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smarm/Cargo.toml
T
Claude 3850f6099b feat(cluster): RFC 010 c2 — owned wire envelope
Frame enum per the RFC inventory; hand-rolled encode/decode with u32 LE
length prefix + u8 tag; strings u16-prefixed, payload blobs u32-prefixed;
MAX_FRAME_LEN cap (control plane never carries bulk, §5). Streaming decode:
Ok(None) = need more bytes, every Err = corruption. postcard confined to
encode_payload/decode_payload — the single codec seam (§2); postcard gains
the alloc feature for to_allocvec (still no_std-aligned, no default
features). DownReason/RejectReason travel as single tag bytes; Down tag 5
is reserved for c11's Disconnected.

Tests: per-frame roundtrip, back-to-back frames, golden heartbeat bytes,
zero-length payload, every-prefix incomplete, unknown frame/enum tags,
length prefix lying long (with and without bytes present) and short,
truncation mid-string, adversarial lengths (u32::MAX, cap+1, zero), UTF-8
corruption, payload seam roundtrip through a real Send frame.
2026-08-14 13:23:50 +00:00

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[package]
name = "smarm"
version = "0.6.1"
edition = "2021"
rust-version = "1.95"
[lints.rust]
unexpected_cfgs = { level = "warn", check-cfg = ["cfg(loom)"] }
[lints.clippy]
# Library code must never hide a panic behind unwrap/expect. Both are denied; an
# intentional panic is written explicitly as `match { Err(e) => panic!(..) }`.
# panic!/unreachable! are deliberately left un-linted as the blessed explicit
# form. Enforced on the library target only (`cargo clippy --lib`); tests and
# examples unwrap freely and are not gated.
unwrap_used = "deny"
expect_used = "deny"
[features]
default = ["rq-mutex"]
smarm-trace = []
# RFC 007: native causal profiling. Zero cost when off (cf. smarm-trace): the
# hook in `maybe_preempt` and the resume-path fast-forward compile away; the
# two Slot ledger fields exist regardless and stay 0 (budget_cycles precedent).
smarm-causal = []
# RFC 016 Chunk 2: cycle-accurate per-actor time-budget accounting. Off by
# default — it costs two extra RDTSC reads per actor resume on the hot path
# (D6). The `ActorInfo.budget_cycles` field exists regardless; it just stays 0
# unless this is enabled.
budget-accounting = []
# RFC 016 Chunk 4: the live observer gen_server (src/observer.rs). Off by
# default (DECISION D10) — the read primitive (Chunks 1–3) is always present
# and unflagged; only the optional gen_server transport sits behind this, so a
# release build pays nothing for an observer it never starts.
observer = []
# RFC 010 c1: clustering. Off by default — the default build stays libc-only,
# byte-for-byte (gate checked per phase). serde is the payload contract,
# postcard the payload codec; both minimal (no default features). Everything
# cluster-shaped lives behind this flag.
cluster = ["dep:serde", "dep:postcard"]
# Run-queue selection: exactly one, compile-time (see src/run_queue.rs).
# Non-default variants need --no-default-features (features are additive).
rq-mutex = []
rq-mpmc = []
rq-striped = []
[build-dependencies]
cc = "1"
[dependencies]
libc = "0.2"
# RFC 010 §2 — only compiled under `--features cluster`.
serde = { version = "1", default-features = false, optional = true }
# `alloc` (not `std`): the seam serializes to Vec; postcard stays no_std-aligned.
postcard = { version = "1", default-features = false, features = ["alloc"], optional = true }
[target.'cfg(loom)'.dependencies]
loom = "0.7"
[dev-dependencies]
libc = "0.2"
# derive + std for cluster envelope tests only; the lib itself never needs them
serde = { version = "1", features = ["derive"] }
tokio = { version = "1", features = ["rt", "rt-multi-thread", "macros", "sync", "time"] }
[profile.dev]
panic = "unwind"
[profile.release]
panic = "unwind"
lto = "thin"
codegen-units = 1
[[bench]]
name = "primes"
harness = false
[[bench]]
name = "multi_scheduler"
harness = false
[[bench]]
name = "general"
harness = false
[[bench]]
name = "smarm_favored"
harness = false
[[bench]]
name = "tokio_favored"
harness = false
[[bench]]
name = "rq_micro"
harness = false
[[bench]]
name = "rq_runtime"
harness = false
[[bench]]
name = "switch_cost"
harness = false
# RFC 016 Chunk 4 — the live observer dump. Needs the optional gen_server.
[[example]]
name = "observer"
required-features = ["observer"]
[[example]]
name = "causal_pipeline"
required-features = ["smarm-causal"]
[[example]]
name = "causal_attrib_probe"
required-features = ["smarm-causal"]
[[example]]
name = "causal_probe"
required-features = ["smarm-causal"]