std::declare_reachable

 

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关系运算符 Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

双和元组 Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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掉期，远期和移动 Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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分配器 Original: Allocators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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未初始化的存储空间 Original: Uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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智能指针 Original: Smart pointers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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垃圾收集的支持 Original: Garbage collection support The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
declare_reachable （C++11）
undeclare_reachable （C++11）
declare_no_pointers （C++11）
undeclare_no_pointers （C++11）
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malloc calloc	realloc free

 

Defined in header <memory>
void declare_reachable( void* p )		（C++11 起）

声明引用的对象的指针p可达。到达的对象不会被删除由垃圾收集器，或认为是泄漏检漏仪即使所有的指针被破坏。一个对象可能被宣布可达多次，在这种情况下，多次调用std::undeclare_reachable将需要删除此属性。例如，XOR链表需要声明其可达的结点，如果执行垃圾收集启用.

Original:

Declares the object referenced by the pointer p reachable. Reachable objects will not be deleted by the garbage collector or considered to be a leak by a leak detector even if all pointers to it are destroyed. An object may be declared reachable multiple times, in which case multiple calls to std::undeclare_reachable would be needed to remove this property. For example, a XOR链表 needs to declare its nodes reachable if the implementation has garbage collection enabled.

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参数

p

-

一个安全的派生的指针或一个空指针 Original: a safely-derived pointer or a null pointer The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

返回值

（无）

Original:

(none)

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例外

可能会引发std::bad_alloc如果系统无法分配所需的内存跟踪到达的对象.

Original:

May throw std::bad_alloc if the system cannot allocate memory required to track reachable objects.

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另请参阅

undeclare_reachable （C++11）	宣布，一个对象可以回收利用 Original: declares that an object can be recycled The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）