This document contains miscellaneous information related to development of synchronization validation.
The syncval error reporting code uses helper routines to generate the parts of the error messages. One potential issues with this shared code is when modifying a specific error message it's possible to accidentally break another one. The easiest way to validate the scope of the changes is to compare the output of all negative tests before and after the change.
The following components of the error messages vary between the runs:
- gtest timing
- dispatchable handles
--gtest_print_time=0 removes the timing information
Use this patch to replace all dispatchable handles with zero values. It should be applied only locally to layers/error_messages/logging.cpp.
Run the negative tests before and after the change:
--gtest_filter=NegativeSyncVal*.* --print-vu --gtest_print_time=0 >syncval_{before/after}.txt
Diff-compare output files.