lib/benchmark_driver/runner/ips.rb in benchmark_driver-0.13.1 vs lib/benchmark_driver/runner/ips.rb in benchmark_driver-0.13.2

@@ -194,11 +194,14 @@
     def render(result:)
       prelude = preludes.reject(&:nil?).reject(&:empty?).join("\n")
       <<-RUBY
 #{prelude}
 
-if Process.respond_to?(:clock_gettime) # Ruby 2.1+
+if #{loop_count} == 1
+  __bmdv_empty_before = 0
+  __bmdv_empty_after = 0
+elsif Process.respond_to?(:clock_gettime) # Ruby 2.1+
   __bmdv_empty_before = Process.clock_gettime(Process::CLOCK_MONOTONIC)
   #{while_loop('', loop_count)}
   __bmdv_empty_after = Process.clock_gettime(Process::CLOCK_MONOTONIC)
 else
   __bmdv_empty_before = Time.now
@@ -228,9 +231,11 @@
     private
 
     def while_loop(content, times)
       if !times.is_a?(Integer) || times <= 0
         raise ArgumentError.new("Unexpected times: #{times.inspect}")
+      elsif times == 1
+        return content
       end
 
       # TODO: execute in batch
       <<-RUBY
 __bmdv_i = 0