From: David Goulet <dgoulet@efficios.com>
Date: Mon, 21 Jan 2013 20:49:45 +0000 (-0500)
Subject: Add an allocation function for ust stream
X-Git-Tag: v2.2.0-rc1~100
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=37f1c23617e54ba79c11ff6dc4c4ce7ad07f7be9;p=lttng-tools.git

Add an allocation function for ust stream

Signed-off-by: David Goulet <dgoulet@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index 397a2dfab..f6f2c64ae 100644
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -378,6 +378,28 @@ error:
 	return NULL;
 }
 
+/*
+ * Allocate and initialize a UST app stream.
+ *
+ * Return newly allocated stream pointer or NULL on error.
+ */
+static struct ust_app_stream *alloc_ust_app_stream(void)
+{
+	struct ust_app_stream *stream = NULL;
+
+	stream = zmalloc(sizeof(*stream));
+	if (stream == NULL) {
+		PERROR("zmalloc ust app stream");
+		goto error;
+	}
+
+	/* Zero could be a valid value for a handle so flag it to -1. */
+	stream->handle = -1;
+
+error:
+	return stream;
+}
+
 /*
  * Alloc new UST app event.
  */
@@ -2362,9 +2384,8 @@ int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
 		/* Create all streams */
 		while (1) {
 			/* Create UST stream */
-			ustream = zmalloc(sizeof(*ustream));
+			ustream = alloc_ust_app_stream();
 			if (ustream == NULL) {
-				PERROR("zmalloc ust stream");
 				goto error_rcu_unlock;
 			}