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Optimization for parallel hash map erase_if function. Deals only with inner set iterators to avoid overhead of using parallel map iterators.

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Silence a constexpr warning in allocator test
This commit is contained in:
Brian McKinnon
2023-10-19 13:26:47 -05:00
parent 9f52b30958
commit 749a283bf3
2 changed files with 8 additions and 5 deletions
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parallel_hashmap/phmap.h
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+7 -4
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@@ -3301,12 +3301,15 @@ public:
#if __cplusplus >= 201703L
static_assert(std::is_invocable<F, value_type&>::value);
#endif
L m;
auto it = this->template find<K, L>(key, this->hash(key), m);
if (it == this->end()) return false;
auto hashval = this->hash(key);
Inner& inner = sets_[subidx(hashval)];
auto& set = inner.set_;
L m(inner);
auto it = set.find(key, hashval);
if (it == set.end()) return false;
if (std::forward<F>(f)(const_cast<value_type &>(*it)))
{
this->erase(it);
set._erase(it);
return true;
}
return false;