1 files changed, 64 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/PollableCondition.h b/qpid/cpp/src/qpid/sys/PollableCondition.h
new file mode 100644
index 0000000000..2eb6f2d947
--- /dev/null
+++ b/qpid/cpp/src/qpid/sys/PollableCondition.h
@@ -0,0 +1,64 @@
+#ifndef QPID_SYS_POLLABLECONDITION_H
+#define QPID_SYS_POLLABLECONDITION_H
+
+/*
+ *
+ * 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.
+ *
+ */
+
+#include "qpid/sys/Poller.h"
+#include "qpid/CommonImportExport.h"
+#include <boost/function.hpp>
+#include <boost/shared_ptr.hpp>
+
+
+namespace qpid {
+namespace sys {
+
+class PollableConditionPrivate;
+
+class PollableCondition {
+public:
+    typedef boost::function1<void, PollableCondition&> Callback;
+
+    QPID_COMMON_EXTERN PollableCondition(const Callback& cb,
+                      const boost::shared_ptr<sys::Poller>& poller);
+
+    QPID_COMMON_EXTERN ~PollableCondition();
+
+    /**
+     * Set the condition. Triggers callback to Callback from Poller.
+     */
+    QPID_COMMON_EXTERN void set();
+
+    /**
+     * Clear the condition. Stops callbacks from Poller.
+     */
+    QPID_COMMON_EXTERN void clear();
+
+ private:
+    PollableConditionPrivate *impl;
+
+    Callback callback;
+    boost::shared_ptr<sys::Poller> poller;
+};
+
+}} // namespace qpid::sys
+
+#endif  /*!QPID_SYS_POLLABLECONDITION_H*/