Ruby Buzz Forum - Ruby 1.9.1 RDoc No Memory Error

When running:

gem install wxruby-ruby19

I got the following RDoc error:

Successfully installed wxruby-ruby19-2.0.1-x86-mingw32
1 gem installed
Installing ri documentation for wxruby-ruby19-2.0.1-x86-mingw32...
Updating class cache with 1663 classes...
Installing RDoc documentation for wxruby-ruby19-2.0.1-x86-mingw32...
c:/ruby19/lib/ruby/1.9.1/rdoc/parser.rb:73:in `each': failed to allocate memory (NoMemoryError)
        from c:/ruby19/lib/ruby/1.9.1/rdoc/parser.rb:73:in `grep'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/parser.rb:73:in `binary?'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/parser.rb:90:in `can_parse'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:157:in `block in normalized_file_list'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:150:in `each'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:150:in `normalized_file_list'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:185:in `list_files_in_directory'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:166:in `block in normalized_file_list'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:150:in `each'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:150:in `normalized_file_list'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:197:in `parse_files'
        from c:/ruby19/lib/ruby/1.9.1/rdoc/rdoc.rb:257:in `document'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/doc_manager.rb:177:in `run_rdoc'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/doc_manager.rb:137:in `install_rdoc'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/doc_manager.rb:123:in `generate_rdoc'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/commands/install_command.rb:152:in `block in execute'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/commands/install_command.rb:151:in `each'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/commands/install_command.rb:151:in `execute'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/command.rb:257:in `invoke'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/command_manager.rb:132:in `process_args'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/command_manager.rb:102:in `run'
        from C:/ruby19/lib/ruby/gems/1.9.1/gems/gems/rubygems-update-1.3.5/lib/rubygems/gem_runner.rb:58:in `run'
        from c:/ruby19/bin/gem:21:in `'

For a large gem, RDoc has a loop that begins to chew up available memory. Ruby's garbage collection utility (GC) can be used to fix this. To do so edit Ruby's rdoc.rb by inserting:

GC.start

somewhere in the "when directory" switch (see my hacked rdoc.rb). This will force garbage collection before calling a memory intensive step in the loop. I was able to install the wxruby plug-in successfully this way.


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