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(svn r16323) -Fix [FS#2900]: desyncs due to the fact that depot searching with a maximum search depth simply does not work with YAPF's caches.

This commit is contained in:
rubidium 2009-05-16 20:10:58 +00:00
parent 8324cfc875
commit 814f153b5a
2 changed files with 14 additions and 0 deletions
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4
src/yapf/yapf_costrail.hpp
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@ -54,6 +54,10 @@ protected:
};
protected:
/**
* @note maximum cost doesn't work with caching enabled
* @todo fix maximum cost failing with caching (e.g. FS#2900)
*/
int m_max_cost;
CBlobT<int> m_sig_look_ahead_costs;
bool m_disable_cache;

10
src/yapf/yapf_rail.cpp
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@ -213,6 +213,16 @@ public:
static bool stFindNearestDepotTwoWay(const Vehicle *v, TileIndex t1, Trackdir td1, TileIndex t2, Trackdir td2, int max_distance, int reverse_penalty, TileIndex *depot_tile, bool *reversed)
{
Tpf pf1;
/*
* With caching enabled it simply cannot get a reliable result when you
* have limited the distance a train may travel. This means that the
* cached result does not match uncached result in all cases and that
* causes desyncs. So disable caching when finding for a depot that is
* nearby. This only happens with automatic servicing of vehicles,
* so it will only impact performance when you do not manually set
* depot orders and you do not disable automatic servicing.
*/
if (max_distance != 0) pf1.DisableCache(true);
bool result1 = pf1.FindNearestDepotTwoWay(v, t1, td1, t2, td2, max_distance, reverse_penalty, depot_tile, reversed);
#if DEBUG_YAPF_CACHE