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4 3360 druby Web

5 Who is translating it?

6

7 $32.00 International Journal of PARALLEL PROGRAMING Must buy!

8

9 toruby LT

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13 Linux Conference 2000 fall Perl/Ruby Conference /1

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15 Hello, Again. Ruby 01

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20 Remote Method Invocation Remote Procedure Call

21 Web Service XML-RPC

22 shttpsrv shttpsrv UI shttpsrv user

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24 druby RMI RMI, RPC

25 druby druby Ruby RMI RMI Ruby

26 druby Ruby

27

28 (2) Object

29 (3) Object Object

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31

32 def hoge(a1, a2, a3, &block)... raise FooError unless some_cond... return value

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34

35

36 Marshal dumpable Number, String, Boolean... can t dump Proc, Thread, File... pass by value pass by reference

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41 irb % irb --simple-prompt --noreadline % irb --simple-prompt --noreadline

42 DRb.start_service >> require drb/drb >> DRb.start_service =>...

43 front >> require drb/drb >> front = {} >> DRb.start_service('druby://localhost:12345', front)

44 DRbObject >> ro = DRbObject.new_with_uri('druby://localhost:12345') => #<DRb::DRbObject:0x...> >> ro.keys => [] >> ro.class => DRb::DRbObject >> ENV.each { k, v ro[k] = v} => {...} >> ro.keys => ["MANPATH", "CVS_RSH", "USER",...]

45 DRbObject >> ro = DRbObject.new_with_uri('druby://localhost:12345') => #<DRb::DRbObject:0x...> >> ro.keys => [] >> ro.class => DRb::DRbObject >> ENV.each { k, v ro[k] = v} => {...} >> ro.keys => ["MANPATH", "CVS_RSH", "USER",...]

46 DRbObject >> ro = DRbObject.new_with_uri('druby://localhost:12345') => #<DRb::DRbObject:0x...> >> ro.keys => [] >> ro.class => DRb::DRbObject >> ENV.each { k, v ro[k] = v} => {...} >> ro.keys => ["MANPATH", "CVS_RSH", "USER",...]

47 >> front.keys => ["MANPATH", "CVS_RSH", "USER",...]

48 >> front['stdout'] = $stdout => #<IO:0x130d80> >> ro['stdout'] => >> ro[ stdout ].puts( Hello, World. ) >> Hello, World.

49 >> front['stdout'] = $stdout => #<IO:0x130d80> >> ro['stdout'] => >> ro[ stdout ].puts( Hello, World. ) >> Hello, World.

50 >> front['stdout'] = $stdout => #<IO:0x130d80> >> ro['stdout'] => >> ro[ stdout ].puts( Hello, World. ) >> Hello, World.

51 >> front['stdout'] = $stdout => #<IO:0x130d80> >> ro['stdout'] => >> ro[ stdout ].puts( Hello, World. ) >> Hello, World.

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53

54

55 SizedQueue server require 'thread' require 'drb/drb' queue = SizedQueue.new(10) DRb.start_service('druby://localhost:12345', queue) sleep

56 Producer require 'drb/drb' DRb.start_service queue = DRbObject.new_with_uri('druby://localhost:12345') 100.times do n sleep(rand) queue.push(n)

57 Consumer require 'drb/drb' DRb.start_service queue = DRbObject.new_with_uri('druby://localhost:12345') 100.times do sleep(rand) puts queue.pop

58

59

60 DRbObject class DRbObject def initialize(obj, = uri = obj.id if obj def method_missing(msg_id, *a) succ, result = DRbConn.new(@uri).s_message(self, msg_id, *a) raise result if! succ result attr :ref

61 DRbObject URI ref

62 method_missing class DRbObject def initialize(obj, = uri = obj.id if obj def method_missing(msg_id, *a) succ, result = DRbConn.new(@uri).s_message(self, msg_id, *a) raise result if! succ result attr :ref

63 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

64 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

65 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

66 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

67 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

68 DRbServer def proc ns Thread.start do begin s = ns begin ro, msg, argv = recv_request(s) if ro and ro.ref obj = ObjectSpace._id2ref(ro.ref) else obj = DRb.front result = obj. s (msg.intern, *argv) succ = true rescue result = $! succ = false s_reply(s, succ, result) ensure close s if s

69 def dump(obj, soc) begin str = Marshal::dump(obj) rescue ro = DRbObject.new(obj) str = Marshal::dump(ro) soc.write(str) if soc return str

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71

72 hatena screenshot RK06 httpd DB Queue SnapShot Engine Linux 1. take a request 2. make the snapshot 3. store to DB SnapShot Engine Windows

73 RWiki In-Memory Database with logging Wiki Object Wiki druby ERB

74 WEBrick::CGI WEBrick CGI

75 require webrick/cgi require thread class SimpleCountCGI < WEBrick::CGI def initialize = def count value + 1) def do_get(req, res) res[ content-type ] = text/plain res.body = count.to_s SimpleCountCGI.new.start

76 WEBrick::CGI WEBrick::CGI front FastCGI

77 CGI require webrick/cgi require drb/drb require thread class SimpleCountCGI < WEBrick::CGI def initialize = def count value + 1) def do_get(req, res) res[ content-type ] = text/plain res.body = count.to_s DRb.start_service( druby://localhost:12321, SimpleCountCGI.new) sleep

78 cgi.start() module WEBrick class CGI... def start(env=env, stdin=$stdin, stdout=$stdout)...

79 4 lines CGI #!/usr/local/bin/ruby require drb/ drb DRb.start_service( druby://localhost:0 ) ro = DRbObject.new_with_uri( druby://localhost:12321 ) ro.start(env.to_hash, $stdin, $stdout)

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82 author of Linda Reviewer#1 Must buy!

83

84 Tuple Space Engine Client Engine TupleSpace Engine Client

85

86 Tuple Array Hash Marshal Marshal druby

87 Tuple [:chopstick, 2] [:room_ticket] [ abc, 2, 5] [:matrix, 1.6, 3.14] [ family, is-sister, Carolyn, Elinor ]

88 Pattern Tuple === case equals Regexp, Range, Class nil

89 Pattern [/^A/, nil, nil] [:matrix, Numeric, Numeric] [ family, is-sister, Carolyn, nil] [nil, age, (0..18)]

90 [ seki, age, 20] >> require rinda/tuplespace >> ts = Rinda::TupleSpace.new >> ts.write([ seki, age, 20]) >> ts.write([ sougo, age, 18]) >> ts.write([ leonard, age, 18]) >> ts.read_all([nil, age, 0..19]) => [["sougo", "age", 18], ["leonard", "age", 18]] >> ts.read_all([/^s/, age, Numeric]) => [["seki", "age", 20], ["sougo", "age", 18]]

91 >> ts = Rinda::TupleSpace.new => #<Rinda::TupleSpace:...> >> DRb.front['ts'] = ts => #<Rinda::TupleSpace:...> >> TupleSpaceProxy druby >> it = DRbObject.new_with_uri('druby://localhost:12345? ts') => #<DRb::DRbObject:...> >> ts = Rinda::TupleSpaceProxy.new(it) => #<Rinda::TupleSpaceProxy:...> >>

92 >> ts.write([:seki, :age, 20]) => #<Rinda::TupleEntry:...> >> TupleSpace :seki :age 20

93 >> ts.write([:seki, :age, 20]) => #<Rinda::TupleEntry:...> >> TupleSpace >> ts.take([:seki, :age, nil]) => [:seki, :age, 20] >> :seki :age 20

94 >> ts.take([:seki, :age, nil]) TupleSpace

95 >> ts.take([:seki, :age, nil]) >> ts.write([:seki, :age, 20]) => #<Rinda::TupleEntry:...> >> TupleSpace :seki :age 20

96 >> ts.take([:seki, :age, nil]) >> ts.write([:seki, :age, 20]) => #<Rinda::TupleEntry:...> >> TupleSpace => [:seki, :age, 20] >> :seki :age 20

97

98

99 TupleSpace >> tuple = ts.take([:count, nil])

100 TupleSpace >> tuple = ts.take([:count, nil]) >> ts.write([:count, 0]) => #<Rinda::TupleEntry:...> >> :count 0

101 TupleSpace >> tuple = ts.take([:count, nil]) >> ts.write([:count, 0]) => #<Rinda::TupleEntry:...> >> => [:count, 0] >> :count 0

102 TupleSpace >> tuple = ts.take([:count, nil]) >> ts.write([:count, 0]) => #<Rinda::TupleEntry:...> >> => [:count, 0] >> >> tuple = ts.take([:count, nil]) >> tuple[1] += 1 => 1 >> ts.write(tuple) => #<DRb::DRbObject:...> >> => [:count, 1] >> :count 1

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106 bin = [] while line = gets line.scan(/\w+/) do w bin << [w, 1]

107 bin.sort_by { pair pair[0]}

108 word = nil sum = 0 bin.sort_by { pair pair[0]}.each do key, value if word && word!= key p [word, sum] sum = 0 word = key sum += value p [word, sum]

109 bin = Hash.new { h, k h[k] = []} while line = gets line.scan(/\w+/) do w bin[w] << 1 bin.keys.sort.each do k p [k, bin[k].reduce(:+)]

110

111

112 Tiny MapReduce by TupleSpace bin = Rinda::TupleSpace.new while line = gets line.scan(/\w+/) do w bin.write([w, 1])

113 while true key,= bin.read_all([string, nil]).min_by { k, v k} break unless key sum = 0 while true begin key, value = bin.take([key, nil], 0) sum += value rescue break p [key, sum]

114 while true key,= bin.read_all([string, nil]).min_by { k, v k} break unless key sum = 0 while true begin key, value = bin.take([key, nil], 0) sum += value rescue break p [key, sum]

115

116 TokyoCabinet QDBM TokyoCabinet BigTable

117 OODB Koya OODB

118 Koya PRb - PostgreSQL OODB ID

119 Koya with SQLite2 SQLite awk SQL UNIX

120 Koya with QDBM Hash

121 Hash BigTable

122

123 3360 druby Web

124 Who is translating it?

125 $32.00 International Journal of PARALLEL PROGRAMING Must buy!

126

127 Must buy! druby

3360 druby Web Who is translating it? http://dx.doi.org/10.1007/s10766-008-0086-1 $32.00 International Journal of PARALLEL PROGRAMING Must buy! http://dx.doi.org/10.1007/s10766-008-0086-1 toruby The

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