evanphx

<match path="project"> rubinius </match>

<formatter medium="irc">

  <lineLimit>1</lineLimit>
  <wrapWidth>150</wrapWidth>
  <widthLimit>150</widthLimit>
  <crunchWhitespace/>

  <format appliesTo="CommitToIRC">

evanphx

hoshi :: /var/log> 
Message from syslogd@hoshi at Fri Aug  1 10:02:17 2008 ...
hoshi kernel: [172392.427177] Uhhuh. NMI received for unknown reason 3c on CPU 0.

Message from syslogd@hoshi at Fri Aug  1 10:02:17 2008 ...
hoshi kernel: [172392.431038] Do you have a strange power saving mode enabled?

Message from syslogd@hoshi at Fri Aug  1 10:02:17 2008 ...
hoshi kernel: [172392.431038] Dazed and confused, but trying to continue

evanphx

sark :: git/rbx » rake 'compile_ruby[suck.rb]'
(in /Users/evanphx/git/rbx)
Compiling suck.rb
:push_nil                     [1, 0, 0]
[:set_local, 0]               [0, 1, 1]
:pop                          [-1, 1, 1]
[:push_local, 0]              [1, 0, 1]
[:send_method, 0]             [0, 1, 1]
:meta_push_0                  [1, 1, 1]
[:send_stack, 1, 1]           [-1, 2, 2]

evanphx

sark :: git/rbx » cat scratch/hello.rb
puts "hello world"

sark :: git/rbx » ./vm/jit-test scratch/hello.rbc
0x800800  push %ebp
0x800801  mov %esp, %ebp
0x800803  sub $0xc, %esp
0x800809  push %edi
0x80080a  push %esi
0x80080b  push %ebx

evanphx

Lessons Learned

Be Confident

Tests build confidence. Write 'em. They'll save your ass, and they'll let you take a chainsaw to your code without being afraid of unintended consequences.

Be Lazy

evanphx

require 'benchmark'
cm = def blah
  i = 0
  while i < 10
    j = 0
    while j < 20000000
      j += 1
    end
    i += 1
  end

evanphx

module Compiler::Plugins
  class StaticConstantSet < Compiler::Plugin
    register Compiler::Node::Call

    def self.run(compiler, call)
      if !call.object and
           call.method == :static and
           call.arguments.size == 1 and
           call.arguments.first.is? Compiler::Node::ConstSet
        cf = call.arguments.first

evanphx

def blah
  :works
end

[:broken].each do |blah|
  puts "setup"
end

p blah

evanphx

class TrySink

  def initialize(obj)
    @object = obj
  end

  undef class

  def method_missing(meth, *a)
    if @object.respond_to? meth

evanphx

struct closure {
  int a;
};

void show(int i);

typedef void (*block)(struct closure* data);

void block_code(struct closure* data) {
  data->a += 1;