Function init_thread_pool

3rd/spdlog/include/spdlog/async.h:76–80

set global thread pool.

// set global thread pool.
inline void init_thread_pool(size_t q_size, size_t thread_count)
{
    auto tp = std::make_shared<details::thread_pool>(q_size, thread_count);
    details::registry::instance().set_tp(std::move(tp));
}

// get the global thread pool.
inline std::shared_ptr<spdlog::details::thread_pool> thread_pool()