Remove the now redundant TT prefetch call from Position::do_move.

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 0ebf82f92daf8b46dbfc45a6c0fce363ef4c6808..3b98ac631985200d835796e9512751a17fdda641 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() {
 
@@ -255,7 +255,6 @@ Thread* ThreadPool::available_slave(const Thread* master) const {
 // leave their idle loops and call search(). When all threads have returned from
 // search() then split() returns.
 
-template <bool Fake>
 void Thread::split(Position& pos, const Stack* ss, Value alpha, Value beta, Value* bestValue,
                    Move* bestMove, Depth depth, int moveCount,
                    MovePicker* movePicker, int nodeType, bool cutNode) {
@@ -297,14 +296,13 @@ void Thread::split(Position& pos, const Stack* ss, Value alpha, Value beta, Valu
   activeSplitPoint = &sp;
   activePosition = NULL;
 
-  if (!Fake)
-      for (Thread* slave; (slave = Threads.available_slave(this)) != NULL; )
-      {
-          sp.slavesMask.set(slave->idx);
-          slave->activeSplitPoint = &sp;
-          slave->searching = true; // Slave leaves idle_loop()
-          slave->notify_one(); // Could be sleeping
-      }
+  for (Thread* slave; (slave = Threads.available_slave(this)) != NULL; )
+  {
+      sp.slavesMask.set(slave->idx);
+      slave->activeSplitPoint = &sp;
+      slave->searching = true; // Slave leaves idle_loop()
+      slave->notify_one(); // Could be sleeping
+  }
 
   // Everything is set up. The master thread enters the idle loop, from which
   // it will instantly launch a search, because its 'searching' flag is set.
@@ -339,11 +337,6 @@ void Thread::split(Position& pos, const Stack* ss, Value alpha, Value beta, Valu
   Threads.mutex.unlock();
 }
 
-// Explicit template instantiations
-template void Thread::split<false>(Position&, const Stack*, Value, Value, Value*, Move*, Depth, int, MovePicker*, int, bool);
-template void Thread::split< true>(Position&, const Stack*, Value, Value, Value*, Move*, Depth, int, MovePicker*, int, bool);
-
-
 // wait_for_think_finished() waits for main thread to go to sleep then returns
 
 void ThreadPool::wait_for_think_finished() {