1 files changed, 66 insertions, 13 deletions

diff --git a/src/rotatingsymmetry180.c b/src/rotatingsymmetry180.c
index 62b859d..ccafa3c 100644
--- a/src/rotatingsymmetry180.c
+++ b/src/rotatingsymmetry180.c
@@ -1,5 +1,3 @@
-/* $Header$ */
-
 #include <assert.h>
 #include <math.h>
 #include <stdlib.h>
@@ -45,7 +43,6 @@ int BndRot180VI (cGH const * restrict const cctkGH,
   int offset[3];                /* offset 0..1 due to avoid_origin */
   
   struct xferinfo * restrict xferinfo;
-  int options;
   
   int var;
   
@@ -54,6 +51,7 @@ int BndRot180VI (cGH const * restrict const cctkGH,
   int otherdir;                 /* the other direction of the rotation */
   int q;
   int d;
+  int icnt;
   int ierr;
   
   /* Check arguments */
@@ -451,16 +449,71 @@ int BndRot180VI (cGH const * restrict const cctkGH,
     xferinfo[     dir].flip = 1;
     xferinfo[otherdir].flip = 1;
     
-    options = Util_TableCreateFromString ("useghosts=1");
-    assert (options>=0);
-    
-    ierr = Slab_MultiTransfer
-      (cctkGH, group.dim, xferinfo, options,
-       nvars, vartypes, varptrs, vartypes, varptrs);
-    assert (!ierr);
-    
-    ierr = Util_TableDestroy (options);
-    assert (!ierr);
+    if (CCTK_EQUALS (hyperslabber, "TAT/Slab")) {
+      
+      if (CCTK_IsFunctionAliased("GetLocalComponents")) {
+        int const num_local_components = GetLocalComponents(cctkGH);
+        if (num_local_components > 1) {
+          CCTK_WARN (CCTK_WARN_ABORT,
+                     "TAT/Slab can only be used if there is a single local component per MPI process");
+        }
+      }
+      
+      int options;
+      options = Util_TableCreateFromString ("useghosts=1");
+      assert (options>=0);
+      
+      ierr = Slab_MultiTransfer
+        (cctkGH, group.dim, xferinfo, options,
+         nvars, vartypes, varptrs, vartypes, varptrs);
+      assert (!ierr);
+      
+      ierr = Util_TableDestroy (options);
+      assert (!ierr);
+      
+    } else if (CCTK_EQUALS (hyperslabber, "GetHyperslab")) {
+      
+      CCTK_INT const direction[3*3] = {1, 0, 0,   0, 1, 0,   0, 0, 1};
+      CCTK_INT const origin[3] =
+        {xferinfo[0].src.off, xferinfo[1].src.off, xferinfo[2].src.off};
+      CCTK_INT const extent[3] =
+        {xferinfo[0].src.len, xferinfo[1].src.len, xferinfo[2].src.len};
+      CCTK_INT const downsample[3] =
+        {xferinfo[0].src.str, xferinfo[1].src.str, xferinfo[2].src.str};
+      int mapping;
+      CCTK_INT hsize[3], total_hsize;
+      CCTK_POINTER hdata[nvars];
+      
+      assert (nvars > 0);
+      mapping = Hyperslab_GlobalMappingByIndex
+        (cctkGH, vis[0], 3, direction, origin, extent, downsample,
+         -1, NULL, &hsize);
+      assert (mapping>=0);
+      
+      total_hsize = hsize[0] * hsize[1] * hsize[2];
+      assert (total_hsize >= 0);
+      for (var=0; var<nvars; ++var) {
+        hdata[var] = malloc(total_hsize * CCTK_VarTypeSize(CCTK_VarTypeI(var)));
+        assert (total_hsize==0 || hdata[var]);
+      }
+      
+      icnt = Hyperslab_GetList
+        (cctkGH, mapping, nvars, NULL, vis, NULL, NULL, hdata, NULL);
+      assert (icnt == nvars);
+      
+      // copy hyperslabs into grid functions
+      assert (0);
+      
+      for (var=0; var<nvars; ++var) {
+        free (hdata[var]);
+      }
+      
+      ierr = Hyperslab_FreeMapping (mapping);
+      assert (!ierr);
+      
+    } else {
+      CCTK_WARN (CCTK_WARN_ABORT, "internal error");
+    }
     
     if (poison_boundaries) {
       /* check destination grid points for poison */