kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-07-11 19:49:14 +00:00
Code Issues Releases Wiki Activity

Avoid research in case thread has already been asked to stop

Browse source 
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Joona Kiiski 2010-02-24 12:02:39 +02:00 • committed by Marco Costalba
parent 5c944fb3b4
commit 8a78ac84f3
1 changed files with 4 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/search.cpp
View file

@ -1835,7 +1835,7 @@ namespace {
if (ss[sp->ply].reduction)
{
value = -search(pos, ss, -(sp->beta-1), newDepth-ss[sp->ply].reduction, sp->ply+1, true, threadID);
doFullDepthSearch = (value >= sp->beta);
doFullDepthSearch = (value >= sp->beta && !TM.thread_should_stop(threadID));
}
}
@ -1932,7 +1932,7 @@ namespace {
{
Value localAlpha = sp->alpha;
value = -search(pos, ss, -localAlpha, newDepth-ss[sp->ply].reduction, sp->ply+1, true, threadID);
doFullDepthSearch = (value > localAlpha);
doFullDepthSearch = (value > localAlpha && !TM.thread_should_stop(threadID));
}
}
@ -1942,16 +1942,14 @@ namespace {
ss[sp->ply].reduction = Depth(0);
value = -search(pos, ss, -localAlpha, newDepth, sp->ply+1, true, threadID);
if (value > localAlpha && value < sp->beta)
if (value > localAlpha && value < sp->beta && !TM.thread_should_stop(threadID))
{
// If another thread has failed high then sp->alpha has been increased
// to be higher or equal then beta, if so, avoid to start a PV search.
localAlpha = sp->alpha;
if (localAlpha < sp->beta)
value = -search_pv(pos, ss, -sp->beta, -localAlpha, newDepth, sp->ply+1, threadID);
else
assert(TM.thread_should_stop(threadID));
}
}
}
pos.undo_move(move);