From c9673e08b3ca9230c492596ecb805210c49265f7 Mon Sep 17 00:00:00 2001
From: Frank Celler <frank@arangodb.com>
Date: Wed, 8 Aug 2012 15:33:11 +0200
Subject: [PATCH] added internal.wait

---
 lib/V8/v8-utils.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/lib/V8/v8-utils.cpp b/lib/V8/v8-utils.cpp
index 6f1bbcbb7a..b270ff036a 100644
--- a/lib/V8/v8-utils.cpp
+++ b/lib/V8/v8-utils.cpp
@@ -1103,6 +1103,38 @@ static v8::Handle<v8::Value> JS_Time (v8::Arguments const& argv) {
   return scope.Close(v8::Number::New(TRI_microtime()));
 }
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief returns the current time
+///
+/// @FUN{internal.wait(<seconds>)}
+///
+/// Wait for <seconds>, call the garbage collection.
+////////////////////////////////////////////////////////////////////////////////
+
+static v8::Handle<v8::Value> JS_Wait (v8::Arguments const& argv) {
+  v8::HandleScope scope;
+
+  // extract arguments
+  if (argv.Length() != 1) {
+    return scope.Close(v8::ThrowException(v8::String::New("usage: wait(<seconds>)")));
+  }
+
+  double n = TRI_ObjectToDouble(argv[0]);
+  double until = TRI_microtime() + n;
+
+  while(! v8::V8::IdleNotification()) {
+  }
+
+  while (TRI_microtime() < until) {
+    while(! v8::V8::IdleNotification()) {
+    }
+
+    usleep(100);
+  }
+
+  return scope.Close(v8::Undefined());
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @}
 ////////////////////////////////////////////////////////////////////////////////
@@ -1506,6 +1538,10 @@ void TRI_InitV8Utils (v8::Handle<v8::Context> context, string const& path) {
                          v8::FunctionTemplate::New(JS_Time)->GetFunction(),
                          v8::ReadOnly);
 
+  context->Global()->Set(v8::String::New("SYS_WAIT"),
+                         v8::FunctionTemplate::New(JS_Wait)->GetFunction(),
+                         v8::ReadOnly);
+
   // .............................................................................
   // create the global variables
   // .............................................................................