functionObjectList with SHA1Digest tracking

applications/utilities/postProcessing/miscellaneous/execFlowFunctionObjects/execFlowFunctionObjects.C

@@ -74,7 +74,7 @@ namespace Foam
         }
         else
         {
-            functionObjectList fol(runTime, runTime.controlDict());
+            functionObjectList fol(runTime);
             fol.start();
             fol.execute();
         }

src/OpenFOAM/db/functionObject/functionObject.C

@@ -71,10 +71,10 @@ Foam::autoPtr<Foam::functionObject> Foam::functionObject::New
         FatalErrorIn
         (
             "functionObject::New"
-            "(const word& functionType, const Time&, const dictionary&)"
+            "(const word& name, const Time&, const dictionary&)"
         )   << "Unknown function type "
-            << functionType << endl << endl
-            << "Table of functionObjects is empty"
+            << functionType << nl << nl
+            << "Table of functionObjects is empty" << endl
             << exit(FatalError);
     }
 
@@ -86,11 +86,11 @@ Foam::autoPtr<Foam::functionObject> Foam::functionObject::New
         FatalErrorIn
         (
             "functionObject::New"
-            "(const word& functionType, const Time&, const dictionary&)"
+            "(const word& name, const Time&, const dictionary&)"
         )   << "Unknown function type "
-            << functionType << endl << endl
-            << "Valid functions are : " << endl
-            << dictionaryConstructorTablePtr_->toc()
+            << functionType << nl << nl
+            << "Valid functions are : " << nl
+            << dictionaryConstructorTablePtr_->toc() << endl
             << exit(FatalError);
     }
 

src/OpenFOAM/db/functionObject/functionObject.H

@@ -121,7 +121,7 @@ public:
 
     // Selectors
 
-        //- Select from Time and Istream
+        //- Select from dictionary, based on its "type" entry
         static autoPtr<functionObject> New
         (
             const word& name,
@@ -143,7 +143,7 @@ public:
         //- execute is called at each ++ or += of the time-loop
         virtual bool execute() = 0;
 
-        //- Read and set the function object if its data has changed
+        //- Read and set the function object if its data have changed
         virtual bool read(const dictionary& dict) = 0;
 };
 

src/OpenFOAM/db/functionObjectList/functionObjectList.C

@@ -29,7 +29,8 @@ License
 
 // * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //
 
-Foam::functionObject* Foam::functionObjectList::remove(const word& key)
+Foam::functionObject*
+Foam::functionObjectList::remove(const word& key, label& oldIndex)
 {
     functionObject* ptr = 0;
 
@@ -38,10 +39,16 @@ Foam::functionObject* Foam::functionObjectList::remove(const word& key)
 
     if (fnd != indices_.end())
     {
-        // remove the pointer from the old list
-        ptr = functions_.set(fnd(), 0).ptr();
+        oldIndex = fnd();
+
+        // retrieve the pointer and remove it from the old list
+        ptr = this->set(oldIndex, 0).ptr();
         indices_.erase(fnd);
     }
+    else
+    {
+        oldIndex = -1;
+    }
 
     return ptr;
 }
@@ -55,7 +62,8 @@ Foam::functionObjectList::functionObjectList
     const bool execution
 )
 :
-    functions_(),
+    PtrList<functionObject>(),
+    digests_(),
     indices_(),
     time_(t),
     parentDict_(t.controlDict()),
@@ -71,7 +79,8 @@ Foam::functionObjectList::functionObjectList
     const bool execution
 )
 :
-    functions_(),
+    PtrList<functionObject>(),
+    digests_(),
     indices_(),
     time_(t),
     parentDict_(parentDict),
@@ -105,7 +114,7 @@ bool Foam::functionObjectList::execute()
             read();
         }
 
-        forAllIter(PtrList<functionObject>, functions_, iter)
+        forAllIter(PtrList<functionObject>, *this, iter)
         {
             ok = iter().execute() && ok;
         }
@@ -123,7 +132,8 @@ void Foam::functionObjectList::on()
 
 void Foam::functionObjectList::off()
 {
-    execution_ = false;
+    // for safety, also force a read() when execution is turned back on
+    updated_ = execution_ = false;
 }
 
 
@@ -143,15 +153,19 @@ bool Foam::functionObjectList::read()
     if (entryPtr)
     {
         PtrList<functionObject> newPtrs;
+        List<SHA1Digest> newDigs;
         HashTable<label> newIndices;
 
         label nFunc = 0;
+        label oldIndex = -1;
 
         if (entryPtr->isDict())
         {
             // a dictionary of functionObjects
             const dictionary& functionDicts = entryPtr->dict();
+
             newPtrs.setSize(functionDicts.size());
+            newDigs.setSize(functionDicts.size());
 
             forAllConstIter(dictionary, functionDicts, iter)
             {
@@ -163,11 +177,16 @@ bool Foam::functionObjectList::read()
                 const word& key = iter().keyword();
                 const dictionary& dict = iter().dict();
 
-                functionObject* objPtr = remove(key);
+                newDigs[nFunc] = dict.digest();
+
+                functionObject* objPtr = remove(key, oldIndex);
                 if (objPtr)
                 {
-                    // existing functionObject
-                    ok = objPtr->read(dict) && ok;
+                    // an existing functionObject, and dictionary changed
+                    if (newDigs[nFunc] != digests_[oldIndex])
+                    {
+                        ok = objPtr->read(dict) && ok;
+                    }
                 }
                 else
                 {
@@ -185,7 +204,9 @@ bool Foam::functionObjectList::read()
         {
             // a list of functionObjects
             PtrList<entry> functionDicts(entryPtr->stream());
+
             newPtrs.setSize(functionDicts.size());
+            newDigs.setSize(functionDicts.size());
 
             forAllIter(PtrList<entry>, functionDicts, iter)
             {
@@ -197,11 +218,16 @@ bool Foam::functionObjectList::read()
                 const word& key = iter().keyword();
                 const dictionary& dict = iter().dict();
 
-                functionObject* objPtr = remove(key);
+                newDigs[nFunc] = dict.digest();
+
+                functionObject* objPtr = remove(key, oldIndex);
                 if (objPtr)
                 {
-                    // existing functionObject
-                    ok = objPtr->read(dict) && ok;
+                    // an existing functionObject, and dictionary changed
+                    if (newDigs[nFunc] != digests_[oldIndex])
+                    {
+                        ok = objPtr->read(dict) && ok;
+                    }
                 }
                 else
                 {
@@ -218,15 +244,18 @@ bool Foam::functionObjectList::read()
 
         // safety:
         newPtrs.setSize(nFunc);
+        newDigs.setSize(nFunc);
 
-        // update PtrList of functionObjects
-        // also deletes existing, unused functionObjects
-        functions_.transfer(newPtrs);
+        // updating the PtrList of functionObjects also deletes any existing,
+        // but unused functionObjects
+        this->transfer(newPtrs);
+        digests_.transfer(newDigs);
         indices_.transfer(newIndices);
     }
     else
     {
-        functions_.clear();
+        this->clear();
+        digests_.clear();
         indices_.clear();
     }
 

src/OpenFOAM/db/functionObjectList/functionObjectList.H

@@ -43,6 +43,7 @@ SourceFiles
 #include "functionObject.H"
 #include "HashTable.H"
 #include "PtrList.H"
+#include "SHA1Digest.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -54,20 +55,20 @@ namespace Foam
 \*---------------------------------------------------------------------------*/
 
 class functionObjectList
+:
+    private PtrList<functionObject>
 {
     // Private data
 
-        //- A list of function objects
-        //  Avoid 'is-a' relationship for protection
-        PtrList<functionObject> functions_;
+        //- A list of SHA1 digests for the function object dictionaries
+        List<SHA1Digest> digests_;
 
-        //- Quick lookup of the index into the PtrList<functionObject>
-        //  Currently only used to manage rereading/deletion
-        HashTable<label>  indices_;
+        //- Quick lookup of the index into functions/digests
+        HashTable<label> indices_;
 
         const Time& time_;
 
-        //- Dictionary containing the "functions" entry
+        //- The parent dictionary containing a "functions" entry
         //  This entry can either be a list or a dictionary of
         //  functionObject specifications.
         const dictionary& parentDict_;
@@ -75,15 +76,16 @@ class functionObjectList
         //- Switch for the execution of the functionObjects
         bool execution_;
 
-        //- Tracks if read() was called while execution was turned off
+        //- Tracks if read() was called while execution is on
         bool updated_;
 
 
     // Private Member Functions
 
-        //- Remove and return the function object pointer by name.
-        //  Return NULL if it didn't exist.
-        functionObject* remove(const word&);
+        //- Remove and return the function object pointer by name,
+        //  and returns the old index via the parameter.
+        //  Returns a NULL pointer (and index -1) if it didn't exist.
+        functionObject* remove(const word&, label& oldIndex);
 
         //- Disallow default bitwise copy construct
         functionObjectList(const functionObjectList&);
@@ -105,8 +107,11 @@ public:
         );
 
 
-        //- Construct from Time, dictionary with "functions" entry
-        //  and the execution setting
+        //- Construct from Time, a dictionary with "functions" entry
+        //  and the execution setting.
+        //  @param[in]  parentDict - the parent dictionary containing
+        //    a "functions" entry, which can either be a list or a dictionary
+        //    of functionObject specifications.
         functionObjectList
         (
             const Time&,