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BendersOptions.cpp
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BendersOptions.cpp
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#include "BendersOptions.h"
/*!
* \brief Constructor of Benders Options
*
*/
BendersOptions::BendersOptions() {
#define BENDERS_OPTIONS_MACRO(name__, type__, default__) name__ = default__;
#include "BendersOptions.hxx"
#undef BENDERS_OPTIONS_MACRO
}
/*!
* \brief Write default options in "options_default" txt file
*/
void BendersOptions::write_default(){
std::ofstream file("options_default.txt");
print(file);
file.close();
}
/*!
* \brief Get path to master problem mps file from options
*/
std::string BendersOptions::get_master_path() const {
return INPUTROOT + PATH_SEPARATOR + MASTER_NAME;
}
/*!
* \brief Get path to structure txt file from options
*/
std::string BendersOptions::get_structure_path() const {
return INPUTROOT + PATH_SEPARATOR + STRUCTURE_FILE;
}
/*!
* \brief Get path to slave problem mps file from options
*/
std::string BendersOptions::get_slave_path(std::string const & slave_name) const {
return INPUTROOT + PATH_SEPARATOR + slave_name;
}
/*!
* \brief Read Benders options from file path
*
* \param file_name : path to options txt file
*/
void BendersOptions::read(std::string const & file_name) {
std::ifstream file(file_name.c_str());
if (file.good()) {
std::string line;
std::string name;
while (std::getline(file, line))
{
std::stringstream buffer(line);
buffer >> name;
#define BENDERS_OPTIONS_MACRO(name__, type__, default__) if(#name__ == name) buffer >> name__;
#include "BendersOptions.hxx"
#undef BENDERS_OPTIONS_MACRO
}
if (SLAVE_WEIGHT != "UNIFORM" && SLAVE_WEIGHT != "CONSTANT") {
std::string line;
std::string filename = INPUTROOT + PATH_SEPARATOR + SLAVE_WEIGHT;
std::ifstream file(filename);
if (!file) {
std::cout << "Cannot open file " << filename << std::endl;
}
while (std::getline(file, line))
{
std::stringstream buffer(line);
std::string problem_name;
buffer >> problem_name;
buffer >> _weights[problem_name];
}
}
}
else {
std::cout << "setting option to default" << std::endl;
write_default();
}
}
/*!
* \brief Print all Benders options
*
* \param stream : output stream
*/
void BendersOptions::print(std::ostream & stream)const {
#define BENDERS_OPTIONS_MACRO(name__, type__, default__) stream<<std::setw(30)<<#name__<<std::setw(50)<<name__<<std::endl;
#include "BendersOptions.hxx"
#undef BENDERS_OPTIONS_MACRO
stream << std::endl;
if (SLAVE_NUMBER == 1) {
stream << "Sequential launch (only one slave problem)" << std::endl;
}
}
/*!
* \brief Return slave weight value
*
* \param nslaves : total number of slaves
*
* \param name : slave name
*/
double BendersOptions::slave_weight(int nslaves, std::string const & name)const
{
if (SLAVE_WEIGHT == "UNIFORM") {
return 1 / static_cast<double>(nslaves);
}
else if (SLAVE_WEIGHT == "CONSTANT") {
double const weight(SLAVE_WEIGHT_VALUE);
return 1 / weight;
}
else {
return _weights.find(name)->second;
}
}