Value value_from_tt(Value v, int ply);
void update_pv(Move* pv, Move move, Move* childPv);
void update_stats(const Position& pos, Stack* ss, Move move, Depth depth, Move* quiets, int quietsCnt);
+ void check_time();
} // namespace
}
}
- Threads.timer->run = true;
- Threads.timer->notify_one(); // Start the recurring timer
-
search(true); // Let's start searching!
- // Stop the threads and the timer
+ // Stop the threads
Signals.stop = true;
- Threads.timer->run = false;
// Wait until all threads have finished
for (Thread* th : Threads)
{
// Set up the new depth for the helper threads
if (!isMainThread)
- rootDepth = Threads.main()->rootDepth + Depth(int(2.2 * log(1 + this->idx)));
+ rootDepth = std::min(DEPTH_MAX - ONE_PLY, Threads.main()->rootDepth + Depth(int(2.2 * log(1 + this->idx))));
// Age out PV variability metric
if (isMainThread)
assert(-VALUE_INFINITE <= alpha && alpha < beta && beta <= VALUE_INFINITE);
assert(PvNode || (alpha == beta - 1));
- assert(depth > DEPTH_ZERO);
+ assert(DEPTH_ZERO < depth && depth < DEPTH_MAX);
Move pv[MAX_PLY+1], quietsSearched[64];
StateInfo st;
bestValue = -VALUE_INFINITE;
ss->ply = (ss-1)->ply + 1;
+ // Check for available remaining time
+ if (thisThread->resetCallsCnt.load(std::memory_order_relaxed))
+ {
+ thisThread->resetCallsCnt = false;
+ thisThread->callsCnt = 0;
+ }
+ if (++thisThread->callsCnt > 4096)
+ {
+ for (Thread* th : Threads)
+ th->resetCallsCnt = true;
+
+ check_time();
+ }
+
// Used to send selDepth info to GUI
if (PvNode && thisThread->maxPly < ss->ply)
thisThread->maxPly = ss->ply;
return best;
}
+
+ // check_time() is used to print debug info and, more importantly, to detect
+ // when we are out of available time and thus stop the search.
+
+ void check_time() {
+
+ static TimePoint lastInfoTime = now();
+
+ int elapsed = Time.elapsed();
+ TimePoint tick = Limits.startTime + elapsed;
+
+ if (tick - lastInfoTime >= 1000)
+ {
+ lastInfoTime = tick;
+ dbg_print();
+ }
+
+ // An engine may not stop pondering until told so by the GUI
+ if (Limits.ponder)
+ return;
+
+ if (Limits.use_time_management())
+ {
+ bool stillAtFirstMove = Signals.firstRootMove.load(std::memory_order_relaxed)
+ && !Signals.failedLowAtRoot.load(std::memory_order_relaxed)
+ && elapsed > Time.available() * 3 / 4;
+
+ if (stillAtFirstMove || elapsed > Time.maximum() - 10)
+ Signals.stop = true;
+ }
+ else if (Limits.movetime && elapsed >= Limits.movetime)
+ Signals.stop = true;
+
+ else if (Limits.nodes && Threads.nodes_searched() >= Limits.nodes)
+ Signals.stop = true;
+ }
+
} // namespace
return false;
}
-
-
-/// TimerThread::check_time() is called by when the timer triggers. It is used
-/// to print debug info and, more importantly, to detect when we are out of
-/// available time and thus stop the search.
-
-void TimerThread::check_time() {
-
- static TimePoint lastInfoTime = now();
- int elapsed = Time.elapsed();
-
- if (now() - lastInfoTime >= 1000)
- {
- lastInfoTime = now();
- dbg_print();
- }
-
- // An engine may not stop pondering until told so by the GUI
- if (Limits.ponder)
- return;
-
- if (Limits.use_time_management())
- {
- bool stillAtFirstMove = Signals.firstRootMove
- && !Signals.failedLowAtRoot
- && elapsed > Time.available() * 3 / 4;
-
- if ( stillAtFirstMove
- || elapsed > Time.maximum() - 2 * TimerThread::Resolution)
- Signals.stop = true;
- }
- else if (Limits.movetime && elapsed >= Limits.movetime)
- Signals.stop = true;
-
- else if (Limits.nodes && Threads.nodes_searched() >= Limits.nodes)
- Signals.stop = true;
-}