1 files changed, 35 insertions, 0 deletions
diff --git a/railties/lib/rails/rubyprof_ext.rb b/railties/lib/rails/rubyprof_ext.rb
new file mode 100644
index 0000000000..f6e90357ce
--- /dev/null
+++ b/railties/lib/rails/rubyprof_ext.rb
@@ -0,0 +1,35 @@
+require 'prof'
+
+module Prof #:nodoc:
+  # Adapted from Shugo Maeda's unprof.rb
+  def self.print_profile(results, io = $stderr)
+    total = results.detect { |i|
+      i.method_class.nil? && i.method_id == :"#toplevel"
+    }.total_time
+    total = 0.001 if total < 0.001
+
+    io.puts "  %%   cumulative   self              self     total"
+    io.puts " time   seconds   seconds    calls  ms/call  ms/call  name"
+
+    sum = 0.0
+    for r in results
+      sum += r.self_time
+
+      name =  if r.method_class.nil?
+                r.method_id.to_s
+              elsif r.method_class.is_a?(Class)
+                "#{r.method_class}##{r.method_id}"
+              else
+                "#{r.method_class}.#{r.method_id}"
+              end
+      io.printf "%6.2f %8.3f  %8.3f %8d %8.2f %8.2f  %s\n",
+        r.self_time / total * 100,
+        sum,
+        r.self_time,
+        r.count,
+        r.self_time * 1000 / r.count,
+        r.total_time * 1000 / r.count,
+        name
+    end
+  end
+end