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instance method
Mutex#sleep
mutex.sleep(timeout = nil) → number
thread_sync.c
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static VALUE
mutex_sleep(int argc, VALUE *argv, VALUE self)
{
VALUE timeout;
timeout = rb_check_arity(argc, 0, 1) ? argv[0] : Qnil;
return rb_mutex_sleep(self, timeout);
}
Releases the lock and sleeps timeout seconds if it is given and non-nil or forever. Raises ThreadError if mutex wasn’t locked by the current thread.
When the thread is next woken up, it will attempt to reacquire the lock.
Note that this method can wakeup without explicit Thread#wakeup call. For example, receiving signal and so on.