mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-01 07:33:12 +08:00
Malte UblandClaude Opus 5.5
9a0a3f1562
Scope-B milestone NI-1, runtime side. Programs whose IR has a `nodeIsland.*` operation link scr_node_island.c and the SCR_NODE_ISLANDS build of scr_async.c; every other program links neither, byte for byte. - scr_node_island.c dlopens the bridge of a libnode pack on the first call (RTLD_NOW | RTLD_GLOBAL), checks its bridge ABI and that it links exactly the Node version recorded at build time, starts one Node environment and runs the embedded bootstrap (scr_node_island_host.cjs). A run that never calls into Node never maps libnode. The pack directory is SCRIPTC_LIBNODE at run time, else the recorded path; a `$ORIGIN/` path resolves against the executable's directory (the beside packaging, and the hook for shipping Node with the program). - scr_node_bridge.h is the C ABI between the runtime and the bridge; the runtime includes no Node or V8 header. The bridge (packages/libnode-common/bridge/scr_node_bridge.cc) initializes Node once with no default signal handling, no debug-signal handler or inspector, no stdio reinitialization and one platform worker, creates the environment from the built-in snapshot, routes Node's process exit to the runtime's exit sequence, promotes libnode to the global scope for native addons, and runs calls in a CallbackScope with a TryCatch. build-pack.mjs assembles a pack (libnode, the bridge, manifest.json) from a Node --shared build and the matching headers. - The SCR_NODE_ISLANDS build of scr_async.c adds a loop slot through which the runtime's loop drives Node's until NI-3 hosts the runtime's queues on Node's libuv: it keeps the program alive while Node has ref'd work, sleeps on Node's backend fd up to its next timer, and runs one non-blocking turn per loop turn. - The `nodeIsland` runtime feature (rule, link features, unit table, pack matrix row and scr_async.c variant), the nodeIsland.call/callSync libCalls, the install call in main, and the build-time record of the pack (node-islands/libnode.ts: --libnode=<pack>|beside or SCRIPTC_LIBNODE, SC8005 when none is usable, Node >=24.13.1). - The zero-cost gate and the bench nm test require that no good-code executable defines a Node island symbol. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>