From 9c4c8f6e75e53013a3db715f4d7c0058b77fd9cc Mon Sep 17 00:00:00 2001
From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Tue, 7 Apr 2015 19:24:17 -0400
Subject: [PATCH] ir: add bt_ctf_event_copy() (event deep copy)
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Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---
 formats/ctf/ir/event.c            | 68 +++++++++++++++++++++++++++++++
 include/babeltrace/ctf-ir/event.h | 13 ++++++
 2 files changed, 81 insertions(+)

diff --git a/formats/ctf/ir/event.c b/formats/ctf/ir/event.c
index db55b26b..c168854e 100644
--- a/formats/ctf/ir/event.c
+++ b/formats/ctf/ir/event.c
@@ -1230,3 +1230,71 @@ int bt_ctf_event_set_stream(struct bt_ctf_event *event,
 end:
 	return ret;
 }
+
+struct bt_ctf_event *bt_ctf_event_copy(struct bt_ctf_event *event)
+{
+	struct bt_ctf_event *copy = NULL;
+
+	if (!event) {
+		goto error;
+	}
+
+	copy = g_new0(struct bt_ctf_event, 1);
+	if (!copy) {
+		goto error;
+	}
+
+	bt_ctf_ref_init(&copy->ref_count);
+	copy->event_class = event->event_class;
+	bt_ctf_event_class_get(copy->event_class);
+	copy->stream = event->stream;
+
+	if (event->event_header) {
+		copy->event_header = bt_ctf_field_copy(event->event_header);
+
+		if (!copy->event_header) {
+			goto error;
+		}
+	}
+
+	if (event->context_payload) {
+		copy->context_payload = bt_ctf_field_copy(
+			event->context_payload);
+
+		if (!copy->context_payload) {
+			goto error;
+		}
+	}
+
+	if (event->fields_payload) {
+		copy->fields_payload = bt_ctf_field_copy(event->fields_payload);
+
+		if (!copy->fields_payload) {
+			goto error;
+		}
+	}
+
+	return copy;
+
+error:
+	if (copy) {
+		if (copy->event_class) {
+			bt_ctf_event_class_put(copy->event_class);
+		}
+
+		if (copy->event_header) {
+			bt_ctf_field_put(copy->event_header);
+		}
+
+		if (copy->context_payload) {
+			bt_ctf_field_put(copy->context_payload);
+		}
+
+		if (copy->fields_payload) {
+			bt_ctf_field_put(copy->fields_payload);
+		}
+	}
+
+	g_free(copy);
+	return NULL;
+}
diff --git a/include/babeltrace/ctf-ir/event.h b/include/babeltrace/ctf-ir/event.h
index 316c6eed..63bd74e5 100644
--- a/include/babeltrace/ctf-ir/event.h
+++ b/include/babeltrace/ctf-ir/event.h
@@ -474,6 +474,19 @@ extern struct bt_ctf_field *bt_ctf_event_get_event_context(
 extern int bt_ctf_event_set_event_context(struct bt_ctf_event *event,
 		struct bt_ctf_field *context);
 
+/*
+ * bt_ctf_event_copy: Deep-copy an event.
+ *
+ * Get an event's deep copy.
+ *
+ * On success, the returned copy has its reference count set to 1.
+ *
+ * @param event Event to copy.
+ *
+ * Returns the deep-copied event on success, NULL on error.
+ */
+extern struct bt_ctf_event *bt_ctf_event_copy(struct bt_ctf_event *event);
+
 /*
  * bt_ctf_event_get and bt_ctf_event_put: increment and decrement
  * the event's reference count.
-- 
2.34.1