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streamlined update_size_ctrl, printed concurrent_table stats

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This commit is contained in:
joaquintides
2024-01-02 10:42:01 +01:00
parent 0aab436707
commit d576363d09
1 changed files with 15 additions and 5 deletions
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20
include/boost/unordered/detail/foa/concurrent_table.hpp
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@ -53,6 +53,7 @@
#if defined(BOOST_UNORDERED_LATCH_FREE)
#include <algorithm>
#include <vector>
#include <iostream>
#endif
std::atomic<std::size_t> garbage_collected=0;
@ -568,6 +569,11 @@ public:
retired_element_traits::deallocate(
ral,v.retired_elements,garbage_vector::N);
}
std::cout
<<"capacity: "<<capacity()<<"; "
<<"rehashes: "<<rehashes<<"; "
<<"max probe:" <<max_probe<<"\n";
}
#else
~concurrent_table()=default;
@ -1724,8 +1730,9 @@ private:
#if defined(BOOST_UNORDERED_LATCH_FREE)
auto lck=exclusive_access();
update_size_ctrl();
garbage_collect();
if(this->size_ctrl.size>=this->size_ctrl.ml){ // NB >=
garbage_collect();
++rehashes;
this->unchecked_rehash_for_growth();
max_probe=default_max_probe;
}
@ -2011,6 +2018,7 @@ private:
epoch_type current_epoch=1;
unsigned char pad_[cacheline_size-sizeof(epoch_type)];
std::size_t max_probe=default_max_probe;
std::size_t rehashes=0;
garbage_vector& local_garbage_vector()const
{
@ -2062,13 +2070,15 @@ private:
{
using ssize_t=std::make_signed<std::size_t>::type;
ssize_t ssize=0,smcos=0;
for(std::size_t i=0;i<garbage_vectors.size();++i){
auto &v=garbage_vectors[i];
this->size_ctrl.size+=v.size.exchange(0);
auto mcos=v.mcos.exchange(0);
if(ssize_t(this->size_ctrl.ml)>=mcos)this->size_ctrl.ml-=mcos;
else this->size_ctrl.ml=0;
ssize+=v.size.exchange(0);
smcos+=v.mcos.exchange(0);
}
this->size_ctrl.size+=ssize;
if(ssize_t(this->size_ctrl.ml)>=smcos)this->size_ctrl.ml-=smcos;
else this->size_ctrl.ml=0;
auto max_ml=super::initial_max_load();
if(this->size_ctrl.ml>max_ml)this->size_ctrl.ml=max_ml;
}