From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Fri, 13 Jan 2017 20:24:27 +0000 (-0500)
Subject: ir: stream: add bt_ctf_stream_is_writer()
X-Git-Tag: v2.0.0-pre1~581
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=98a4cbefe4c162067144bf5e1b7341c8dd8767bb

ir: stream: add bt_ctf_stream_is_writer()

This function indicates whether or not the stream is in
"CTF writer mode", that is, its trace parent was created by a
CTF writer object and it has an open file descriptor.

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

diff --git a/formats/ctf/ir/stream.c b/formats/ctf/ir/stream.c
index d4dbc447..5e9e1337 100644
--- a/formats/ctf/ir/stream.c
+++ b/formats/ctf/ir/stream.c
@@ -1000,3 +1000,17 @@ const char *bt_ctf_stream_get_name(struct bt_ctf_stream *stream)
 end:
 	return name;
 }
+
+int bt_ctf_stream_is_writer(struct bt_ctf_stream *stream)
+{
+	int ret = -1;
+
+	if (!stream) {
+		goto end;
+	}
+
+	ret = (stream->pos.fd >= 0);
+
+end:
+	return ret;
+}
diff --git a/include/babeltrace/ctf-writer/stream.h b/include/babeltrace/ctf-writer/stream.h
index f8ad7b83..56b6bff8 100644
--- a/include/babeltrace/ctf-writer/stream.h
+++ b/include/babeltrace/ctf-writer/stream.h
@@ -152,6 +152,8 @@ extern int bt_ctf_stream_set_packet_context(
  */
 extern int bt_ctf_stream_flush(struct bt_ctf_stream *stream);
 
+extern int bt_ctf_stream_is_writer(struct bt_ctf_stream *stream);
+
 /*
  * bt_ctf_stream_get and bt_ctf_stream_put: increment and decrement the
  * stream's reference count.