std::enable_shared_from_this::shared_from_this

 

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std::enable_shared_from_this

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enable_shared_from_this::enable_shared_from_this

enable_shared_from_this::~enable_shared_from_this

enable_shared_from_this::operator=

Funzioni membro pubbliche Original: Public member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

enable_shared_from_this::shared_from_this

 

shared_ptr<T> shared_from_this();	(1)
shared_ptr<T const> shared_from_this()const;	(2)

Restituisce un std::shared_ptr<T> che la proprietà di parti *this con tutto std::shared_ptr<T> esistenti che fanno riferimento a *this.

Original:

Returns a std::shared_ptr<T> that shares ownership of *this with all existing std::shared_ptr<T> that refer to *this.

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Note

Prima di chiamare shared_from_this, ci dovrebbe essere almeno un std::shared_ptr<T>p che possiede *this.

Original:

Before calling shared_from_this, there should be at least one std::shared_ptr<T>p that owns *this.

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Valore di ritorno

std::shared_ptr<T> che la proprietà di parti *this con pre-esistenti std::shared_ptr<T>s

Original:

std::shared_ptr<T> that shares ownership of *this with pre-existing std::shared_ptr<T>s

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Esempio

#include <iostream>#include <memory>   struct Foo :publicstd::enable_shared_from_this<Foo>{ Foo(){std::cout<<"Foo::Foo\n";} ~Foo(){std::cout<<"Foo::~Foo\n";}std::shared_ptr<Foo> getFoo(){return shared_from_this();}};   int main(){ Foo *f = new Foo;std::shared_ptr<Foo> pf1;   {std::shared_ptr<Foo> pf2(f); pf1 = pf2->getFoo();// shares ownership of object with pf2}   std::cout<<"pf2 is gone\n";}

Output:

Foo::Foo pf2 is gone Foo::~Foo

Vedi anche

shared_ptr (C++11)	smart pointer with shared object ownership semantics (classe template)