X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.h;h=7557c0e7a90a80695dc37ae10aae4d2d8b08867a;hp=46c40d9bfdab92e3fe3d655f4d50e03629511c3a;hb=55948623e7b8ad1fc6624cd06733b16d295eecb8;hpb=3b8f66f8accefe86db9296fa276e4b33cdc450e2

diff --git a/src/thread.h b/src/thread.h
index 46c40d9b..7557c0e7 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -17,7 +17,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#if !defined(THREAD_H_INCLUDED)
+#ifndef THREAD_H_INCLUDED
 #define THREAD_H_INCLUDED
 
 #include <vector>
@@ -86,21 +86,35 @@ struct SplitPoint {
 };
 
 
+/// ThreadBase struct is the base of the hierarchy from where we derive all the
+/// specialized thread classes.
+
+struct ThreadBase {
+
+  ThreadBase() : exit(false) {}
+  virtual ~ThreadBase() {}
+  virtual void idle_loop() = 0;
+  void notify_one();
+  void wait_for(volatile const bool& b);
+
+  Mutex mutex;
+  ConditionVariable sleepCondition;
+  NativeHandle handle;
+  volatile bool exit;
+};
+
+
 /// Thread struct keeps together all the thread related stuff like locks, state
 /// and especially split points. We also use per-thread pawn and material hash
 /// tables so that once we get a pointer to an entry its life time is unlimited
 /// and we don't have to care about someone changing the entry under our feet.
 
-struct Thread {
+struct Thread : public ThreadBase {
 
   Thread();
-  virtual ~Thread();
-
   virtual void idle_loop();
-  void notify_one();
   bool cutoff_occurred() const;
   bool is_available_to(Thread* master) const;
-  void wait_for(volatile const bool& b);
 
   template <bool Fake>
   void split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value* bestValue, Move* bestMove,
@@ -113,17 +127,13 @@ struct Thread {
   Position* activePosition;
   size_t idx;
   int maxPly;
-  Mutex mutex;
-  ConditionVariable sleepCondition;
-  NativeHandle handle;
   SplitPoint* volatile activeSplitPoint;
   volatile int splitPointsSize;
   volatile bool searching;
-  volatile bool exit;
 };
 
 
-/// MainThread and TimerThread are sublassed from Thread to characterize the two
+/// MainThread and TimerThread are derived classes used to characterize the two
 /// special threads: the main one and the recurring timer.
 
 struct MainThread : public Thread {
@@ -132,7 +142,7 @@ struct MainThread : public Thread {
   volatile bool thinking;
 };
 
-struct TimerThread : public Thread {
+struct TimerThread : public ThreadBase {
   TimerThread() : msec(0) {}
   virtual void idle_loop();
   int msec;
@@ -148,7 +158,7 @@ struct ThreadPool : public std::vector<Thread*> {
   void init(); // No c'tor and d'tor, threads rely on globals that should
   void exit(); // be initialized and valid during the whole thread lifetime.
 
-  MainThread* main_thread() { return static_cast<MainThread*>((*this)[0]); }
+  MainThread* main() { return static_cast<MainThread*>((*this)[0]); }
   void read_uci_options();
   Thread* available_slave(Thread* master) const;
   void wait_for_think_finished();
@@ -165,4 +175,4 @@ struct ThreadPool : public std::vector<Thread*> {
 
 extern ThreadPool Threads;
 
-#endif // !defined(THREAD_H_INCLUDED)
+#endif // #ifndef THREAD_H_INCLUDED