1 files changed, 75 insertions, 0 deletions
diff --git a/qpid/ruby/lib/qpid/util.rb b/qpid/ruby/lib/qpid/util.rb
new file mode 100644
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+++ b/qpid/ruby/lib/qpid/util.rb
@@ -0,0 +1,75 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+require 'thread'
+require 'monitor'
+
+# Monkeypatch
+class MonitorMixin::ConditionVariable
+
+  # Wait until BLOCK returns TRUE or TIMEOUT seconds have passed
+  # Return TRUE if BLOCK returned TRUE within the TIMEOUT, FALSE
+  # otherswise
+  def wait_for(timeout=nil, &block)
+    start = Time.now
+    passed = 0
+    until yield
+      if timeout.nil?
+        wait
+      elsif passed < timeout
+        wait(timeout)
+      else
+        return false
+      end
+      passed = Time.now - start
+    end
+    return true
+  end
+end
+
+module Qpid::Util
+
+  # Similar to Python's threading.Event
+  class Event
+    def initialize
+      @monitor = Monitor.new
+      @cond = @monitor.new_cond
+      @set = false
+    end
+
+    def set
+      @monitor.synchronize do
+        @set = true
+        @cond.signal
+      end
+    end
+
+    def clear
+      @monitor.synchronize { @set = false }
+    end
+
+    def wait(timeout = nil)
+      @monitor.synchronize do
+        unless @set
+          @cond.wait_for(timeout) { @set }
+        end
+      end
+    end
+  end
+end