From: Marco Costalba <mcostalba@gmail.com>
Date: Mon, 16 Apr 2012 12:19:22 +0000 (+0200)
Subject: Improved cutoff check when reparenting
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=5392007a249644475da6cbb92de87502d982fc0d;ds=sidebyside

Improved cutoff check when reparenting

Check for a cutoff occurred also high in
the tree and not only at current split
point.

This avoids some more wasted reparenting.

No functional chnage.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index 08a157c2..61ac9a6a 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1871,7 +1871,7 @@ void Thread::idle_loop(SplitPoint* sp_master) {
               // where we are available as a possible slave.
               if (    this->is_available_to(th)
                   &&  spCnt > 0
-                  && !latest->cutoff
+                  && !th->cutoff_occurred()
                   &&  latest->slavesMask == latest->allSlavesMask
                   &&  more_than_one(latest->allSlavesMask))
               {
@@ -1882,7 +1882,7 @@ void Thread::idle_loop(SplitPoint* sp_master) {
                   // of a race storm here !
                   if (    this->is_available_to(th)
                       &&  spCnt == th->splitPointsCnt
-                      && !latest->cutoff
+                      && !th->cutoff_occurred()
                       &&  latest->slavesMask == latest->allSlavesMask
                       &&  more_than_one(latest->allSlavesMask))
                   {