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docs(code-runtime-python): drop the placebo dispose test and finish the remaining doc drift

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The review showed the added dispose case was a placebo (dispose in the same
tick as run means SIGTERM hits the group before the program body runs; the
group-emptied arm is already deterministically covered by the same-group
survivor case, which this removes the v8 ignore for). The test is deleted; the
stale silently-discards comment in the boundary test now says rejects; the
README Known Limitations gains the late-log-frame-drop and host-side
binding-value-memory entries. Pairing re-recorded.
This commit is contained in:
Chinesezjc
2026-08-31 15:02:38 +08:00
committed by Tianyi Cui
parent bc08f405cc
commit 666ff2855e
4 changed files with 9 additions and 29 deletions
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packages/code-runtime/code-runtime-python/README.md
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@@ -112,6 +112,8 @@ These limits define what the package does and does not cover; they are current p
- **The cross-language guard covers the executed surfaces and the frame field shapes, not the field types** — the mirror e2e compares required/optional field sets, not that `cpuSeconds` is an `int` on both sides; a type-level drift is caught by review plus the backend's real-subprocess suite.
- **A descendant that escapes the child's process group with `setsid()` is not reaped by the group teardown** — `kill(-pid)` cannot reach it; the run still settles on the value the done frame decided, and the close-deadline backstop forces settlement if the orphan holds the pipes open, but the orphan itself outlives the fiber until it exits on its own.
- **A `log` frame that arrives after settlement is dropped** — once the run has settled, host-side capture is closed; a late fd-3 `log` frame (from a thread that outlived the done frame) is discarded rather than appended to `logs`.
- **The host-side memory bound for a binding VALUE is the frame parse cap, not a seam budget** — a binding reply's value is rebuilt host-side and billed against `maxValueBytes`; an intermediate binding value has no seam-level byte cap and is bounded by the lossless-JSON serialization cost and process memory (see the binding-argument entry).
- **`run()` is one-shot** — `logs` become available only after `CodeRunResult` resolves; there is no streaming-log or progress interface for output produced by a running program.
- **No state persists across runs** — every request executes in a fresh subprocess; a persistent REPL-style kernel stays deferred until a backend brings its own logging scheme.
- **An fd-3 frame whose raw length exceeds 64 MiB settles the run as a worker-exit** — `maxLogBytes`/`maxValueBytes` are load-bounded to the same parser cap so an honest child's frames always fit; a model-constructed binding ARGUMENT above 64 MiB (a value with no seam-level budget) trips the same cap — an accepted residual of the OOM guard.