convergence.hpp

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#ifndef GKO_CORE_LOG_CONVERGENCE_HPP_
#define GKO_CORE_LOG_CONVERGENCE_HPP_


#include <ginkgo/core/log/logger.hpp>


#include <memory>


#include <ginkgo/core/matrix/dense.hpp>
#include <ginkgo/core/stop/criterion.hpp>


namespace gko {
namespace log {


template <typename ValueType = default_precision>
class Convergence : public Logger {
public:
    void on_criterion_check_completed(
        const stop::Criterion *criterion, const size_type &num_iterations,
        const LinOp *residual, const LinOp *residual_norm,
        const LinOp *solution, const uint8 &stopping_id,
        const bool &set_finalized, const Array<stopping_status> *status,
        const bool &one_changed, const bool &all_converged) const override;

    static std::unique_ptr<Convergence> create(
        std::shared_ptr<const Executor> exec,
        const mask_type &enabled_events = Logger::all_events_mask)
    {
        return std::unique_ptr<Convergence>(
            new Convergence(exec, enabled_events));
    }

    const size_type &get_num_iterations() const noexcept
    {
        return num_iterations_;
    }

    const LinOp *get_residual() const noexcept { return residual_.get(); }

    const LinOp *get_residual_norm() const noexcept
    {
        return residual_norm_.get();
    }

protected:
    explicit Convergence(
        std::shared_ptr<const gko::Executor> exec,
        const mask_type &enabled_events = Logger::all_events_mask)
        : Logger(exec, enabled_events)
    {}

private:
    mutable size_type num_iterations_{};
    mutable std::unique_ptr<LinOp> residual_{};
    mutable std::unique_ptr<LinOp> residual_norm_{};
};


}  // namespace log
}  // namespace gko


#endif  // GKO_CORE_LOG_CONVERGENCE_HPP_