January 2011 - macruby-tickets - lists.macosforge.org

[MacRuby] #1111: MacRuby throws an exception when undefine the String#length.
by MacRuby 14 Jan '11

14 Jan '11

#1111: MacRuby throws an exception when undefine the String#length. ----------------------------------+----------------------------------------- Reporter: watson1978@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- Test: {{{ $ ruby -v -e 'String.class_eval{ undef :length }' ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0] $ ruby19 -v -e 'String.class_eval{ undef :length }' ruby 1.9.2p136 (2010-12-25 revision 30365) [x86_64-darwin10.5.0] $ macruby -v -e 'String.class_eval{ undef :length }' MacRuby 0.9 (ruby 1.9.2) [universal-darwin10.0, x86_64] -e:1:in `<main>': cannot undefine method `length' because it is a native method (RuntimeError) }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1111> MacRuby <http://macruby.org/>

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Re: [MacRuby] #106: Syntax error with Variadic function
by MacRuby 13 Jan '11

13 Jan '11

#106: Syntax error with Variadic function ------------------------------+--------------------------------------------- Reporter: byblue@… | Owner: lsansonetti@… Type: defect | Status: closed Priority: blocker | Milestone: MacRuby 0.9 Component: MacRuby | Resolution: fixed Keywords: #reduction | ------------------------------+--------------------------------------------- Changes (by lsansonetti@…): * status: new => closed * resolution: => fixed * milestone: MacRuby 1.0 => MacRuby 0.9 Comment: I added specs as r5161. This ticket can now be closed! -- Ticket URL: <http://www.macruby.org/trac/ticket/106#comment:5> MacRuby <http://macruby.org/>

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[MacRuby] #1019: String#gsub performance
by MacRuby 13 Jan '11

13 Jan '11

#1019: String#gsub performance ----------------------------------+----------------------------------------- Reporter: yasuimao@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- String#gsub with block performance improved dramatically with r4964, but String#gsub with or without block is still about 4-5 times slower than that of Ruby 1.8.7. Test 1 - gsub {{{ 10.times do text = File.read("test.txt") text.gsub!(/\w+/,"test") end }}} Test 2 - gsub with block {{{ 10.times do text = File.read("test.txt") text.gsub!(/\w+/){|x| x.upcase} end }}} The original text is in English with 8154 words. Results - Test 1 (sec.) {{{ Ruby 1.8.7 0.126 0.144 0.136 MacRuby 0.8 nightly 0.760 0.830 0.855 }}} Results - Test 2 (sec.) {{{ Ruby 1.8.7 0.369 0.336 0.303 MacRuby 0.8 nightly 1.377 1.552 1.465 }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1019> MacRuby <http://macruby.org/>

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[MacRuby] #1077: Performance of String
by MacRuby 13 Jan '11

13 Jan '11

#1077: Performance of String ----------------------------------+----------------------------------------- Reporter: yasuimao@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- The performance of the following script improved dramatically with r4964, but the changes made on 12/17 seem to affect the performance again. '''Script''' {{{ freq = Hash.new(0) 10.times{File.read("test.txt").scan(/\w+/){|word| freq[word] += 1}} }}} '''File''': 1553 English words; times are all in seconds MacRuby 0.9 nightly 2010/12/17 {{{ 0.54 0.52 0.52 }}} MacRuby 0.9 nightly 2010/12/24 {{{ 34.42 34.55 34.50 }}} Ruby 1.8.7 {{{ 0.28 0.26 0.26 }}} I ran the script 4 times and the first one was dropped to eliminate the effect of MacRuby start-up time. My Mac is Mac mini C2D 2.0GHz. -- Ticket URL: <http://www.macruby.org/trac/ticket/1077> MacRuby <http://macruby.org/>

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[MacRuby] #1048: Performance of Hash with an Array as a key
by MacRuby 13 Jan '11

13 Jan '11

#1048: Performance of Hash with an Array as a key ----------------------------------+----------------------------------------- Reporter: yasuimao@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- I found another performance issue related to text processing using Hash. This little script is an attempt to count n-grams (n-words sequences) in text. The same script on Ruby 1.8.7 runs much faster and not affected by the number of array elements. '''Script''' {{{ n = 1 hash = Hash.new(0) words = File.open("test.txt").read.scan(/\w+/) (words.length - n).times do |i| hash[words[i..n+i]] += 1 end }}} I used a text file with about 8000 English words. I ran the test 3 times for each of 1 to 4 grams (1 to 4 array elements) to check that the results were consistent. Only the processing times of the block part are shown. [[BR]] '''Results''': MacRuby - hash with array as key (in sec.) {{{ word (n=0) 3.95 4.00 3.96 2-gram (n=1) 12.35 13.02 13.16 3-gram (n=2) 17.97 17.90 17.92 4-gram (n=3) 21.26 21.22 20.78 }}} '''Results''': Ruby 1.8.7 - hash with array as key (in sec.) {{{ word (n=0) 0.049 0.048 0.047 2-gram (n=1) 0.048 0.049 0.054 3-gram (n=2) 0.047 0.047 0.048 4-gram (n=3) 0.049 0.047 0.048 }}} [[BR]] To compare this with performance with String as a key, I joined the array and run the script. {{{ hash[words[i..n+i].join(" ")] += 1 }}} For the word count, I used this script. {{{ words.length.times do |i| hash[words[i]] += 1 end }}} '''Results''': MacRuby - hash with string as key (array joined) (in sec.) {{{ word (string) 0.030 0.029 0.027 2-gram 0.17 0.17 0.16 3-gram 0.18 0.18 0.19 4-gram 0.24 0.21 0.22 }}} '''Results''': Ruby 1.8.7 - hash with string as key (array joined) (in sec.) {{{ word (string) 0.0092 0.0091 0.0094 2-gram 0.045 0.041 0.039 3-gram 0.041 0.043 0.041 4-gram 0.048 0.048 0.049 }}} [[BR]] The second script ran much faster, but still MacRuby is approximately 2 to 3 times slower than Ruby 1.8.7. -- Ticket URL: <http://www.macruby.org/trac/ticket/1048> MacRuby <http://macruby.org/>

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[MacRuby] #1112: Allowing pointers to be created and initialised directly with an integer
by MacRuby 13 Jan '11

13 Jan '11

#1112: Allowing pointers to be created and initialised directly with an integer ----------------------------------------+----------------------------------- Reporter: dave.baldwin@… | Owner: lsansonetti@… Type: enhancement | Status: new Priority: minor | Milestone: Component: MacRuby | Keywords: ----------------------------------------+----------------------------------- In OpenGL some functions take pointers and these are easily handled via v = Pointer.new('f', 20) glVertexPointer(3, GL_FLOAT, 3, v) (the C prototype is void glVertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer); however in some cases this function has been overloaded so you pass in an integer as the last parameter. In C this is easy glVertexPointer(3, GL_FLOAT, 3, (void *) 12) This is a horrible bit of API design in OpenGL but allows graphics data to be stored in the graphics memory (in vertex buffer objects) instead of in host memory so gives a significant performance boost for large data sets. The MacRuby Pointer objects don't have any way of setting the pointer to a given value - understandable as this is a dangerous thing to do normally - so the only way to use vertex buffer objects directly from MacRuby is to create a small objective c stub along the lines: - (void) glVBOVertexPointer: (GLint) size type: (GLenum) type stride: (GLsizei) stride offset:(GLint) offset { glVertexPointer(size, type, stride, (void *) offset); } and to call this. An alternative way of handling this (not tested) may be to add a method on to Integer along the lines to_void_ptr to return the a void * pointer initialised to the integer value? OpenGL uses this idiom in several places and it is probably not alone. Dave. -- Ticket URL: <http://www.macruby.org/trac/ticket/1112> MacRuby <http://macruby.org/>

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[MacRuby] #1109: Installing a gem from disk fails
by MacRuby 11 Jan '11

11 Jan '11

#1109: Installing a gem from disk fails -------------------------------------+-------------------------------------- Reporter: eloy.de.enige@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: MacRuby 0.9 Component: MacRuby | Keywords: rubygems -------------------------------------+-------------------------------------- For example: {{{ % sudo macgem install pkg/mac_bacon-1.1.21.gem ERROR: While executing gem ... (Zlib::BufError) buffer error }}} Installing from a remote source, however, does work: {{{ % sudo macgem install mac_bacon Successfully installed mac_bacon-1.1.21 1 gem installed }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1109> MacRuby <http://macruby.org/>

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Re: [MacRuby] #766: macrake overrides /usr/bin/rake
by MacRuby 11 Jan '11

11 Jan '11

#766: macrake overrides /usr/bin/rake -----------------------------------+---------------------------------------- Reporter: kennylovrin@… | Owner: lsansonetti@… Type: defect | Status: closed Priority: blocker | Milestone: MacRuby 0.9 Component: MacRuby | Resolution: fixed Keywords: | -----------------------------------+---------------------------------------- Changes (by lsansonetti@…): * status: reopened => closed * resolution: => fixed * milestone: => MacRuby 0.9 Comment: Thanks Patrick. I tweaked the patch to be smaller and committed it as r5155. -- Ticket URL: <http://www.macruby.org/trac/ticket/766#comment:11> MacRuby <http://macruby.org/>

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[MacRuby] #1108: Can't inherit the Module.
by MacRuby 10 Jan '11

10 Jan '11

#1108: Can't inherit the Module. ----------------------------------+----------------------------------------- Reporter: watson1978@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- Test Script: {{{ #!ruby class T < Module attr_reader :value def initialize(x = 1234) @value = x end def read @value end end t = T.new(42) p t.read p t.value t = T.new p t.read p t.value }}} Result: {{{ $ ruby19 -v t.rb ruby 1.9.2p136 (2010-12-25 revision 30365) [x86_64-darwin10.5.0] 42 42 1234 1234 $ macruby -v t.rb MacRuby 0.9 (ruby 1.9.2) [universal-darwin10.0, x86_64] /Users/watson/tmp/t.rb:12:in `<main>': wrong number of arguments (1 for 0) (ArgumentError) }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1108> MacRuby <http://macruby.org/>

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Re: [MacRuby] #766: macrake overrides /usr/bin/rake
by MacRuby 10 Jan '11

10 Jan '11

#766: macrake overrides /usr/bin/rake -----------------------------------+---------------------------------------- Reporter: kennylovrin@… | Owner: lsansonetti@… Type: defect | Status: reopened Priority: blocker | Milestone: Component: MacRuby | Resolution: Keywords: | -----------------------------------+---------------------------------------- Comment(by lsansonetti@…): Oops! Good catch, looks like I forgot to back port this change. -- Ticket URL: <http://www.macruby.org/trac/ticket/766#comment:10> MacRuby <http://macruby.org/>

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