RegionFile* WorldCache::getRegion(const RegionPos& pos) {
CacheEntry<RegionPos, RegionFile>& entry = regioncache[getRegionCacheIndex(pos)];
// check if region is already in cache
if (entry.used && entry.key == pos) {
//regionstats.hits++;
return &entry.value;
}
// if not try to load the region
// but make sure we did not already try to load the region file and it was broken
if (regions_broken.count(pos))
return nullptr;
// region does not exist, region in cache was not modified
if (!world.getRegion(pos, entry.value))
return nullptr;
if (!entry.value.read()) {
// the region is not valid, region in cache was probably modified
entry.used = false;
// remember this region as broken and do not try to load it again
regions_broken.insert(pos);
return nullptr;
}
entry.used = true;
entry.key = pos;
//regionstats.misses++;
return &entry.value;
}
RegionFile* WorldCache::getRegion(const RegionPos& pos) {
CacheEntry<RegionPos, RegionFile>& entry = regioncache[getRegionCacheIndex(pos)];
// check if region is already in cache
if (entry.used && entry.key == pos) {
//regionstats.hits++;
return &entry.value;
}
// if not try to load the region
// region does not exist, region in cache was not modified
if (!world.getRegion(pos, entry.value))
return nullptr;
if (!entry.value.read()) {
// the region is not valid, region in cache was probably modified
entry.used = false;
return nullptr;
}
entry.used = true;
entry.key = pos;
//regionstats.misses++;
return &entry.value;
}
