From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Tue, 22 Nov 2016 09:30:33 +0000 (-0500)
Subject: ref-internal.h: do not increment ref count if release not set
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0c747e0de732637ad24f5d7c8c8671a55adcaf56;p=deliverable%2Fbabeltrace.git

ref-internal.h: do not increment ref count if release not set

A singleton BT object can choose to opt-out of the reference count
mechanism. The way to do this is to set the release callback to
NULL. When this is the case, do not increment its reference count;
keep it at its original value.

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

diff --git a/include/babeltrace/ref-internal.h b/include/babeltrace/ref-internal.h
index 8578de97b..cf1547da9 100644
--- a/include/babeltrace/ref-internal.h
+++ b/include/babeltrace/ref-internal.h
@@ -50,6 +50,11 @@ static inline
 void bt_ref_get(struct bt_ref *ref)
 {
 	assert(ref);
+
+	if (!ref->release) {
+		return;
+	}
+
 	ref->count++;
 	/* Overflow check. */
 	assert(ref->count);