Warmup benchmarks

Reviewed-by: asquare

build.xml

@@ -64,6 +64,7 @@
 
         <property name="patches.dir" location="${basedir}/patches"/>
         <property name="test.dir" location="${basedir}/test"/>
+        <property name="benchmark.dir" location="${basedir}/benchmark"/>
         <property name="build.properties.file" location="${classes.dir}/build.properties"/>
         <property name="native.build.dir" value="${basedir}/out/${build.type}/obj.target/${product.name}/"/>
 
@@ -335,6 +336,8 @@
         <apply-diff src="test/simple" mod="${test.dir}/crypto" name="test-crypto.js"/>
         <apply-diff src="test/simple" mod="${test.dir}/crypto" name="test-crypto-binary-default.js"/>
         <apply-diff src="test/pummel" mod="${test.dir}/crypto" name="test-crypto-dh.js"/>
+        <!-- benchmark -->
+        <apply-diff src="benchmark" mod="${benchmark.dir}" name="common.js"/>
     </target>
 
     <!-- keep sorted and synchronized with diff-source-files -->
@@ -399,6 +402,8 @@
         <apply-patch-file target="${test.dir}/crypto" dir="test/crypto" name="test-crypto.js"/>
         <apply-patch-file target="${test.dir}/crypto" dir="test/crypto" name="test-crypto-binary-default.js"/>
         <apply-patch-file target="${test.dir}/crypto" dir="test/crypto" name="test-crypto-dh.js"/>
+        <!-- benchmark -->
+        <apply-patch-file target="${benchmark.dir}" dir="benchmark" name="common.js"/>
     </target>
 
     <target name="generate-policy-file" depends="init">

patches/benchmark/common.js.patch

@@ -0,0 +1,34 @@
+--- ../nodejs/benchmark/common.js	2013-09-05 16:07:32.462830000 -0700
++++ benchmark/common.js	2013-11-13 18:05:47.148644300 -0800
+@@ -1,6 +1,8 @@
+ var assert = require('assert');
+ var path = require('path');
+ var silent = +process.env.NODE_BENCH_SILENT;
++var started = false;
++var warmUp = true;
+ 
+ exports.PORT = process.env.PORT || 12346;
+ 
+@@ -21,9 +23,21 @@
+ }
+ 
+ function runBenchmarks() {
++  if (warmUp && !started) {
++    console.error("**** START WARMUP ****");
++    started = true;
++  }
+   var test = tests.shift();
+-  if (!test)
++  if (!test) {
++    if (warmUp) {
++      console.error("**** FINISH WARMUP ****");
++      warmUp = false;
++      started = false;
++      tests = fs.readdirSync(dir);
++      runBenchmarks();
++    }
+     return;
++  }
+ 
+   if (test.match(/^[\._]/))
+     return process.nextTick(runBenchmarks);