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Extend the var _ Interface = (*Concrete)(nil) coverage started in j3 to
cover the remaining public types not yet guarded:
- *file.FdFile → file.File (file/file.go)
- streamrow.Row → globalfilter.Candidate (streamrow/row.go; adds
globalfilter import — no cycle since globalfilter does not import streamrow)
- *streamrow.RingBuffer → eventstream.Source
(tui/eventstream/ringbuffer.go; already a type alias for streamrow.RingBuffer)
- *probemanager.Manager → tui/probes.Manager (tui/probes/model.go)
- All 9 generated *types.*Event types → event.Event in the new file
internal/event/interface_assertions.go (non-generated, lives in the event
package which already imports types, so no new import cycle)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Extract GetTraceId/GetPid/GetTid into EventIdentity (routing and
aggregation concerns) and Recycle into EventLifecycle (pool memory
management). Event embeds both and retains String, GetTime, Equals.
All existing implementations satisfy the composed interface unchanged.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Run gofmt -w on 9 files that had minor alignment/whitespace drift
(pair.go, filter.go, ior_mode_registry.go, ior_mode_test.go,
runtime.go, engine.go, dashboard/model.go, flamegraph/model.go,
flamegraph/renderer.go).
Add two new Mage targets to Magefile.go:
- `mage fmt` – rewrites all .go files in-place via go/format
- `mage fmtCheck` – dry-run check; fails with a list of offending
files, suitable as a CI gate
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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BPF timestamps can be non-monotonic across CPUs (NTP step, TSC skew).
When exit < enter or enter < prevPairTime the uint64 subtraction wraps
to a huge value, corrupting latency histograms and flamegraph weights.
Clamp both Duration and DurationToPrev to 0 instead of underflowing.
Add TestPairCalculateDurationsNegativeDelta to cover this case.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Amp-Thread-ID: https://ampcode.com/threads/T-019c8012-eaeb-768d-a264-5a704f3939ef
Co-authored-by: Amp <amp@ampcode.com>
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- Implement helper function makeEnterFcntlEvent for test data creation
- Add test for F_SETFL flag modification (temporarily disabled due to failure)
- Add test for F_DUPFD file descriptor duplication
- Add test for F_DUPFD_CLOEXEC with O_CLOEXEC flag
- Add test for fcntl error handling (ret=-1)
- Add test for invalid file descriptors
Bug fixes:
- Fix NewFdWithPid to properly initialize fd field
- Fix event pair pool to properly clear all fields on recycle
- Initialize all fields in NewPair to prevent stale data
The F_SETFL test is temporarily disabled pending investigation of
"expected a file.FdFile" panic during event processing.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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