output.cc

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/*!
 *
 * Copyright (C) 2007 Technical University of Liberec.  All rights reserved.
 *
 * Please make a following refer to Flow123d on your project site if you use the program for any purpose,
 * especially for academic research:
 * Flow123d, Research Centre: Advanced Remedial Technologies, Technical University of Liberec, Czech Republic
 *
 * This program is free software; you can redistribute it and/or modify it under the terms
 * of the GNU General Public License version 3 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 021110-1307, USA.
 *
 *
 * $Id: output.cc 2505 2013-09-13 14:52:27Z jiri.hnidek $
 * $Revision: 2505 $
 * $LastChangedBy: jiri.hnidek $
 * $LastChangedDate: 2013-09-13 16:52:27 +0200 (Pá, 13 IX 2013) $
 *
 * @file    output.cc
 * @brief   The functions for all outputs (methods of classes: Output and OutputTime).
 *
 */

#include <string>
#include <typeinfo>
#include <petsc.h>
#include <boost/any.hpp>
#include <assert.h>

#include "system/xio.h"
#include "io/output.h"
#include "io/output_vtk.h"
#include "io/output_msh.h"
#include "mesh/mesh.h"
#include "input/accessors.hh"


using namespace Input::Type;

Record OutputTime::input_type
    = Record("OutputStream", "Parameters of output.")
    // The stream
    .declare_key("file", FileName::output(), Default::obligatory(),
            "File path to the connected output file.")
            // The format
    .declare_key("format", OutputTime::input_format_type, Default::optional(),
            "Format of output stream and possible parameters.")
    .declare_key("time_step", Double(0.0),
            "Time interval between outputs.\n"
            "Regular grid of output time points starts at the initial time of the equation and ends at the end time which must be specified.\n"
            "The start time and the end time are always added. ")
    .declare_key("time_list", Array(Double(0.0)),
            "Explicit array of output time points (can be combined with 'time_step'.")
    .declare_key("add_input_times", Bool(), Default("false"),
            "Add all input time points of the equation, mentioned in the 'input_fields' list, also as the output points.");


AbstractRecord OutputTime::input_format_type
    = AbstractRecord("OutputTime",
            "Format of output stream and possible parameters.");

/**
 * \brief This method add right suffix to .pvd VTK file
 */
static inline void fix_VTK_file_name(string *fname)
{
    // When VTK file doesn't .pvd suffix, then add .pvd suffix to this file name
    if(fname->compare(fname->size()-4, 4, ".pvd") != 0) {
        xprintf(Warn, "Renaming name of output file from: %s to %s.pvd\n", fname->c_str(), fname->c_str());
        *fname = *fname + ".pvd";
    }
}

/**
 * \brief This method add right suffix to .msh GMSH file
 */
static inline void fix_GMSH_file_name(string *fname)
{
    // When GMSH file doesn't .msh suffix, then add .msh suffix to this file name
    if(fname->compare(fname->size()-4, 4, ".msh") != 0) {
        xprintf(Warn, "Renaming name of output file from: %s to %s.msh\n", fname->c_str(), fname->c_str());
        *fname = *fname + ".msh";
    }
}


OutputDataBase *OutputTime::output_data_by_field_name
        (const std::string &field_name, DiscreteSpace ref_type)
{
    std::vector<OutputDataBase*> *data_vector;

    switch(ref_type) {
    case NODE_DATA:
        data_vector = &this->node_data;
        break;
    case CORNER_DATA:
        data_vector = &this->corner_data;
        break;
    case ELEM_DATA:
        data_vector = &this->elem_data;
        break;
    }

    /* Try to find existing data */
    for(auto &data : *data_vector)
        if (data->field_name == field_name)     return data;

    return nullptr;
}

/* Initialize static member of the class */
std::vector<OutputTime*> OutputTime::output_streams;

// Destroy all objects
void OutputTime::destroy_all(void)
{
    // Delete all objects
    for(std::vector<OutputTime*>::iterator ot_iter = OutputTime::output_streams.begin();
        ot_iter != OutputTime::output_streams.end();
        ++ot_iter)
    {
        delete *ot_iter;
    }

    OutputTime::output_streams.clear();
}

/*
OutputTime *OutputTime::output_stream_by_name(string name)
{
    OutputTime *output_time;
    // Try to find existing object
    for(std::vector<OutputTime*>::iterator output_iter = OutputTime::output_streams.begin();
            output_iter != OutputTime::output_streams.end();
            ++output_iter)
    {
        output_time = (*output_iter);
        if( output_time->name == name) {
            return output_time;
        }
    }

    return NULL;
}
*/

/*
OutputTime *OutputTime::output_stream_by_key_name(const Input::Record &in_rec, const string key_name)
{
    // TODO: do not try to find empty string and raise exception

    // Try to find record with output stream (the key is name of data)
    Input::Iterator<string> stream_name_iter = in_rec.find<string>(key_name);

    // If record was not found, then throw exception
    if(!stream_name_iter) {
        return nullptr;
    }

    // Try to find existing output stream
    return output_stream_by_name(*stream_name_iter);
}
*/

OutputTime* OutputTime::create_output_stream(const Input::Record &in_rec)
{
    OutputTime* output_time;

    Input::Iterator<Input::AbstractRecord> format = Input::Record(in_rec).find<Input::AbstractRecord>("format");

    if(format) {
        if((*format).type() == OutputVTK::input_type) {
            output_time = new OutputVTK(in_rec);
        } else if ( (*format).type() == OutputMSH::input_type) {
            output_time = new OutputMSH(in_rec);
        } else {
            xprintf(Warn, "Unsupported file format, using default VTK\n");
            output_time = new OutputVTK(in_rec);
        }
    } else {
        output_time = new OutputVTK(in_rec);
    }

    return output_time;
}

/*
OutputTime *OutputTime::output_stream(const Input::Record &in_rec)
{
    // testing rank of process
    int ierr, rank;
    ierr = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    ASSERT(ierr == 0, "Error in MPI_Comm_rank.");

    // It's possible now to do output to the file only in the first process
    //if(rank != 0) {
    //    xprintf(MsgLog, "NOT MASTER PROC\n");
    //    // TODO: do something, when support for Parallel VTK is added
    //    return NULL;
    //}

    OutputTime *output_time;
    string name = in_rec.val<string>("name");

    xprintf(MsgLog, "Trying to find output_stream: %s ... ", name.c_str());

    output_time = OutputTime::output_stream_by_name(name);
    if(output_time != NULL) {
        xprintf(MsgLog, "FOUND\n");
        return output_time;
    }

    xprintf(MsgLog, "NOT FOUND. Creating new ... ");

    output_time = OutputTime::create_output_stream(in_rec);
    OutputTime::output_streams.push_back(output_time);

    xprintf(MsgLog, "DONE\n");

    ASSERT(output_time == OutputTime::output_stream_by_name(name),"Wrong stream push back.\n");
    return output_time;
}
*/

void OutputTime::add_admissible_field_names(const Input::Array &in_array, const Input::Type::Selection &in_sel)
{
    vector<Input::Enum> field_ids;
    in_array.copy_to(field_ids);

    // first copy all possible field names from selection
    for (auto it = in_sel.begin(); it != in_sel.end(); ++it)
        //output_names.emplace(it->key_, false);        //introduced in gcc4.8 (C++11) - does not work with gcc4.7
                output_names.insert(std::pair<std::string, bool>(it->key_,false));

    // then mark those fields that will be saved
    for (auto it: field_ids)
        if (in_sel.has_value(it))
            output_names[in_sel.int_to_name(it)] = true;
}


OutputTime::OutputTime(const Input::Record &in_rec)
: input_record_(in_rec)
{
    int ierr;
    ierr = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    ASSERT(ierr == 0, "Error in MPI_Comm_rank.");
    
    /* It's possible now to do output to the file only in the first process */
    //if(rank!=0) {
    //    /* TODO: do something, when support for Parallel VTK is added */
    //    return;
    //}

    Mesh *mesh = NULL;  // This is set, when first register_* method is called

    ofstream *base_file;
    string *base_filename;

    string fname = in_rec.val<FilePath>("file");
    //string stream_name = in_rec.val<string>("name");

    Input::Iterator<Input::AbstractRecord> format = Input::Record(in_rec).find<Input::AbstractRecord>("format");

    // TODO: move this part to OutputVTK.cc and OutputMSH.cc
    // Check if file suffix is suffix of specified file format
    if(format) {
        if((*format).type() == OutputVTK::input_type) {
            // This should be pvd file format
            fix_VTK_file_name(&fname);
        } else if((*format).type() == OutputMSH::input_type) {
            // This should be msh file format
            fix_GMSH_file_name(&fname);
        } else {
            // Unsuported file format
            fix_VTK_file_name(&fname);
        }
    } else {
        // Default file format is VTK
        fix_VTK_file_name(&fname);
    }

    base_file = new ofstream;

    if (rank==0) {
        base_file->open(fname.c_str());
        INPUT_CHECK( base_file->is_open() , "Can not open output file: %s\n", fname.c_str() );
        xprintf(MsgLog, "Writing flow output file: %s ... \n", fname.c_str());
    }

    base_filename = new string(fname);

   //this->name = stream_name;
    this->current_step = 0;

    set_base_file(base_file);
    this->_base_filename = base_filename;
    set_mesh(mesh);

    this->time = -1.0;
    this->write_time = -1.0;

}

OutputTime::~OutputTime(void)
{
    /* It's possible now to do output to the file only in the first process */
     //if(rank != 0) {
     //    /* TODO: do something, when support for Parallel VTK is added */
     //    return;
    // }

     if(this->_base_filename != NULL) {
         delete this->_base_filename;
     }

     if(base_file != NULL) {
         base_file->close();
         delete base_file;
     }

     xprintf(MsgLog, "O.K.\n");
}


void OutputTime::mark_output_times(const TimeGovernor &tg)
{
    TimeMark::Type output_mark_type = tg.equation_fixed_mark_type() | tg.marks().type_output();

    double time_step;
    if (input_record_.opt_val("time_step", time_step)) {
        tg.add_time_marks_grid(time_step, output_mark_type);
    }

    Input::Array time_list;
    if (input_record_.opt_val("time_list", time_list)) {
        vector<double> list;
        time_list.copy_to(list);
        for( double time : list) tg.marks().add(TimeMark(time, output_mark_type));
    }

    bool add_flag;
    if (input_record_.opt_val("add_input_times", add_flag) && add_flag) {
        TimeMark::Type input_mark_type = tg.equation_mark_type() | tg.marks().type_input();
        vector<double> mark_times;
        // can not add marks while iterating through time marks
        for(auto it = tg.marks().begin(input_mark_type); it != tg.marks().end(input_mark_type); ++it)
            mark_times.push_back(it->time());
        for(double time : mark_times)
            tg.marks().add( TimeMark(time, output_mark_type) );

    }

}


void OutputTime::write_time_frame()
{
    int ierr, rank;
    ierr = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    ASSERT(ierr == 0, "Error in MPI_Comm_rank.");

    OutputTime *output_time = NULL;

    /* TODO: do something, when support for Parallel VTK is added */
    if (rank == 0) {
        // Write data to output stream, when data registered to this output
        // streams were changed
        if(write_time < time) {
            xprintf(MsgLog, "Write output to output stream: %s for time: %f\n", _base_filename->c_str(), time);
            write_data();
            // Remember the last time of writing to output stream
            write_time = time;
            current_step++;
        } else {
            xprintf(MsgLog, "Skipping output stream: %s in time: %f\n", _base_filename->c_str(), time);
        }
    }
    clear_data();
}
/*
void OutputTime::write_all_data(void)
{
    int ierr, rank;
    ierr = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    ASSERT(ierr == 0, "Error in MPI_Comm_rank.");

    OutputTime *output_time = NULL;

    // It's possible now to do output to the file only in the first process
//if(rank != 0) {
//        // TODO: do something, when support for Parallel VTK is added
//        return;
//    }
    if (rank == 0) {
        // Go through all OutputTime objects
        for(std::vector<OutputTime*>::iterator stream_iter = OutputTime::output_streams.begin();
                stream_iter != OutputTime::output_streams.end();
                ++stream_iter)
        {
            // Write data to output stream, when data registered to this output
            // streams were changed
            output_time = (*stream_iter);
            if(output_time->write_time < output_time->time) {
                xprintf(MsgLog, "Write output to output stream: %s for time: %f\n",
                        output_time->name.c_str(),
                        output_time->time);
                output_time->write_data();
                // Remember the last time of writing to output stream
                output_time->write_time = output_time->time;
                output_time->current_step++;
            } else {
                xprintf(MsgLog, "Skipping output stream: %s in time: %f\n",
                        output_time->name.c_str(),
                        output_time->time);
            }
        }
    }

    // Free all registered data
    for(auto *stream : OutputTime::output_streams) stream->clear_data();
}
*/

void OutputTime::clear_data(void)
{
    node_data.clear();
    corner_data.clear();
    elem_data.clear();
}



#define INSTANCE_register_field(spacedim, value) \
    template  void OutputTime::register_data<spacedim, value> \
        (const DiscreteSpace ref_type, Field<spacedim, value> &field);

#define INSTANCE_register_multifield(spacedim, value) \
    template void OutputTime::register_data<spacedim, value> \
        (const DiscreteSpace ref_type, MultiField<spacedim, value> &field);


#define INSTANCE_OutputData(spacedim, value) \
    template class OutputData<value>;


#define INSTANCE_DIM_DEP_VALUES( MACRO, dim_from, dim_to)                      \
        MACRO(dim_from, FieldValue<dim_to>::VectorFixed )                       \
        MACRO(dim_from, FieldValue<dim_to>::TensorFixed )

#define INSTANCE_TO_ALL( MACRO, dim_from) \
        MACRO(dim_from, FieldValue<0>::Enum ) \
        MACRO(dim_from, FieldValue<0>::EnumVector)                \
        MACRO(dim_from, FieldValue<0>::Integer)                \
        MACRO(dim_from, FieldValue<0>::Scalar)                  \
        MACRO(dim_from, FieldValue<0>::Vector)                  \
\
INSTANCE_DIM_DEP_VALUES(MACRO, dim_from, 2) \
INSTANCE_DIM_DEP_VALUES(MACRO, dim_from, 3) \

#define INSTANCE_ALL(MACRO) \
        INSTANCE_TO_ALL( MACRO, 3) \
        INSTANCE_TO_ALL( MACRO, 2)


INSTANCE_ALL( INSTANCE_register_field )
INSTANCE_ALL( INSTANCE_register_multifield )

//INSTANCE_TO_ALL( INSTANCE_OutputData, 0)


//INSTANCE_register_field(3, FieldValue<0>::Scalar)
//INSTANCE_register_multifield(3, FieldValue<0>::Scalar)
//INSTANCE_OutputData(3, FieldValue<0>::Scalar)