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  1. #include <iostream>
  2. #include <memory>
  3. using namespace std;
  4.  
  5. //////////////////////////////////////////////////////////////
  6. struct Abstract
  7. {
  8. 	virtual void Release() = 0;
  9.  
  10. 	virtual void DoSomething() = 0;
  11. };
  12.  
  13. extern "C" Abstract* NewAbstract();
  14.  
  15. //////////////////////////////////////////////////////////////
  16. class AbstractImpl : public Abstract
  17. {
  18. public:
  19. 	AbstractImpl();
  20.  
  21. 	~AbstractImpl();
  22.  
  23. 	void Release();
  24.  
  25. 	void DoSomething();
  26. };
  27.  
  28. Abstract* NewAbstract()
  29. {
  30. 	cout << __PRETTY_FUNCTION__ << endl;
  31. 	return new (nothrow) AbstractImpl();
  32. }
  33.  
  34. AbstractImpl::AbstractImpl()
  35. {
  36. 	cout << __PRETTY_FUNCTION__ << endl;
  37. }
  38.  
  39. AbstractImpl::~AbstractImpl()
  40. {
  41. 	cout << __PRETTY_FUNCTION__ << endl;
  42. }
  43.  
  44. void AbstractImpl::Release()
  45. {
  46. 	cout << __PRETTY_FUNCTION__ << endl;
  47. 	delete this;
  48. }
  49.  
  50. void AbstractImpl::DoSomething()
  51. {
  52. 	cout << __PRETTY_FUNCTION__ << endl;
  53. }
  54.  
  55. //////////////////////////////////////////////////////////////
  56. int main()
  57. {
  58. 	auto p = NewAbstract();
  59.  
  60. 	if (!p)
  61. 	{
  62. 		return -1;
  63. 	}
  64.  
  65. 	shared_ptr<Abstract> sp(p, mem_fn(&Abstract::Release));
  66.  
  67. 	sp->DoSomething();
  68.  
  69. 	return 0;
  70. }
Success #stdin #stdout 0s 3472KB
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Abstract* NewAbstract()
AbstractImpl::AbstractImpl()
virtual void AbstractImpl::DoSomething()
virtual void AbstractImpl::Release()
AbstractImpl::~AbstractImpl()
https://ideone.com/hHyGzP
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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