Adding dtrace probes for insight

benchmark.js

@@ -0,0 +1,7 @@
+"use strict";
+
+const http = require("http"),
+	router = require("./index")();
+
+router.use("/", (req, res) => res.json("Hello World!"));
+http.createServer(router.route).listen(8000);

lib/woodland.js

@@ -4,16 +4,18 @@ const path = require("path"),
 	precise = require("precise"),
 	methods = http.METHODS,
 	Base = require(path.join(__dirname, "base.js")),
+	dtrace = require(path.join(__dirname, "dtrace.js")),
 	{all, clone, each, http2Normalize, http2Send, next, ms, params, parse, partial, pipeable, last, reduce, wrapped, writeHead} = require(path.join(__dirname, "utility.js")),
 	delimiter = ":";
 
 class Woodland extends Base {
-	constructor (defaultHeaders, cacheSize, http2, cacheTTL, dtrace) {
+	constructor (defaultHeaders, cacheSize, http2, cacheTTL, dtp) {
 		super();
 		this.blacklisted = new Set();
 		this.cache = fifo(cacheSize, cacheTTL);
 		this.defaultHeaders = Object.keys(defaultHeaders).map(key => [key.toLowerCase(), defaultHeaders[key]]);
-		this.dtp = dtrace === true ? dtrace("woodland") : null;
+		this.dtrace = dtp === true;
+		this.dtp = this.dtrace ? dtrace("woodland") : null;
 		this.http2 = http2;
 		this.permissions = fifo(cacheSize, cacheTTL);
 		this.methods = [];
@@ -329,7 +331,10 @@ class Woodland extends Base {
 
 			res.on("finish", () => {
 				if (this.dtrace) {
-					timer.stop();
+					if (timer.stopped.length === 0) {
+						timer.stop();
+					}
+
 					this.dtp.fire("route", () => [req.parsed.href, ms(timer.diff()), "finish"]);
 				}
 
@@ -340,7 +345,10 @@ class Woodland extends Base {
 				this.onclose(req, res);
 
 				if (this.dtrace) {
-					timer.stop();
+					if (timer.stopped.length === 0) {
+						timer.stop();
+					}
+
 					this.dtp.fire("route", () => [req.parsed.href, ms(timer.diff()), "close"]);
 				}
 

sample.js

@@ -1,5 +1,5 @@
 const http = require("http"),
-	router = require("./index")({defaultHeaders: {"Cache-Control": "no-cache", "Content-Type": "text/plain"}});
+	router = require("./index")({defaultHeaders: {"Cache-Control": "no-cache", "Content-Type": "text/plain"}, dtrace: true});
 
 router.use("/", (req, res) => res.send("Hello World!"));
 router.use("/", (req, res) => res.send("Make a GET request to retrieve the representation"), "options");