From 884cd6c32dddeb5e9fa8d0255992956112381123 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=A9mie=20Galarneau?=
 <jeremie.galarneau@efficios.com>
Date: Mon, 20 Oct 2014 13:39:46 -0400
Subject: [PATCH] Add clock accessor to CTF IR Trace
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Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---
 formats/ctf/ir/trace.c            | 28 ++++++++++++++++++++++++++++
 include/babeltrace/ctf-ir/trace.h | 21 +++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/formats/ctf/ir/trace.c b/formats/ctf/ir/trace.c
index 073e4abf..1ad37bec 100644
--- a/formats/ctf/ir/trace.c
+++ b/formats/ctf/ir/trace.c
@@ -282,6 +282,34 @@ end:
 	return ret;
 }
 
+int bt_ctf_trace_get_clock_count(struct bt_ctf_trace *trace)
+{
+	int ret = -1;
+
+	if (!trace) {
+		goto end;
+	}
+
+	ret = trace->clocks->len;
+end:
+	return ret;
+}
+
+struct bt_ctf_clock *bt_ctf_trace_get_clock(struct bt_ctf_trace *trace,
+		int index)
+{
+	struct bt_ctf_clock *clock = NULL;
+
+	if (!trace || index < 0 || index >= trace->clocks->len) {
+		goto end;
+	}
+
+	clock = g_ptr_array_index(trace->clocks, index);
+	bt_ctf_clock_get(clock);
+end:
+	return clock;
+}
+
 BT_HIDDEN
 const char *get_byte_order_string(int byte_order)
 {
diff --git a/include/babeltrace/ctf-ir/trace.h b/include/babeltrace/ctf-ir/trace.h
index 1be85cfd..d36da0eb 100644
--- a/include/babeltrace/ctf-ir/trace.h
+++ b/include/babeltrace/ctf-ir/trace.h
@@ -95,6 +95,27 @@ extern int bt_ctf_trace_add_environment_field(struct bt_ctf_trace *trace,
 extern int bt_ctf_trace_add_clock(struct bt_ctf_trace *trace,
 		struct bt_ctf_clock *clock);
 
+/*
+ * bt_ctf_trace_get_clock_count: get the number of clocks
+ *	associated to the trace.
+ *
+ * @param trace Trace instance.
+ *
+ * Returns the clock count on success, a negative value on error.
+ */
+extern int bt_ctf_trace_get_clock_count(struct bt_ctf_trace *trace);
+
+/*
+ * bt_ctf_trace_get_clock: get a trace's clock at index.
+ *
+ * @param trace Trace instance.
+ * @param index Index of the clock in the given trace.
+ *
+ * Return a clock instance on success, NULL on error.
+ */
+extern struct bt_ctf_clock *bt_ctf_trace_get_clock(
+		struct bt_ctf_trace *trace, int index);
+
 /*
  * bt_ctf_trace_get_metadata_string: get metadata string.
  *
-- 
2.34.1