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#include <cassert>
#include <sstream>
#include <string>
#include "cctk.h"
#include "cctk_Parameters.h"
#include "gh.hh"
#include "vect.hh"
#include "carpet.hh"
#include "regrid.hh"
namespace CarpetRegrid {
using namespace std;
using namespace Carpet;
CCTK_INT CarpetRegrid_Regrid (CCTK_POINTER_TO_CONST const cctkGH_,
CCTK_POINTER const superregss_,
CCTK_POINTER const regsss_,
CCTK_INT force)
{
DECLARE_CCTK_PARAMETERS;
const cGH * const cctkGH = (const cGH *) cctkGH_;
gh::rregs & superregss = * (gh::rregs *) superregss_;
gh::mregs & regsss = * (gh::mregs *) regsss_;
gh const & hh = *vhh.at(Carpet::map);
assert (is_singlemap_mode());
// In force mode (force == true) we do not check the CarpetRegrid
// parameters
if (!force) {
assert (regrid_every == -1 or regrid_every == 0
or regrid_every % maxmglevelfact == 0);
// Return if no regridding is desired
if (regrid_every == -1) return 0;
// Return if we want to regrid during initial data only, and this
// is not the time for initial data
if (regrid_every == 0 and cctkGH->cctk_iteration != 0) return 0;
// Return if we want to regrid regularly, but not at this time
if ((regrid_every > 0 and
cctkGH->cctk_iteration != 0 and
(cctkGH->cctk_iteration-1) % regrid_every != 0)
or
((cctkGH->cctk_iteration-1) == 0 and
regrid_every > 1))
{
return 0;
}
// Steer parameters
const int oldnumlevels = refinement_levels;
if (CCTK_EQUALS(activate_levels_on_regrid, "none")) {
// do nothing
} else if (CCTK_EQUALS(activate_levels_on_regrid, "fixed")) {
if (cctkGH->cctk_iteration-1 >= activate_next) {
const int newnumlevels
= min((int)(refinement_levels + num_new_levels), maxreflevels);
assert (newnumlevels>0 and newnumlevels<=maxreflevels);
*const_cast<CCTK_INT*>(&activate_next) = cctkGH->cctk_iteration;
ostringstream next;
next << activate_next;
CCTK_ParameterSet
("activate_next", "CarpetRegrid", next.str().c_str());
*const_cast<CCTK_INT*>(&refinement_levels) = newnumlevels;
ostringstream param;
param << refinement_levels;
CCTK_ParameterSet
("refinement_levels", "CarpetRegrid", param.str().c_str());
if (verbose) {
ostringstream buf1, buf2;
buf1 << "Activating " << newnumlevels - oldnumlevels << " new refinement levels";
buf2 << "There are now " << newnumlevels << " refinement levels";
CCTK_INFO (buf1.str().c_str());
CCTK_INFO (buf2.str().c_str());
}
}
} else if (CCTK_EQUALS(activate_levels_on_regrid, "function")) {
if (! CCTK_IsFunctionAliased("RegridLevel")) {
CCTK_WARN (0, "No thorn has provided the function \"RegridLevel\"");
}
const int newnumlevels
= RegridLevel (cctkGH, refinement_levels, maxreflevels);
if (newnumlevels>0 and newnumlevels<=maxreflevels) {
*const_cast<CCTK_INT*>(&refinement_levels) = newnumlevels;
ostringstream param;
param << refinement_levels;
CCTK_ParameterSet
("refinement_levels", "CarpetRegrid", param.str().c_str());
if (verbose) {
ostringstream buf1, buf2;
buf1 << "Activating " << newnumlevels - oldnumlevels << " new refinement levels";
buf2 << "There are now " << newnumlevels << " refinement levels";
CCTK_INFO (buf1.str().c_str());
CCTK_INFO (buf2.str().c_str());
}
} else {
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"The aliased function \"RegridLevel\" returned an illegal number of refinement levels (%d). No levels will be activated or deactivated.", newnumlevels);
}
} else {
assert (0);
}
// Return if this is not during initial data generation, and if no
// change in the grid structure is desired
if (cctkGH->cctk_iteration != 0) {
if (keep_same_grid_structure and refinement_levels == reflevels && !tracking) {
return 0;
}
}
} else {
// If force is active, steer activate_next to current iteration
ostringstream next;
next << cctkGH->cctk_iteration;
CCTK_ParameterSet
("activate_next", "CarpetRegrid", next.str().c_str());
} // if (!force)
int do_recompose;
if (CCTK_EQUALS(refined_regions, "none")) {
do_recompose = BaseLevel (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "centre")) {
do_recompose = Centre (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "manual-gridpoints")) {
do_recompose
= ManualGridpoints (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "manual-coordinates")) {
do_recompose
= ManualCoordinates (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "manual-gridpoint-list")) {
do_recompose
= ManualGridpointList (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "manual-coordinate-list")) {
do_recompose
= ManualCoordinateList (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "moving")) {
do_recompose = Moving (cctkGH, hh, superregss);
} else if (CCTK_EQUALS(refined_regions, "automatic")) {
do_recompose = Automatic (cctkGH, hh, superregss);
} else {
assert (0);
}
// make multiprocessor aware
vector<vector<region_t> > regss(superregss.size());
for (size_t rl=0; rl<superregss.size(); ++rl) {
#warning "TODO: delete .processors"
SplitRegions (cctkGH, superregss.at(rl), regss.at(rl));
}
// make multigrid aware
MakeMultigridBoxes (cctkGH, Carpet::map, regss, regsss);
assert (regsss.size() > 0);
return do_recompose;
}
} // namespace CarpetRegrid
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