terminate.hpp

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// Copyright Take Vos 2023.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "../utility/utility.hpp"
#include "../console/console.hpp"
#include "../telemetry/telemetry.hpp"
#include "../macros.hpp"
#include <exception>
#include <stdexcept>
#include <atomic>
#include <bit>
#include <format>
 
hi_export_module(hikogui.crt.terminate);
 
namespace hi { inline namespace v1 {
 
inline std::terminate_handler old_terminate_handler;
 
[[noreturn]] inline void terminate_handler() noexcept{
    using namespace std::literals;
 
    log_global.flush();
 
    auto title = std::string_view{};
    auto message = std::string_view{};
 
    hilet ep = std::current_exception();
    if (ep) {
        try {
            std::rethrow_exception(ep);
 
        } catch (std::exception const& e) {
            title = "Unhandled std::exception."sv;
            message = e.what();
 
        } catch (...) {
            title = "Unhandled unknown exception."sv;
            message = "<no data>"sv;
        }
 
        std::cerr << std::format("{}\n{}\n", title, message);
 
    } else {
        title = "Abnormal termination."sv;
        message = debug_message.exchange(nullptr, std::memory_order::relaxed);
    }
 
    dialog_ok(title, message);
 
    old_terminate_handler();
}
 
}} // namespace hi::v1