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Retire slavesPositions

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Save the current active position in each Thread
instead of keeping a centralized array in struct
SplitPoint.

This allow to skip a memset() call at each split.

No functional change.
This commit is contained in:
Marco Costalba
2013-02-08 11:04:07 +01:00
parent 880726c13a
commit e5bc79fb9c
3 changed files with 12 additions and 10 deletions
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src/search.cpp
+7 -6
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@@ -1672,9 +1672,9 @@ void Thread::idle_loop() {
sp->mutex.lock();
assert(sp->slavesPositions[idx] == NULL);
assert(activePosition == NULL);
sp->slavesPositions[idx] = &pos;
activePosition = &pos;
switch (sp->nodeType) {
case Root:
@@ -1693,7 +1693,7 @@ void Thread::idle_loop() {
assert(searching);
searching = false;
sp->slavesPositions[idx] = NULL;
activePosition = NULL;
sp->slavesMask &= ~(1ULL << idx);
sp->nodes += pos.nodes_searched();
@@ -1742,7 +1742,7 @@ void check_time() {
nodes = RootPos.nodes_searched();
// Loop across all split points and sum accumulated SplitPoint nodes plus
// all the currently active slaves positions.
// all the currently active positions nodes.
for (size_t i = 0; i < Threads.size(); i++)
for (int j = 0; j < Threads[i]->splitPointsSize; j++)
{
@@ -1754,8 +1754,9 @@ void check_time() {
Bitboard sm = sp.slavesMask;
while (sm)
{
Position* pos = sp.slavesPositions[pop_lsb(&sm)];
nodes += pos ? pos->nodes_searched() : 0;
Position* pos = Threads[pop_lsb(&sm)]->activePosition;
if (pos)
nodes += pos->nodes_searched();
}
sp.mutex.unlock();