A simple, high performance text editor.
Greg Pomerantz
be48ad8157
internal/perf: single-goroutine profiler (no locks). When enabled by the /storage/emulated/0/PadPerf/enable marker it records one CSV row per logic frame (seq, ms, frame delta, page, scroll Dp, max-scroll Dp, total lines, visible byte range), logs a rolling ~1/s summary, and on Stop reports nearest-rank p50/p90/p99/max. Flushes per row-batch but never fsyncs per flush (avoids periodic hitches in the logic path). editor: PerfRecord package-level hook (nil when off) + ProbeRecord; Logic.emitFrame() now centralizes every frame emission so the profiler sees each logic frame exactly once, on the owner goroutine. State gains VisibleStart/VisibleEnd so the probe can confirm shaping stays viewport-bounded. logic: optional debug cmd poller (off by default) watches <dir>/cmd as a one-shot file (top/bottom/frac <0..1>/dp <int>) and the owner applies a clamped [0,MaxScroll] jump + frame. Enables deterministic large-offset scroll tests without pixel taps. main: wires the profiler when the marker file exists; logs present-fps every 2s; stops the profiler on Destroy. docs: README package inventory (add internal/perf); architecture §11 profiler facility; spec §5 invariant 7 (scroll always clamped to [0,maxScroll]) + §6 measured rows; development_plan v5 + Phase 6 results. Verified: go build/vet + full -race green. On-device 10 MB file: logic-frame cadence flat across offsets 0.02->1.0 (no large-offset degradation), visible byte range <=4.3 KB at every offset, clamping exact across 2->130,955-line files, PSS plateaus ~250 MB (bounded, no leak); profiler overhead negligible. |
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| .qwen | ||
| cmd/pad | ||
| doc | ||
| internal | ||
| .DS_Store | ||
| .gitignore | ||
| go.mod | ||
| go.sum | ||