method

sleep

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sleep(*args) public

Suspends the current thread for duration seconds (which may be any number, including a Float with fractional seconds). Returns the actual number of seconds slept (rounded), which may be less than that asked for if another thread calls Thread#run. Zero arguments causes sleep to sleep forever.

Time.new    #=> 2008-03-08 19:56:19 +0900
sleep 1.2   #=> 1
Time.new    #=> 2008-03-08 19:56:20 +0900
sleep 1.9   #=> 2
Time.new    #=> 2008-03-08 19:56:22 +0900

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static VALUE
rb_f_sleep(int argc, VALUE *argv)
{
    time_t beg, end;

    beg = time(0);
    if (argc == 0) {
        rb_thread_sleep_forever();
    }
    else if (argc == 1) {
        rb_thread_wait_for(rb_time_interval(argv[0]));
    }
    else {
        rb_raise(rb_eArgError, "wrong number of arguments");
    }

    end = time(0) - beg;

    return INT2FIX(end);
}

sleep

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