Timeout handling for dtx, plus tests.

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@545531 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 100 insertions, 0 deletions

diff --git a/cpp/src/qpid/broker/Timer.cpp b/cpp/src/qpid/broker/Timer.cpp
new file mode 100644
index 0000000000..be75346578
--- /dev/null
+++ b/cpp/src/qpid/broker/Timer.cpp
@@ -0,0 +1,100 @@
+/*
+ *
+ * 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 qpid::sys::AbsTime;
+using qpid::sys::Duration;
+using qpid::sys::Monitor;
+using qpid::sys::Thread;
+using namespace qpid::broker;
+
+TimerTask::TimerTask(Duration timeout) : time(AbsTime::now(), timeout), cancelled(false) {}
+TimerTask::TimerTask(AbsTime _time) : time(_time), cancelled(false) {}
+TimerTask::~TimerTask(){}
+
+Timer::Timer() : active(false) 
+{
+    start();
+}
+
+Timer::~Timer() 
+{
+    stop();
+}
+
+void Timer::run()
+{
+    Monitor::ScopedLock l(monitor);
+    while(active){
+        if (tasks.empty()) {
+            monitor.wait();
+        } else {
+            TimerTask::shared_ptr t = tasks.top();
+            if (t->cancelled) {
+                tasks.pop();
+            } else if(t->time < AbsTime::now()) {
+                tasks.pop();
+                t->fire();
+            } else {
+                monitor.wait(t->time);
+            }
+        }
+    }
+}
+
+void Timer::add(TimerTask::shared_ptr task)
+{
+    Monitor::ScopedLock l(monitor);
+    tasks.push(task);
+    monitor.notify();
+}
+
+void Timer::start()
+{
+    Monitor::ScopedLock l(monitor);
+    if (!active) {
+        active = true;
+        runner = std::auto_ptr<Thread>(new Thread(this));
+    }
+}
+
+void Timer::stop()
+{
+    signalStop();
+    if (runner.get()) {
+        runner->join();
+        runner.reset();
+    }
+}
+void Timer::signalStop()
+{
+    Monitor::ScopedLock l(monitor);
+    if (active) {
+        active = false;
+        monitor.notifyAll();
+    }
+}
+
+bool Later::operator()(const TimerTask::shared_ptr& a, const TimerTask::shared_ptr& b) const
+{
+    return a.get() && b.get() && a->time > b->time;
+}