Ruby. JRuby+Truffle and the to JITs. Chris Oracle Labs
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2 John Tenniel public domain in the UK and US Ruby JRuby+Truffle and the to JITs Chris Oracle Labs Copyright 2014, Oracle and/or its affiliates. All rights reserved.
3 Safe Harbor Statement The following is intended to provide some insight into a line of research in Oracle Labs. It is intended for informa@on purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or func@onality, and should not be relied upon in making purchasing decisions. Oracle reserves the right to alter its development plans and prac@ces at and the development, release, of any features or func@onality described in connec@on with any Oracle product or service remains at the sole discre@on of Oracle. Any views expressed in this presenta@on are my own and do not necessarily reflect the views of Oracle. Copyright 2014, Oracle and/or its affiliates. All rights reserved. 3
4 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 4
5 JRuby+Truffle A new open source implementa@on of Ruby by Oracle Labs with a JIT using next- gen JVM technology and par6al evalua6on, now part of JRuby Copyright 2014, Oracle and/or its affiliates. All rights reserved. 5
6 codon.com/compilers- for- free by Tom Stuart, licensed under a Crea@ve Commons A\ribu@on ShareAlike 3.0 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 6
7 Why is Ruby hard to Copyright 2014, Oracle and/or its affiliates. All rights reserved. 7
8 Fixnum to Bignum Monkey patching methods #binding ObjectSpace set_trace_func Thread#raise Copyright 2014, Oracle and/or its affiliates. All rights reserved. 8
9 elegantly solves all these problems Copyright 2014, Oracle and/or its affiliates. All rights reserved. 9
10 Slow interpreter Fast JITed code Copyright 2014, Oracle and/or its affiliates. All rights reserved. 10
11 Slow interpreter Fast JITed code Copyright 2014, Oracle and/or its affiliates. All rights reserved. 11
12 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 12
13 John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 13
14 John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 14
15 John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 15
16 Ruby Door to utopia of high performance John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 16
17 Just- compiler Leh something behind when we compiled John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 17
18 reverses the effects of the JIT John Tenniel public domain in the UK and US Copyright 2014, Oracle and/or its affiliates. All rights reserved. 18
19 What does do for Ruby? Copyright 2014, Oracle and/or its affiliates. All rights reserved. 19
20 Fixnum to Bignum Copyright 2014, Oracle and/or its affiliates. All rights reserved. 20
21 a + b + c We ll assume we already know these are Fixnums Copyright 2014, Oracle and/or its affiliates. All rights reserved. 21
22 t1 = Fixnum(a) + Fixnum(b) if t1.overflowed? t1 = Bignum(a) + Bignum(b) t2 = Bignum(t1) + Bignum(c) else t2 = Fixnum(t1) + Fixnum(c) if t2.overflowed? t2 = Bignum(t1) + Bignum(c) end end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 22
23 t1 = Fixnum(a) + Fixnum(b) deoptimize! if t1.overflowed? t2 = Fixnum(t1) + Fixnum(c) deoptimize! if t2.overflowed? Copyright 2014, Oracle and/or its affiliates. All rights reserved. 23
24 t1 = Fixnum(a) + Fixnum(b) if t1.overflowed? t1 = Bignum(a) + Bignum(b) t2 = Bignum(t1) + Bignum(c) else t2 = Fixnum(t1) + Fixnum(c) deoptimize! if t2.overflowed? end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 24
25 Monkey patching methods Copyright 2014, Oracle and/or its affiliates. All rights reserved. 25
26 my_object.my_method(x, y) Copyright 2014, Oracle and/or its affiliates. All rights reserved. 26
27 lookup my_method in my_object call it with (x, y) Copyright 2014, Oracle and/or its affiliates. All rights reserved. 27
28 if my_object.changed? lookup my_method in my_object call it with (x, y) else use cached my_method call it with (x, y) end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 28
29 if my_object.changed? deoptimize! else use cached my_method call it with (x, y) end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 29
30 use cached my_method call it with (x, y) Copyright 2014, Oracle and/or its affiliates. All rights reserved. 30
31 #binding Copyright 2014, Oracle and/or its affiliates. All rights reserved. 31
32 a = 14 b = [8.2, 3.4] Copyright 2014, Oracle and/or its affiliates. All rights reserved. 32
33 a: 14 b: Array 0: 1: Copyright 2014, Oracle and/or its affiliates. All rights reserved. 33
34 a: 14 b[0]: 8.2 b[1]: 3.4 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 34
35 a: 14 b[0]: 8.2 b[1]: Array 0: 1: Copyright 2014, Oracle and/or its affiliates. All rights reserved. 35
36 ObjectSpace set_trace_func Copyright 2014, Oracle and/or its affiliates. All rights reserved. 36
37 How JRuby+Truffle Copyright 2014, Oracle and/or its affiliates. All rights reserved. 37
38 1. Recreate the interpreter stack frame 2. Jump from the JITed code into the interpreter 3. Allow us to force threads to do this Copyright 2014, Oracle and/or its affiliates. All rights reserved. 38
39 loop do a = 14 b = 2 a + b end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 39
40 loop do a = 14 b = 2 a + b deoptimize! if should_deoptimize? end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 40
41 loop do a = 14 b = 2 a + b read the safepoint page end Copyright 2014, Oracle and/or its affiliates. All rights reserved. 41
42 JRuby+Truffle Performance Copyright 2014, Oracle and/or its affiliates. All rights reserved. 42
43 86% RubySpec language specs rubyspec.org, Brian Shirai et al Copyright 2014, Oracle and/or its affiliates. All rights reserved. 43
44 Method #send #binding Float Threads Frame- local variables C extensions Encodings ObjectSpace Regexp Thread#raise #eval Fixnum to Bignum promo@on set_trace_func Proc#binding Concurrency Constant invalida@on Debugging Closures Copyright 2014, Oracle and/or its affiliates. All rights reserved. 44
45 Method #send #binding Float Threads Frame- local variables C extensions Encodings ObjectSpace Regexp Thread#raise #eval Fixnum to Bignum promo@on set_trace_func Proc#binding Concurrency Constant invalida@on Debugging Closures Copyright 2014, Oracle and/or its affiliates. All rights reserved. 45
46 No, we can t run Rails yet but we re working towards it Copyright 2014, Oracle and/or its affiliates. All rights reserved. 46
47 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 47
48 chunky_png and psd.rb Willem van Bergen, Ryan LeFevre, Kelly Su\on, Layer Vault, Floorplanner et al Ruby logo copyright (c) 2006, Yukihiro Matsumoto, licensed under the terms of the Commons ShareAlike 2.5 agreement Copyright 2014, Oracle and/or its affiliates. All rights reserved. 48
49 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 49
50 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 50
51 Conclusions Copyright 2014, Oracle and/or its affiliates. All rights reserved. 51
52 Building on other projects JRuby logo copyright (c) Tony Price 2011, licensed under the terms of the Commons NoDerivs 3.0 Unported (CC BY- ND 3.0) Ruby logo copyright (c) 2006, Yukihiro Matsumoto, licensed under the terms of the Commons ShareAlike 2.5 agreement Rubinius logo licensed under the terms of the Commons NoDerivs 3.0 Unported Copyright 2014, Oracle and/or its affiliates. All rights reserved. 52
53 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 53
54 @ChrisGSeaton Copyright 2014, Oracle and/or its affiliates. All rights reserved. 54
55 Safe Harbor Statement The preceding is intended to provide some insight into a line of research in Oracle Labs. It is intended for informa@on purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or func@onality, and should not be relied upon in making purchasing decisions. Oracle reserves the right to alter its development plans and prac@ces at and the development, release, of any features or func@onality described in connec@on with any Oracle product or service remains at the sole discre@on of Oracle. Any views expressed in this presenta@on are my own and do not necessarily reflect the views of Oracle. Copyright 2014, Oracle and/or its affiliates. All rights reserved. 55
56 Copyright 2014, Oracle and/or its affiliates. All rights reserved. 56
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