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Phase 5 (goroutines + channels) opens.
lib/go/sched.sx is the **independent implementation** referenced by
plans/lib-guest-scheduler.md — the first-consumer cut whose realised
shape will inform the eventual sister kit.
Channel representation:
(list :go-chan SEND-FN RECV-FN CLOSED?-FN CLOSE!-FN)
Each closure shares a mutable `buf` (a list mutated via append! and
set!) and a `closed` flag. Channel identity is closure-instance —
two `make()` calls produce distinct values per Go spec § Channel types.
Primitive API in sched.sx:
go-make-chan / go-chan? / go-chan-send! / go-chan-recv! /
go-chan-closed? / go-chan-close!
Eval integration in eval.sx:
* `make` and `close` added as builtins. v0 `make()` takes no args
and returns an unbounded-buffer channel.
* `:send` stmt → go-chan-send! on the channel.
* Unary `<-` recv on channel values → go-chan-recv!. `:empty`
sentinel converted to nil (stand-in for blocking semantics).
* `:go expr` → synchronous eval (v0 limitation, see sched.sx
header).
**v0 concurrency model — synchronous goroutines.** SX doesn't expose
first-class continuations to guest code, so v0 runs `go f()`
immediately and depends on the spawned goroutine running to
completion before the main goroutine receives. This is the right
semantics for the simple producer/consumer patterns covered here.
True preemption with blocking send/recv is Phase 5b — requires either
a CEK-style trampolining eval rewrite or kit-level continuation
support. Logged in sched.sx header and in the sister-plan diary.
Runtime suite (12 tests):
* 6 direct API tests: identity, FIFO order, closed-flag
* 6 source-level: make + send + recv, go ping-pong, close,
multi-goroutine fan-in, worker-with-result
Sister-plan scheduler diary updated with the channel-as-closure-
bundle insight and the v0 synchronous-spawn caveat.
runtime 12/12, total 469/469.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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324 B
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16 lines
324 B
Markdown
# Go-on-SX Scoreboard
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**Total: 469 / 469 tests passing**
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| | Suite | Pass | Total |
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|---|---|---|---|
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| ✅ | lex | 129 | 129 |
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| ✅ | parse | 176 | 176 |
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| ✅ | types | 72 | 72 |
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| ✅ | eval | 80 | 80 |
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| ✅ | runtime | 12 | 12 |
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| ⬜ | stdlib | 0 | 0 |
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| ⬜ | e2e | 0 | 0 |
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Generated by `lib/go/conformance.sh`.
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