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Cache function lookups

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This commit is contained in:
Jason Turner 2015-08-31 09:44:47 -06:00
parent 15eb78bd8f
commit f06e5cdcd6
1 changed files with 18 additions and 5 deletions
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23
include/chaiscript/dispatchkit/dispatchkit.hpp
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@ -658,7 +658,10 @@ namespace chaiscript
}
// no? is it a function object?
return get_function_object_int(name);
auto obj = get_function_object_int(name, loc);
if (obj.first != loc) t_loc.store(obj.first);
return obj.second;
}
@ -740,21 +743,21 @@ namespace chaiscript
{
chaiscript::detail::threading::shared_lock<chaiscript::detail::threading::shared_mutex> l(m_mutex);
return get_function_object_int(t_name);
return get_function_object_int(t_name, 0).second;
}
/// \returns a function object (Boxed_Value wrapper) if it exists
/// \throws std::range_error if it does not
/// \warn does not obtain a mutex lock. \sa get_function_object for public version
Boxed_Value get_function_object_int(const std::string &t_name) const
std::pair<size_t, Boxed_Value> get_function_object_int(const std::string &t_name, const size_t t_hint) const
{
const auto &funs = get_boxed_functions_int();
auto itr = find_keyed_value(funs, t_name);
auto itr = find_keyed_value(funs, t_name, t_hint);
if (itr != funs.end())
{
return itr->second;
return std::make_pair(std::distance(funs.begin(), itr), itr->second);
} else {
throw std::range_error("Object not found: " + t_name);
}
@ -1419,6 +1422,16 @@ namespace chaiscript
});
}
template<typename Container, typename Key>
static typename Container::const_iterator find_keyed_value(const Container &t_c, const Key &t_key, const size_t t_hint)
{
if (t_c.size() > t_hint && t_c[t_hint].first == t_key) {
return t_c.begin() + t_hint;
} else {
return find_keyed_value(t_c, t_key);
}
}
/// Implementation detail for adding a function.
/// \throws exception::name_conflict_error if there's a function matching the given one being added