Program Listing for File general.cpp

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// ---------------------------------------------------------------------
// This file is part of falcon-core.
//
// Copyright (C) 2015, 2016, 2017 Neuro-Electronics Research Flanders
//
// Falcon-server is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Falcon-server 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 falcon-core. If not, see <http://www.gnu.org/licenses/>.
// ---------------------------------------------------------------------

#include "general.hpp"
#include <cmath>
#include <string>

void EventCounter::reset() {
  all_received = 0;
  target = 0;
  non_target = 0;
}

static int check_buffer_sizes(
    // can return:
    // -2: no check passed;
    // -1: loose check passed, but required strict check failed;
    //  1: loose checked passed (strict check not required))
    //  2: both checks passed (independent of the request required)
    double incoming,
    double &outgoing,  // can be changed inside if no strict check is present
    bool strict_check,
    size_t &n);  // number of incoming/upstream buffer-size that must be
                 // integrated to obtain one outgoing/downstream buffer-size

int check_buffer_sizes(double incoming, double &outgoing, bool strict_check,
                       size_t &n) {
  if (incoming > outgoing) {
    outgoing = incoming;
    n = 1;
    return -2;
  }

  if (!compare_doubles(
          remainder(outgoing, incoming))) {  // check remainder is zero
    if (!strict_check) {
      n = round(outgoing / incoming);
      outgoing = n * incoming;
      return 1;
    }
    n = 0;
    return -1;
  }
  n = outgoing / incoming;
  return 2;
}

void check_buffer_sizes_and_log(double incoming, double &outgoing,
                                bool strict_check, size_t &n,
                                std::string processor_name) {
  double outgoing_copy = outgoing;
  switch (check_buffer_sizes(incoming, outgoing, strict_check, n)) {
  case -2:
    throw std::runtime_error(
        processor_name +
        ". Selected outgoing buffer size must be higher or equal to the "
        "incoming buffer size (" +
        std::to_string(incoming) +
        " ms, requested (outgoing): " + std::to_string(outgoing_copy) + " ms)");
  case -1:
    throw std::runtime_error(
        processor_name +
        ". Selected outgoing buffer size must be an exact multiple of the "
        "incoming buffer size (" +
        std::to_string(incoming) +
        " ms, requested (outgoing): " + std::to_string(outgoing_copy) + " ms)");
  case 1:
    //LOG(UPDATE) << processor_name << ". Outgoing buffer size was adjusted to"
    //           << outgoing_copy << " ms.";
    break;
  }
}