[ui] Introduce sql_utils directory. Refactor a bunch of SQL-related concepts away from frontend/ for better discoverability and layering. Core definitions go into the new `src/trace_processor/sql_utils` directory. The visualisations go into the `frontend/widgets` directory. Change-Id: Iefcd806a63a1cafbda4b14d94b5b363081be4276
Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.
See https://perfetto.dev/docs or the /docs/ directory for documentation.