Use more_than_one() instead of single_bit()

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 7b9a4f327823a4e0e60bcf9492d972ea0ccaa16d..a644cae9b64ede6d5a1e682cd62f5aff9b4e01af 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -28,22 +28,17 @@
 using namespace Search;
 
 ThreadsManager Threads; // Global object
-THREAD_LOCAL Thread* this_thread; // Thread local variable
 
 namespace { extern "C" {
 
  // start_routine() is the C function which is called when a new thread
  // is launched. It is a wrapper to member function pointed by start_fn.
 
- long start_routine(Thread* th) {
-
-   this_thread = th; // Save pointer into thread local storage
-   (th->*(th->start_fn))();
-   return 0;
- }
+ long start_routine(Thread* th) { (th->*(th->start_fn))(); return 0; }
 
 } }
 
+
 // Thread c'tor starts a newly-created thread of execution that will call
 // the idle loop function pointed by start_fn going immediately to sleep.
 
@@ -210,7 +205,6 @@ void ThreadsManager::init() {
   lock_init(splitLock);
   timer = new Thread(&Thread::timer_loop);
   threads.push_back(new Thread(&Thread::main_loop));
-  this_thread = main_thread(); // Use main thread's resources
   read_uci_options();
 }
 
@@ -313,18 +307,19 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
   assert(beta <= VALUE_INFINITE);
   assert(depth > DEPTH_ZERO);
 
-  Thread* master = this_thread;
+  Thread* master = pos.this_thread();
 
   if (master->splitPointsCnt >= MAX_SPLITPOINTS_PER_THREAD)
       return bestValue;
 
   // Pick the next available split point from the split point stack
-  SplitPoint* sp = &master->splitPoints[master->splitPointsCnt++];
+  SplitPoint* sp = &master->splitPoints[master->splitPointsCnt];
 
   sp->parent = master->curSplitPoint;
   sp->master = master;
   sp->cutoff = false;
   sp->slavesMask = 1ULL << master->idx;
+  sp->allSlavesMask = 1ULL << master->idx;
   sp->depth = depth;
   sp->bestMove = *bestMove;
   sp->threatMove = threatMove;
@@ -353,6 +348,7 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
       if (threads[i]->is_available_to(master))
       {
           sp->slavesMask |= 1ULL << i;
+          sp->allSlavesMask |= 1ULL << i;
           threads[i]->curSplitPoint = sp;
           threads[i]->is_searching = true; // Slave leaves idle_loop()
 
@@ -360,9 +356,14 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
               threads[i]->wake_up();
 
           if (++slavesCnt + 1 >= maxThreadsPerSplitPoint) // Master is always included
+          {
+              sp->allSlavesMask = 0; // Disable reparenting to this split point
               break;
+          }
       }
 
+  master->splitPointsCnt++;
+
   lock_release(splitLock);
   lock_release(sp->lock);