X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.cpp;h=16bda2809147f9d299d9b425ae8d00d9997ff071;hp=8269dcf3d50029d2e4e355a8da8c345b48ddee80;hb=ac7339877b3e083b5dd93f34ec79779d43f784ae;hpb=d156e7a20b4ea15c2cbb4bcfa2dca5f1e96ece3b

diff --git a/src/thread.cpp b/src/thread.cpp
index 8269dcf3..16bda280 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -192,14 +192,19 @@ void ThreadsManager::init() {
 
 void ThreadsManager::exit() {
 
+  // Wake up all the slave threads at once. This is faster than "wake and wait"
+  // for each thread and avoids a rare crash once every 10K games under Linux.
+  for (int i = 1; i < MAX_THREADS; i++)
+  {
+      threads[i].do_terminate = true;
+      threads[i].wake_up();
+  }
+
   for (int i = 0; i < MAX_THREADS; i++)
   {
-      // Wake up all the slave threads and wait for termination
       if (i != 0)
       {
-          threads[i].do_terminate = true;
-          threads[i].wake_up();
-
+          // Wait for slave termination
 #if defined(_MSC_VER)
           WaitForSingleObject(threads[i].handle, 0);
           CloseHandle(threads[i].handle);
@@ -248,7 +253,7 @@ template <bool Fake>
 Value ThreadsManager::split(Position& pos, SearchStack* ss, Value alpha, Value beta,
                             Value bestValue, Depth depth, Move threatMove,
                             int moveCount, MovePicker* mp, int nodeType) {
-  assert(pos.is_ok());
+  assert(pos.pos_is_ok());
   assert(bestValue >= -VALUE_INFINITE);
   assert(bestValue <= alpha);
   assert(alpha < beta);