28ac89d810
* fix(#1008): tolerate EAGAIN + short writes in io output()/error() The I/O Module wrote stdout/stderr with a bare fs.writeSync(fd, data), assuming it blocks until the kernel accepts every byte. That is false when the fd is a non-blocking pipe (as under the parallel node:test runner on Linux CI): a full pipe throws EAGAIN and a partially-drained pipe returns a short count. The former caused spurious failures (e.g. bug-974 graphify property test threw EAGAIN); the latter risked silently truncating output. Add writeAllSync(fd, data): loop on short counts and retry EAGAIN/EINTR with a bounded backoff. The backoff sleep buffer is allocated lazily on the first retry (rare) and reused — keeping it out of module load avoids perturbing the SharedArrayBuffer-allocation accounting in perf-316 and costs nothing on the common no-retry path. Route output() and error() through it; non-transient errors (EPIPE) still propagate. Mirrors the transient-errno handling already applied to STATE.md lock acquisition (ACQUIRE_LOCK_RETRY_ERRNOS / #3776). Regression cases live in tests/io.test.cjs (the owning module's file, per the regression-test-name placement policy) and inject fs.writeSync via mock.method: EAGAIN/EINTR retry, short-write no-truncation, EPIPE still surfaces, and error() retries while still exit(1). Red against the pre-fix bare-writeSync io.cjs. * chore(#1008): add Fixed changeset for io EAGAIN/short-write fix
18 KiB
18 KiB