From 1f1d559e204de16024dffe3a408116b70f83e0b6 Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Thu, 8 Dec 2011 16:24:15 +0000
Subject: [PATCH] ENH: globalIndex: work in local mode

---
 .../meshes/polyMesh/globalMeshData/globalIndex.C   | 14 +++++++++++---
 .../meshes/polyMesh/globalMeshData/globalIndex.H   |  7 ++++++-
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.C b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.C
index a432ae889b..6765ee8378 100644
--- a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.C
+++ b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.C
@@ -27,14 +27,22 @@ License
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
-Foam::globalIndex::globalIndex(const label localSize, const int tag)
+Foam::globalIndex::globalIndex
+(
+    const label localSize,
+    const int tag,
+    const bool parallel
+)
 :
     offsets_(Pstream::nProcs()+1)
 {
     labelList localSizes(Pstream::nProcs());
     localSizes[Pstream::myProcNo()] = localSize;
-    Pstream::gatherList(localSizes, tag);
-    Pstream::scatterList(localSizes, tag);
+    if (parallel)
+    {
+        Pstream::gatherList(localSizes, tag);
+        Pstream::scatterList(localSizes, tag);
+    }
 
     label offset = 0;
     offsets_[0] = 0;
diff --git a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.H b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.H
index 1bd8347050..c712066f4a 100644
--- a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.H
+++ b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.H
@@ -72,7 +72,12 @@ public:
     // Constructors
 
         //- Construct from local max size
-        globalIndex(const label localSize, const int tag = Pstream::msgType());
+        globalIndex
+        (
+            const label localSize,
+            const int tag = Pstream::msgType(),
+            const bool parallel = true              // use parallel comms
+        );
 
         //- Construct from Istream
         globalIndex(Istream& is);