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path: root/gc/mmtk/src/weak_proc.rs
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2026-01-04[ruby/mmtk] Process obj_free candidates in parallelPeter Zhu
Redos commit 544770d which seems to have accidentally been undone in b27d935.
2026-01-01[ruby/mmtk] Format imports to be each on a new linePeter Zhu
https://github.com/ruby/mmtk/commit/42adba630e
2025-12-31Use `is_obj_encoding` instead of `is_data_encoding`Nobuyoshi Nakada
The argument to `is_data_encoding` is assumed to be `T_DATA`.
2025-12-31[ruby/mmtk] Split ProcessObjFreeCandidates to parallel and non-parallelPeter Zhu
This makes it easier to visualize in profilers which one is non-parallel. https://github.com/ruby/mmtk/commit/ba68b2ef3b
2025-12-31[ruby/mmtk] Process obj_free candidates in parallelPeter Zhu
This commit allows objects that are safe to be freed in parallel to do so. A decrease in object freeing time can be seen in profiles. The benchmarks don't show much difference. Before: -------------- -------------------- ---------- --------- bench sequential free (ms) stddev (%) RSS (MiB) activerecord 242.3 7.4 84.3 chunky-png 439.1 0.6 75.6 erubi-rails 1221.2 4.2 132.7 hexapdf 1544.8 1.8 429.1 liquid-c 42.7 7.4 48.5 liquid-compile 41.4 8.3 52.2 liquid-render 100.6 3.0 56.8 mail 108.9 2.1 65.1 psych-load 1536.9 0.6 43.4 railsbench 1633.5 2.6 146.2 rubocop 126.5 15.8 142.1 ruby-lsp 129.6 9.7 112.2 sequel 47.9 6.5 44.6 shipit 1152.0 2.7 315.2 -------------- -------------------- ---------- --------- After: -------------- ------------------ ---------- --------- bench parallel free (ms) stddev (%) RSS (MiB) activerecord 235.1 5.5 87.4 chunky-png 440.8 0.8 68.1 erubi-rails 1105.3 0.8 128.0 hexapdf 1578.3 4.1 405.1 liquid-c 42.6 7.1 48.4 liquid-compile 41.5 8.1 52.1 liquid-render 101.2 2.8 53.3 mail 109.7 2.7 64.8 psych-load 1567.7 1.1 44.4 railsbench 1644.9 1.9 150.9 rubocop 125.6 15.4 148.5 ruby-lsp 127.9 5.8 104.6 sequel 48.2 6.1 44.1 shipit 1215.3 4.7 320.5 -------------- ------------------ ---------- --------- https://github.com/ruby/mmtk/commit/4f0b5fd2eb
2025-12-29Implement moving Immix in MMTkPeter Zhu
This commit implements moving Immix in MMTk, which allows objects to move in the GC. The performance of this implementation is not yet amazing. It is very similar to non-moving Immix in many of them and slightly slower in others. The benchmark results is shown below. -------------- ----------------- ---------- --------- bench Moving Immix (ms) stddev (%) RSS (MiB) activerecord 241.9 0.5 86.6 chunky-png 447.8 0.8 74.9 erubi-rails 1183.9 0.8 136.1 hexapdf 1607.9 2.6 402.3 liquid-c 45.4 6.7 44.9 liquid-compile 44.1 9.3 53.0 liquid-render 105.4 4.5 55.9 lobsters 650.1 9.7 418.4 mail 115.4 2.1 64.4 psych-load 1656.8 0.8 43.6 railsbench 1653.5 1.3 149.8 rubocop 127.0 15.6 142.1 ruby-lsp 130.7 10.5 99.4 sequel 52.8 7.2 45.6 shipit 1187.0 3.9 311.0 -------------- ----------------- ---------- --------- -------------- --------------------- ---------- --------- bench Non-moving Immix (ms) stddev (%) RSS (MiB) activerecord 218.9 2.7 86.1 chunky-png 464.6 0.8 66.7 erubi-rails 1119.0 4.3 132.7 hexapdf 1539.8 1.8 425.2 liquid-c 40.6 6.9 45.2 liquid-compile 40.6 8.1 52.9 liquid-render 99.3 2.3 48.3 mail 107.4 5.3 65.4 psych-load 1535.6 1.0 39.5 railsbench 1565.6 1.1 149.6 rubocop 122.5 14.3 146.7 ruby-lsp 128.4 10.7 106.4 sequel 44.1 4.0 45.7 shipit 1154.5 2.7 358.5 -------------- --------------------- ---------- ---------
2025-12-25Implement declarative weak references in MMTkPeter Zhu
2025-07-30[ruby/mmtk] Skip weak references that are special constsPeter Zhu
If a reference marked weak becomes a special const, it will crash because it is not a GC handled object. We should skip special consts here. https://github.com/ruby/mmtk/commit/870a79426b
2025-07-29[ruby/mmtk] Fix warnings from cargo fmtPeter Zhu
https://github.com/ruby/mmtk/commit/84975a8840
2025-07-29[ruby/mmtk] Fix clippy warningsPeter Zhu
https://github.com/ruby/mmtk/commit/45f991578e
2025-05-30[ruby/mmtk] Fix clippy warnings and formatting.Kunshan Wang
We also enable `#![warn(unsafe_op_in_unsafe_fn)]` in the whole mmtk_ruby crate. https://github.com/ruby/mmtk/commit/8b8025f71a
2025-05-08Move `object_id` in object fields.Jean Boussier
And get rid of the `obj_to_id_tbl` It's no longer needed, the `object_id` is now stored inline in the object alongside instance variables. We still need the inverse table in case `_id2ref` is invoked, but we lazily build it by walking the heap if that happens. The `object_id` concern is also no longer a GC implementation concern, but a generic implementation. Co-Authored-By: Matt Valentine-House <matt@eightbitraptor.com> Notes: Merged: https://github.com/ruby/ruby/pull/13159
2024-11-22[ruby/mmtk] [Feature #20860] Implement Mark-Sweep with MMTKPeter Zhu
This commit implements the mark-sweep algorithm using MMTk and allows customizing the plan using MMTK_PLAN. https://github.com/ruby/mmtk/commit/6fea5e5ffc Co-Authored-By: Matt Valentine-House <matt@eightbitraptor.com>
2024-11-22[ruby/mmtk] [Feature #20860] Implement NoGC with MMTkPeter Zhu
This commit only supports initializing MMTk with NoGC and object allocation. https://github.com/ruby/mmtk/commit/39aa10e537 Co-Authored-By: Kunshan Wang <wks1986@gmail.com>
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