From: Samuel Just <sjust@redhat.com>
Date: Wed, 14 Jan 2015 16:35:15 +0000 (-0800)
Subject: common/shared_cache.hpp: empty() iff weak_refs is empty
X-Git-Tag: v0.93~163^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=33ba23f06b469e19d0d859250892530c53d5abf6;p=ceph.git

common/shared_cache.hpp: empty() iff weak_refs is empty

Also, add a comment to clarify usage.

Signed-off-by: Samuel Just <sjust@redhat.com>
---

diff --git a/src/common/shared_cache.hpp b/src/common/shared_cache.hpp
index c4e65e467cb8..7bdf03ee24e3 100644
--- a/src/common/shared_cache.hpp
+++ b/src/common/shared_cache.hpp
@@ -303,9 +303,15 @@ public:
     }
   }
 
+  /**
+   * empty()
+   *
+   * Returns true iff there are no live references left to anything that has been
+   * in the cache.
+   */
   bool empty() {
     Mutex::Locker l(lock);
-    return contents.empty();
+    return weak_refs.empty();
   }
 
   /***