test_ops_impl.cpp

#include <torch/library.h>
#include <ATen/ATen.h>
#include "test_ops.h"

#define TORCH_LIBRARY_IMPL_EXPAND(NAME, DEVICE, MODULE) \
  TORCH_LIBRARY_IMPL(NAME, DEVICE, MODULE)

#define TORCH_HAS_CUDA

namespace test_ops_impl {
    // 操作符的具体实现
    at::Tensor add_one(at::Tensor input) {
        return input + 1;
    }
    
    at::Tensor multiply_by_two(at::Tensor input) {
        return input * 2;
    }
}

// 在TORCH_LIBRARY_IMPL中注册CPU实现
TORCH_LIBRARY_IMPL_EXPAND(test_ops, CPU, cpu_ops) {
    cpu_ops.impl("add_one", &test_ops_impl::add_one);
    cpu_ops.impl("multiply_by_two", &test_ops_impl::multiply_by_two);
}

// 在TORCH_LIBRARY_IMPL中注册CUDA实现（如果有CUDA）
#ifdef TORCH_HAS_CUDA
TORCH_LIBRARY_IMPL_EXPAND(test_ops, CUDA, cuda_ops) {
    // 注意：这里假设CPU和CUDA使用相同的实现函数
    // 如果CUDA需要不同的实现，可以定义专门的CUDA版本函数
    cuda_ops.impl("add_one", &test_ops_impl::add_one);
    cuda_ops.impl("multiply_by_two", &test_ops_impl::multiply_by_two);
}
#endif