Created
March 3, 2016 15:21
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void | |
Drawing::_pickItemsForCaching() | |
{ | |
// we cache the objects with the highest score until the budget is exhausted | |
_candidate_items.sort(std::greater<CacheRecord>()); | |
size_t used = 0; | |
CandidateList::iterator i; | |
for (i = _candidate_items.begin(); i != _candidate_items.end(); ++i) { | |
if (used + i->cache_size > _cache_budget) break; | |
used += i->cache_size; | |
} | |
std::set<DrawingItem*> to_cache; | |
for (i = _candidate_items.begin(); i != _candidate_items.end(); ++i) { | |
/* i->item->setCached(true);*/ | |
to_cache.insert(i->item); | |
} | |
// Everything which is now in _cached_items but not in to_cache must be uncached | |
// Note that calling setCached on an item modifies _cached_items | |
// TODO: find a way to avoid the set copy | |
/* std::set<DrawingItem*> to_uncache;*/ | |
/* std::set_difference(_cached_items.begin(), _cached_items.end(),*/ | |
/* to_cache.begin(), to_cache.end(),*/ | |
/* std::inserter(to_uncache, to_uncache.end()));*/ | |
/* for (std::set<DrawingItem*>::iterator j = to_uncache.begin(); j != to_uncache.end(); ++j) {*/ | |
/* (*j)->setCached(false);*/ | |
/* }*/ | |
} |
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