Add profile window around socket on_read.

src/net.h

@@ -55,10 +55,12 @@ private:
 
   static void on_read (oi_socket *s, const void *buf, size_t len) {
     Connection *connection = static_cast<Connection*> (s->data);
+    v8::V8::ResumeProfiler();
     if (len == 0)
       connection->OnEOF();
     else
       connection->OnReceive(buf, len);
+    v8::V8::PauseProfiler();
   }
 
   static void on_drain (oi_socket *s) {

src/node.cc

@@ -248,6 +248,8 @@ main (int argc, char *argv[])
 
   Local<Object> g = Context::GetCurrent()->Global();
 
+  V8::PauseProfiler(); // to be resumed in Connection::on_read
+
   Local<Object> node = Object::New();
   g->Set(String::New("node"), node);