aos/logging/matrix_logging.h

#ifndef AOS_LOGGING_MATRIX_LOGGING_H_
#define AOS_LOGGING_MATRIX_LOGGING_H_

#include <string>
#include <functional>

#include "Eigen/Dense"

#include "aos/logging/interface.h"
#include "aos/die.h"
#include "aos/queue_primitives.h"

namespace aos {
namespace logging {

// Logs the contents of a matrix and a constant string.
// matrix must be an instance of an Eigen matrix (or something similar).
#define LOG_MATRIX(level, message, matrix)                          \
  do {                                                              \
    static const ::std::string kAosLoggingMessage(                  \
        LOG_SOURCENAME ": " STRINGIFY(__LINE__) ": " message);      \
    ::aos::logging::DoLogMatrixTemplated(level, kAosLoggingMessage, \
                                         (matrix).eval());          \
    /* so that GCC knows that it won't return */                    \
    if (level == FATAL) {                                           \
      ::aos::Die("DoLogStruct(FATAL) fell through!!!!!\n");         \
    }                                                               \
  } while (false)

template <class T>
void DoLogMatrixTemplated(log_level level, const ::std::string &message,
                          const T &matrix) {
  if (T::IsRowMajor) {
    typename T::Scalar data[matrix.rows() * matrix.cols()];
    ::Eigen::Map<T>(data, matrix.rows(), matrix.cols()) = matrix;
    internal::DoLogMatrix(level, message, TypeID<typename T::Scalar>::id,
                          matrix.rows(), matrix.cols(), data, 1);
  } else {
    internal::DoLogMatrix(level, message, TypeID<typename T::Scalar>::id,
                          matrix.rows(), matrix.cols(), matrix.data(), 1);
  }
}

}  // namespace logging
}  // namespace aos

#endif  // AOS_LOGGING_MATRIX_LOGGING_H_