December 2009 - MacRuby-devel - lists.macosforge.org

[MacRuby] #490: GCD Specs for Semaphore class
by MacRuby 10 Dec '09

10 Dec '09

#490: GCD Specs for Semaphore class ----------------------------------------+----------------------------------- Reporter: ernest.prabhakar@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: gcd ----------------------------------------+----------------------------------- - creation - signal and return value - wait and return value Not sure if they're 100% correct, but they seem to match the man page, so we should validate if we want divergent behavior http://developer.apple.com/Mac/library/documentation/Darwin/Reference/ManPa… -- Ticket URL: <http://www.macruby.org/trac/ticket/490> MacRuby <http://macruby.org/>

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[MacRuby] #492: Need GCD Specs for Sources
by MacRuby 10 Dec '09

10 Dec '09

#492: Need GCD Specs for Sources ----------------------------------------+----------------------------------- Reporter: ernest.prabhakar@… | Owner: lsansonetti@… Type: enhancement | Status: new Priority: major | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: ----------------------------------------+----------------------------------- I split these into a separate file, as they are fairly complex and I was crashing MacRuby when I tried to run them all at once. :-) -- Ticket URL: <http://www.macruby.org/trac/ticket/492> MacRuby <http://macruby.org/>

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[MacRuby] #496: spec/macruby/core/gcd_spec.rb should become a directory, one file per class
by MacRuby 10 Dec '09

10 Dec '09

#496: spec/macruby/core/gcd_spec.rb should become a directory, one file per class ----------------------------------------+----------------------------------- Reporter: ernest.prabhakar@… | Owner: ernest.prabhakar@… Type: defect | Status: new Priority: critical | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: ----------------------------------------+----------------------------------- GCD is complicated enough that the specs will be easier to manage and maintain with one file per class. http://www.macruby.org/trac/browser/MacRuby/trunk/spec/macruby/core/gcd_spe… I propose creating a "gcd" subdirectory inside spec/macruby/core and splitting the current spec into: queue_spec.rb group_spec.rb Then adding new files for the other classes and specs as they are written. -- Ticket URL: <http://www.macruby.org/trac/ticket/496> MacRuby <http://macruby.org/>

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Re: [MacRuby-devel] Looking for info on MacRuby's JIT
by ravenex 10 Dec '09

10 Dec '09

@Ernie, Thank you for the links. Actually I'm have read MRI 1.9's code base before, so I was able to find quite a few "entry points" that I needed to get up to speed with MacRuby. The problem is I'm not familiar with the Objective-C runtime, and that's big blocker for me, since MacRuby is tightly integrated with it. @Vincent > There's currently no documentation on the inner workings of MacRuby. > Any help is welcome ;-) > Most knowledge is in the code or Laurent's head (and a bit in other > commiters' head ;-)). Feel free to ask questions on the ML, though > answers may take some time. Thank you very much for the reply. I'll see if I can understand enough of what's going on, before I can make myself useful :-) >> The thing I find very confusing is that in vm.cpp, RoxorCore::RoxorCore(), >> there's a call to ee->DisableLazyCompilation(). This disables LLVM JIT's >> lazy compilation. > Yes I added it to be sure that LLVM does not use its lazy compilation > mechanism (that is know not to work correctly in multiple threads). > It's not needed in MacRuby because we do it our own way. I saw the same changes have been applied to Unladen Swallow on LLVMdev. Looks like it's common for language implementations to build their own lazy mechanisms when using LLVM for its JIT. > In JIT mode, the conversion of Ruby code to LLVM code (or more > strictly speaking LLVM C++ objects) is done as soon as a Ruby script > is loaded. But LLVM's optimization phase and native code generation of > a function is only done when this function is called. > The place where it's done is hard to find though: it's done using a > functionality of the Objective-C runtime: we define the > "resolveClassMethod:" and "resolveInstanceMethod:" on NSObject (in > vm.cpp, in Init_PreVM) > http://developer.apple.com/mac/library/documentation/cocoa/reference/Founda…: > There are also a few other cases where we compile a method even if > it's not called, for instance when a method is aliased or a module > included. So that's where...yes, I got it! > For blocks it's done in dispatcher.cpp, in rb_vm_prepare_block. That's > a function called just before any block is given to a function. > In AOT mode, of course, we always compile and optimize everything > (blocks and methods) beforehand. Just to make sure I got it right: MacRuby's VM is called Roxor. Currently in the code in trunk doesn't use any interpreter mode; Ruby code is always compiled before is can be run. Compilation can be done in either JIT or AOT mode. (I thought there was an experimental branch that actually used LLVM's interpreter to speed up eval, what happened to that?) JIT mode is the default mode. A translation unit is a Ruby source file. As a Ruby source file gets loaded, it's first parsed by a modified parser taken from MRI 1.9, and turned into NODE*, pretty much the same as the original Ruby AST. Then, RoxorCompiler will compile AST into LLVM IR, which is kept and JITted later on demand. Because in MacRuby all Ruby classes inherit from NSObject, MacRuby uses mechanism from the Objective-C runtime to drive the lazy compilation behavior: original implementations of NSObject's resolveClassMethod: and resolveInstanceMethod: are replaced with MacRuby's own ones, which act as a hook and call the JIT when method implementations are being resolved. For normal Ruby methods, resolveClassMethod_imp() and resolveInstanceMethod_imp() both call RoxorCore::resolve_method(), which calls RoxorCore::resolve_methods(), which calls RoxorCore::resolve_method(), and that'll call RoxorCore::compile() which compiles LLVM IR into native code. In AOT mode, Ruby code gets parsed in Ruby AST, compiled into LLVM IR by RoxorAOTCompiler, and then the LLVM bitcode is dumped to a temporary file. The bitcode is then translated into assembly by llc, then assembled by invoking gcc, and then optionally linked with other stuff. I'll continue reading the source for now... Thank you all, Raven

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RubyInline
by Ernest N. Prabhakar, Ph.D. 10 Dec '09

10 Dec '09

This would be a fun project for someone to port to MacRuby / Clang. :-) http://www.zenspider.com/ZSS/Products/RubyInline/

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mangled range param in NSString#getLineStart:end:contentsEnd:forRange:
by Michael Johnston 09 Dec '09

09 Dec '09

I'm having trouble with the NSString method getLineStart:end:contentsEnd:forRange:. The range param at the end gets mangled. First of all, the ordinary syntax can't be used because "end" is a keyword, so I'm using the hash syntax. I added cover methods to NSString to see what was happening. I made two cover methods, one with the same signature as getLineStart:end:contentsEnd:forRange: and one with the range param first: - (void)getLineStart2:(NSUInteger *)startIndex end:(NSUInteger *)lineEndIndex contentsEnd:(NSUInteger *)contentsEndIndex forRange: (NSRange)aRange { NSLog( @"getLineStartForRange startIndex: %d lineEndIndex: %d contentsEndIndex: %d range: %@", *startIndex, *lineEndIndex, *contentsEndIndex, NSStringFromRange(aRange)); [self getLineStart: startIndex end: lineEndIndex contentsEnd: contentsEndIndex forRange: aRange]; } - (void)getLineStart3:(NSRange)aRange end:(NSUInteger *)lineEndIndex contentsEnd:(NSUInteger *)contentsEndIndex forIndex:(NSUInteger *)startIndex { NSLog( @"getLineStartForRange startIndex: %d lineEndIndex: %d contentsEndIndex: %d range: %@", *startIndex, *lineEndIndex, *contentsEndIndex, NSStringFromRange(aRange)); [self getLineStart: startIndex end: lineEndIndex contentsEnd: contentsEndIndex forRange: aRange]; } When calling them, getLineStart3 with the range param as the first param works fine, but getLineStart2 mangles the range: endix = Pointer.new(:ulong_long) conix = Pointer.new(:ulong_long) ix = Pointer.new(:ulong_long) ix[0] = 5 conix[0] = 6 endix[0] = 7 puts "selectedRange: #{selectedRange.inspect}" @diagramCode.getLineStart3(selectedRange, :end => endix, :contentsEnd => conix, :forIndex => ix) puts "try old way" ix[0] = 5 conix[0] = 6 endix[0] = 7 @diagramCode.getLineStart2(ix, :end => endix, :contentsEnd => conix, :forRange => selectedRange) puts "ix: #{ix} endix: #{endix.inspect} conix: #{conix.inspect}" selectedRange: #<NSRange location=3 length=0> 2009-12-09 14:22:11.487 seeqr[11372:10b] getLineStart3 startIndex: 5 lineEndIndex: 7 contentsEndIndex: 6 range: {3, 0} try old way 2009-12-09 14:22:11.489 seeqr[11372:10b] getLineStart2 startIndex: 5 lineEndIndex: 7 contentsEndIndex: 6 range: {0, 4294995796} 2009-12-09 14:22:11.490 seeqr[11372:10b] *** -[NSBigMutableString _getBlockStart:end:contentsEnd:forRange:stopAtLineSeparators:]: Range or index out of bounds Am I missing something obvious? Thanks, Michael Johnston lastobelus(a)mac.com

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Build Report on Mac OS X 10.5 Intel
by Brennan Leathers 09 Dec '09

09 Dec '09

Just wanted to pass along a succesful build report using the SVN source on Mac OS X 10.5. The spec tests had three failure and an error, so I'm including those. Successful Build on 2.4 Ghz Intel Core Duo with 4 GB 800 mhz DDR2 SDRAM Mac OS X 10.5.8 Files: 462 Classes: 1288 Modules: 532 Methods: 5501 Elapsed: 299.8s 1) Pointer, through #[] and #[]= can assign and retrieve CF type objects ERROR NoMethodError: undefined method `CFURLResourceIsReachable' for #<NSObject:0x80048d740> 2) Kernel#taint has no effect on immediate values FAILED Expected true to be false 3) Process.initgroups initializes the supplemental group access list FAILED Expected Errno::EPERM but got Errno::ESPIPE (Illegal seek) 4) String#dump includes .force_encoding(name) if the encoding isn't ASCII compatiable FAILED Expected "\"v\"" to equal "\"\\bv\".force_encoding(\"UTF-16BE\")" Finished in 241.158209 seconds 2469 files, 9616 examples, 28900 expectations, 3 failures, 1 error rake aborted! Command failed with status (1): [./mspec/bin/mspec ci -B ./spec/macruby.msp...] ./miniruby -I./lib bench.rb user system total real 10 fib(30) 0.260000 0.000000 0.260000 ( 0.259881) 10 fib(35) 2.770000 0.010000 2.780000 ( 2.796741) tak 0.230000 0.000000 0.230000 ( 0.234308) tarai 0.180000 0.000000 0.180000 ( 0.180640) ackermann 0.160000 0.000000 0.160000 ( 0.166290) 10000000 times loop 0.130000 0.000000 0.130000 ( 0.131922) 30000000 times loop 1.290000 0.010000 1.300000 ( 1.311200) 10000000 while loop 0.090000 0.000000 0.090000 ( 0.089315) 60000000 while loop 0.530000 0.000000 0.530000 ( 0.532445) 30000000 msg w/ 0 arg 1.000000 0.000000 1.000000 ( 1.013336) 30000000 msg w/ 1 arg 1.380000 0.010000 1.390000 ( 1.398315) 10000000 super w/ 0 arg 0.800000 0.000000 0.800000 ( 0.818624) 10000000 super w/ 1 arg 1.210000 0.010000 1.220000 ( 1.231315) 10000000 #send 0.400000 0.000000 0.400000 ( 0.404552) 30000000 tail calls 0.250000 0.000000 0.250000 ( 0.257092) 10000000 ivar read 0.180000 0.000000 0.180000 ( 0.179083) 30000000 ivar read 0.470000 0.000000 0.470000 ( 0.473808) 10000000 ivar write 0.200000 0.000000 0.200000 ( 0.196880) 30000000 ivar write 0.560000 0.000000 0.560000 ( 0.567780) 30000000 const 0.510000 0.000000 0.510000 ( 0.505812) 30000000 yield 1.270000 0.000000 1.270000 ( 1.277385) 30000000 msg w/ block+yield 5.470000 0.030000 5.500000 ( 5.562125) 30000000 Proc#call 1.800000 0.010000 1.810000 ( 1.819076) 30000000 dvar write 1.220000 0.000000 1.220000 ( 1.240829) 1000 eval 1.080000 0.030000 1.110000 ( 1.087349) 30000000 binding-var write 0.290000 0.000000 0.290000 ( 0.294537) 30000000 while break 0.250000 0.000000 0.250000 ( 0.257960) 10000000 block break 1.930000 0.010000 1.940000 ( 1.950674) 30000000 while next 0.270000 0.000000 0.270000 ( 0.267866) 10000000 block next 1.910000 0.010000 1.920000 ( 1.927441) 60000000 begin w/o exception 0.530000 0.000000 0.530000 ( 0.534442) 60000000 ensure w/o exception 0.830000 0.000000 0.830000 ( 0.839624) 50000 raise 89.750000 1.620000 91.370000 ( 49.578480) 3000000 Method#call w/ 0 arg 0.360000 0.000000 0.360000 ( 0.332284) 3000000 Method#call w/ 1 arg 0.360000 0.000000 0.360000 ( 0.360061)

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Ruby Draft Specification
by Conrad Taylor 09 Dec '09

09 Dec '09

Hi ALL, you may find the following link of interest: http://ruby-std.netlab.jp -Conrad

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[MacRuby] #494: gsub with regexp is currently broken
by MacRuby 09 Dec '09

09 Dec '09

#494: gsub with regexp is currently broken -------------------------------------+-------------------------------------- Reporter: mattaimonetti@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: -------------------------------------+-------------------------------------- {{{ >> "first_name".gsub(/_[a-z]/, "\1") => "first\x01ame" }}} {{{ $ macruby -e 'p "first_name".gsub(/_[a-z]/, "\1")' "first\x01ame" }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/494> MacRuby <http://macruby.org/>

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Xcode Integration
by Brad Hutchins 09 Dec '09

09 Dec '09

Will MacRuby eventually be full integrated into Xcode. More exactly I am wondering about "Instruments" and other possible benchmarking tests to see if its speed would be comparable (not exact as fast as straight ObjC) but in the ball park. I know it will be used GCD, which I am very excited about. Brad

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