From ce3d4f6c28b7a9f4ff1596bcb998815dc685e0d6 Mon Sep 17 00:00:00 2001
From: diener <diener@2a26948c-0e4f-0410-aee8-f1d3e353619c>
Date: Tue, 22 Jun 2004 13:21:13 +0000
Subject: Routines to make re-initialization work with carpet.

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/EHFinder/trunk@174 2a26948c-0e4f-0410-aee8-f1d3e353619c
---
 src/EHFinder_CarpetSupport.cc | 121 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/EHFinder_CarpetSupport.cc

diff --git a/src/EHFinder_CarpetSupport.cc b/src/EHFinder_CarpetSupport.cc
new file mode 100644
index 0000000..f0a9dc1
--- /dev/null
+++ b/src/EHFinder_CarpetSupport.cc
@@ -0,0 +1,121 @@
+#include <cstdio>
+#include <cmath>
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+#ifdef HAVE_CARPET
+#include "carpet.hh"
+#endif
+
+namespace EHFinder {
+
+#ifdef HAVE_CARPET
+  using namespace Carpet;
+
+    void loop_over_levels (CCTK_ARGUMENTS, CCTK_INT current_level)
+    {
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_PARAMETERS
+
+      CCTK_INT ierr;
+      int i,j,k,l,index;
+
+      // Do the work.
+      enter_level_mode ( cctkGH, current_level );
+
+        ierr = CallScheduleGroup ( cctkGH, "Euler_ReInitializeEvolve" );
+      leave_level_mode ( cctkGH );
+
+      // Only count iterations on the finest level.
+      if ( current_level == reflevels-1 ) {
+        (*niter_reinit)++;
+      }
+
+
+      // If necessary go to the next level.
+      if ( current_level < reflevels-1) {
+        loop_over_levels (CCTK_PASS_CTOC,current_level+1);
+      }  
+
+      // If we are not on the coarsest level, it's time to take the next step.
+      if ( current_level > 0 ) {
+
+        enter_level_mode ( cctkGH, current_level );
+          ierr = CallScheduleGroup ( cctkGH, "Euler_ReInitializeEvolve" );
+          Restrict ( cctkGH );
+        leave_level_mode ( cctkGH );
+
+        // Again only count iterations on the finest level.
+        if ( current_level == reflevels-1 ) {
+          (*niter_reinit)++;
+        }
+
+        // If necessary go to the next level.
+        if ( current_level < reflevels-1 ) {
+          loop_over_levels (CCTK_PASS_CTOC,current_level+1);
+        }
+
+        // It's time to exit.
+        return;
+      }
+  
+    }
+#endif
+
+  extern "C"
+    void EHFinder_PreReInitialize_Carpet(CCTK_ARGUMENTS)
+    {
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_INT ierr, my_level;
+
+#ifdef HAVE_CARPET
+      my_level = reflevel;
+      leave_level_mode ( cctkGH ); 
+
+      // If we are called on the finest level call the EHFinder_PreReInitialize
+      // schedule group otherwise make sure that no re-initialization routines
+      // are executed.
+
+      if ( my_level == reflevels - 1 ) {
+        ierr = CallScheduleGroup ( cctkGH, "EHFinder_PreReInitialize" );
+      } else {
+        *re_init_control = 0;
+      }
+      enter_level_mode ( cctkGH, my_level );
+#endif
+    }
+
+  extern "C"
+    void EHFinder_ReInitialize_Wrapper(CCTK_ARGUMENTS)
+    {
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_INT current_level = 0;
+      CCTK_INT ierr, my_level;
+
+#ifdef HAVE_CARPET
+      // Get the current level.
+      my_level = reflevel;
+
+      // Leave level mode.
+      leave_level_mode ( cctkGH ); 
+
+      // If we were called on the finest level then loop recursively over all
+      // levels.
+      if ( my_level == reflevels - 1 ) {
+
+        loop_over_levels (CCTK_PASS_CTOC,current_level);
+
+        // Check if the re-initialization is completed.
+        ierr = CallScheduleGroup ( cctkGH, "Euler_PostStep" );
+      }
+
+      // Go back to level mode.
+      enter_level_mode ( cctkGH, my_level );
+
+#endif
+    }
+} // namespace EHFinder
-- 
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