Remove HistoryStats

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 440b8bf0e4f06b5ea6087aa76c2e9aec3ca02cc0..d900cbfcea1a418aec9f8f4976ab70a0d95c3d8d 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -25,8 +25,7 @@
 #include "search.h"
 #include "thread.h"
 #include "uci.h"
-
-using namespace Search;
+#include "syzygy/tbprobe.h"
 
 ThreadPool Threads; // Global object
 
@@ -37,8 +36,7 @@ Thread::Thread() {
 
   resetCalls = exit = false;
   maxPly = callsCnt = 0;
-  history.clear();
-  counterMoves.clear();
+  tbHits = 0;
   idx = Threads.size(); // Start from 0
 
   std::unique_lock<Mutex> lk(mutex);
@@ -96,6 +94,8 @@ void Thread::start_searching(bool resume) {
 
 void Thread::idle_loop() {
 
+  WinProcGroup::bindThisThread(idx);
+
   while (!exit)
   {
       std::unique_lock<Mutex> lk(mutex);
@@ -123,7 +123,7 @@ void Thread::idle_loop() {
 
 void ThreadPool::init() {
 
-  push_back(new MainThread);
+  push_back(new MainThread());
   read_uci_options();
 }
 
@@ -150,7 +150,7 @@ void ThreadPool::read_uci_options() {
   assert(requested > 0);
 
   while (size() < requested)
-      push_back(new Thread);
+      push_back(new Thread());
 
   while (size() > requested)
       delete back(), pop_back();
@@ -159,38 +159,65 @@ void ThreadPool::read_uci_options() {
 
 /// ThreadPool::nodes_searched() returns the number of nodes searched
 
-int64_t ThreadPool::nodes_searched() {
+uint64_t ThreadPool::nodes_searched() const {
 
-  int64_t nodes = 0;
+  uint64_t nodes = 0;
   for (Thread* th : *this)
       nodes += th->rootPos.nodes_searched();
   return nodes;
 }
 
 
+/// ThreadPool::tb_hits() returns the number of TB hits
+
+uint64_t ThreadPool::tb_hits() const {
+
+  uint64_t hits = 0;
+  for (Thread* th : *this)
+      hits += th->tbHits;
+  return hits;
+}
+
+
 /// ThreadPool::start_thinking() wakes up the main thread sleeping in idle_loop()
 /// and starts a new search, then returns immediately.
 
-void ThreadPool::start_thinking(const Position& pos, const LimitsType& limits,
-                                StateStackPtr& states) {
+void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
+                                const Search::LimitsType& limits) {
 
   main()->wait_for_search_finished();
 
-  Signals.stopOnPonderhit = Signals.stop = false;
-
-  main()->rootMoves.clear();
-  main()->rootPos = pos;
-  Limits = limits;
-  if (states.get()) // If we don't set a new position, preserve current state
-  {
-      SetupStates = std::move(states); // Ownership transfer here
-      assert(!states.get());
-  }
+  Search::Signals.stopOnPonderhit = Search::Signals.stop = false;
+  Search::Limits = limits;
+  Search::RootMoves rootMoves;
 
   for (const auto& m : MoveList<LEGAL>(pos))
       if (   limits.searchmoves.empty()
           || std::count(limits.searchmoves.begin(), limits.searchmoves.end(), m))
-          main()->rootMoves.push_back(RootMove(m));
+          rootMoves.push_back(Search::RootMove(m));
+
+  if (!rootMoves.empty())
+      Tablebases::filter_root_moves(pos, rootMoves);
+
+  // After ownership transfer 'states' becomes empty, so if we stop the search
+  // and call 'go' again without setting a new position states.get() == NULL.
+  assert(states.get() || setupStates.get());
+
+  if (states.get())
+      setupStates = std::move(states); // Ownership transfer, states is now empty
+
+  StateInfo tmp = setupStates->back();
+
+  for (Thread* th : Threads)
+  {
+      th->maxPly = 0;
+      th->tbHits = 0;
+      th->rootDepth = DEPTH_ZERO;
+      th->rootMoves = rootMoves;
+      th->rootPos.set(pos.fen(), pos.is_chess960(), &setupStates->back(), th);
+  }
+
+  setupStates->back() = tmp; // Restore st->previous, cleared by Position::set()
 
   main()->start_searching();
 }