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require 'ffi'
require 'java'
module Process
class Foreign
SC_CLK_TCK = com.kenai.constantine.platform.Sysconf::_SC_CLK_TCK.value
extend FFI::Library
ffi_lib FFI::Library::LIBC
class Times < FFI::Struct
layout \
:utime => :long,
:stime => :long,
:cutime => :long,
:cstime => :long
end
attach_function :times, [ :buffer_out ], :long
attach_function :sysconf, [ :int ], :long
Tms = Struct.new("Foreign::Tms", :utime, :stime, :cutime, :cstime)
end
def self.times
hz = Foreign.sysconf(Foreign::SC_CLK_TCK).to_f
t = Foreign::Times.alloc_out(false)
Foreign.times(t.pointer)
Foreign::Tms.new(t[:utime] / hz, t[:stime] / hz, t[:cutime] / hz, t[:cstime] / hz)
end
end
if $0 == __FILE__
while true
10.times { system("ls -l / > /dev/null") }
t = Process.times
puts "utime=#{t.utime} stime=#{t.stime} cutime=#{t.cutime} cstime=#{t.cstime}"
sleep 1
end
end
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