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Code Issues Releases Wiki Activity

Remove failedLow from the mainThread struct

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failedLow is in fact a local variable in Thread::search().

Also clean some spaces and tabs in code.

No functional change.
This commit is contained in:
Joost VandeVondele 2018-06-11 09:46:05 +02:00 • committed by Stéphane Nicolet
parent 528507b303
commit 2af2c67650
3 changed files with 9 additions and 9 deletions
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2
src/pawns.cpp
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@ -34,7 +34,7 @@ namespace {
// Pawn penalties // Pawn penalties
constexpr Score Isolated = S(13, 16); constexpr Score Isolated = S(13, 16);
constexpr Score Backward = S(17, 11); constexpr Score Backward = S(17, 11);
constexpr Score Doubled = S(13, 40); constexpr Score Doubled = S(13, 40);
// Connected pawn bonus by opposed, phalanx, #support and rank // Connected pawn bonus by opposed, phalanx, #support and rank
Score Connected[2][2][3][RANK_NB]; Score Connected[2][2][3][RANK_NB];

11
src/search.cpp
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@ -296,6 +296,7 @@ void Thread::search() {
MainThread* mainThread = (this == Threads.main() ? Threads.main() : nullptr); MainThread* mainThread = (this == Threads.main() ? Threads.main() : nullptr);
double timeReduction = 1.0; double timeReduction = 1.0;
Color us = rootPos.side_to_move(); Color us = rootPos.side_to_move();
bool failedLow;
std::memset(ss-4, 0, 7 * sizeof(Stack)); std::memset(ss-4, 0, 7 * sizeof(Stack));
for (int i = 4; i > 0; i--) for (int i = 4; i > 0; i--)
@ -305,7 +306,7 @@ void Thread::search() {
beta = VALUE_INFINITE; beta = VALUE_INFINITE;
if (mainThread) if (mainThread)
mainThread->bestMoveChanges = 0, mainThread->failedLow = false; mainThread->bestMoveChanges = 0, failedLow = false;
size_t multiPV = Options["MultiPV"]; size_t multiPV = Options["MultiPV"];
Skill skill(Options["Skill Level"]); Skill skill(Options["Skill Level"]);
@ -346,7 +347,7 @@ void Thread::search() {
// Age out PV variability metric // Age out PV variability metric
if (mainThread) if (mainThread)
mainThread->bestMoveChanges *= 0.517, mainThread->failedLow = false; mainThread->bestMoveChanges *= 0.517, failedLow = false;
// Save the last iteration's scores before first PV line is searched and // Save the last iteration's scores before first PV line is searched and
// all the move scores except the (new) PV are set to -VALUE_INFINITE. // all the move scores except the (new) PV are set to -VALUE_INFINITE.
@ -423,7 +424,7 @@ void Thread::search() {
if (mainThread) if (mainThread)
{ {
mainThread->failedLow = true; failedLow = true;
Threads.stopOnPonderhit = false; Threads.stopOnPonderhit = false;
} }
} }
@ -471,7 +472,7 @@ void Thread::search() {
&& !Threads.stop && !Threads.stop
&& !Threads.stopOnPonderhit) && !Threads.stopOnPonderhit)
{ {
const int F[] = { mainThread->failedLow, const int F[] = { failedLow,
bestValue - mainThread->previousScore }; bestValue - mainThread->previousScore };
int improvingFactor = std::max(246, std::min(832, 306 + 119 * F[0] - 6 * F[1])); int improvingFactor = std::max(246, std::min(832, 306 + 119 * F[0] - 6 * F[1]));
@ -1165,7 +1166,7 @@ moves_loop: // When in check, search starts from here
// Quiet best move: update move sorting heuristics // Quiet best move: update move sorting heuristics
if (!pos.capture_or_promotion(bestMove)) if (!pos.capture_or_promotion(bestMove))
update_quiet_stats(pos, ss, bestMove, quietsSearched, quietCount, update_quiet_stats(pos, ss, bestMove, quietsSearched, quietCount,
stat_bonus(depth + (bestValue > beta + PawnValueMg ? ONE_PLY : DEPTH_ZERO))); stat_bonus(depth + (bestValue > beta + PawnValueMg ? ONE_PLY : DEPTH_ZERO)));
else else
update_capture_stats(pos, bestMove, capturesSearched, captureCount, stat_bonus(depth + ONE_PLY)); update_capture_stats(pos, bestMove, capturesSearched, captureCount, stat_bonus(depth + ONE_PLY));

1
src/thread.h
View file

@ -85,7 +85,6 @@ struct MainThread : public Thread {
void search() override; void search() override;
void check_time(); void check_time();
bool failedLow;
double bestMoveChanges, previousTimeReduction; double bestMoveChanges, previousTimeReduction;
Value previousScore; Value previousScore;
int callsCnt; int callsCnt;