X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=e93c5045578193a5e493e1000e34ae8eb7990518;hp=11dcdb34f13840a1b8ff43a7b08df4273fe972f9;hb=df6cb446eaf21;hpb=44236f4ed9844598e1cb065937c3770a938964b2

diff --git a/src/search.cpp b/src/search.cpp
index 11dcdb34..e93c5045 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -277,13 +277,13 @@ void MainThread::search() {
   // the UCI protocol states that we shouldn't print the best move before the
   // GUI sends a "stop" or "ponderhit" command. We therefore simply wait here
   // until the GUI sends one of those commands (which also raises Threads.stop).
-  if (!Threads.stop && (Limits.ponder || Limits.infinite))
-  {
-      Threads.stopOnPonderhit = true;
-      wait(Threads.stop);
-  }
+  Threads.stopOnPonderhit = true;
+
+  while (!Threads.stop && (Threads.ponder || Limits.infinite))
+  {} // Busy wait for a stop or a ponder reset
 
-  // Stop the threads if not already stopped
+  // Stop the threads if not already stopped (also raise the stop if
+  // "ponderhit" just reset Threads.ponder).
   Threads.stop = true;
 
   // Wait until all threads have finished
@@ -341,7 +341,6 @@ void Thread::search() {
 
   bestValue = delta = alpha = -VALUE_INFINITE;
   beta = VALUE_INFINITE;
-  completedDepth = DEPTH_ZERO;
 
   if (mainThread)
   {
@@ -499,7 +498,7 @@ void Thread::search() {
               {
                   // If we are allowed to ponder do not stop the search now but
                   // keep pondering until the GUI sends "ponderhit" or "stop".
-                  if (Limits.ponder)
+                  if (Threads.ponder)
                       Threads.stopOnPonderhit = true;
                   else
                       Threads.stop = true;
@@ -1489,7 +1488,7 @@ moves_loop: // When in check search starts from here
     }
 
     // An engine may not stop pondering until told so by the GUI
-    if (Limits.ponder)
+    if (Threads.ponder)
         return;
 
     if (   (Limits.use_time_management() && elapsed > Time.maximum() - 10)