From 48a011a89cd17b00801ade91aa755f7adde44e11 Mon Sep 17 00:00:00 2001
From: Adam Kocoloski <adam@cloudant.com>
Date: Wed, 29 Jun 2011 11:24:33 -0400
Subject: Guard against dead fd process in is_idle/1

BugzID: 12365
---
 apps/couch/src/couch_db.erl | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'apps')

diff --git a/apps/couch/src/couch_db.erl b/apps/couch/src/couch_db.erl
index b9b66f4b..dec6870f 100644
--- a/apps/couch/src/couch_db.erl
+++ b/apps/couch/src/couch_db.erl
@@ -112,8 +112,12 @@ open_ref_counted(MainPid, OpenedPid) ->
     gen_server:call(MainPid, {open_ref_count, OpenedPid}).
 
 is_idle(#db{compactor_pid=nil, waiting_delayed_commit=nil} = Db) ->
-    {monitored_by, Pids} = erlang:process_info(Db#db.fd, monitored_by),
-    (Pids -- [Db#db.main_pid, whereis(couch_stats_collector)]) =:= [];
+    case erlang:process_info(Db#db.fd, monitored_by) of
+    undefined ->
+        true;
+    {monitored_by, Pids} ->
+        (Pids -- [Db#db.main_pid, whereis(couch_stats_collector)]) =:= []
+    end;
 is_idle(_Db) ->
     false.
 
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