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v8
9.0.257(node16.0.0)
V8 is Google's open source JavaScript engine
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v8
9.0.257(node16.0.0)
V8 is Google's open source JavaScript engine
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#include <v8.h>
Public Member Functions | |
| V8_INLINE | Persistent () |
| template<class S > | |
| V8_INLINE | Persistent (Isolate *isolate, Local< S > that) |
| template<class S , class M2 > | |
| V8_INLINE | Persistent (Isolate *isolate, const Persistent< S, M2 > &that) |
| V8_INLINE | Persistent (const Persistent &that) |
| template<class S , class M2 > | |
| V8_INLINE | Persistent (const Persistent< S, M2 > &that) |
| V8_INLINE Persistent & | operator= (const Persistent &that) |
| template<class S , class M2 > | |
| V8_INLINE Persistent & | operator= (const Persistent< S, M2 > &that) |
| V8_INLINE | ~Persistent () |
| template<class S > | |
| V8_INLINE Persistent< S > & | As () const |
| template<class S , class M2 > | |
| void | Copy (const Persistent< S, M2 > &that) |
Static Public Member Functions | |
| template<class S > | |
| static V8_INLINE Persistent< T > & | Cast (const Persistent< S > &that) |
Friends | |
| class | Isolate |
| class | Utils |
| template<class F > | |
| class | Local |
| template<class F1 , class F2 > | |
| class | Persistent |
| template<class F > | |
| class | ReturnValue |
A PersistentBase which allows copy and assignment.
Copy, assignment and destructor behavior is controlled by the traits class M.
Note: Persistent class hierarchy is subject to future changes.
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A Persistent with no storage cell.
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Construct a Persistent from a Local. When the Local is non-empty, a new storage cell is created pointing to the same object, and no flags are set.
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Construct a Persistent from a Persistent. When the Persistent is non-empty, a new storage cell is created pointing to the same object, and no flags are set.
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The copy constructors and assignment operator create a Persistent exactly as the Persistent constructor, but the Copy function from the traits class is called, allowing the setting of flags based on the copied Persistent.
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The destructor will dispose the Persistent based on the kResetInDestructor flags in the traits class. Since not calling dispose can result in a memory leak, it is recommended to always set this flag.
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inlinestatic |
| void Copy | ( | const Persistent< S, M2 > & | that | ) |
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Persistent is a way to create a strong pointer from an off-heap object to another on-heap object. As long as the Persistent handle is alive the GC will keep the object pointed to alive. The Persistent handle is always a GC root from the point of view of the GC. Persistent must be constructed and destructed in the same thread.
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1.8.17