pytorch

e0364ccc - [caffe2] break one circular dependency between Caffe2 and ATen-cpu (#62632)

[caffe2] break one circular dependency between Caffe2 and ATen-cpu (#62632) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/62632 Update the caffe2/core/context.h to directly use `at::mt19937` instead of the `at::CPUGeneratorImpl` wrapper class from the ATen-cpu library. Using `at::CPUGeneratorImpl` causes circular dependencies between the ATen and caffe2 code. In particular the `at::CPUGeneratorImpl::get_state()` logic depends on CPU Tensor functionality that currently depends on code from caffe2. Test Plan: The RNG behavior should be identically to the previous code (perhaps even faster since we now avoid virtual function calls). buck test //caffe2/caffe2:caffe2_test_cpu \ //caffe2/caffe2/python: //caffe2/caffe2/fb/operators: Differential Revision: D29915701 fbshipit-source-id: f9b2eab8d3b21b2224d30bcf52be9c0e7eb7cd0a