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Can we pass TraceKind to trace_object by value without losing performance?

Status: Open.

#1492 In mmtk/mmtk-core;

· wks opened on Apr 30, 2026

eBPF: Declare USDT probes in one place

A-toolsArea: Tools that help development or testingArea: Tools that help development or testing

C-refactoringCategory: RefactoringCategory: Refactoring

Status: Open.

#1490 In mmtk/mmtk-core;

· wks opened on Apr 30, 2026

Remove NullableObjectReference

Status: Open.

#1489 In mmtk/mmtk-core;

· wks opened on Apr 22, 2026

Refactor the FreeList data structure

A-docArea: DocumentationArea: Documentation

A-heapArea: Heap (including Mmapper, VMMap)Area: Heap (including Mmapper, VMMap)

C-refactoringCategory: RefactoringCategory: Refactoring

F-good-first-issueCall For Participation: Suitable issues for first-time contributorsCall For Participation: Suitable issues for first-time contributors

G-safetyGoal: SafetyGoal: Safety

Status: Open.

#1488 In mmtk/mmtk-core;

· wks opened on Apr 22, 2026

JikesRVM performance change after PR #1449

C-bugCategory: BugCategory: Bug

C-regressionCategory: Correctness or performance regressionCategory: Correctness or performance regression

Status: Open.

#1485 In mmtk/mmtk-core;

· qinsoon opened on Apr 22, 2026

Dynamic side metadata range may overlap with heap range.

Status: Open.

#1482 In mmtk/mmtk-core;

· wks opened on Apr 21, 2026

Disallow silent changes to semantics

Status: Open.

#1481 In mmtk/mmtk-core;

· qinsoon opened on Apr 20, 2026

malloc MarkSweep crashes during sweeping

Status: Open.

#1479 In mmtk/mmtk-core;

· wks opened on Apr 16, 2026

GC triggers (including mem balancer, or binding implemented triggers) do not work with concurrent plans

C-bugCategory: BugCategory: Bug

Status: Open.

#1478 In mmtk/mmtk-core;

· qinsoon opened on Apr 16, 2026

memory_manager::alloc should return error on OOM

Status: Open.

#1475 In mmtk/mmtk-core;

· wks opened on Apr 8, 2026

Arc<AllocatorContext> is never shared across threads

Status: Open.

#1474 In mmtk/mmtk-core;

· qinsoon opened on Apr 8, 2026

Trigger OOM at the end of GCs

C-bugCategory: BugCategory: Bug

Status: Open.

#1462 In mmtk/mmtk-core;

· qinsoon opened on Mar 20, 2026