MultiFab::deepCopy()

Src/Base/AMReX_MultiFab.H

@@ -486,6 +486,14 @@ public:
                      int             dstcomp,
                      int             numcomp,
                      const IntVect&  nghost);
+
+    /** Create a deep copy of this MultiFab and its data.
+     *
+     * This uses the same arena and factory in the copy and copies
+     * all data.
+     */
+    MultiFab deepCopy ();
+
     /**
     * \brief Copy from src to dst including nghost ghost cells.
     * The two MultiFabs MUST have the same underlying BoxArray.

Src/Base/AMReX_MultiFab.cpp

@@ -167,6 +167,28 @@ MultiFab::Add (MultiFab& dst, const MultiFab& src,
     amrex::Add(dst, src, srccomp, dstcomp, numcomp, nghost);
 }
 
+MultiFab
+MultiFab::deepCopy ()
+{
+    auto mf = MultiFab(
+        this->boxArray(),
+        this->DistributionMap(),
+        this->nComp(),
+        this->nGrowVect(),
+        MFInfo().SetArena(this->arena()),
+        this->Factory()
+    );
+    MultiFab::Copy(
+        mf,
+        *this,
+        0,
+        0,
+        this->nComp(),
+        this->nGrowVect()
+    );
+    return mf;
+}
+
 void
 MultiFab::Copy (MultiFab& dst, const MultiFab& src,
                 int srccomp, int dstcomp, int numcomp, int nghost)