Applied Mattijs' PackedList improvements

- resize with factor 2 as per DynamicList

Old insertion speed:
    1000000 in 0.61 s
    2000000 in 2.24 s
    3000000 in 3.97 s
    4000000 in 5.76 s
    5000000 in 7.54 s
    6000000 in 9.41 s
    7000000 in 11.5 s

New insertion speed:
    1000000 in 0.01 s
    2000000 in 0.02 s
    3000000 in 0.01 s
    4000000 in 0.02 s
    5000000 in 0.01 s
    6000000 in 0.01 s
    7000000 in 0.01 s

applications/test/PackedList3/Make/files

@@ -0,0 +1,3 @@
+PackedListTest3.C
+
+EXE = $(FOAM_USER_APPBIN)/PackedListTest3

applications/test/PackedList3/PackedListTest3.C

@@ -0,0 +1,75 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+Application
+
+Description
+
+\*---------------------------------------------------------------------------*/
+
+#include "argList.H"
+#include "boolList.H"
+#include "HashSet.H"
+#include "StaticHashTable.H"
+#include "cpuTime.H"
+#include <vector>
+#include "PackedList.H"
+#include "PackedBoolList.H"
+
+using namespace Foam;
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+
+// Main program:
+
+int main(int argc, char *argv[])
+{
+    const label n = 100000000;
+    const label nReport = 1000000;
+
+    cpuTime timer;
+
+    // test inserts
+    // PackedBoolList
+    PackedBoolList packed;
+    for (label i = 0; i < n; i++)
+    {
+        if ((i % nReport) == 0 && i)
+        {
+            Info<< "i:" << i << " in " << timer.cpuTimeIncrement() << " s" 
+                <<endl;
+        }
+        packed[i] = 1;
+    }
+    Info<< "insert test: " << n << " elements in "
+        << timer.cpuTimeIncrement() << " s\n\n";
+
+    Info << "\nEnd\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

src/OpenFOAM/containers/Lists/PackedList/PackedListI.H

@@ -670,7 +670,16 @@ inline void Foam::PackedList<nBits>::reserve
     // need more capacity?
     if (len > StorageList::size())
     {
-        StorageList::setSize(len, 0u);
+        // Like DynamicList with SizeInc=0, SizeMult=2, SizeDiv=1
+        StorageList::setSize
+        (
+            max
+            (
+                len,
+                StorageList::size()*2
+            ),
+            0u
+        );
     }
 }