SoundPool: never-delete singleton to avoid exit race

    }

    // Retrieves the associated object, returns nullValue T if not available.

    T get(JNIEnv *env, jobject thiz) {

    T get(JNIEnv *env, jobject thiz) const {

        std::lock_guard lg(mLock);

        // NOLINTNEXTLINE(performance-no-int-to-ptr)

        auto ptr = reinterpret_cast<T*>(env->GetLongField(thiz, mFieldId));

//    is possible by checking if the WeakGlobalRef is null equivalent.

auto& getSoundPoolManager() {

    static ObjectManager<std::shared_ptr<SoundPool>> soundPoolManager(fields.mNativeContext);

    return soundPoolManager;

    // never-delete singleton

    static auto soundPoolManager =

            new ObjectManager<std::shared_ptr<SoundPool>>(fields.mNativeContext);

    return *soundPoolManager;

}

inline auto getSoundPool(JNIEnv *env, jobject thiz) {

auto& getSoundPoolJavaRefManager() {

    // Note this can store shared_ptrs to either jweak and jobject,

    // as the underlying type is identical.

    static ConcurrentHashMap<SoundPool *, std::shared_ptr<JWeakValue>> concurrentHashMap;

    return concurrentHashMap;

    static auto concurrentHashMap =

            new ConcurrentHashMap<SoundPool *, std::shared_ptr<JWeakValue>>();

    return *concurrentHashMap;

}

// make_shared_globalref_from_localref() creates a sharable Java global