pytorch/caffe2/python/__init__.py
Jerry Zhang 9f4bcdf075 caffe2::DeviceType -> at::DeviceType (#11254)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/11254
Previously we use DeviceType in caffe2.proto directly, but it's an `enum` and have implicit conversion to int, which does not have type safety, e.g. we have to explicitly check for a device type is valid in event.h:
```
template <int d>
struct EventCreateFunctionRegisterer {
  explicit EventCreateFunctionRegisterer(EventCreateFunction f) {
    static_assert(d < MaxDeviceTypes, "");
    Event::event_creator_[d] = f;
  }
};
```
at::DeviceType is an `enum class`, and it does not have implicit conversion to int, and provides better type safety guarantees. In this diff we have done the following refactor(taking CPU as an example):

    1. caffe2::DeviceType → caffe2::DeviceTypeProto
    2. caffe2::CPU → caffe2::PROTO_CPU
    3. caffe2::DeviceType = at::DeviceType
    4. caffe2::CPU = at::DeviceType::CPU

codemod -d caffe2/caffe2 --extensions h,cc,cpp 'device_type\(\), ' 'device_type(), PROTO_'
+ some manual changes

In short, after this diff, in c++, caffe2::CPU refers to the at::DeviceType::CPU and the old proto caffe2::CPU will be caffe2::PROTO_CPU.
In python side, we have a temporary workaround that alias `caffe2_pb2.CPU = caffe2_pb2.PROOT_CPU` to make the change easier to review and this will be removed later.

Reviewed By: ezyang

Differential Revision: D9545704

fbshipit-source-id: 461a28a4ca74e616d3ee183a607078a717fd38a7
2018-09-05 16:28:09 -07:00

13 lines
603 B
Python

from __future__ import absolute_import, division, print_function, unicode_literals
from caffe2.proto import caffe2_pb2
# TODO: refactor & remove the following alias
caffe2_pb2.CPU = caffe2_pb2.PROTO_CPU
caffe2_pb2.CUDA = caffe2_pb2.PROTO_CUDA
caffe2_pb2.MKLDNN = caffe2_pb2.PROTO_MKLDNN
caffe2_pb2.OPENGL = caffe2_pb2.PROTO_OPENGL
caffe2_pb2.OPENCL = caffe2_pb2.PROTO_OPENCL
caffe2_pb2.IDEEP = caffe2_pb2.PROTO_IDEEP
caffe2_pb2.HIP = caffe2_pb2.PROTO_HIP
caffe2_pb2.COMPILE_TIME_MAX_DEVICE_TYPES = caffe2_pb2.PROTO_COMPILE_TIME_MAX_DEVICE_TYPES
caffe2_pb2.ONLY_FOR_TEST = caffe2_pb2.PROTO_ONLY_FOR_TEST