made BlockingQueue stable

FlippR-Driver/src/utilities/BlockingQueue.hpp

@@ -10,8 +10,9 @@
 
 #include <mutex>
 #include <condition_variable>
-#include <deque>
-#include <queue>
+#include <boost/heap/priority_queue.hpp>
+
+using namespace boost;
 
 template <typename T>
 class BlockingQueue
@@ -19,21 +20,22 @@ class BlockingQueue
 private:
     std::mutex              d_mutex;
     std::condition_variable d_condition;
-    std::priority_queue<T>  d_queue;
+    heap::priority_queue<T, heap::stable<T>> p_queue;
+
 public:
     void push(T const& value) {
         {
             std::unique_lock<std::mutex> lock(this->d_mutex);
-            d_queue.push_front(value);
+            p_queue.push_front(value);
         }
         this->d_condition.notify_one();
     }
 
     T pop() {
         std::unique_lock<std::mutex> lock(this->d_mutex);
-        this->d_condition.wait(lock, [=]{ return !this->d_queue.empty(); });
-        T rc(std::move(this->d_queue.back()));
-        this->d_queue.pop_back();
+        this->d_condition.wait(lock, [=]{ return !this->p_queue.empty(); });
+        T rc(std::move(this->p_queue.back()));
+        this->p_queue.pop_back();
         return rc;
     }
 };