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class method

GC.verify_compaction_references

GC.verify_compaction_references(toward: nil, double_heap: false) → hash

# File tmp/rubies/ruby-3.1.3/gc.rb, line 256
def self.verify_compaction_references(toward: nil, double_heap: false)
  Primitive.gc_verify_compaction_references(double_heap, toward == :empty)
end

Verify compaction reference consistency.

This method is implementation specific. During compaction, objects that were moved are replaced with T_MOVED objects. No object should have a reference to a T_MOVED object after compaction.

This function doubles the heap to ensure room to move all objects, compacts the heap to make sure everything moves, updates all references, then performs a full GC. If any object contains a reference to a T_MOVED object, that object should be pushed on the mark stack, and will make a SEGV.

See also .total_time .verify_internal_consistency .stress= .verify_transient_heap_internal_consistency also in 4.1 · 3.3 · 3.2 · 3.0

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