add a time keeping facility for debugging

1 files changed, 23 insertions, 0 deletions

diff --git a/stage1/PoorMansProfiler.scala b/stage1/PoorMansProfiler.scala
new file mode 100644
index 0000000..b7aa47d
--- /dev/null
+++ b/stage1/PoorMansProfiler.scala
@@ -0,0 +1,23 @@
+/*
+// temporary debugging tool
+package cbt
+import java.util.concurrent.ConcurrentHashMap
+import collection.JavaConversions._
+object PoorMansProfiler{
+  val entries = new ConcurrentHashMap[String, Long]
+  def profile[T](name: String)(code: => T): T = {
+    val before = System.currentTimeMillis
+    if(!(entries containsKey name)){
+      entries.put( name, 0 )
+    }
+    val res = code
+    entries.put( name, (entries get name) + (System.currentTimeMillis - before) )
+    res
+  }
+  def summary: String = {
+    "Profiling Summary:\n" + entries.toSeq.sortBy(_._2).map{
+      case (name, value) => name + ": " + (value / 1000.0)
+    }.mkString("\n")
+  }
+}
+*/
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