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@@ -11,6 +11,7 @@ module Merb
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     @@named_routes = {}
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     @@routes = []
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+    @@compiler_mutex = Mutex.new
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     cattr_accessor :routes, :named_routes
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     class << self
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@@ -52,13 +53,15 @@ module Merb
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       # ==== Returns
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       # String:: A routing lambda statement generated from the routes.
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       def compiled_statement
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-        @@compiled_statement = "def match(request)\n"
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-        @@compiled_statement << "  params = request.params\n"
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-        @@compiled_statement << "  cached_path = request.path\n  cached_method = request.method.to_s\n  "
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-        @@routes.each_with_index { |route, i| @@compiled_statement << route.compile(i == 0) }
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-        @@compiled_statement << "  else\n    [nil, {}]\n"
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-        @@compiled_statement << "  end\n"
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-        @@compiled_statement << "end"
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+        @@compiler_mutex.synchronize do
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+          @@compiled_statement = "def match(request)\n"
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+          @@compiled_statement << "  params = request.params\n"
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+          @@compiled_statement << "  cached_path = request.path\n  cached_method = request.method.to_s\n  "
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+          @@routes.each_with_index { |route, i| @@compiled_statement << route.compile(i == 0) }
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+          @@compiled_statement << "  else\n    [nil, {}]\n"
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+          @@compiled_statement << "  end\n"
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+          @@compiled_statement << "end"
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+        end
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       end
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       # Defines the match function for this class based on the

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@@ -1,6 +1,6 @@
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 require 'benchmark'
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-TIMES = (ARGV[0] || 100_000).to_i
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+TIMES = (ARGV[0] || 10_000).to_i
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 Benchmark.bmbm do |x|
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   x.report("instance_methods.include? == true") do