stim::log_interface struct

Example

A thread-safe implementation which echoes log messages on stdout and stderr:

#include <iostream>
#include <mutex>
#include <stim/stim.h>

class iostream_logger final : public stim::log_interface
{
  private:
    struct output_t
    {
        std::ostream& stream;
        std::mutex mx;
    };
    output_t outputs[2] = { { std::cout }, { std::cerr } };

    using lock_type = std::unique_lock<std::mutex>;

  public:
    void write(stim::log_categories category,
               stim::string_view,
               uint32_t,
               stim::string_view message) noexcept override
    {
        auto& out = outputs[static_cast<size_t>(category >= stim::log_categories::warning)];

        const auto lock = lock_type{ out.mx };
        switch (category)
        {
            case stim::log_categories::warning: out.stream << "Warning: "; break;
            case stim::log_categories::error: out.stream << "Error: "; break;
        }
        out.stream << message.data() << "\n";
    }
};

Public functions

void write(log_categories category, string_view source_file, uint32_t source_line, string_view message) pure virtual noexcept

Writes a message to a logging output.

Function documentation