thread: 添加 Thread::pause() 函数并将 stop 更名为 pause (WIP)

尚未确认是否正常工作。

src/thread.cpp

@@ -104,6 +104,13 @@ void Thread::start_searching()
     cv.notify_one(); // Wake up the thread in idle_loop()
 }
 
+void Thread::pause()
+{
+    // TODO: Can work?
+    std::lock_guard<std::mutex> lk(mutex);
+    searching = false;
+    cv.notify_one(); // Wake up the thread in idle_loop()
+}
 
 /// Thread::wait_for_search_finished() blocks on the condition variable
 /// until the thread has finished searching.

src/thread.h

@@ -61,6 +61,8 @@ public:
     void wait_for_search_finished();
     int best_move_count(Move move) const;
 
+    void pause();
+
     size_t pvIdx, pvLast;
     uint64_t ttHitAverage;
     int selDepth, nmpMinPly;

src/ui/qt/gamecontroller.cpp

@@ -116,7 +116,7 @@ GameController::~GameController()
         killTimer(timeID);
 
     // 停掉线程
-    stopAndWaitThreads();
+    pauseAndWaitThreads();
     deleteAiThreads();
 
 #ifdef ENDGAME_LEARNING
@@ -194,7 +194,7 @@ void GameController::gameReset()
 
     // 停掉线程
     if (!gameOptions.getAutoRestart()) {
-        stopThreads();
+        pauseThreads();
         resetAiPlayers();
     }
 
@@ -877,7 +877,7 @@ bool GameController::actionPiece(QPointF pos)
         }
         // 如果已经决出胜负
         else {
-            stopThreads();
+            pauseThreads();
         }
     }
 
@@ -1017,7 +1017,7 @@ bool GameController::command(const string &cmd, bool update /* = true */)
     }
     // 如果已经决出胜负
     else {           
-            stopThreads();
+            pauseThreads();
 
             gameEndTime = now();
             gameDurationTime = gameEndTime - gameStartTime;

src/ui/qt/gamecontroller.h

@@ -279,19 +279,19 @@ public slots:
     void stopAndWaitAiThreads()
     {
         if (isAiPlayer[BLACK]) {
-            aiThread[BLACK]->start_searching();
+            aiThread[BLACK]->pause();
             aiThread[BLACK]->wait_for_search_finished();
         }
         if (isAiPlayer[WHITE]) {
-            aiThread[WHITE]->start_searching();
+            aiThread[WHITE]->pause();
             aiThread[WHITE]->wait_for_search_finished();
         }
     }
 
-    void stopThreads()
+    void pauseThreads()
     {
-        aiThread[BLACK]->start_searching();
-        aiThread[WHITE]->start_searching();
+        aiThread[BLACK]->pause();
+        aiThread[WHITE]->pause();
     }
 
     void waitThreads()
@@ -300,9 +300,9 @@ public slots:
         aiThread[WHITE]->wait_for_search_finished();
     }
 
-    void stopAndWaitThreads()
+    void pauseAndWaitThreads()
     {
-        stopThreads();
+        pauseThreads();
         waitThreads();
     }