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Code Issues Releases Wiki Activity

ircd::iov: Make node emplacement conditional.

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This commit is contained in:
Jason Volk 2018-06-05 10:07:19 -07:00
parent 95f14503cf
commit f1443752c5
1 changed files with 18 additions and 2 deletions
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20
include/ircd/iov.h
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@ -52,6 +52,7 @@ struct ircd::iov<T>::node
operator T &();
node() = default;
template<class... args> node(iov *const &, args&&...);
template<class... args> node(iov &, args&&...);
node(node &&) = delete;
node(const node &) = delete;
@ -64,11 +65,24 @@ template<class T>
template<class... args>
ircd::iov<T>::node::node(iov &iov,
args&&... a)
:i{&iov}
:node
{
&iov, std::forward<args>(a)...
}
{}
template<class T>
template<class... args>
ircd::iov<T>::node::node(iov *const &iov,
args&&... a)
:i{iov}
{
if(!iov)
return;
auto &list
{
static_cast<iov::list &>(iov)
*static_cast<iov::list *>(iov)
};
auto &list_node
@ -99,6 +113,7 @@ template<class T>
ircd::iov<T>::node::operator
T &()
{
assert(i);
auto &list_node(static_cast<iov::list_node &>(*this));
return *list_node._M_valptr(); //TODO: XXX
}
@ -108,6 +123,7 @@ ircd::iov<T>::node::operator
const T &()
const
{
assert(i);
const auto &list_node(static_cast<const iov::list_node &>(*this));
return *list_node._M_valptr(); //TODO: XXX
}