pytorch

eb374de3 - Back out "Revert D32606547: torch/monitor: add C++ events and handlers" (#69923)

Back out "Revert D32606547: torch/monitor: add C++ events and handlers" (#69923) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/69923 Original commit changeset: fbaf2cc06ad4 Original Phabricator Diff: D32606547 (https://github.com/pytorch/pytorch/commit/e61fc1c03b64e61ca4f5bbe278db7ee2cf35e8ff) This is the same thing as the original diff but just using a normal std::mutex instead of std::shared_timed_mutex which is not available on OSX 10.11. The performance difference should be negligible and easy to change down the line if it does become a bottleneck. Old failing build: https://github.com/pytorch/pytorch/runs/4495465412?check_suite_focus=true Pull Request resolved: https://github.com/pytorch/pytorch/pull/68783 Test Plan: buck test //caffe2/test/cpp/monitor:monitor will add ciflow tags to ensure mac builds are fine Reviewed By: aivanou Differential Revision: D33102715 fbshipit-source-id: 3816ff01c578d8e844d303d881a63cf5c3817bdb