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Set the 'Problem' variable only at ply == 1

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Bug fix merged from Glaurung 2.2 for search_pv()

Added the same fix also to sp_search_pv() where
was missing.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2008-12-22 11:44:00 +01:00
parent 23490bd825
commit 3fafc9768a
1 changed files with 8 additions and 4 deletions
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12
src/search.cpp
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@ -1073,7 +1073,9 @@ namespace {
// If we are at ply 1, and we are searching the first root move at // If we are at ply 1, and we are searching the first root move at
// ply 0, set the 'Problem' variable if the score has dropped a lot // ply 0, set the 'Problem' variable if the score has dropped a lot
// (from the computer's point of view) since the previous iteration: // (from the computer's point of view) since the previous iteration:
if (Iteration >= 2 && -value <= ValueByIteration[Iteration-1] - ProblemMargin) if ( ply == 1
&& Iteration >= 2
&& -value <= ValueByIteration[Iteration-1] - ProblemMargin)
Problem = true; Problem = true;
} }
@ -1775,8 +1777,10 @@ namespace {
} }
// If we are at ply 1, and we are searching the first root move at // If we are at ply 1, and we are searching the first root move at
// ply 0, set the 'Problem' variable if the score has dropped a lot // ply 0, set the 'Problem' variable if the score has dropped a lot
// (from the computer's point of view) since the previous iteration: // (from the computer's point of view) since the previous iteration.
if (Iteration >= 2 && -value <= ValueByIteration[Iteration-1] - ProblemMargin) if ( sp->ply == 1
&& Iteration >= 2
&& -value <= ValueByIteration[Iteration-1] - ProblemMargin)
Problem = true; Problem = true;
} }
lock_release(&(sp->lock)); lock_release(&(sp->lock));
@ -1785,7 +1789,7 @@ namespace {
lock_grab(&(sp->lock)); lock_grab(&(sp->lock));
// If this is the master thread and we have been asked to stop because of // If this is the master thread and we have been asked to stop because of
// a beta cutoff higher up in the tree, stop all slave threads: // a beta cutoff higher up in the tree, stop all slave threads.
if (sp->master == threadID && thread_should_stop(threadID)) if (sp->master == threadID && thread_should_stop(threadID))
for (int i = 0; i < ActiveThreads; i++) for (int i = 0; i < ActiveThreads; i++)
if (sp->slaves[i]) if (sp->slaves[i])