Class AllocatorPinned

src/backend/cuda/memory.hpp:75–84

CUDA Pinned Memory does not depend on device So we pass 1 as numDevices to the constructor so that it creates 1 vector of memory_info When allocating and freeing, it doesn't really matter which device is active

// of memory_info
// When allocating and freeing, it doesn't really matter which device is active
class AllocatorPinned final : public arrayfire::common::AllocatorInterface {
   public:
    AllocatorPinned();
    ~AllocatorPinned() = default;
    void shutdown() override;
    int getActiveDeviceId() override;
    size_t getMaxMemorySize(int id) override;
    void *nativeAlloc(const size_t bytes) override;
    void nativeFree(void *ptr) override;
};

}  // namespace cuda
}  // namespace arrayfire