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Code Issues Releases Wiki Activity

ircd::util: Make scope_count a template.

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This commit is contained in:
Jason Volk 2019-02-28 13:23:09 -08:00
parent 8cb5b78807
commit 8054317106
1 changed files with 8 additions and 7 deletions
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15
include/ircd/util/scope_count.h
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@ -13,31 +13,32 @@
namespace ircd::util
{
struct scope_count;
template<class T> struct scope_count;
};
/// A simple boiler-plate for incrementing a counter when constructed and
/// decrementing it to its previous value when destructed. This takes a runtime
/// reference to that counter.
template<class T>
struct ircd::util::scope_count
{
ulong *count {nullptr};
T *count {nullptr};
scope_count(ulong &count);
scope_count(T &count);
scope_count(const scope_count &) = delete;
scope_count(scope_count &&) noexcept = delete;
~scope_count() noexcept;
};
inline
ircd::util::scope_count::scope_count(ulong &count)
template<class T>
ircd::util::scope_count<T>::scope_count(T &count)
:count{&count}
{
++count;
}
inline
ircd::util::scope_count::~scope_count()
template<class T>
ircd::util::scope_count<T>::~scope_count()
noexcept
{
assert(count);