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slang v0.2.4

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@github-actions github-actions released this 28 Oct 10:51
· 81 commits to main since this release
v0.2.4
d1209cd

Process, file watching, standard library, HTTP/2 and runtime updates since v0.2.3:

  • Processes: proc.spawn starts a child without a shell (optionally in its own process group with proc.SPAWN_GROUP, or with stdin on /dev/null with proc.SPAWN_NULL_STDIN); an empty environment list inherits the parent's. proc.wait waits for it with a deadline, parking the task on a pidfd (Linux) or kqueue (macOS) instead of blocking a worker, and proc.kill signals a child or its whole group.
  • File watching: os.watch, os.watch_next and os.watch_close report batches of changed paths under a directory tree, with exclusions, through inotify (Linux) or FSEvents (macOS). os.mtime_ns gives nanosecond modification times.
  • Standard library:
    • sort: in-place sorting and binary search.
    • crypto: Argon2id runs on dedicated KDF threads, and rsa_verify_sha256.
  • HTTP/2: a multiplexed client, and responses with trailers. The client closes its transport only after its reader stops.
  • Code generation: every opt and result is held by value; the current task is resolved once per function; loops with a numeric + stay on the leaf path. Loop GC roots stay current across iterations, and a chan_recv fill after a promoting wait is barriered.
  • Scheduler: idle workers spin and poll the network while spinning, and the parked-task registry is sharded off the GC lock.
  • Networking: reactor waiters are woken only through their own registration, and httpc applies the request deadline to connecting.
  • Build: gcc's LTO pass no longer warns on every program built.

Install

From a tarball (relocatable: unpack anywhere and run in place). Pick
the one for your platform below; each was unpacked outside the source tree
and used to build and run a new project before this release was published.

tar -xzf slang-0.2.4-darwin-arm64.tar.gz
./slang-0.2.4-darwin-arm64/bin/slangc --version     # slangc 0.2.4

From source:

git clone https://github.com/dolphlabs/slang && cd slang
git checkout v0.2.4
sudo make install          # PREFIX=/usr/local, or ~/.local

slangc new hello && cd hello && slangc main.sl --run

Upgrading a source install: run sudo make uninstall from the old
checkout first. make install overwrites the binary but never deletes
stale runtime files.

Requirements

slangc compiles to C, so every platform needs a C compiler (cc).

you import you need
anything a C compiler
net with TLS, crypto, httpc over https OpenSSL (macOS: brew install openssl; Debian/Ubuntu: apt install libssl-dev)
sql SQLite (Debian/Ubuntu: apt install libsqlite3-dev; ships with macOS)
compress, httpc zlib (Debian/Ubuntu: apt install zlib1g-dev; ships with macOS)

The Linux tarballs are built on Ubuntu 24.04 and need glibc 2.39 or later;
on an older distribution, build from source.

SHA-256

e348e1d957bae6bc9d01dd7e7a7b719328f7b76c31b547fed1a6464b641337c9  slang-0.2.4-darwin-arm64.tar.gz
405cd4899f75549fc7536ba4e54089e72a78f72735bf10d7b7ec63244ed480fe  slang-0.2.4-darwin-x86_64.tar.gz
7e4189bd223c915dfc792436355cc5a50b1dc98c08fb00b2f39566d446cd300b  slang-0.2.4-linux-aarch64.tar.gz
7de17b03e16db023a5ef03319136a7b6a5e4899d0b668e1233925635655071f1  slang-0.2.4-linux-x86_64.tar.gz
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