print_utils.hpp

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#pragma once
#ifndef KURLYK_HEADER_KURLYK_UTILS_PRINT_UTILS_HPP_INCLUDED
#define KURLYK_HEADER_KURLYK_UTILS_PRINT_UTILS_HPP_INCLUDED

 
#define KURLYK_PRINT kurlyk::utils::ThreadSafePrintStream{}
 
namespace kurlyk {
namespace utils {

    class ThreadSafePrintStream : public std::ostringstream {
    public:
        ThreadSafePrintStream() = default;
 
        ~ThreadSafePrintStream() {
            get_instance().print(this->str());
        }
 
    private:
        class PrintStream {
        public:
            void print(const std::string &str) {
                std::lock_guard<std::mutex> guard(m_mutex_print);
                std::cout << str;
            }
 
        private:
            std::mutex m_mutex_print;
        };
 
        static PrintStream& get_instance() {
            static PrintStream instance;
            return instance;
        }
    };
 
} // namespace utils
} // namespace kurlyk
 
#endif // KURLYK_HEADER_KURLYK_UTILS_PRINT_UTILS_HPP_INCLUDED