MPIResult.hpp

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#include <ostream>
#ifndef PRECICE_NO_MPI
 
#pragma once
 
#include <mpi.h>
#include <ostream>
 
#include "utils/String.hpp"
 
namespace precice {
namespace utils {
 
struct MPIResult {
  int code;
 
  MPIResult() = default;
 
  MPIResult(const MPIResult &other) = default;
 
  MPIResult(int res)
      : code(res) {}
 
  MPIResult &operator=(MPIResult other)
  {
    code = other.code;
    return *this;
  }
 
  operator bool() const
  {
    return code == MPI_SUCCESS;
  }
 
  std::string message() const
  {
    utils::StringMaker<MPI_MAX_ERROR_STRING> sm;
 
    int i;
    MPI_Error_string(code, sm.data(), &i);
    return sm.str();
  }
};
 
} // namespace utils
} // namespace precice
 
#endif