From 2e856f5260b1edfb33e97b05efca46a7007b0f00 Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Fri, 2 Nov 2012 22:07:28 +0000
Subject: [PATCH] Added tictoc_getNode function to timing to retrieve a node to
 access its times programmatically

---
 gtsam/base/timing.h | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/gtsam/base/timing.h b/gtsam/base/timing.h
index 949ed187e..d9ead33dd 100644
--- a/gtsam/base/timing.h
+++ b/gtsam/base/timing.h
@@ -94,20 +94,11 @@ namespace gtsam {
     extern boost::weak_ptr<TimingOutline> timingCurrent;
   }
 
-inline void tictoc_finishedIteration_() {
-  internal::timingRoot->finishedIteration();
-}
-
-inline void tictoc_print_() {
-  internal::timingRoot->print();
-}
-
-/* print mean and standard deviation */
-inline void tictoc_print2_() {
-  internal::timingRoot->print2();
-}
-
-// Tic and toc functions using a string label
+// Tic and toc functions that are always active (whether or not ENABLE_TIMING is defined)
+// There is a trick being used here to achieve near-zero runtime overhead, in that a
+// static variable is created for each tic/toc statement storing an integer ID, but the
+// integer ID is only looked up by string once when the static variable is initialized
+// as the program starts.
 #define gttic_(label) \
   static const size_t label##_id_tic = ::gtsam::internal::getTicTocID(#label); \
   ::gtsam::internal::AutoTicToc label##_obj = ::gtsam::internal::AutoTicToc(label##_id_tic, #label)
@@ -119,6 +110,17 @@ inline void tictoc_print2_() {
 #define longtoc_(label) \
   static const size_t label##_id_toc = ::gtsam::internal::getTicTocID(#label); \
   ::gtsam::internal::tocInternal(label##_id_toc, #label)
+inline void tictoc_finishedIteration_() {
+  internal::timingRoot->finishedIteration(); }
+inline void tictoc_print_() {
+  internal::timingRoot->print(); }
+/* print mean and standard deviation */
+inline void tictoc_print2_() {
+  internal::timingRoot->print2(); }
+#define tictoc_getNode(variable, label) \
+  static const size_t label##_id_getnode = ::gtsam::internal::getTicTocID(#label); \
+  const boost::shared_ptr<const internal::TimingOutline> variable = \
+  internal::timingCurrent.lock()->child(label##_id_getnode, #label, internal::timingCurrent);
 
 #ifdef ENABLE_TIMING
 #define gttic(label) gttic_(label)