From a6017aa728c12c48faf758e6df3b3a1e2b704dad Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Sat, 11 Oct 2008 19:25:16 +0200
Subject: [PATCH] Add mean calculation in debug tools

Another simple performance counter...

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---
 src/misc.cpp   | 9 +++++++++
 src/misc.h     | 9 ++++++++-
 src/search.cpp | 6 ++++++
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/misc.cpp b/src/misc.cpp
index 07d58d63..8c2fc28a 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -51,6 +51,9 @@ int gettimeofday(struct timeval * tp, struct timezone * tzp);
 long dbg_cnt0 = 0;
 long dbg_cnt1 = 0;
 
+bool dbg_show_mean = false;
+bool dbg_show_hit_rate = false;
+
 
 ////
 //// Functions
@@ -63,6 +66,12 @@ void dbg_print_hit_rate() {
             << std::endl;
 }
 
+void dbg_print_mean() {
+
+  std::cout << "Total " << dbg_cnt0 << " Mean "
+            << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << std::endl;
+}
+
 /// engine_name() returns the full name of the current Glaurung version.
 /// This will be either "Glaurung YYMMDD" (where YYMMDD is the date when the
 /// program was compiled) or "Glaurung <version number>", depending on whether
diff --git a/src/misc.h b/src/misc.h
index a1c76e87..d3b555cb 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -61,7 +61,6 @@ extern int Bioskey();
 ////
 extern long dbg_cnt0;
 extern long dbg_cnt1;
-extern void dbg_print_hit_rate();
 
 inline void dbg_hit_on(bool b) { dbg_cnt0++; if (b) dbg_cnt1++; }
 inline void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
@@ -69,4 +68,12 @@ inline void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
 inline void dbg_before() { dbg_cnt0++; }
 inline void dbg_after() { dbg_cnt1++; }
 
+inline void dbg_mean_of(int v) { dbg_cnt0++; dbg_cnt1 += v; }
+
+extern void dbg_print_hit_rate();
+extern void dbg_print_mean();
+
+extern bool dbg_show_mean;
+extern bool dbg_show_hit_rate;
+
 #endif // !defined(MISC_H_INCLUDED)
diff --git a/src/search.cpp b/src/search.cpp
index 4b966f61..8279d157 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -2172,6 +2172,12 @@ namespace {
     {
         lastInfoTime = t;
         lock_grab(&IOLock);
+        if (dbg_show_mean)
+            dbg_print_mean();
+
+        if (dbg_show_hit_rate)
+            dbg_print_hit_rate();
+
         std::cout << "info nodes " << nodes_searched() << " nps " << nps()
                   << " time " << t << " hashfull " << TT.full() << std::endl;
         lock_release(&IOLock);
-- 
2.39.2