Add CPU profiling integration with span correlation#95
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Adds `profiling` feature that integrates tauri-plugin-profiling with tracing span correlation: - TracedProfilingExt: wraps profiling with automatic spans and logging - SpanTimingLayer: captures span enter/exit timing for correlation - SpanAwareProfilingExt: CPU profiling with span correlation report - SpanCorrelationReport: shows which spans were active during profiling This enables correlating CPU samples with tracing spans to understand which logical operations consume CPU time.
Demonstrates the profiling integration by adding: - SpanTimingLayer setup for span timing capture - run_profiled_work command showing SpanAwareProfilingExt usage - Example instrumented functions with CPU-intensive work
- Update README with profiling feature in features list - Add 8 integration tests for profiling types and SpanTimingLayer - Fix doc examples to use correct generate_context path - Fix doc examples to include use tauri::Manager
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Package Changes Through d46e2a0There are 2 changes which include tracing with minor, tracing-js with minor Planned Package VersionsThe following package releases are the planned based on the context of changes in this pull request.
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johncarmack1984
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Jan 14, 2026
# Version Updates Merging this PR will release new versions of the following packages based on your change files. # tracing ## [0.3.2] - 97f668f (#95 by @johncarmack1984) Add CPU profiling integration with span correlation via new `profiling` feature. Includes `TracedProfilingExt` for automatic span/logging around profiles, `SpanTimingLayer` for capturing span timing, and `SpanAwareProfilingExt` for correlating CPU samples with active tracing spans. # tracing-js ## [0.3.2] - 97f668f (#95 by @johncarmack1984) Add CPU profiling integration with span correlation via new `profiling` feature. Includes `TracedProfilingExt` for automatic span/logging around profiles, `SpanTimingLayer` for capturing span timing, and `SpanAwareProfilingExt` for correlating CPU samples with active tracing spans. Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Summary
profilingfeature flag that integrates withtauri-plugin-profilingfor sampling-based CPU profilingTracedProfilingExttrait for automatic span creation and logging around profilesSpanTimingLayerfor capturing span enter/exit timing during profilingSpanAwareProfilingExttrait for correlating CPU samples with active tracing spansProfileResult,ProfilingConfig,StartOptions, etc.)Test plan
just checkpasses (157 tests, up from 149)generate_context!pathsSpanTimingLayer,SpanTimingCapture, and type exportscustom-subscriberexample demonstrates span-aware CPU profiling