Better value clipping in game_phase()

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 432d573d42ce2b2746a1f11cac6610979d8097ba..62ff37641c7cb013fb3376d795382ca4d1aaae9f 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -119,7 +119,7 @@ bool Thread::available_to(const Thread* master) const {
 
   // Make a local copy to be sure it doesn't become zero under our feet while
   // testing next condition and so leading to an out of bounds access.
-  int size = splitPointsSize;
+  const int size = splitPointsSize;
 
   // No split points means that the thread is available as a slave for any
   // other thread otherwise apply the "helpful master" concept if possible.
@@ -181,20 +181,20 @@ void MainThread::idle_loop() {
 
 
 // init() is called at startup to create and launch requested threads, that will
-// go immediately to sleep due to 'sleepWhileIdle' set to true. We cannot use
-// a c'tor because Threads is a static object and we need a fully initialized
-// engine at this point due to allocation of Endgames in Thread c'tor.
+// go immediately to sleep. We cannot use a c'tor because Threads is a static
+// object and we need a fully initialized engine at this point due to allocation
+// of Endgames in Thread c'tor.
 
 void ThreadPool::init() {
 
-  sleepWhileIdle = true;
   timer = new_thread<TimerThread>();
   push_back(new_thread<MainThread>());
   read_uci_options();
 }
 
 
-// exit() cleanly terminates the threads before the program exits
+// exit() cleanly terminates the threads before the program exits. Cannot be done in
+// d'tor because we have to terminate the threads before to free ThreadPool object.
 
 void ThreadPool::exit() {
 
@@ -292,6 +292,7 @@ void Thread::split(Position& pos, const Stack* ss, Value alpha, Value beta, Valu
   Threads.mutex.lock();
   sp.mutex.lock();
 
+  sp.allSlavesSearching = true; // Must be set under lock protection
   ++splitPointsSize;
   activeSplitPoint = &sp;
   activePosition = NULL;