From e72b072d5333c87e2ca972f0d88dabfa0cedbec2 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Fri, 5 Mar 2010 15:31:21 -0800
Subject: [PATCH] Decouple timer from EventEmitter

---
 src/node.js       | 14 ++++++--------
 src/node_timer.cc | 42 ++++++++++++++++++++++++++++++++----------
 src/node_timer.h  |  7 ++++---
 3 files changed, 42 insertions(+), 21 deletions(-)

diff --git a/src/node.js b/src/node.js
index 12686e674c..afc70bf88f 100644
--- a/src/node.js
+++ b/src/node.js
@@ -246,35 +246,33 @@ function addTimerListener (callback) {
   // Special case the no param case to avoid the extra object creation.
   if (arguments.length > 2) {
     var args = Array.prototype.slice.call(arguments, 2);
-    timer.addListener("timeout", function(){
-      callback.apply(timer, args);
-    });
+    timer.callback = function () { callback.apply(timer, args); };
   } else {
-    timer.addListener("timeout", callback);
+    timer.callback = callback;
   }
 }
 
-GLOBAL.setTimeout = function (callback, after) {
+global.setTimeout = function (callback, after) {
   var timer = new process.Timer();
   addTimerListener.apply(timer, arguments);
   timer.start(after, 0);
   return timer;
 };
 
-GLOBAL.setInterval = function (callback, repeat) {
+global.setInterval = function (callback, repeat) {
   var timer = new process.Timer();
   addTimerListener.apply(timer, arguments);
   timer.start(repeat, repeat);
   return timer;
 };
 
-GLOBAL.clearTimeout = function (timer) {
+global.clearTimeout = function (timer) {
   if (timer instanceof process.Timer) {
     timer.stop();
   }
 };
 
-GLOBAL.clearInterval = GLOBAL.clearTimeout;
+global.clearInterval = global.clearTimeout;
 
 
 
diff --git a/src/node_timer.cc b/src/node_timer.cc
index 5d60126c8a..1fa470aad3 100644
--- a/src/node_timer.cc
+++ b/src/node_timer.cc
@@ -9,6 +9,7 @@ Persistent<FunctionTemplate> Timer::constructor_template;
 
 static Persistent<String> timeout_symbol;
 static Persistent<String> repeat_symbol;
+static Persistent<String> callback_symbol;
 
 void
 Timer::Initialize (Handle<Object> target)
@@ -17,12 +18,12 @@ Timer::Initialize (Handle<Object> target)
 
   Local<FunctionTemplate> t = FunctionTemplate::New(Timer::New);
   constructor_template = Persistent<FunctionTemplate>::New(t);
-  constructor_template->Inherit(EventEmitter::constructor_template);
   constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
   constructor_template->SetClassName(String::NewSymbol("Timer"));
 
   timeout_symbol = NODE_PSYMBOL("timeout");
   repeat_symbol = NODE_PSYMBOL("repeat");
+  callback_symbol = NODE_PSYMBOL("callback");
 
   NODE_SET_PROTOTYPE_METHOD(constructor_template, "start", Timer::Start);
   NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", Timer::Stop);
@@ -66,7 +67,23 @@ Timer::OnTimeout (EV_P_ ev_timer *watcher, int revents)
 
   assert(revents == EV_TIMEOUT);
 
-  timer->Emit(timeout_symbol, 0, NULL);
+  HandleScope scope;
+
+  Local<Value> callback_v = timer->handle_->Get(callback_symbol);
+  if (!callback_v->IsFunction()) {
+    timer->Stop();
+    return;
+  }
+
+  Local<Function> callback = Local<Function>::Cast(callback_v);
+
+  TryCatch try_catch;
+
+  callback->Call(timer->handle_, 0, NULL);
+
+  if (try_catch.HasCaught()) {
+    FatalException(try_catch);
+  }
 
   if (timer->watcher_.repeat == 0) timer->Unref();
 }
@@ -90,8 +107,8 @@ Timer::New (const Arguments& args)
 Handle<Value>
 Timer::Start (const Arguments& args)
 {
-  Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
   HandleScope scope;
+  Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
 
   if (args.Length() != 2)
     return ThrowException(String::New("Bad arguments"));
@@ -108,13 +125,18 @@ Timer::Start (const Arguments& args)
   return Undefined();
 }
 
-Handle<Value>
-Timer::Stop (const Arguments& args)
-{
+
+Handle<Value> Timer::Stop(const Arguments& args) {
+  HandleScope scope;
   Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
-  if (ev_is_active(&timer->watcher_)) {
-    ev_timer_stop(EV_DEFAULT_UC_ &timer->watcher_);
-    timer->Unref();
-  }
+  timer->Stop();
   return Undefined();
 }
+
+
+void Timer::Stop () {
+  if (watcher_.active) {
+    ev_timer_stop(EV_DEFAULT_UC_ &watcher_);
+    Unref();
+  }
+}
diff --git a/src/node_timer.h b/src/node_timer.h
index d662f9a0fa..0472fdb0d6 100644
--- a/src/node_timer.h
+++ b/src/node_timer.h
@@ -2,20 +2,20 @@
 #define node_timer_h
 
 #include <node.h>
-#include <node_events.h>
+#include <node_object_wrap.h>
 #include <v8.h>
 #include <ev.h>
 
 namespace node {
 
-class Timer : EventEmitter {
+class Timer : ObjectWrap {
  public:
   static void Initialize (v8::Handle<v8::Object> target);
 
  protected:
   static v8::Persistent<v8::FunctionTemplate> constructor_template;
 
-  Timer () : EventEmitter () { }
+  Timer () : ObjectWrap () { }
   ~Timer();
 
   static v8::Handle<v8::Value> New (const v8::Arguments& args);
@@ -26,6 +26,7 @@ class Timer : EventEmitter {
 
  private:
   static void OnTimeout (EV_P_ ev_timer *watcher, int revents);
+  void Stop ();
   ev_timer watcher_;
 };