Class EMathOp

en_ops/e_math.cc:27–66

      return Status::OK(); });

class EMathOp : public OpKernel
{
public:
    explicit EMathOp(OpKernelConstruction *context) : OpKernel(context)
    {
        OP_REQUIRES_OK(context, context->GetAttr("eid_low", &eid_low_));
        OP_REQUIRES_OK(context, context->GetAttr("eid_high", &eid_high_));
        OP_REQUIRES_OK(context, context->GetAttr("times", &times_));
        OP_REQUIRES_OK(context, context->GetAttr("num", &num_));
        lib = dlopen("/home/zhangyan/jhrsgx/privacy_test/privacy_tf/sgx_tf_ops/sgx.so", RTLD_LAZY);
        OP_REQUIRES(context, lib != NULL, errors::Unknown("Unable to load sgx.so!"));
    }
    void Compute(OpKernelContext *context) override
    {
        const Tensor &input = context->input(0);
        auto input_flat = input.flat<float>();

        const TensorShape &input_shape = input.shape();

        Tensor *output = NULL;
        OP_REQUIRES_OK(context, context->allocate_output(0, input_shape, &output));
        auto output_flat = output->flat<float>();
        int N = input_flat.size() / times_;

        unsigned long int eid_ = (eid_high_ << 32) + eid_low_;
        typedef void (*function)(unsigned long int eid, float *input, float num, int N, float *output);
        dlerror();
        function math_kernel = (function)dlsym(lib, "math");
        const char *dlsym_error = dlerror();
        OP_REQUIRES(context, !dlsym_error, errors::Unknown("loading of log failed: ", dlsym_error));
        math_kernel(eid_, (float *)input_flat.data(), num_, N, (float *)output_flat.data());
    };

private:
    void *lib;
    int64 eid_low_;
    int64 eid_high_;
    int64 times_;
    float num_;
};
REGISTER_KERNEL_BUILDER(Name("EMath").Device(DEVICE_CPU), EMathOp);