Function generate_thread_id

source/threads/thread.cpp:13–16

namespace concurrencpp::details {
    namespace {
        std::uintptr_t generate_thread_id() noexcept {
            static std::atomic_uintptr_t s_id_seed = 1;
            return s_id_seed.fetch_add(1, std::memory_order_relaxed);
        }

        struct thread_per_thread_data {
            const std::uintptr_t id = generate_thread_id();