1 files changed, 104 insertions, 0 deletions
diff --git a/trunk/qpid/cpp/src/qpid/broker/Timer.cpp b/trunk/qpid/cpp/src/qpid/broker/Timer.cpp
new file mode 100644
index 0000000000..0b0d3ba63d
--- /dev/null
+++ b/trunk/qpid/cpp/src/qpid/broker/Timer.cpp
@@ -0,0 +1,104 @@
+/*
+ *
+ * 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 "Timer.h"
+#include <iostream>
+
+using boost::intrusive_ptr;
+using qpid::sys::AbsTime;
+using qpid::sys::Duration;
+using qpid::sys::Monitor;
+using qpid::sys::Thread;
+using namespace qpid::broker;
+
+TimerTask::TimerTask(Duration timeout) :
+    duration(timeout), time(AbsTime::now(), timeout), cancelled(false) {}
+
+TimerTask::TimerTask(AbsTime _time) :
+    duration(0), time(_time), cancelled(false) {}
+
+TimerTask::~TimerTask(){}
+
+void TimerTask::reset() { time = AbsTime(AbsTime::now(), duration); }
+
+Timer::Timer() : active(false) 
+{
+    start();
+}
+
+Timer::~Timer() 
+{
+    stop();
+}
+
+void Timer::run()
+{
+    Monitor::ScopedLock l(monitor);
+    while(active){
+        if (tasks.empty()) {
+            monitor.wait();
+        } else {
+            intrusive_ptr<TimerTask> t = tasks.top();
+            if (t->cancelled) {
+                tasks.pop();
+            } else if(t->time < AbsTime::now()) {
+                tasks.pop();
+                Monitor::ScopedUnlock u(monitor);
+                t->fire();
+            } else {
+                monitor.wait(t->time);
+            }
+        }
+    }
+}
+
+void Timer::add(intrusive_ptr<TimerTask> task)
+{
+    Monitor::ScopedLock l(monitor);
+    tasks.push(task);
+    monitor.notify();
+}
+
+void Timer::start()
+{
+    Monitor::ScopedLock l(monitor);
+    if (!active) {
+        active = true;
+        runner = Thread(this);
+    }
+}
+
+void Timer::stop()
+{
+    {
+        Monitor::ScopedLock l(monitor);
+        if (!active) return;
+        active = false;
+        monitor.notifyAll();
+    }
+    runner.join();
+}
+
+bool Later::operator()(const intrusive_ptr<TimerTask>& a,
+                       const intrusive_ptr<TimerTask>& b) const
+{
+    return a.get() && b.get() && a->time > b->time;
+}
+