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@@ -262,7 +262,12 @@ private
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       require 'dispatcher'
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     end
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     require_dependency 'application'
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-		if GC.copy_on_write_friendly?
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+		
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+		# - No point in preloading the application sources if the garbage collector
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+		#   isn't copy-on-write friendly.
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+		# - Rails >= 2.2 already preloads application sources by default, so no need
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+		#   to do that again.
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+		if GC.copy_on_write_friendly? && !::Rails::Initializer.respond_to?(:load_application_classes)
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       Dir.glob('app/{models,controllers,helpers}/*.rb').each do |file|
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         require_dependency normalize_path(file)
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       end