Fixes for 1.9.1 compatibility.

Rakefile

@@ -19,6 +19,7 @@ desc "Test the MongoDB Ruby driver."
 task :test do
   Rake::Task['test:unit'].invoke
   Rake::Task['test:functional'].invoke
+  Rake::Task['test:pooled_threading'].invoke
 end
 
 namespace :test do 
@@ -32,6 +33,11 @@ namespace :test do
     t.verbose    = true
   end
 
+  Rake::TestTask.new(:pooled_threading) do |t|
+    t.test_files = FileList['test/threading/*.rb']
+    t.verbose    = true
+  end
+
   Rake::TestTask.new(:pair_count) do |t|
     t.test_files = FileList['test/replica/count_test.rb']
     t.verbose    = true

lib/mongo/connection.rb

@@ -383,7 +383,7 @@ module Mongo
           next if @checked_out.size < @sockets.size
 
           # Otherwise, wait.
-          if @queue.wait(@timeout)
+          if wait
             next
           else
 
@@ -399,6 +399,20 @@ module Mongo
       end # synchronize
     end
 
+    if RUBY_VERSION >= '1.9'
+      # Ruby 1.9's Condition Variables don't support timeouts yet;
+      # until they do, we'll make do with this hack. 
+      def wait
+        Timeout.timeout(@timeout) do 
+          @queue.wait
+        end
+      end
+    else
+      def wait
+        @queue.wait(@timeout)
+      end
+    end
+
     def receive(sock)
       receive_header(sock)
       number_received, cursor_id = receive_response_header(sock)

lib/mongo/db.rb

@@ -305,7 +305,7 @@ module Mongo
       sel = {:ns => full_collection_name(collection_name)}
       info = {}
       Cursor.new(Collection.new(self, SYSTEM_INDEX_COLLECTION), :selector => sel).each { |index|
-        info[index['name']] = index['key'].map
+        info[index['name']] = index['key'].map {|k| k}
       }
       info
     end