From aed9cae83affd8ce8f82586c551279eddd6e0ccf Mon Sep 17 00:00:00 2001
From: Tom Henderson <tomh@tomh.org>
Date: Fri, 31 Mar 2017 16:12:49 -0700
Subject: [PATCH] mobility:  Add GetSize() method to ListPositionAllocator

---
 src/mobility/model/position-allocator.cc | 6 ++++++
 src/mobility/model/position-allocator.h  | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/src/mobility/model/position-allocator.cc b/src/mobility/model/position-allocator.cc
index 8aa8cfa6a..5a01278f8 100644
--- a/src/mobility/model/position-allocator.cc
+++ b/src/mobility/model/position-allocator.cc
@@ -87,6 +87,12 @@ ListPositionAllocator::AssignStreams (int64_t stream)
   return 0;
 }
 
+uint32_t
+ListPositionAllocator::GetSize (void) const
+{
+  return m_positions.size ();
+}
+
 NS_OBJECT_ENSURE_REGISTERED (GridPositionAllocator);
 
 TypeId 
diff --git a/src/mobility/model/position-allocator.h b/src/mobility/model/position-allocator.h
index dda795f8a..d33aee430 100644
--- a/src/mobility/model/position-allocator.h
+++ b/src/mobility/model/position-allocator.h
@@ -83,6 +83,14 @@ public:
    * \param v the position to append at the end of the list of positions to return from GetNext.
    */
   void Add (Vector v);
+  /**
+   * Return the number of positions stored.  Note that this will not change
+   * based on calling GetNext(), as the number of positions is not altered
+   * by calling GetNext ().
+   *
+   * \return the number of positions stored
+   */
+  uint32_t GetSize (void) const;
   virtual Vector GetNext (void) const;
   virtual int64_t AssignStreams (int64_t stream);
 private: