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Don't copy Position in pretty_pv()

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Also let do_setup_move() don't reuse same StateInfo so that
we can remove the check about different StateInfo objects
before memcpy() in do_move.

Functional change due to harmless additionals
do_move() / undo_move() steps.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-01-09 11:22:59 +01:00
parent c89762288b
commit 15153a1de7
6 changed files with 30 additions and 36 deletions
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12
src/position.cpp
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@@ -776,7 +776,9 @@ bool Position::move_is_check(Move m, const CheckInfo& ci) const {
/// It should be used when setting up a position on board.
/// You can't undo the move.
void Position::do_setup_move(Move m, StateInfo& newSt) {
void Position::do_setup_move(Move m) {
StateInfo newSt;
do_move(m, newSt);
@@ -787,6 +789,10 @@ void Position::do_setup_move(Move m, StateInfo& newSt) {
// Update the number of plies played from the starting position
startPosPlyCounter++;
// Our StateInfo newSt is about going out of scope so copy
// its content inside pos before it disappears.
detach();
}
/// Position::do_move() makes a move, and saves all information necessary
@@ -803,6 +809,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
assert(is_ok());
assert(move_is_ok(m));
assert(&newSt != st);
nodes++;
Key key = st->key;
@@ -818,8 +825,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
Value npMaterial[2];
};
if (&newSt != st)
memcpy(&newSt, st, sizeof(ReducedStateInfo));
memcpy(&newSt, st, sizeof(ReducedStateInfo));
newSt.previous = st;
st = &newSt;