From 798b1b3431ccf345a93bd01413a64d272e530c6c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 23 Oct 2012 18:42:46 +0000
Subject: -add option to make expensive heap stat gathering optional

---
 configure.ac                    | 9 +++++++++
 src/statistics/statistics_api.c | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/configure.ac b/configure.ac
index 28a23f8f0..3caaf253a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -999,6 +999,15 @@ AC_ARG_ENABLE([experimental],
 AC_MSG_RESULT($enable_experimental)
 AM_CONDITIONAL([HAVE_EXPERIMENTAL], [test "x$enable_experimental" = "xyes"])
 
+# should memory statistics be kept (very expensive CPU-wise!)
+AC_MSG_CHECKING(whether to create expensive statistics on memory use)
+AC_ARG_ENABLE([heapstats],
+   [AS_HELP_STRING([--enable-heapstats], [enable expensive heap statistics])],
+   [enable_heapstats=1],
+   [enable_heapstats=0])
+AC_MSG_RESULT($enable_heapstats)
+AC_DEFINE_UNQUOTED([ENABLE_HEAP_STATISTICS],$enable_heapstats,[enable expensive heap statistics])
+
 # should code be enabled that works around missing OS functionality on Windows?
 # used for test cases
 if test $build_target = "mingw"
diff --git a/src/statistics/statistics_api.c b/src/statistics/statistics_api.c
index 79d9604c7..0f4149ead 100644
--- a/src/statistics/statistics_api.c
+++ b/src/statistics/statistics_api.c
@@ -271,6 +271,7 @@ struct GNUNET_STATISTICS_Handle
 static void
 update_memory_statistics (struct GNUNET_STATISTICS_Handle *h)
 {
+#if ENABLE_HEAP_STATISTICS
   uint64_t current_heap_size = 0;
   uint64_t current_rss = 0;
 
@@ -304,6 +305,7 @@ update_memory_statistics (struct GNUNET_STATISTICS_Handle *h)
     h->peak_rss = current_rss;
     GNUNET_STATISTICS_set (h, "# peak resident set size", current_rss, GNUNET_NO);
   }
+#endif
 }
 
 
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