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  1. #include <cstdlib>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <thread>
  5. #include <future>
  6.  
  7. int main()
  8. {
  9.     std::vector<int> v(1ul<<27);
  10.  
  11.     auto f(begin(v)), m(f+v.size()/2), l(end(v));
  12.     std::generate(f, l, rand);
  13.  
  14. #if 0
  15.     auto t1 = std::thread([&] () mutable { std::sort(f,m); } );
  16.     auto t2 = std::thread([&] () mutable { std::sort(m,l); } );
  17.     t1.join();
  18.     t2.join();
  19. #else
  20.     auto f1 = std::async(std::launch::async, [&] () mutable { std::sort(f,m); } );
  21.     auto f2 = std::async(std::launch::async, [&] () mutable { std::sort(m,l); } );
  22.     f1.get();
  23.     f2.get();
  24. #endif
  25.  
  26.     std::inplace_merge(f,m,l);
  27. }
  28.  
Runtime error #stdin #stdout 3.68s 527360KB
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Standard input is empty
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Standard output is empty
https://ideone.com/dcNhPI
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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