PackedList bugfix, HashTable tweak

- it was possible to create a PackedList::iterator from a
  PackedList::const_iterator and violate const-ness

- added HashTable::printInfo for emitting some information

- changed default table sizes from 100 -> 128 in preparation for future
  2^n table sizes

src/OpenFOAM/containers/HashTables/HashPtrTable/HashPtrTable.H

@@ -83,7 +83,7 @@ public:
     // Constructors
 
         //- Construct given initial table size
-        HashPtrTable(const label size = 100);
+        HashPtrTable(const label size = 128);
 
         //- Construct from Istream using given Istream constructor class
         template<class INew>

src/OpenFOAM/containers/HashTables/HashSet/HashSet.H

@@ -72,7 +72,7 @@ public:
     // Constructors
 
         //- Construct given initial size
-        HashSet(const label size = 100)
+        HashSet(const label size = 128)
         :
             HashTable<nil, Key, Hash>(size)
         {}

src/OpenFOAM/containers/HashTables/HashTable/HashTable.H

@@ -142,10 +142,10 @@ public:
     // Constructors
 
         //- Construct given initial table size
-        HashTable(const label size = 100);
+        HashTable(const label size = 128);
 
         //- Construct from Istream
-        HashTable(Istream&, const label size = 100);
+        HashTable(Istream&, const label size = 128);
 
         //- Construct as copy
         HashTable(const HashTable<T, Key, Hash>&);
@@ -183,6 +183,8 @@ public:
             //- Return the table of contents
             List<Key> toc() const;
 
+            //- Print information
+            Ostream& printInfo(Ostream&) const;
 
         // Edit
 

src/OpenFOAM/containers/HashTables/HashTable/HashTableIO.C

@@ -48,6 +48,45 @@ Foam::HashTable<T, Key, Hash>::HashTable(Istream& is, const label size)
 }
 
 
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+template<class T, class Key, class Hash>
+Foam::Ostream&
+Foam::HashTable<T, Key, Hash>::printInfo(Ostream& os) const
+{
+    label used = 0;
+    label maxChain = 0;
+    unsigned avgChain = 0;
+
+    for (label hashIdx = 0; hashIdx < tableSize_; ++hashIdx)
+    {
+        label count = 0;
+        for (hashedEntry* ep = table_[hashIdx]; ep; ep = ep->next_)
+        {
+            ++count;
+        }
+
+        if (count)
+        {
+            ++used;
+            avgChain += count;
+
+            if (maxChain < count)
+            {
+                maxChain = count;
+            }
+        }
+    }
+
+    os  << "HashTable<T,Key,Hash>"
+        << " elements:" << size() << " slots:" << used << "/" << tableSize_
+        << " chaining(avg/max):" << (used ? float(avgChain/used) : 0)
+        << "/" << maxChain << endl;
+
+    return os;
+}
+
+
 // * * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * //
 
 template<class T, class Key, class Hash>

src/OpenFOAM/containers/HashTables/Map/Map.H

@@ -63,7 +63,7 @@ public:
     // Constructors
 
         //- Construct given initial size
-        Map(const label size = 100)
+        Map(const label size = 128)
         :
             HashTable<T, label, Hash<label> >(size)
         {}

src/OpenFOAM/containers/HashTables/PtrMap/PtrMap.H

@@ -58,7 +58,7 @@ public:
     // Constructors
 
         //- Construct given initial map size
-        PtrMap(const label size = 100)
+        PtrMap(const label size = 128)
         :
             HashPtrTable<T, label, Hash<label> >(size)
         {}

src/OpenFOAM/containers/HashTables/StaticHashTable/StaticHashTable.H

@@ -141,10 +141,10 @@ public:
     // Constructors
 
         //- Construct given initial table size
-        StaticHashTable(const label size = 100);
+        StaticHashTable(const label size = 128);
 
         //- Construct from Istream
-        StaticHashTable(Istream&, const label size = 100);
+        StaticHashTable(Istream&, const label size = 128);
 
         //- Construct as copy
         StaticHashTable(const StaticHashTable<T, Key, Hash>&);
@@ -181,6 +181,9 @@ public:
             //- Return the table of contents
             List<Key> toc() const;
 
+            //- Print information
+            Ostream& printInfo(Ostream&) const;
+
 
         // Edit
 

src/OpenFOAM/containers/HashTables/StaticHashTable/StaticHashTableIO.C

@@ -57,6 +57,41 @@ Foam::StaticHashTable<T, Key, Hash>::StaticHashTable
 }
 
 
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+template<class T, class Key, class Hash>
+Foam::Ostream&
+Foam::StaticHashTable<T, Key, Hash>::printInfo(Ostream& os) const
+{
+    label used = 0;
+    label maxChain = 0;
+    unsigned avgChain = 0;
+
+    // Find first non-empty entry
+    forAll(keys_, hashIdx)
+    {
+        const label count = keys_[hashIdx].size();
+        if (count)
+        {
+            ++used;
+            avgChain += count;
+
+            if (maxChain < count)
+            {
+                maxChain = count;
+            }
+        }
+    }
+
+    os  << "StaticHashTable<T,Key,Hash>"
+        << " elements:" << size() << " slots:" << used << "/" << keys_.size()
+        << " chaining(avg/max):" << (used ? float(avgChain/used) : 0)
+        << "/" << maxChain << endl;
+
+    return os;
+}
+
+
 // * * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * //
 
 template<class T, class Key, class Hash>

src/OpenFOAM/containers/Lists/FixedList/FixedListI.H

@@ -408,7 +408,8 @@ template<class HashT>
 inline Foam::FixedList<T, Size>::Hash<HashT>::Hash()
 {}
 
-//- Rotating Hash. From http://burtleburtle.net/bob/hash/doobs.html
+
+// Rotating Hash
 template<class T, Foam::label Size>
 template<class HashT>
 inline Foam::label Foam::FixedList<T, Size>::Hash<HashT>::operator()
@@ -422,7 +423,7 @@ inline Foam::label Foam::FixedList<T, Size>::Hash<HashT>::operator()
 
     for (register int i=0; i<Size; i++)
     {
-        val = (val<<4)^(val>>farbit)^HashT()(lst[i]);
+        val = (val << 4) ^ (val >> farbit) ^ HashT()(lst[i]);
     }
 
     return val;
@@ -436,7 +437,7 @@ inline Foam::label Foam::FixedList<T, Size>::Hash<HashT>::operator()
     const label tableSize
 ) const
 {
-    return mag(operator()(lst)) % tableSize;
+    return ::abs(operator()(lst)) % tableSize;
 }
 #endif
 

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

@@ -148,9 +148,11 @@ public:
         //- Masking for all bits below the offset
         inline static unsigned int maskLower(unsigned offset);
 
-    // Forward declaration of iteratorBase
+    // Forward declaration of iterators
 
         class iteratorBase;
+        class iterator;
+        class const_iterator;
 
     // Constructors
 
@@ -355,7 +357,10 @@ public:
             public iteratorBase
         {
 
-            //- Should never violate const-ness!
+            //- Disallow copy constructor from const_iterator - violates const-ness!
+            iterator(const const_iterator&);
+
+            //- Disallow assignment from const_iterator - violates const-ness!
             void operator=(const const_iterator&);
 
         public:

src/OpenFOAM/db/IOobjectList/IOobjectList.H

@@ -63,7 +63,7 @@ public:
     // Constructors
 
         //- Construct given an initial estimate for the number of entries
-        explicit IOobjectList(const label nIoObjects = 100);
+        explicit IOobjectList(const label nIoObjects = 128);
 
         //- Construct from objectRegistry and instance path
         IOobjectList

src/OpenFOAM/db/objectRegistry/objectRegistry.H

@@ -82,12 +82,12 @@ public:
 
     // Constructors
 
-        //- Construct the time objectRegistry given an initial estimate 
+        //- Construct the time objectRegistry given an initial estimate
         //  for the number of entries
         explicit objectRegistry
         (
             const Time& db,
-            const label nIoObjects = 100
+            const label nIoObjects = 128
         );
 
         //- Construct a sub-registry given an IObject to describe the registry
@@ -95,7 +95,7 @@ public:
         explicit objectRegistry
         (
             const IOobject& io,
-            const label nIoObjects = 100
+            const label nIoObjects = 128
         );
 
 

src/OpenFOAM/meshes/meshShapes/edge/EdgeMap.H

@@ -56,7 +56,7 @@ public:
     // Constructors
 
         //- Construct given initial map size
-        EdgeMap(label size = 100)
+        EdgeMap(const label size = 128)
         :
             HashTable<T, edge, Hash<edge> >(size)
         {}

src/OpenFOAM/primitives/strings/string/stringI.H

@@ -133,7 +133,7 @@ inline bool Foam::string::meta(const string& str, const char quote)
 
 
 template<class String>
-inline Foam::string 
+inline Foam::string
 Foam::string::quotemeta(const string& str, const char quote)
 {
     if (!quote)
@@ -205,14 +205,14 @@ inline Foam::string::size_type Foam::string::hash::operator()
     const string& key
 ) const
 {
-    register size_type hashVal = 0;
+    register size_type val = 0;
 
     for (string::const_iterator iter=key.begin(); iter!=key.end(); ++iter)
     {
-        hashVal = hashVal<<1 ^ *iter;
+        val = (val << 1) ^ *iter;
     }
 
-    return hashVal;
+    return val;
 }