kvakvs/ErlangRT

ErlangRT - Runtime

Erlang Replacement Therapy. This is an attempt to make Erlang runtime (BEAM emulator) in Rust. This is not the first attempt so I kinda know what I'm doing.

Progress to the Proof of Concept

• Term library 80% (remaining 80% are in progress)
• External Term Format (decoder 70%, encoder 0%)
• BEAM Loader - mostly done
• VM and processes 40%
• VM loop and opcodes 45% (74 of 168)
• Some basic BIFs <15%
• Binaries, sub-binaries, binary heap, binary opcodes: <20%

Tests in priv/test2.erl work. Running make test tries to run init:boot/1 and produces the output above.

Compiling

• The source assumes that you have Erlang OTP 22+ source in a Git submodule in otp/, and the stdlib and preload BEAM files are compiled and ready. Makefile takes care of it.

• Install latest Rust and Cargo via Rustup

• Run make and with the magic of Bash autocomplete see which targets it supports. You might like:

  • make run - runs the executable with test args, whatever set by the developer, do not expect it to show any magical tricks;
  • make doc - builds doc pages in target/doc/erlang_rt/
  • make test - runs the tests
  • make build and make build-rel - builds but does not run the debug and the release target respectively

Currently the emulator expects to have preloaded BEAM modules from OTP 22+ located in otp/ Git submodule (Makefile takes care of it).

Editing and Code Navigation

I am using and strongly recommend IntelliJ IDEA CE (free version) with IntelliJ-Rust plugin (available in repositories tab inside IntelliJ).

Reference Material

• BEAM Wisdoms (I run this one)
• The BEAM book (I am also one of the editors there)

Contributing

See CONTRIBUTING.rst

License Inspection