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re-strengthened atomic ops, halved gc frequency again

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joaquintides
2024-01-03 20:50:17 +01:00
parent 07370c16e6
commit 78aaa8ea51
1 changed files with 6 additions and 5 deletions
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11
include/boost/unordered/detail/foa/concurrent_table.hpp
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@ -204,7 +204,7 @@ private:
template<typename Integral> template<typename Integral>
struct atomic_integral struct atomic_integral
{ {
#if 0&&defined(BOOST_UNORDERED_LATCH_FREE) #if defined(BOOST_UNORDERED_LATCH_FREE)
operator Integral()const{return n.load(std::memory_order_acquire);} operator Integral()const{return n.load(std::memory_order_acquire);}
void operator=(Integral m){n.store(m,std::memory_order_release);} void operator=(Integral m){n.store(m,std::memory_order_release);}
void operator|=(Integral m){n.fetch_or(m);} void operator|=(Integral m){n.fetch_or(m);}
@ -571,7 +571,8 @@ public:
} }
std::cout std::cout
<<"version: 2024/01/03 17:45; " <<"version: 2024/01/03 20:50; "
<<"lf: "<<(double)size()/capacity()<<"; "
<<"capacity: "<<capacity()<<"; " <<"capacity: "<<capacity()<<"; "
<<"rehashes: "<<rehashes<<"; " <<"rehashes: "<<rehashes<<"; "
<<"max probe:" <<max_probe<<"\n"; <<"max probe:" <<max_probe<<"\n";
@ -1308,8 +1309,8 @@ private:
#if defined(BOOST_UNORDERED_LATCH_FREE) #if defined(BOOST_UNORDERED_LATCH_FREE)
static bool is_occupied(group_type* pg,std::size_t pos) static bool is_occupied(group_type* pg,std::size_t pos)
{ {
//return reinterpret_cast<std::atomic<unsigned char>*>(pg)[pos]>1; return reinterpret_cast<std::atomic<unsigned char>*>(pg)[pos]>1;
return true; //return true;
} }
#else #else
static bool is_occupied(group_type* pg,std::size_t pos) static bool is_occupied(group_type* pg,std::size_t pos)
@ -2005,7 +2006,7 @@ private:
struct garbage_vector struct garbage_vector
{ {
static constexpr std::size_t N=256; static constexpr std::size_t N=256;
static constexpr std::size_t min_for_epoch_bump=32; static constexpr std::size_t min_for_epoch_bump=64;
using ssize_t=std::make_signed<std::size_t>::type; using ssize_t=std::make_signed<std::size_t>::type;