From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Mon, 16 Mar 2015 23:05:28 +0000 (-0400)
Subject: ir: add bt_ctf_stream_class_get_event_class_by_id()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0863f950997dfe2342c2f7f78c5fafbf255b90ac;p=deliverable%2Fbabeltrace.git

ir: add bt_ctf_stream_class_get_event_class_by_id()

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/formats/ctf/ir/stream-class.c b/formats/ctf/ir/stream-class.c
index 6ad2cfa15..409c5ab0f 100644
--- a/formats/ctf/ir/stream-class.c
+++ b/formats/ctf/ir/stream-class.c
@@ -335,6 +335,30 @@ end:
 	return event_class;
 }
 
+struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class_by_id(
+		struct bt_ctf_stream_class *stream_class, uint32_t id)
+{
+	size_t i;
+	struct bt_ctf_event_class *event_class = NULL;
+
+	if (!stream_class) {
+		goto end;
+	}
+
+	for (i = 0; i < stream_class->event_classes->len; i++) {
+		struct bt_ctf_event_class *current_event_class =
+			g_ptr_array_index(stream_class->event_classes, i);
+
+		if (bt_ctf_event_class_get_id(current_event_class) == id) {
+			event_class = current_event_class;
+			bt_ctf_event_class_get(event_class);
+			goto end;
+		}
+	}
+end:
+	return event_class;
+}
+
 struct bt_ctf_field_type *bt_ctf_stream_class_get_packet_context_type(
 		struct bt_ctf_stream_class *stream_class)
 {
diff --git a/include/babeltrace/ctf-ir/stream-class.h b/include/babeltrace/ctf-ir/stream-class.h
index bf5f577c3..a78437b2d 100644
--- a/include/babeltrace/ctf-ir/stream-class.h
+++ b/include/babeltrace/ctf-ir/stream-class.h
@@ -190,6 +190,18 @@ extern struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class(
 extern struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class_by_name(
 		struct bt_ctf_stream_class *stream_class, const char *name);
 
+/*
+ * bt_ctf_stream_class_get_event_class_by_name: Get stream class event class by
+ * ID.
+ *
+ * @param stream_class Stream class.
+ * @param id Event class ID.
+ *
+ * Returns event class, NULL on error.
+ */
+extern struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class_by_id(
+		struct bt_ctf_stream_class *stream_class, uint32_t id);
+
 /*
  * bt_ctf_stream_class_get_packet_context_type: get the stream class' packet
  * context type.