Method getMappedPtr

src/backend/opencl/Array.hpp:290–307

   public:
    mapped_ptr<T> getMappedPtr(cl_map_flags map_flags = CL_MAP_READ |
                                                        CL_MAP_WRITE) const {
        if (!isReady()) eval();
        auto func = [data = data](void *ptr) {
            if (ptr != nullptr) {
                cl_int err = getQueue().enqueueUnmapMemObject(*data, ptr);
                UNUSED(err);
                ptr = nullptr;
            }
        };

        T *ptr = (T *)getQueue().enqueueMapBuffer(
            *static_cast<const cl::Buffer *>(get()), CL_TRUE, map_flags,
            getOffset() * sizeof(T), elements() * sizeof(T), nullptr, nullptr,
            nullptr);

        return mapped_ptr<T>(ptr, func);
    }

    friend void evalMultiple<T>(std::vector<Array<T> *> arrays);