Added API to change logging levels for JIT (#58821)
Summary:
Description:
- Before this, logging level could only be changed by changing the env
variable "PYTORCH_JIT_LOG_LEVEL"
- Can change the level from python now
- Have not added stream configuration for now
- Configuration is stored in a singleton class managing the options
Issue Link: https://github.com/pytorch/pytorch/issues/54188
Gotchas:
- Created separate functions
`::torch::jit::get_jit_logging_levels/set_jit_logging_levels` instead of
using the singleton class's method directly
- This is because when running test cases, two different instances
of the singleton are created for the test suite and the actual code
(`jit_log.cpp`)
- On using these methods directly, `is_enabled` calls the singleton
in `jit_log.cpp` while we are setting the config using another
singleton
- See: https://stackoverflow.com/questions/55467246/my-singleton-can-be-called-multiple-times
API:
- To set the level: `torch._C._jit_set_logging_option("level")`
- To get the level: `torch._C._jit_get_logging_option()`
Testing:
- UTs were added for C++
- A very simple UT was added for python to just check if the API is
being called correctly
- The API was checked by running trace in a sample python file
- Set env variable to "" and used `_jit_set_logging_option` in python to set the variable to `>dead_code_elimination`
- The error output had logs of form [DUMP..] [UPDATE...] etc
Fixes https://github.com/pytorch/pytorch/issues/54188
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58821
Reviewed By: soulitzer
Differential Revision: D29116712
Pulled By: ZolotukhinM
fbshipit-source-id: 8f2861ee2bd567fb63b405953d035ca657a3200f
