From d3b013be1cdbf2c89847a3e900a6eeacdad5486e Mon Sep 17 00:00:00 2001
From: Teravus Ovares <teravus@gmail.com>
Date: Sun, 25 May 2008 02:39:58 +0000
Subject: [PATCH] * Releases Pinned vertex/index list in ODE on next mesh
 request.

---
 OpenSim/Region/Physics/Manager/IMesher.cs   |  2 ++
 OpenSim/Region/Physics/Meshing/Mesh.cs      | 14 +++++++++++---
 OpenSim/Region/Physics/OdePlugin/ODEPrim.cs | 17 +++++++++++++++--
 3 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/OpenSim/Region/Physics/Manager/IMesher.cs b/OpenSim/Region/Physics/Manager/IMesher.cs
index ee498c5e38..b5fc95c35c 100644
--- a/OpenSim/Region/Physics/Manager/IMesher.cs
+++ b/OpenSim/Region/Physics/Manager/IMesher.cs
@@ -46,5 +46,7 @@ namespace OpenSim.Region.Physics.Manager
         int[] getIndexListAsInt();
         int[] getIndexListAsIntLocked();
         float[] getVertexListAsFloatLocked();
+        void releasePinned();
+        
     }
 }
diff --git a/OpenSim/Region/Physics/Meshing/Mesh.cs b/OpenSim/Region/Physics/Meshing/Mesh.cs
index 1b0444baba..652bbd759e 100644
--- a/OpenSim/Region/Physics/Meshing/Mesh.cs
+++ b/OpenSim/Region/Physics/Meshing/Mesh.cs
@@ -37,7 +37,8 @@ namespace OpenSim.Region.Physics.Meshing
     {
         public List<Vertex> vertices;
         public List<Triangle> triangles;
-
+        GCHandle pinnedVirtexes;
+        GCHandle pinnedIndex;
         public float[] normals;
 
         public Mesh()
@@ -164,7 +165,7 @@ namespace OpenSim.Region.Physics.Meshing
                 result[3*i + 1] = v.Y;
                 result[3*i + 2] = v.Z;
             }
-            GCHandle.Alloc(result, GCHandleType.Pinned);
+            pinnedVirtexes = GCHandle.Alloc(result, GCHandleType.Pinned);
             return result;
         }
 
@@ -184,10 +185,17 @@ namespace OpenSim.Region.Physics.Meshing
         public int[] getIndexListAsIntLocked()
         {
             int[] result = getIndexListAsInt();
-            GCHandle.Alloc(result, GCHandleType.Pinned);
+            pinnedIndex = GCHandle.Alloc(result, GCHandleType.Pinned);
             return result;
         }
 
+        public void releasePinned()
+        {
+            pinnedVirtexes.Free();
+            pinnedIndex.Free();
+
+        }
+
 
         public void Append(Mesh newMesh)
         {
diff --git a/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs b/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs
index 1ba4bb16af..4c8eb20fd9 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs
+++ b/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs
@@ -69,6 +69,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         private float PID_G = 25f;
         private float m_tensor = 5f;
         private int body_autodisable_frames = 20;
+        private IMesh primMesh = null;
 
         private bool m_usePID = false;
 
@@ -674,8 +675,13 @@ namespace OpenSim.Region.Physics.OdePlugin
                 disableBody();
             }
 
-            float[] vertexList = mesh.getVertexListAsFloatLocked(); // Note, that vertextList is pinned in memory
-            int[] indexList = mesh.getIndexListAsIntLocked(); // Also pinned, needs release after usage
+            IMesh oldMesh = primMesh;
+
+            primMesh = mesh;
+
+            float[] vertexList = primMesh.getVertexListAsFloatLocked(); // Note, that vertextList is pinned in memory
+            int[] indexList = primMesh.getIndexListAsIntLocked(); // Also pinned, needs release after usage
+
             int VertexCount = vertexList.GetLength(0)/3;
             int IndexCount = indexList.GetLength(0);
 
@@ -699,6 +705,13 @@ namespace OpenSim.Region.Physics.OdePlugin
                 m_log.Error("[PHYSICS]: MESH LOCKED");
                 return;
             }
+
+            if (oldMesh != null)
+            {
+                oldMesh.releasePinned();
+                oldMesh = null;
+            }
+
             if (IsPhysical && Body == (IntPtr) 0)
             {
                 // Recreate the body