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MMTk 0.7.0

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@qinsoon qinsoon released this 22 Sep 08:26
· 375 commits to master since this release
v0.7.0
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Learn about vigilant mode.

GC Plans

  • Refactored to extract common generational code from the existing generational copying plan.
  • Added the generational immix plan, a two-generation algorithm that uses immix as its mature generation.

Misc

  • Upgraded the Rust toolchain we use to nightly-2021-09-17 (rustc 1.57.0-nightly).
  • Added a new feature global_alloc_bit: mmtk-core will set a bit for each allocated object. This will later be
    used to implement heap iteration and to support tracing internal pointers.
  • Refactored the scheduler simplify the implementation by removing the abstract Scheduler, Context and WorkerLocal.
  • Renamed the incorrect parameter name primary to full_heap in a few prepare()/release() methods.
  • Renamed the phases in statistics reports from mu(mutator)/gc to other/stw(stop-the-world) so they won't cause
    confusion in concurrenct GC plans.
  • Fixed a few misuses of side metadata methods that caused concurrency issues in accessing the unlogged bit.
  • Fixed a bug in MallocSpace that caused side metadata was not mapped correctly if an object crossed chunk boundary.
  • Fixed a bug in MallocSpace that it may incorrectly consider a chunk's side metadata is mapped.
  • Fixed a bug in side metadata implementation that may cause side metadata not mapped if the side metadata size is less than a page.
  • Fixed regression in LockFreeImmortalSpace.
  • Fixed a few typos in the tutorial.
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