Make gn/write_buildflag_header.py executable This matters in certain contexts, such as attempting to run this as a genrule in AOSP. Test: N/A Bug: 346770535 Change-Id: Ia0f171cec74213087c40f4cb25c08fddaafbcc87
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.