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    std::enable_shared_from_this::shared_from_this

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    C++
     
    Utilities-Bibliothek
     
    Dynamische Speicherverwaltung
    Low-Level-Speicherverwaltung
    Zuweiser
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    Allocators
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    allocator
    allocator_traits(C++11)
    allocator_arg_t(C++11)
    allocator_arg(C++11)
    uses_allocator(C++11)
    scoped_allocator_adaptor(C++11)
    Initialisierter Speicher
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    Uninitialized storage
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    uninitialized_copy
    uninitialized_copy_n(C++11)
    uninitialized_fill
    uninitialized_fill_n
    raw_storage_iterator
    get_temporary_buffer
    return_temporary_buffer
    Intelligente Zeiger
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    Smart pointers
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    unique_ptr(C++11)
    shared_ptr(C++11)
    weak_ptr(C++11)
    auto_ptr(veraltet)
    owner_less(C++11)
    enable_shared_from_this(C++11)
    bad_weak_ptr(C++11)
    default_delete(C++11)
    Garbage Collection Unterstützung
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    Garbage collection support
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    declare_reachable(C++11)
    undeclare_reachable(C++11)
    declare_no_pointers(C++11)
    undeclare_no_pointers(C++11)
    pointer_safety(C++11)
    get_pointer_safety(C++11)
    Verschiedenes
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    Miscellaneous
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    pointer_traits(C++11)
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    align(C++11)
    C-Bibliothek
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    C Library
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    std::enable_shared_from_this
    Geschützt Member-Funktionen
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    Protected member functions
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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=
    Öffentliche Member-Funktionen
    Original:
    Public member functions
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    enable_shared_from_this::shared_from_this
     
    <tbody> </tbody>
    shared_ptr<T> shared_from_this();
    		 (1)
    shared_ptr<T const> shared_from_this() const;
    		 (2)
    Gibt eine std::shared_ptr<T>, dass Aktien das Eigentum an *this mit allen vorhandenen std::shared_ptr<T>, die beziehen sich auf *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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    Notes

    Vor dem Aufruf shared_from_this, sollte es mindestens sein std::shared_ptr<T> p die *this besitzt .
    Original:
    Before calling shared_from_this, there should be at least one std::shared_ptr<T> p that owns *this.
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    Rückgabewert

    std::shared_ptr<T>, dass Aktien das Eigentum an *this mit bereits bestehenden 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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    Beispiel

    #include <iostream>
#include <memory>

struct Foo : public std::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

    Siehe auch

    (C++11)
    		 intelligenter Zeiger, der geteilten Objektbesitz abbildet
    (Klassen-Template) [edit]