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Restore some omitted object cache remarks that seemed useful

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This commit is contained in:
Alexei Kotov 2025-07-10 17:25:27 +03:00
parent a00e5ec828
commit 6d74a4607c
1 changed files with 5 additions and 4 deletions
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9
components/resource/objectcache.hpp
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@ -56,20 +56,22 @@ namespace Resource
/* /*
* @brief Updates usage timestamps and removes expired items * @brief Updates usage timestamps and removes expired items
* *
* Updates the lastUsage timestamp of cached items that have external references. * Updates the lastUsage timestamp of cached non-nullptr items that have external references.
* Initializes lastUsage timestamp for new items. * Initializes lastUsage timestamp for new items.
* Removes items that haven't been referenced for longer than expiryDelay. * Removes items that haven't been referenced for longer than expiryDelay.
* *
* \note
* Last usage might be updated from other places so nullptr items
* that are not referenced elsewhere are not always removed.
*
* @param referenceTime the timestamp indicating when the item was most recently used * @param referenceTime the timestamp indicating when the item was most recently used
* @param expiryDelay the delay after which the cache entry for an item expires * @param expiryDelay the delay after which the cache entry for an item expires
*/ */
void update(double referenceTime, double expiryDelay) void update(double referenceTime, double expiryDelay)
{ {
std::vector<osg::ref_ptr<osg::Object>> objectsToRemove; std::vector<osg::ref_ptr<osg::Object>> objectsToRemove;
{ {
const double expiryTime = referenceTime - expiryDelay; const double expiryTime = referenceTime - expiryDelay;
std::lock_guard<std::mutex> lock(mMutex); std::lock_guard<std::mutex> lock(mMutex);
std::erase_if(mItems, [&](auto& v) { std::erase_if(mItems, [&](auto& v) {
@ -93,7 +95,6 @@ namespace Resource
return true; return true;
}); });
} }
// remove expired items from cache // remove expired items from cache
objectsToRemove.clear(); objectsToRemove.clear();
} }