Support crate for rustc's self-profiling feature

This crate is maintained by the Rust compiler team and in particular by the self-profile working group. It is currently only meant to be used within rustc itself, so APIs may change at any moment.

measureme is the core library which contains a fast, efficient framework for recording events and serializing them to a compact binary format. It is integrated into rustc via the unstable -Z self-profile flag.

Documentation

summarize produces a human readable summary of measureme profiling data. It contains two main modes:

• summarize which groups the profiling events and orders the results by time taken.
• diff which compares two profiles and outputs a summary of the differences.

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stack_collapse reads measureme profiling data and outputs folded stack traces compatible with the Flame Graph tools.

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flamegraph reads measureme profiling data and outputs Flame Graph.

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crox turns measureme profiling data into files that can be visualized by the Chromium performance tools.

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mmedit is for editing .mm_profdata files generated by measureme.

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mmview is for printing the event data generated by measureme.

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analyzeme is a library with common functionality for measureme tools.

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decodeme holds the decoding definitions of the profiling event data from measureme.

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1. Bump version of measureme, decodeme and analyzeme crates in the root Cargo.toml file
   • Update both workspace.version and workspace.dependencies.[analyzeme/decodeme/measureme].version
2. Update changelog with latest changes
   • You can use https://github.com/rust-lang/measureme/compare/<last-released-tag>...master to see what has changed since the last released tag
3. Merge a PR with the changes above (e.g. #240)
4. Create a git tag based on the merged PR, and push it
5. Create a GitHub release manually based on that tag, CI will then take care of publishing the crates