[pooma-dev] small bugs

[Richard Guenther]

On Mon, 24 May 2004, ron hylton wrote:

> Here are some small bugs that perhaps should be fixed in CVS.
>
> in Array.h
>
> Array::physicalDomain() should return an object rather than a reference
> because view engines return a temporary layout and the current behavior is
> sometimes returning a reference to the interior of a temporary. Fix:
>
>   inline const Domain_t physicalDomain() const

Indeed.

> in IndexFunctionEngine.h
>
> Engine::setDomain() should set firsts_m to be consistent with the
> constructors. Fix:
>
>   void setDomain(const Domain_t &dom)
>   {
> 	domain_m = dom;
>     for (int d = 0; d < Dim; ++d)
>       firsts_m[d] = domain_m[d].first();
>   }

Hm, I think we should rather drop the firsts_m member and change
first(int i) to return domain_m[i].first() instead.  firsts_m isn't used
otherwise.

> I think IndexFunctionEngine also should have an Engine::layout() member to
> be consistent with other Engines.  The simplest possibility is:
>
>   inline Layout_t layout() const { return Layout_t(domain_m); }

Yes.

> in ForwardingEngine.h
>
> in struct NewEngine
>   typedef Engine<Dim, T, CompFwd<NewEngine_t, Components> > Type_t;
> should be
>   typedef Engine<NewEngine_t::dimensions, T, CompFwd<NewEngine_t,
> Components> > Type_t;

Yes.

Compiled ok, not tested (but all those look obvious).  Ok?

Richard.


2004May25  Richard Guenther <richard.guenther at uni-tuebingen.de>

	From Ron Hylton <ron_hylton at hotmail.com>

	* src/Array/Array.h: don't possibly return reference to
	temporary in physicalDomain().
	src/Engine/IndexFunctionEngine.h: remove firsts_m member,
	add layout() accessor.
	src/Engine/ForwardingEngine.h: use NewEngine_t::dimensions
	for Type_t in NewEngine traits.


Index: Array/Array.h
===================================================================
RCS file: /home/pooma/Repository/r2/src/Array/Array.h,v
retrieving revision 1.150
diff -u -u -r1.150 Array.h
--- Array/Array.h	2 Mar 2004 18:18:45 -0000	1.150
+++ Array/Array.h	25 May 2004 09:35:50 -0000
@@ -1796,7 +1796,7 @@

   /// Returns the physical domain, i.e. the domain without external guards.

-  inline const Domain_t& physicalDomain() const
+  inline Domain_t physicalDomain() const
     {
       return engine_m.layout().innerDomain();
     }
Index: Engine/IndexFunctionEngine.h
===================================================================
RCS file: /home/pooma/Repository/r2/src/Engine/IndexFunctionEngine.h,v
retrieving revision 1.26
diff -u -u -r1.26 IndexFunctionEngine.h
--- Engine/IndexFunctionEngine.h	22 Oct 2003 19:38:07 -0000	1.26
+++ Engine/IndexFunctionEngine.h	25 May 2004 09:35:51 -0000
@@ -124,16 +124,12 @@
   explicit Engine(const Domain_t &domain, const Functor &f = Functor())
   : funct_m(f), domain_m(domain)
   {
-    for (int d = 0; d < Dim; ++d)
-      firsts_m[d] = domain[d].first();
   }

   template<class Layout>
   explicit Engine(const Layout &layout, const Functor &f = Functor())
   : funct_m(f), domain_m(layout.domain())
   {
-    for (int d = 0; d < Dim; ++d)
-      firsts_m[d] = domain_m[d].first();
   }

   //---------------------------------------------------------------------------
@@ -142,8 +138,6 @@
   Engine(const This_t &model)
   : funct_m(model.functor()), domain_m(model.domain())
   {
-    for (int d = 0; d < Dim; ++d)
-      firsts_m[d] = model.firsts_m[d];
   }

   //---------------------------------------------------------------------------
@@ -153,8 +147,6 @@
   {
     domain_m = rhs.domain();
     funct_m = rhs.functor();
-    for (int d = 0; d < Dim; ++d)
-      firsts_m[d] = rhs.firsts_m[d];

     return *this;
   }
@@ -240,7 +232,15 @@
   inline int first(int i) const
   {
     PAssert(i >= 0 && i < Dim);
-    return firsts_m[i];
+    return domain_m[i].first();
+  }
+
+  //---------------------------------------------------------------------------
+  /// Returns the layout, which is constructed as a DomainLayout.
+
+  Layout_t layout() const
+  {
+    return Layout_t(domain_m);
   }

   //---------------------------------------------------------------------------
@@ -253,7 +253,6 @@

   Functor funct_m;
   Domain_t domain_m;
-  int firsts_m[Dim];
 };


Index: Engine/ForwardingEngine.h
===================================================================
RCS file: /home/pooma/Repository/r2/src/Engine/ForwardingEngine.h,v
retrieving revision 1.48
diff -u -u -r1.48 ForwardingEngine.h
--- Engine/ForwardingEngine.h	22 Oct 2003 19:38:07 -0000	1.48
+++ Engine/ForwardingEngine.h	25 May 2004 09:35:51 -0000
@@ -317,7 +317,7 @@
 struct NewEngine<Engine<Dim, T, CompFwd<Eng, Components> >, Domain>
 {
   typedef typename NewEngine<Eng, Domain>::Type_t NewEngine_t;
-  typedef Engine<Dim, T, CompFwd<NewEngine_t, Components> > Type_t;
+  typedef Engine<NewEngine_t::dimensions, T, CompFwd<NewEngine_t, Components> > Type_t;
 };

 /**