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instance method

Thread::Mutex#lock

() -> self

mutex.lock → self

# File tmp/rubies/ruby-4.1.0-preview1/thread_sync.rb, line 360
def lock
  Primitive.rb_mut_lock
end

Attempts to grab the lock and waits if it isn’t available. Raises ThreadError if mutex was locked by the current thread.

See also .new #locked? #owned? also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1