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chore(cargo): bump version to 0.6.0 #119

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Merged
rocketman-code merged 1 commit into from
Feb 25, 2026
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chore(cargo): bump version to 0.6.0 #119

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18 changes: 18 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,11 +7,29 @@ and this project adheres to pre-1.0 [Semantic Versioning](https://semver.org/).

## [Unreleased]

## [0.6.0] - 2026-02-25

### Added

- `piano profile` command: one-step build, execute, and report workflow with `--ignore-exit-code` and `--` argument passthrough
- `piano run` command: execute the last-built instrumented binary with `--` argument passthrough
- Async function instrumentation: async functions are now profiled instead of skipped; Guard detects thread migration and records wall time safely across `.await` points
- Calibration harness for measuring instrumentation bias and overhead

### Fixed

- Allocation counter widened from u32 to u64, preventing silent truncation on high-allocation programs (#55)
- Synthetic frames created for companion-merged worker threads, preventing silent data loss (#57)
- Worker-thread percentiles show "-" instead of misleading aggregated values (#56)
- `flush()` writes to project-local `target/piano/runs/` instead of global directory (#84)
- `diff_runs` uses i128 for alloc_count delta, preventing wrap on extreme values (#101)
- `const`, `unsafe`, and `extern` functions skipped during instrumentation instead of causing compile errors (#102)
- Fork/adopt injection skipped for detached thread spawns (`std::thread::spawn`, `rayon::spawn`), preventing lifetime errors (#103)

### Changed

- Runtime timing uses hardware TSC counters (Apple Silicon CNTVCT, x86 RDTSC) instead of `Instant::now()`, reducing per-call overhead
- Timestamp capture reordered to minimize bias in self-time measurement

## [0.5.1] - 2026-02-24

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