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Code Issues Releases Wiki Activity

Reset search time as early as possible

Browse source 
In particualr before to wake up main thread that
could take some random time. Until we don't reset
search time we are not able to correctly track
the elapsed search time and this can be dangerous
under extreme time pressure.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2012-03-31 10:01:31 +01:00
parent d033d5e06a
commit cc6c745b54
3 changed files with 5 additions and 3 deletions
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4
src/search.cpp
View file

@ -28,7 +28,6 @@
#include "book.h" #include "book.h"
#include "evaluate.h" #include "evaluate.h"
#include "history.h" #include "history.h"
#include "misc.h"
#include "movegen.h" #include "movegen.h"
#include "movepick.h" #include "movepick.h"
#include "search.h" #include "search.h"
@ -43,6 +42,7 @@ namespace Search {
LimitsType Limits; LimitsType Limits;
std::vector<RootMove> RootMoves; std::vector<RootMove> RootMoves;
Position RootPosition; Position RootPosition;
Time SearchTime;
} }
using std::string; using std::string;
@ -118,7 +118,6 @@ namespace {
size_t MultiPV, UCIMultiPV, PVIdx; size_t MultiPV, UCIMultiPV, PVIdx;
TimeManager TimeMgr; TimeManager TimeMgr;
Time SearchTime;
int BestMoveChanges; int BestMoveChanges;
int SkillLevel; int SkillLevel;
bool SkillLevelEnabled, Chess960; bool SkillLevelEnabled, Chess960;
@ -253,7 +252,6 @@ void Search::think() {
Position& pos = RootPosition; Position& pos = RootPosition;
Chess960 = pos.is_chess960(); Chess960 = pos.is_chess960();
Eval::RootColor = pos.side_to_move(); Eval::RootColor = pos.side_to_move();
SearchTime.restart();
TimeMgr.init(Limits, pos.startpos_ply_counter(), pos.side_to_move()); TimeMgr.init(Limits, pos.startpos_ply_counter(), pos.side_to_move());
TT.new_search(); TT.new_search();
H.clear(); H.clear();

2
src/search.h
View file

@ -23,6 +23,7 @@
#include <cstring> #include <cstring>
#include <vector> #include <vector>
#include "misc.h"
#include "types.h" #include "types.h"
class Position; class Position;
@ -94,6 +95,7 @@ extern volatile SignalsType Signals;
extern LimitsType Limits; extern LimitsType Limits;
extern std::vector<RootMove> RootMoves; extern std::vector<RootMove> RootMoves;
extern Position RootPosition; extern Position RootPosition;
extern Time SearchTime;
extern void init(); extern void init();
extern int64_t perft(Position& pos, Depth depth); extern int64_t perft(Position& pos, Depth depth);

2
src/thread.cpp
View file

@ -432,6 +432,8 @@ void ThreadsManager::start_searching(const Position& pos, const LimitsType& limi
const std::set<Move>& searchMoves) { const std::set<Move>& searchMoves) {
wait_for_search_finished(); wait_for_search_finished();
SearchTime.restart(); // As early as possible
Signals.stopOnPonderhit = Signals.firstRootMove = false; Signals.stopOnPonderhit = Signals.firstRootMove = false;
Signals.stop = Signals.failedLowAtRoot = false; Signals.stop = Signals.failedLowAtRoot = false;