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#pragma once
template <typename K, typename V>
class RWStorage
{
public:
void add(K key, V value)
{
QWriteLocker l(&lock);
cache[key] = value;
stale_entries.remove(key);
}
V get(K key)
{
QReadLocker l(&lock);
if(cache.contains(key))
{
return cache[key];
}
else return V();
}
bool get(K key, V& value)
{
QReadLocker l(&lock);
if(cache.contains(key))
{
value = cache[key];
return true;
}
else return false;
}
bool has(K key)
{
QReadLocker l(&lock);
return cache.contains(key);
}
bool stale(K key)
{
QReadLocker l(&lock);
if(!cache.contains(key))
return true;
return stale_entries.contains(key);
}
void setStale(K key)
{
QWriteLocker l(&lock);
if(cache.contains(key))
{
stale_entries.insert(key);
}
}
void clear()
{
QWriteLocker l(&lock);
cache.clear();
stale_entries.clear();
}
private:
QReadWriteLock lock;
QMap<K, V> cache;
QSet<K> stale_entries;
};
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