From baa779ddaaffdf410f73167991ec3ead4b6859fd Mon Sep 17 00:00:00 2001
From: Jesper Louis Andersen <jesper.louis.andersen@gmail.com>
Date: Sat, 21 Jan 2012 21:17:33 +0100
Subject: [PATCH] Fix a bug in lsm_tree:close/1.

There is a race condition based on the monitor set in a call. We might
get a normal exit from the monitor message deep inside gen_server.
This has to be handled. I've seen this race in my QC tests.
---
 src/lsm_btree.erl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lsm_btree.erl b/src/lsm_btree.erl
index 80929cc..4890984 100644
--- a/src/lsm_btree.erl
+++ b/src/lsm_btree.erl
@@ -23,7 +23,9 @@ close(Ref) ->
         gen_server:call(Ref, close)
     catch
         exit:{noproc,_} -> ok;
-        exit:noproc -> ok
+        exit:noproc -> ok;
+        %% Handle the case where the monitor triggers
+        exit:{normal, _} -> ok
     end.