Make all wire protocol structs stable across ABI. Before this, the structs would be laid out differently on 32-bit and 64-bit ABIs. If the heapprofd service was 64-bit, but the client 32, we would not read the structs correctly. Bug: 163551040 Change-Id: I99d00cd40523f6b799438bfa619b9af43a51603f
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.