txt | 5 ++++-
include/traceevent/event-parse.h | 2 ++
src/event-parse-api.c | 14 ++++++++++++++
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/Documentation/libtraceevent-func_apis.txt b/Documentation/libtraceevent-func_apis.txt
index 89e307afe63f..1fe450023772 100644
--- a/Documentation/libtraceevent-func_apis.txt
+++ b/Documentation/libtraceevent-func_apis.txt
@@ -4,7 +4,8 @@ libtraceevent(3)
NAME
----
tep_find_function, tep_find_function_address, tep_set_function_resolver,
-tep_reset_function_resolver, tep_register_function, tep_register_print_string -
+tep_reset_function_resolver, tep_register_function, tep_register_print_string,
+tep_get_function_count -
function related tep APIs
SYNOPSIS
@@ -20,6 +21,7 @@ const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned
unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_);
int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_);
int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_);
+int *tep_get_function_count*(struct tep_handle *_tep_)
--
DESCRIPTION
@@ -75,6 +77,7 @@ addresses and those strings. The _tep_ argument is the trace event parser
context. The _fmt_ is the string to register, it is copied internally.
The _addr_ is the address the string was located at.
+*tep_get_function_count*() returns the number of registered functions in a tep handler.
RETURN VALUE
------------
diff --git a/include/traceevent/event-parse.h b/include/traceevent/event-parse.h
index 68b2f4383b42..0b911e1caa7c 100644
--- a/include/traceevent/event-parse.h
+++ b/include/traceevent/event-parse.h
@@ -566,6 +566,8 @@ struct tep_event **tep_list_events_copy(struct tep_handle *tep,
struct tep_format_field **tep_event_common_fields(struct tep_event *event);
struct tep_format_field **tep_event_fields(struct tep_event *event);
+int tep_get_function_count(struct tep_handle *tep);
+
enum tep_endian {
TEP_LITTLE_ENDIAN = 0,
TEP_BIG_ENDIAN
diff --git a/src/event-parse-api.c b/src/event-parse-api.c
index a765a683f05d..268a58609419 100644
--- a/src/event-parse-api.c
+++ b/src/event-parse-api.c
@@ -50,6 +50,20 @@ int tep_get_events_count(struct tep_handle *tep)
return 0;
}
+/**
+ * tep_get_events_count - get the number of defined events
+ * @tep: a handle to the tep_handle
+ *
+ * This returns number of elements in event array
+ * If @tep is NULL, 0 is returned.
+ */
+int tep_get_function_count(struct tep_handle *tep)
+{
+ if (tep)
+ return tep->func_count;
+ return 0;
+}
+
/**
* tep_set_flag - set event parser flag
* @tep: a handle to the tep_handle
--
2.34.1
|