require_relative 'bench_helper'

module BenchUmask
  module Posix
    extend FFI::Library
    ffi_lib 'c'
    attach_function 'umask', [ :int ], :int
  end
  module NativeFile
    extend FFI::Library
    ffi_lib 'c'
    # Attaching the function to this module is about 10% faster than calling Posix.umask
    if FFI::Platform.windows?
      attach_function :_umask, '_umask', [ :int ], :int
    else
      attach_function :_umask, 'umask', [ :int ], :int
    end
    def self.umask(mask = nil)
      if mask
        _umask(mask)
      else
        old = _umask(0)
        _umask(old)
        old
      end
    end
  end
  puts "FFI umask=#{NativeFile.umask} File.umask=#{File.umask}"
  puts "Benchmark File.umask(0777) performance, #{ITER}x"
  10.times {
    puts Benchmark.measure {
      ITER.times { File.umask(0777) }
    }
  }
  puts "Benchmark FFI File.umask(0777) performance, #{ITER}x"

  10.times {
    puts Benchmark.measure {
      ITER.times { NativeFile.umask(0777) }
    }
  }
  puts "Benchmark FFI Posix.umask(0777) performance, #{ITER}x"

  10.times {
    puts Benchmark.measure {
      ITER.times { Posix.umask(0777) }
    }
  }
  puts "Benchmark File.umask() performance, #{ITER}x"
  10.times {
    puts Benchmark.measure {
      ITER.times { File.umask }
    }
  }
  puts "Benchmark FFI File.umask() performance, #{ITER}x"

  10.times {
    puts Benchmark.measure {
      ITER.times { NativeFile.umask }
    }
  }
end unless FFI::Platform.windows?