DemandExecutableAllocator()
: MetaAllocator(jitAllocationGranule)
{
std::lock_guard<StaticLock> lock(allocatorsMutex());
allocators().add(this);
// Don't preallocate any memory here.
}
static size_t bytesCommittedByAllocactors()
{
size_t total = 0;
std::lock_guard<StaticLock> lock(allocatorsMutex());
for (HashSet<DemandExecutableAllocator*>::const_iterator allocator = allocators().begin(); allocator != allocators().end(); ++allocator)
total += (*allocator)->bytesCommitted();
return total;
}
virtual ~DemandExecutableAllocator()
{
{
std::lock_guard<StaticLock> lock(allocatorsMutex());
allocators().remove(this);
}
for (unsigned i = 0; i < reservations.size(); ++i)
reservations.at(i).deallocate();
}
static void dumpProfileFromAllAllocators()
{
std::lock_guard<StaticLock> lock(allocatorsMutex());
for (HashSet<DemandExecutableAllocator*>::const_iterator allocator = allocators().begin(); allocator != allocators().end(); ++allocator)
(*allocator)->dumpProfile();
}
//
// StencilTables factory
//
StencilTables const *
StencilTablesFactory::Create(TopologyRefiner const & refiner,
Options options) {
StencilTables * result = new StencilTables;
int maxlevel = std::min(int(options.maxLevel), refiner.GetMaxLevel());
if (maxlevel==0 and (not options.generateControlVerts)) {
return result;
}
// 'maxsize' reflects the size of the default supporting basis factorized
// in the stencils, with a little bit of head-room. Each subdivision scheme
// has a set valence for 'regular' vertices, which drives the size of the
// supporting basis of control-vertices. The goal is to reduce the number
// of incidences where the pool allocator has to switch to dynamically
// allocated heap memory when encountering extraordinary vertices that
// require a larger supporting basis.
//
// The maxsize settings we use follow the assumption that the vast
// majority of the vertices in a mesh are regular, and that the valence
// of the extraordinary vertices is only higher by 1 edge.
int maxsize = 0;
bool interpolateVarying = false;
switch (options.interpolationMode) {
case INTERPOLATE_VERTEX: {
Sdc::SchemeType type = refiner.GetSchemeType();
switch (type) {
case Sdc::SCHEME_BILINEAR : maxsize = 5; break;
case Sdc::SCHEME_CATMARK : maxsize = 17; break;
case Sdc::SCHEME_LOOP : maxsize = 10; break;
default:
assert(0);
}
} break;
case INTERPOLATE_VARYING: maxsize = 5; interpolateVarying=true; break;
default:
assert(0);
}
std::vector<StencilAllocator> allocators(
options.generateIntermediateLevels ? maxlevel+1 : 2,
StencilAllocator(maxsize, interpolateVarying));
StencilAllocator * srcAlloc = &allocators[0],
* dstAlloc = &allocators[1];
//
// Interpolate stencils for each refinement level using
// TopologyRefiner::InterpolateLevel<>()
//
for (int level=1;level<=maxlevel; ++level) {
dstAlloc->Resize(refiner.GetNumVertices(level));
if (options.interpolationMode==INTERPOLATE_VERTEX) {
refiner.Interpolate(level, *srcAlloc, *dstAlloc);
} else {
refiner.InterpolateVarying(level, *srcAlloc, *dstAlloc);
}
if (options.generateIntermediateLevels) {
if (level<maxlevel) {
if (options.factorizeIntermediateLevels) {
srcAlloc = &allocators[level];
} else {
// if the stencils are dependent on the previous level of
// subdivision, pass an empty allocator to treat all parent
// vertices as control vertices
assert(allocators[0].GetNumStencils()==0);
}
dstAlloc = &allocators[level+1];
}
} else {
std::swap(srcAlloc, dstAlloc);
}
}
// Copy stencils from the pool allocator into the tables
{
// Add total number of stencils, weights & indices
int nelems = 0, nstencils=0;
if (options.generateIntermediateLevels) {
for (int level=0; level<=maxlevel; ++level) {
nstencils += allocators[level].GetNumStencils();
nelems += allocators[level].GetNumVerticesTotal();
}
} else {
nstencils = (int)srcAlloc->GetNumStencils();
nelems = srcAlloc->GetNumVerticesTotal();
}
// Allocate
result->_numControlVertices = refiner.GetNumVertices(0);
if (options.generateControlVerts) {
nstencils += result->_numControlVertices;
nelems += result->_numControlVertices;
}
result->resize(nstencils, nelems);
// Copy stencils
Stencil dst(&result->_sizes.at(0),
&result->_indices.at(0), &result->_weights.at(0));
if (options.generateControlVerts) {
generateControlVertStencils(result->_numControlVertices, dst);
}
if (options.generateIntermediateLevels) {
for (int level=1; level<=maxlevel; ++level) {
for (int i=0; i<allocators[level].GetNumStencils(); ++i) {
*dst._size = allocators[level].CopyStencil(i, dst._indices, dst._weights);
dst.Next();
}
}
} else {
for (int i=0; i<srcAlloc->GetNumStencils(); ++i) {
*dst._size = srcAlloc->CopyStencil(i, dst._indices, dst._weights);
dst.Next();
}
}
if (options.generateOffsets) {
result->generateOffsets();
}
}
return result;
}