class method

GC.start

(?immediate_sweep: ::boolish, ?immediate_mark: ::boolish, ?full_mark: ::boolish) -> nil

start(full_mark: true, immediate_mark: true, immediate_sweep: true)

# File tmp/rubies/ruby-4.0.0/gc.rb, line 43
def self.start full_mark: true, immediate_mark: true, immediate_sweep: true
  Primitive.gc_start_internal full_mark, immediate_mark, immediate_sweep, false
end

Initiates garbage collection, even if explicitly disabled by GC.disable.

Keyword arguments:

full_mark: its boolean value determines whether to perform a major garbage collection cycle:
- true: initiates a major garbage collection cycle, meaning all objects (old and new) are marked.
- false: initiates a minor garbage collection cycle, meaning only young objects are marked.
immediate_mark: its boolean value determines whether to perform incremental marking:
- true: marking is completed before the method returns.
- false: marking is performed by parts, interleaved with program execution both before the method returns and afterward; therefore marking may not be completed before the return. Note that if full_mark is false, marking will always be immediate, regardless of the value of immediate_mark.
immediate_sweep: its boolean value determines whether to defer sweeping (using lazy sweep):
- true: sweeping is completed before the method returns.
- false: sweeping is performed by parts, interleaved with program execution both before the method returns and afterward; therefore sweeping may not be completed before the return.

Note that these keyword arguments are implementation- and version-dependent, are not guaranteed to be future-compatible, and may be ignored in some implementations.

See also .measure_total_time= .stat .measure_total_time .stat_heap also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

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