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Change Log

Unreleased (0.6.0) - Black Diamonds v6

0.5.0 - More Newspeak v5

The main focus of this release is to improve compliance with the Newspeak specification. Specifically, we added various language features to the parser to be able to parse the Newspeak benchmarks and main repository with only minor changes.

Newspeak Compatibility Improvements

  • Implement Newspeak setter send syntax and remove old assignment syntax #7, PR #170

  • Added support for Newspeak's full numeral syntax. This includes notation for a radix and the exponent notation. Examples: 16rFFFF, 2r10.11, 3.7e3 PR #172

  • Added support for object literals. Because of parsing issues, we currently use the keyword objL to identify literals. Otherwise, they are mostly compliant the Newspeak specification. #86, PR #112

  • Add support for message cascades #18, PR #176, PR #178

  • Add Newspeak type annotation support and local variable initializer expressions PR #175

  • Add array literals PR #173

  • Change standard file extension to .ns PR #181

  • Various improvements in PR #178

    • Support single quotes in strings as escape sequence
    • Support literal characters
    • Parse simultaneous slot definitions, but don't handle them yet.
    • Support methods named class

Changes for Development Setup

  • Added automatic formatting for Java code PR #131

  • Added automatic formatting of TypeScript code PR #167

General Maintenance

  • Fix handling of multiple stepping threads in Truffle PR #168

  • Ensure eager primitives get correct parent node set, and minor cleanup PR #171

  • Avoid block splitting when not necessary PR #177

  • Model promise BPs solely with onResolver and onResolution PR #169

  • Fix turn stepping operations, and introduce better actor testing framework PR #179

  • Update Truffle to latest version (>0.26) PR #163

  • Add missing @TruffleBoundaries for SubstrateVM PR #165

  • Simplify Object Model and add StorageAccessor PR #164

0.4.0 - Concurrency-Agnostic Debugger

This release introduces concurrency-agnostic debugging based on Kómpos. It is realized by using a debugger protocol that abstracts from concurrency concepts and instead uses a uniform representation and meta data that instructs Kómpos how to understand and visualize breakpoints, stepping operations, and data visualization

  • introduced a uniform trace format (PR #155)

  • added process view

  • refactor handling of breakpoints and stepping in interpreter and Kómpos

  • added advanced stepping operations and breakpoints for STM, fork/join, actors, CSP, threads and locks

Other Enhancements

  • Switch to unified Truffle+Graal repo PR #149

  • Updated to Truffle 0.25 PR #132

  • Use precise array type check PR #128

  • Make Kómpos tests more robust, include more info on failures, and use ephemeral ports if necessary PR #144

  • Fix various single stepping issues PR #143

  • Fix #perform:withArguments: primitive PR #130

  • Make sure that ./som without arguments does something useful PR #156

0.3.0 - 2017-04-06 <Programming>'17 Demo

Features for the Demo

  • Added trace replay functionality (PR #109)

    • Added -r flag to enable replay

  • Visualize all types of activities in system view (PR #116)

  • Block methods are named based on outer method's name

  • Enable display of code for unsuspended activities, i.e., activities not hitting a breakpoint

General Maintenance

  • Revised design of promises and implemented erroring/breaking of promises (PR #118)

  • Updated to Truffle 0.24+patches, from pre-0.22+patches

  • Added -J flag for JVM flags, e.g. -JXmx2g

  • Removed Truffle Debug REPL support, i.e., the -td flag. Has been deprecated in Truffle for a long time, and maintaining it seems not useful.

  • Added -vmd flag to enable debug output

0.2.0 - 2017-03-07 Extended Concurrency Support

Concurrency Support

  • Added basic support for shared-memory multithreading and fork/join programming (PR #52)

    • object model uses now a global safepoint to synchronize layout changes
    • array strategies are not safe yet

  • Added Lee and Vacation benchmarks (PR #78)

  • Configuration flag for actor tracing, -atcfg= example: -atcfg=mt:mp:pc turns off message timestamps, message parameters and promises

  • Added Validation benchmarks and a new Harness.

  • Added basic Communicating Sequential Processes support. See PR #84.

  • Added CSP version of PingPong benchmark.

  • Added simple STM implementation. See s.i.t.Transactions and PR #81 for details.

  • Added breakpoints for channel operations in PR #99.

  • Fixed isolation issue for actors. The test that an actor is only created from a value was broken (issue #101, PR #102)

  • Optimize processing of common single messages by avoiding allocation and use of object buffer (issue #90)

Interpreter Improvements

  • Turn writes to method arguments into errors. Before it was leading to confusing setter sends and 'message not understood' errors.

  • Simplified AST inlining and use objects to represent variable info to improve details displayed in debugger (PR #80).

  • Make instrumentation more robust by defining number of arguments of an operation explicitly.

  • Add parse-time specialization of primitives. This enables very early knowledge about the program, which might be unreliable, but should be good enough for tooling. (See Issue #75 and PR #88)

  • Added option to show methods after parsing in IGV with -im/--igv-parsed-methods (issue #110)

0.1.0 - 2016-12-15

This is the first tagged version. For previous changes, please refer to the pull requests from around that time.