X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=formats%2Fctf%2Fiterator.c;fp=formats%2Fctf%2Fiterator.c;h=6f8eb88a9de7b769817de518a1abf56db9e7f115;hp=e5d32a890b503220a9ecefde2c31ae8464b12030;hb=8200883463ae0329f8f5053d898614fd5051abc3;hpb=3696d792f2434ad2b64b76cbe56a6d73399b2952

diff --git a/formats/ctf/iterator.c b/formats/ctf/iterator.c
index e5d32a89..6f8eb88a 100644
--- a/formats/ctf/iterator.c
+++ b/formats/ctf/iterator.c
@@ -63,6 +63,41 @@ struct bt_ctf_iter *bt_ctf_iter_create(struct bt_context *ctx,
 	return iter;
 }
 
+struct bt_ctf_iter *bt_ctf_iter_create_intersect(struct bt_context *ctx,
+		struct bt_iter_pos **inter_begin_pos,
+		struct bt_iter_pos **inter_end_pos)
+{
+	uint64_t begin = 0, end = ULLONG_MAX;
+	int ret;
+
+	ret = ctf_find_packets_intersection(ctx, &begin, &end);
+	if (ret == 1) {
+		fprintf(stderr, "[error] No intersection found between trace files.\n");
+		goto error;
+	} else if (ret != 0) {
+		goto error;
+	}
+	*inter_begin_pos = bt_iter_create_time_pos(NULL, begin);
+	if (!(*inter_begin_pos)) {
+		goto error;
+	}
+	*inter_end_pos = bt_iter_create_time_pos(NULL, end);
+	if (!(*inter_end_pos)) {
+		goto error;
+	}
+
+	/*
+	 * bt_ctf_iter does not take ownership of begin and end positions,
+	 * so we return them to the caller who must still assume their ownership
+	 * until the iterator is destroyed.
+	 */
+	return bt_ctf_iter_create(ctx, *inter_begin_pos,
+			*inter_end_pos);
+error:
+	return NULL;
+}
+
+
 void bt_ctf_iter_destroy(struct bt_ctf_iter *iter)
 {
 	struct bt_stream_callbacks *bt_stream_cb;