process.loopTime and loopDate

0001-NEW-process.loopTime.patch

From cdec69e42bdd698947102ec07a5705d5088d9a92 Mon Sep 17 00:00:00 2001
From: Jonas Pfenniger <jonas@stvs.ch>
Date: Tue, 5 Oct 2010 10:01:35 +0200
Subject: [PATCH 1/2] NEW: process.loopTime

This new variable contains the timestamp at the start of the grand loop.

On first iteration, it will hold the timestamp at boot time.
---
 src/node.cc |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/src/node.cc b/src/node.cc
index 004fa99..cb844d4 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -68,6 +68,8 @@ static Persistent<String> listeners_symbol;
 static Persistent<String> uncaught_exception_symbol;
 static Persistent<String> emit_symbol;
 
+static Persistent<String> loop_time_symbol;
+
 static int option_end_index = 0;
 static bool use_debug_agent = false;
 static bool debug_wait_connect = false;
@@ -181,6 +183,11 @@ static void Spin(EV_P_ ev_idle *watcher, int revents) {
 }
 
 
+static void UpdateLoopTime(void) {
+  HandleScope scope;
+  process->Set(loop_time_symbol, Number::New((uint64_t)(ev_now(EV_DEFAULT_UC) * 1000)));
+}
+
 static void Tick(void) {
   // Avoid entering a V8 scope.
   if (!need_tick_cb) return;
@@ -220,6 +227,7 @@ static void PrepareTick(EV_P_ ev_prepare *watcher, int revents) {
 static void CheckTick(EV_P_ ev_check *watcher, int revents) {
   assert(watcher == &check_tick_watcher);
   assert(revents == EV_CHECK);
+  UpdateLoopTime();
   Tick();
 }
 
@@ -1545,11 +1553,15 @@ static void ProcessTitleSetter(Local<String> property,
 static void Load(int argc, char *argv[]) {
   HandleScope scope;
 
+  // some constants
+  loop_time_symbol = NODE_PSYMBOL("loopTime");
+
   Local<FunctionTemplate> process_template = FunctionTemplate::New();
   node::EventEmitter::Initialize(process_template);
 
   process = Persistent<Object>::New(process_template->GetFunction()->NewInstance());
 
+  UpdateLoopTime();
 
   process->SetAccessor(String::New("title"),
                        ProcessTitleGetter,
-- 
1.7.0.4

0002-NEW-process.loopDate.patch

From bd994d1aab7821b8e977ba48ac21305e24064e42 Mon Sep 17 00:00:00 2001
From: Jonas Pfenniger <jonas@stvs.ch>
Date: Tue, 5 Oct 2010 10:44:14 +0200
Subject: [PATCH 2/2] NEW: process.loopDate()

Small utility function that transforms process.loopTime into a Date object.
---
 src/node.js |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/node.js b/src/node.js
index 7d177eb..f3763e6 100644
--- a/src/node.js
+++ b/src/node.js
@@ -29,6 +29,21 @@ process.assert = function (x, msg) {
 
 var writeError = process.binding('stdio').writeError;
 
+// loopDate()
+
+var cached_ts, cached_date;
+process.loopDate = function () {
+  var ts = process.loopTime;
+
+  if (cached_ts != ts) {
+    cached_date = new Date();
+    cached_date.setTime(ts);
+    cached_ts = ts;
+  }
+
+  return cached_date;
+}
+
 // nextTick()
 
 var nextTickQueue = [];
-- 
1.7.0.4