1 files changed, 44 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/resolver/stats.rb b/jni/ruby/lib/rubygems/resolver/stats.rb
new file mode 100644
index 0000000..c31e5be
--- /dev/null
+++ b/jni/ruby/lib/rubygems/resolver/stats.rb
@@ -0,0 +1,44 @@
+class Gem::Resolver::Stats
+  def initialize
+    @max_depth = 0
+    @max_requirements = 0
+    @requirements = 0
+    @backtracking = 0
+    @iterations = 0
+  end
+
+  def record_depth(stack)
+    if stack.size > @max_depth
+      @max_depth = stack.size
+    end
+  end
+
+  def record_requirements(reqs)
+    if reqs.size > @max_requirements
+      @max_requirements = reqs.size
+    end
+  end
+
+  def requirement!
+    @requirements += 1
+  end
+
+  def backtracking!
+    @backtracking += 1
+  end
+
+  def iteration!
+    @iterations += 1
+  end
+
+  PATTERN = "%20s: %d\n"
+
+  def display
+    $stdout.puts "=== Resolver Statistics ==="
+    $stdout.printf PATTERN, "Max Depth", @max_depth
+    $stdout.printf PATTERN, "Total Requirements", @requirements
+    $stdout.printf PATTERN, "Max Requirements", @max_requirements
+    $stdout.printf PATTERN, "Backtracking #", @backtracking
+    $stdout.printf PATTERN, "Iteration #", @iterations
+  end
+end