1 files changed, 136 insertions, 0 deletions
diff --git a/cpp/demo/IceUtil/workqueue/WorkQueue.cpp b/cpp/demo/IceUtil/workqueue/WorkQueue.cpp
new file mode 100644
index 00000000000..789879821fb
--- /dev/null
+++ b/cpp/demo/IceUtil/workqueue/WorkQueue.cpp
@@ -0,0 +1,136 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#include <IceUtil/IceUtil.h>
+#include <list>
+
+using namespace std;
+
+namespace
+{
+IceUtil::Mutex* outputMutex = 0;
+
+class Init
+{
+public:
+
+    Init()
+    {
+        outputMutex = new IceUtil::Mutex;
+    }
+
+    ~Init()
+    {
+        delete outputMutex;
+        outputMutex = 0;
+    }
+};
+
+Init init;
+
+}
+
+void
+mtprint(const string& data)
+{
+    IceUtil::Mutex::Lock sync(*outputMutex);
+    cout << data << flush;
+}
+
+class WorkQueue : public IceUtil::Thread
+{
+public:
+
+    WorkQueue() { }
+    ~WorkQueue() { }
+
+    virtual void
+    run()
+    {
+        while(1)
+        {
+            string item = nextItem();
+            if(item == "destroy")
+            {
+                break;
+            }
+
+            mtprint("work item: " + item + "\n");
+            IceUtil::ThreadControl::sleep(IceUtil::Time::seconds(1));
+        }
+    }
+
+    void
+    add(const string& item)
+    {
+        IceUtil::Monitor<IceUtil::Mutex>::Lock lock(_monitor);
+        if(_queue.empty())
+        {
+            _monitor.notify();
+        }
+        _queue.push_back(item);
+    }
+
+private:
+
+    string
+    nextItem()
+    {
+        IceUtil::Monitor<IceUtil::Mutex>::Lock lock(_monitor);
+        while(_queue.empty())
+        {
+            _monitor.wait();
+        }
+        
+        string item = _queue.front();
+        _queue.pop_front();
+        return item;
+    }
+
+
+    IceUtil::Monitor<IceUtil::Mutex> _monitor;
+    list<string> _queue;
+};
+
+typedef IceUtil::Handle<WorkQueue> WorkQueuePtr;
+
+int
+main()
+{
+    try
+    {
+        WorkQueuePtr h = new WorkQueue();
+        IceUtil::ThreadControl control = h->start();
+        mtprint("Pushing work items");
+        mtprint(".");
+        h->add("item1");
+        mtprint(".");
+        h->add("item2");
+        mtprint(".");
+        h->add("item3");
+        mtprint(".");
+        h->add("item4");
+        mtprint(".");
+        h->add("item5");
+        mtprint(".");
+        h->add("destroy");
+        mtprint("ok\n");
+        mtprint("Waiting for WorkQueue to terminate\n");
+        control.join();
+    }
+    catch(const IceUtil::Exception& ex)
+    {
+        ostringstream os;
+        os << ex << "\n";
+        mtprint(os.str());
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}