get_or_create_engine()

Core::Engine & MayaFlux::internal::get_or_create_engine

(

)

Definition at line 56 of file Core.cpp.

    {
        Core::Engine* engine = engine_ptr.load(std::memory_order_acquire);
        if (engine) {
            return *engine;
        }
 
        auto candidate = std::make_unique<Core::Engine>();
        Core::Engine* expected = nullptr;
        if (engine_ptr.compare_exchange_strong(expected, candidate.get(),
                std::memory_order_acq_rel, std::memory_order_acquire)) {
            engine = candidate.release();
            if (!atexit_registered.exchange(true, std::memory_order_acq_rel)) {
                std::atexit(cleanup_engine);
            }
            terminating.store(false, std::memory_order_release);
            initialized.store(true, std::memory_order_release);
        } else {
            engine = expected;
        }
        return *engine;
    }

References atexit_registered, cleanup_engine(), engine_ptr, initialized, and terminating.

Referenced by MayaFlux::get_context(), MayaFlux::Init(), MayaFlux::Init(), and MayaFlux::Init().

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