Green-Sky/solanaceae_object_store
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add simple+fast hash for object handles

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Green Sky 2024-07-22 09:51:27 +02:00
parent 43eee367a7
commit b185ffc886
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1 changed files with 9 additions and 0 deletions
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src/solanaceae/object_store/object_store.hpp
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@ -100,3 +100,12 @@ struct ObjectStore2 : public ObjectStoreEventProviderI {
void throwEventDestroy(const Object o); void throwEventDestroy(const Object o);
}; };
template<>
struct std::hash<ObjectHandle> {
std::size_t operator()(ObjectHandle const& o) const noexcept {
const std::size_t h1 = reinterpret_cast<std::size_t>(o.registry());
const std::size_t h2 = entt::to_integral(o.entity());
return (h1 << 3) ^ (h2 * 11400714819323198485llu);
}
};