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  1. #include <chrono>
  2. #include <condition_variable>
  3. #include <iostream>
  4. #include <memory>
  5. #include <mutex>
  6. #include <stdexcept>
  7. #include <thread>
  8.  
  9.  
  10. struct Blocker
  11. {
  12.     Blocker() :
  13.         wait_thread([this]() {
  14.             std::mutex mtx;
  15.             std::unique_lock<std::mutex> lck(mtx);            
  16.             cond.wait(lck);
  17.         })
  18.     {
  19.     }
  20.  
  21.     void wait()
  22.     {
  23.         wait_thread.join();
  24.     }
  25.  
  26.     void notify()
  27.     {
  28.         cond.notify_one();
  29.     }
  30.  
  31.     std::condition_variable cond;    
  32.     std::thread wait_thread;
  33. };
  34.  
  35.  
  36. template<typename Callback>
  37. void async_operation(const Callback & cb) { cb(); }
  38.  
  39.  
  40. int main()
  41. {
  42.     Blocker b;
  43.     async_operation([&](){ b.notify(); });
  44.     b.wait();
  45.  
  46.     std::cout << "End of program." << std::endl;
  47. }
Time limit exceeded #stdin #stdout 5s 11216KB
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https://ideone.com/yRu24U
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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