//------------------------------------------------------------------------------
bool isDominated(const BasicBlock *block, const BlockVector &blocks,
const DominatorTree *dt) {
return std::any_of(blocks.begin(), blocks.end(),
[block, dt](BasicBlock *iter) {
return block != iter && dt->dominates(iter, block);
});
}
void DataFlowPass::initStates(const BlockVector& blocks, BlockStates& states) {
for (BlockVector::const_iterator FI = blocks.begin(), FE = blocks.end();
FI != FE; ++FI) {
const BasicBlock& block = **FI;
BlockState state;
initState(block, state);
states.insert(BlockStatePair(&block, state));
}
}
void subprod(const SiconosMatrix& A, const BlockVector& x, SiconosVector& y, const Index& coord, bool init)
{
assert(!(A.isPLUFactorized()) && "A is PLUFactorized in prod !!");
// Number of the subvector of x that handles element at position coord[4]
std::size_t firstBlockNum = x.getNumVectorAtPos(coord[4]);
// Number of the subvector of x that handles element at position coord[5]
unsigned int lastBlockNum = x.getNumVectorAtPos(coord[5]);
Index subCoord = coord;
SPC::SiconosVector tmp = x[firstBlockNum];
std::size_t subSize = tmp->size(); // Size of the sub-vector
const SP::Index xTab = x.tabIndex();
if (firstBlockNum != 0)
{
subCoord[4] -= (*xTab)[firstBlockNum - 1];
subCoord[5] = std::min(coord[5] - (*xTab)[firstBlockNum - 1], subSize);
}
else
subCoord[5] = std::min(coord[5], subSize);
if (firstBlockNum == lastBlockNum)
{
subprod(A, *tmp, y, subCoord, init);
}
else
{
unsigned int xPos = 0 ; // Position in x of the current sub-vector of x
bool firstLoop = true;
subCoord[3] = coord[2] + subCoord[5] - subCoord[4];
for (VectorOfVectors::const_iterator it = x.begin(); it != x.end(); ++it)
{
if ((*it)->getNum() == 0)
SiconosMatrixException::selfThrow("subprod(A,x,y) error: not yet implemented for x block of blocks ...");
if (xPos >= firstBlockNum && xPos <= lastBlockNum)
{
tmp = x[xPos];
if (firstLoop)
{
subprod(A, *tmp, y, subCoord, init);
firstLoop = false;
}
else
{
subCoord[2] += subCoord[5] - subCoord[4]; // !! old values for 4 and 5
subSize = tmp->size();
subCoord[4] = 0;
subCoord[5] = std::min(coord[5] - (*xTab)[xPos - 1], subSize);
subCoord[3] = subCoord[2] + subCoord[5] - subCoord[4];
subprod(A, *tmp, y, subCoord, false);
}
}
xPos++;
}
}
}
void prod(const SiconosVector& x, const SiconosMatrix& A, BlockVector& y, bool init)
{
assert(!(A.isPLUFactorized()) && "A is PLUFactorized in prod !!");
unsigned int startRow = 0;
VectorOfVectors::const_iterator it;
// For Each subvector of y, y[i], private_prod computes y[i] = subA x, subA being a submatrix of A corresponding to y[i] position.
// private_prod takes into account the fact that x and y[i] may be block vectors.
for (it = y.begin(); it != y.end(); ++it)
{
private_prod(createSPtrConstSiconosVector(x), createSPtrConstSiconosMatrix(A), startRow, *it, init);
startRow += (*it)->size();
}
}
void private_addprod(const SiconosMatrix& A, unsigned int startRow, unsigned int startCol, const BlockVector& x, SiconosVector& y)
{
assert(!(A.isPLUFactorized()) && "A is PLUFactorized in prod !!");
assert(!A.isBlock() && "private_addprod(A,start,x,y) error: not yet implemented for block matrix.");
VectorOfVectors::const_iterator it;
unsigned int startColBis = startCol;
for (it = x.begin(); it != x.end(); ++it)
{
private_addprod(A, startRow, startColBis, **it, y);
startColBis += (*it)->size();
}
}
//
// Helper function for printing out dominator information.
//
void LicmPass::showDominators(const BlockVector& blocks,
BlockStates& states, BasicBlock* preheader) {
for (BlockVector::const_iterator I = blocks.begin(), IE = blocks.end();
I != IE; ++I) {
BasicBlock* block = *I;
BasicBlock* idom = dominance.getIdom(states, block);
cerr << block->getName().data() << " idom ";
if (idom) {
cerr << idom->getName().data();
} else {
cerr << preheader->getName().data();
}
cerr << endl;
}
cerr << endl;
}
void prod(const SiconosMatrix& A, const BlockVector& x, SiconosVector& y, bool init)
{
assert(!(A.isPLUFactorized()) && "A is PLUFactorized in prod !!");
if (init)
y.zero();
unsigned int startRow = 0;
unsigned int startCol = 0;
// In private_addprod, the sum of all blocks of x, x[i], is computed: y = Sum_i (subA x[i]), with subA a submatrix of A,
// starting from position startRow in rows and startCol in columns.
// private_prod takes also into account the fact that each block of x can also be a block.
VectorOfVectors::const_iterator it;
for (it = x.begin(); it != x.end(); ++it)
{
private_addprod(A, startRow, startCol, **it, y);
startCol += (*it)->size();
}
}
// Copy from BlockVector
SiconosVector::SiconosVector(const BlockVector & vIn) : std11::enable_shared_from_this<SiconosVector>()
{
if (ask<IsDense>(**(vIn.begin()))) // dense
{
_dense = true;
vect.Dense = new DenseVect(vIn.size());
}
else
{
_dense = false;
vect.Sparse = new SparseVect(vIn.size());
}
VectorOfVectors::const_iterator it;
unsigned int pos = 0;
for (it = vIn.begin(); it != vIn.end(); ++it)
{
setBlock(pos, **it);
pos += (*it)->size();
}
}
void SFUtils::DoTopologicalSort( SLSF::Subsystem subsystem ) {
int vertexIndex = 0;
VertexIndexBlockMap vertexIndexBlockMap;
BlockVertexIndexMap blockVertexIndexMap;
BlockVector blockVector = subsystem.Block_kind_children();
for( BlockVector::iterator blvItr = blockVector.begin(); blvItr != blockVector.end(); ++blvItr, ++vertexIndex ) {
SLSF::Block block = *blvItr;
vertexIndexBlockMap[ vertexIndex ] = block;
blockVertexIndexMap[ block ] = vertexIndex;
std::string blockType = block.BlockType();
if ( blockType == "UnitDelay" ) { // check on other delay blocks as well ...
++vertexIndex; // UnitDelay is vertexed twice - one for outputs (timestep n-1), and one for inputs: vertexIndex is as destination, vertexIndex + 1 is as source
}
}
Graph graph( vertexIndex );
LineSet lineSet = subsystem.Line_kind_children();
for( LineSet::iterator lnsItr = lineSet.begin(); lnsItr != lineSet.end() ; ++lnsItr ) {
SLSF::Line line = *lnsItr;
SLSF::Port sourcePort = line.srcLine_end();
SLSF::Port destinationPort = line.dstLine_end();
SLSF::Block sourceBlock = sourcePort.Block_parent();
SLSF::Block destinationBlock = destinationPort.Block_parent();
if ( sourceBlock == subsystem || destinationBlock == subsystem ) continue;
int sourceBlockVertexIndex = blockVertexIndexMap[ sourceBlock ];
if ( static_cast< std::string >( sourceBlock.BlockType() ) == "UnitDelay" ) {
++sourceBlockVertexIndex;
}
int destinationBlockVertexIndex = blockVertexIndexMap[ destinationBlock ];
boost::add_edge( sourceBlockVertexIndex, destinationBlockVertexIndex, graph );
}
LoopDetector loopDetector( graph );
if ( loopDetector.check() ) {
// TODO: add support for loops involving integrator and other stateful blocks
// Determine what Blocks caused the loop
typedef std::map< Vertex, int > VertexStrongComponentIndexMap;
VertexStrongComponentIndexMap vertexStrongComponentIndexMap;
boost::associative_property_map< VertexStrongComponentIndexMap > apmVertexStrongComponentIndexMap( vertexStrongComponentIndexMap );
strong_components( graph, apmVertexStrongComponentIndexMap );
typedef std::vector< Vertex > VertexVector;
typedef std::map< int, VertexVector > StrongComponentIndexVertexGroupMap;
StrongComponentIndexVertexGroupMap strongComponentIndexVertexGroupMap;
for( VertexStrongComponentIndexMap::iterator vsmItr = vertexStrongComponentIndexMap.begin(); vsmItr != vertexStrongComponentIndexMap.end(); ++vsmItr ) {
strongComponentIndexVertexGroupMap[ vsmItr->second ].push_back( vsmItr->first );
}
std::string error( "Dataflow Graph '" + static_cast< std::string >( subsystem.Name() ) + "' has unhandled loops: " );
for( StrongComponentIndexVertexGroupMap::iterator svmItr = strongComponentIndexVertexGroupMap.begin(); svmItr != strongComponentIndexVertexGroupMap.end(); ++svmItr ) {
VertexVector vertexVector = svmItr->second;
if ( vertexVector.size() <= 1 ) continue;
error.append( "\n" );
for( VertexVector::iterator vtvItr = vertexVector.begin(); vtvItr != vertexVector.end(); ++vtvItr ) {
error.append( blockVector[ *vtvItr ].getPath("/") );
error.append( ", " );
}
error.erase( error.size() - 2 );
}
throw udm_exception(error);
}
typedef std::set< Vertex > VertexSet;
typedef std::map< int, VertexSet > PriorityVertexSetMap;
PriorityVertexSetMap priorityVertexSetMap;
for( BlockVector::iterator blvItr = blockVector.begin() ; blvItr != blockVector.end() ; ++blvItr ) {
SLSF::Block block = *blvItr;
int priority = block.Priority();
if ( priority == 0 ) continue;
Vertex vertex = blockVertexIndexMap[ block ];
priorityVertexSetMap[ priority ].insert( vertex );
}
if ( priorityVertexSetMap.size() > 1 ) {
PriorityVertexSetMap::iterator lstPvmItr = priorityVertexSetMap.end();
--lstPvmItr;
for( PriorityVertexSetMap::iterator pvmItr = priorityVertexSetMap.begin() ; pvmItr != lstPvmItr ; ) {
PriorityVertexSetMap::iterator nxtPvmItr = pvmItr;
++nxtPvmItr;
VertexSet &higherPriorityVertexSet = pvmItr->second;
VertexSet &lowerPriorityVertexSet = nxtPvmItr->second;
for( VertexSet::iterator hvsItr = higherPriorityVertexSet.begin() ; hvsItr != higherPriorityVertexSet.end() ; ++hvsItr ) {
for( VertexSet::iterator lvsItr = lowerPriorityVertexSet.begin() ; lvsItr != lowerPriorityVertexSet.end() ; ++lvsItr ) {
boost::add_edge( *hvsItr, *lvsItr, graph );
LoopDetector loopDetector( graph );
if ( loopDetector.check( *hvsItr ) ) {
SLSF::Block higherPriorityBlock = vertexIndexBlockMap[ *hvsItr ];
SLSF::Block lowerPriorityBlock = vertexIndexBlockMap[ *lvsItr ];
std::cerr << "WARNING: Cannot implement priority difference between block \"" << higherPriorityBlock.getPath( "/" ) << "\" (Priority = " << *hvsItr << ") and " << std::endl;
std::cerr << " block \"" << lowerPriorityBlock.getPath( "/" ) << "\" (Priority = " << *lvsItr << "): contradicts topology of subsystem or other implemented block priority order." << std::endl;
boost::remove_edge( *hvsItr, *lvsItr, graph );
}
}
}
pvmItr = nxtPvmItr;
}
}
VertexList vertexList;
boost::topological_sort( graph, std::back_inserter( vertexList ) );
/* PUT ALL "DataStoreMemory" BLOCKS AT END OF "C" SO THEY HAVE HIGHEST PRIORITY */
VertexList::reverse_iterator vtlRit = vertexList.rbegin();
while( vtlRit != vertexList.rend() ) {
int index = *vtlRit;
SLSF::Block block = vertexIndexBlockMap[ index ];
(void)++vtlRit;
if ( block != Udm::null && static_cast< std::string >( block.BlockType() ) == "DataStoreMemory" ) {
VertexList::reverse_iterator vtlRit2 = vtlRit;
vertexList.splice( vertexList.end(), vertexList, vtlRit2.base() );
}
}
int priority = 0;
for( VertexList::reverse_iterator vtlRit = vertexList.rbegin() ; vtlRit != vertexList.rend() ; ++vtlRit ) {
int index = *vtlRit;
SLSF::Block block = vertexIndexBlockMap[ index ];
if ( block == Udm::null ) { // unit delay as source is not registered - we will invoke it initially, and invoke it as destination in the priority order
// const std::string& bt = blk.BlockType();
// assert(bt.compare("UnitDelay") == 0);
/* Unit Delay Block as destination */
continue;
}
block.Priority() = priority++;
}
}
/** Extract the master block from <code>problem</code>.
* The constructor also sets up the solver for the newly created master
* block. The master block can only be extracted if all sub-blocks have
* already been extracted.
* @param problem The problem from which to extract the master.
* @param blocks The sub blocks that have already been extracted.
*/
BendersOpt::Block::Block(Problem const *problem, BlockVector const &blocks)
: env(), number(-1), vars(0), rows(0), cplex(0), cb(0)
{
IloNumVarArray problemVars = problem->getVariables();
IloRangeArray problemRanges = problem->getRows();
IloExpr masterObj(env);
IloNumVarArray masterVars(env);
IloRangeArray masterRows(env);
// Find columns that do not intersect block variables and
// copy them to the master block.
IdxMap idxMap;
RowSet rowSet;
for (IloInt j = 0; j < problemVars.getSize(); ++j) {
IloNumVar x = problemVars[j];
if ( problem->getBlock(x) < 0 ) {
// Column is not in a block. Copy it to the master.
IloNumVar v(env, x.getLB(), x.getUB(), x.getType(), x.getName());
varMap.insert(VarMap::value_type(v, x));
masterObj += problem->getObjCoef(x) * v;
idxMap[x] = masterVars.getSize();
masterVars.add(v);
}
else {
// Column is in a block. Collect all rows that intersect
// this column.
RowSet const &intersected = problem->getIntersectedRows(x);
for (RowSet::const_iterator it = intersected.begin();
it != intersected.end(); ++it)
rowSet.insert(*it);
idxMap[x] = -1;
}
}
// Pick up the rows that we need to copy.
// These are the rows that are only intersected by master variables,
// that is, the rows that are not in any block's rowset.
for (IloInt i = 0; i < problemRanges.getSize(); ++i) {
IloRange r = problemRanges[i];
if ( rowSet.find(r) == rowSet.end() ) {
IloRange masterRow(env, r.getLB(), r.getUB(), r.getName());
IloExpr lhs(env);
for (IloExpr::LinearIterator it = r.getLinearIterator(); it.ok(); ++it)
{
lhs += it.getCoef() * masterVars[idxMap[it.getVar()]];
}
masterRow.setExpr(lhs);
masterRows.add(masterRow);
}
}
// Adjust variable indices in blocks so that reference to variables
// in the original problem become references to variables in the master.
for (BlockVector::const_iterator b = blocks.begin(); b != blocks.end(); ++b) {
for (std::vector<FixData>::iterator it = (*b)->fixed.begin(); it != (*b)->fixed.end(); ++it)
it->col = idxMap[problemVars[it->col]];
}
// Create the eta variables, one for each block.
// See the comments at the top of this file for details about the
// eta variables.
IloInt const firsteta = masterVars.getSize();
for (BlockVector::size_type i = 0; i < blocks.size(); ++i) {
std::stringstream s;
s << "_eta" << i;
IloNumVar eta(env, 0.0, IloInfinity, s.str().c_str());
masterObj += eta;
masterVars.add(eta);
}
// Create model and solver instance
vars = masterVars;
rows = masterRows;
IloModel model(env);
model.add(obj = IloObjective(env, masterObj, problem->getObjSense()));
model.add(vars);
model.add(rows);
cplex = IloCplex(model);
cplex.use(cb = new (env) LazyConstraintCallback(env, this, blocks,
firsteta));
for (IloExpr::LinearIterator it = obj.getLinearIterator(); it.ok(); ++it)
objMap.insert(ObjMap::value_type(it.getVar(), it.getCoef()));
}
//------------------------------------------------------------------------------
bool postdominatesAll(const BasicBlock *block, const BlockVector &blocks,
const PostDominatorTree *pdt) {
return std::all_of(
blocks.begin(), blocks.end(),
[block, pdt](BasicBlock *iter) { return pdt->dominates(block, iter); });
}
