mirror of
https://github.com/triqs/dft_tools
synced 2024-12-27 06:43:40 +01:00
32 lines
685 B
C++
32 lines
685 B
C++
#include <vector>
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#include <map>
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#include <boost/pool/pool_alloc.hpp>
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#include <ctime>
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#include <iostream>
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struct A {
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double x; int i;
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};
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typedef std::map< double, A, std::less<double>, boost::fast_pool_allocator< std::pair<const double, A >>> m_t;
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template<typename M> void test(M & m) {
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std::clock_t start = std::clock() ;
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for( int i = 0 ; i<100000 ; ++i ) {m.insert(std::make_pair( 10000*std::cos(i),A{0.5,i}));}
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std::cout << ( std::clock() - start ) / double(CLOCKS_PER_SEC) << " secs.\n" ;
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}
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int main()
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{
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m_t m;
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test(m);
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std::map<double,A> m2;
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test(m2);
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boost::singleton_pool<boost::pool_allocator_tag, sizeof(std::pair<const double, A>)>::release_memory();
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}
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