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  1. #include<bits/stdc++.h>
  2. #include<mutex>
  3. #include<thread>
  4. using namespace std;
  5. mutex m;
  6. condition_variable cv;
  7. int fll=0;
  8. int empty=0;
  9. // using namespace std;
  10. void producer(int i){
  11. 	unique_lock<mutex>lock(m);
  12. 	while(empty==0){
  13. 		cv.wait(lock);
  14. 	}
  15. 	cout<<"producer "<<i<<" has produced"<<'\n';
  16. 	empty--;
  17. 	fll++;
  18. 	cv.notify_all();
  19.  
  20. }
  21. void consumer(int i){
  22. 	unique_lock<mutex>lock(m);
  23. 	while(fll==0){
  24. 		cv.wait(lock);
  25. 	}
  26. 	cout<<"consumer "<<i<<" has consumed"<<'\n';
  27. 	empty++;
  28. 	fll--;
  29. 	cv.notify_all();
  30. }
  31. int main(){
  32. 	fll=0;
  33. 	empty=5;
  34. 	thread t1(consumer,1);
  35. 	thread t2(consumer,2);
  36. 	thread t3(consumer,3);
  37. 	thread t4(consumer,4);
  38. 	thread t5(consumer,5);
  39. 	thread t6(consumer,6);
  40. 	thread t7(consumer,7);
  41. 	thread t8(producer,1);
  42. 	thread t9(producer,2);
  43. 	thread t10(producer,3);
  44. 	thread t11(producer,4);
  45. 	thread t12(producer,5);
  46. 	thread t13(producer,6);
  47. 	thread t14(producer,7);
  48. 	// thread t15(producer,8);
  49. 	thread t16(producer,9);
  50. 	t1.join();
  51. 	t2.join();
  52. 	t3.join();
  53. 	t4.join();
  54. 	t5.join();
  55. 	t6.join();
  56. 	t7.join();
  57. 	t8.join();
  58. 	t9.join();
  59. 	t10.join();
  60. 	t11.join();
  61. 	t12.join();
  62. 	t13.join();
  63. 	t14.join();
  64. 	// t15.join();
  65. 	t16.join();
  66. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
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Standard input is empty
stdout
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producer 1 has produced
consumer 7 has consumed
producer 2 has produced
producer 3 has produced
producer 4 has produced
producer 5 has produced
producer 6 has produced
consumer 6 has consumed
producer 7 has produced
consumer 5 has consumed
producer 9 has produced
consumer 4 has consumed
consumer 3 has consumed
consumer 2 has consumed
consumer 1 has consumed
https://ideone.com/v7VXDw
language:
C++ (gcc 8.3)
created:
43 days ago
visibility:
public

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