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Add std::hash specialization for IntrusivePtr

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This commit is contained in:
Jon Siwek 2021-04-03 09:49:43 -07:00
parent cffc8fa13c
commit 583310f6dd
1 changed files with 11 additions and 0 deletions
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11
src/IntrusivePtr.h
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@ -4,6 +4,7 @@
#include <type_traits>
#include <utility>
#include <functional>
namespace zeek {
@ -292,3 +293,13 @@ auto operator!=(const zeek::IntrusivePtr<T>& x, const zeek::IntrusivePtr<U>& y)
}
} // namespace zeek
// -- hashing ------------------------------------------------
namespace std {
template <class T> struct hash<zeek::IntrusivePtr<T>> {
// Hash of intrusive pointer is the same as hash of the raw pointer it holds.
size_t operator()(const zeek::IntrusivePtr<T>& v) const noexcept
{ return std::hash<T*>{}(v.get()); }
};
}