#!/usr/bin/env ruby -W0

def parseLine(line)
    line = line.sub /bytes_accessed_hist: \[/, ''
    line.chop!
    hist = line.split " "
    return [0,0,0] if hist[0] != '0'
    total_accesses = 0
    total_word_accesses = 0
    hist.each_index { |idx| 
       total_accesses += hist[idx].to_i 
       total_word_accesses += hist[idx].to_i if idx <= 4
    }
    total_bytes_consumed = 0
    hist.each_index { |idx| total_bytes_consumed += hist[idx].to_i * idx }
    return [total_accesses, total_word_accesses, total_bytes_consumed]
end

def printResults(total_transfers, total_word_transfers, total_bytes_consumed) 
   puts "Total bytes transfered: \t\t#{total_transfers.to_i*64}"
   puts "Total bytes consumed: \t\t\t#{total_bytes_consumed}"
   puts "Wasted bytes transfered: \t\t#{(total_transfers.to_i*64) - total_bytes_consumed}"
   puts "Percent of bytes wated: \t\t#{(total_transfers.to_f*64 - total_bytes_consumed.to_f)/(total_transfers.to_f*64.0)*100.0}%"
   puts "Total transfers one word or less: \t#{total_word_transfers}"
   number_of_bytes_with_word = ((total_transfers.to_i - total_word_transfers.to_i)*64) + (total_word_transfers.to_i*4)
   puts "Number of bytes transfered with word transfers: \t#{number_of_bytes_with_word}"
   puts "Percent of bytes saved with one word transfers: \t#{((total_transfers.to_f*64.0 - number_of_bytes_with_word.to_f)/(total_transfers.to_f*64.0))*100.0}%"
end

root = File.dirname(File.expand_path(__FILE__)) 

total_transfers = 0
total_word_transfers = 0
total_bytes_consumed = 0

stat_files = Dir.glob("#{root}/../results/*/stats")
stat_files.each { |stat_file|
  lines = `more #{stat_file} | grep bytes_accessed`
  workload_transfers = 0
  workload_word_transfers = 0
  workload_bytes_consumed = 0
  lines.each_line { |line|
    result = parseLine(line)
    workload_transfers += result[0]
    workload_word_transfers += result[1]
    workload_bytes_consumed += result[2]
  }
  puts "Results for #{stat_file}"
  printResults(workload_transfers, workload_word_transfers, workload_bytes_consumed)
  puts
  total_transfers += workload_transfers
  total_word_transfers += workload_word_transfers
  total_bytes_consumed += workload_bytes_consumed
}

puts "Average results"
printResults(total_transfers, total_word_transfers, total_bytes_consumed)