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simplified erasure

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This commit is contained in:
joaquintides
2023-12-18 13:25:14 +01:00
parent 35138450c8
commit b55a13c6b6
1 changed files with 4 additions and 7 deletions
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11
include/boost/unordered/detail/foa/concurrent_table.hpp
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@ -877,14 +877,12 @@ public:
[&,this](group_type* pg,unsigned int n,element_type* p)
{
if(f(cast_for(group_shared{},type_policy::value_from(*p)))){
auto expected=group_type::reduced_hash(hash); // TODO: prove no ABA
// TODO: prove no ABA
auto pc=reinterpret_cast<unsigned char*>(pg)+n;
auto mco=group_type::maybe_caused_overflow(pc);
if(reinterpret_cast<std::atomic<unsigned char>*>(pg)[n].
compare_exchange_strong(expected,1)){
//super::destroy_element(p);
//pg->reset(n);
retire_element(static_cast<std::size_t>(p-this->arrays.elements()),mco);
if(reinterpret_cast<std::atomic<unsigned char>*>(pc)->exchange(1)!=1){
retire_element(
static_cast<std::size_t>(p-this->arrays.elements()),mco);
res=1;
}
}
@ -1941,7 +1939,6 @@ private:
{
static constexpr std::size_t N=128;
static constexpr std::size_t min_for_epoch_bump=64;
static constexpr std::size_t min_for_garbage_collection=64;
using ssize_t=std::make_signed<std::size_t>::type;