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require 'benchmark'
require 'ffi'
iter = 100000
module Posix
extend FFI::Library
attach_function 'umask', [ :int ], :int
end
module NativeFile
extend FFI::Library
# 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 }
}
}
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