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v8 12.4.254 (node 22.4.1)
V8 is Google's open source JavaScript engine
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v8 12.4.254 (node 22.4.1)
V8 is Google's open source JavaScript engine
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#include <v8-array-buffer.h>
Data Structures | |
| class | Allocator |
Static Public Member Functions | |
| static Local< ArrayBuffer > | New (Isolate *isolate, size_t byte_length) |
| static Local< ArrayBuffer > | New (Isolate *isolate, std::shared_ptr< BackingStore > backing_store) |
| static std::unique_ptr< BackingStore > | NewBackingStore (Isolate *isolate, size_t byte_length) |
| static std::unique_ptr< BackingStore > | NewBackingStore (void *data, size_t byte_length, v8::BackingStore::DeleterCallback deleter, void *deleter_data) |
| static std::unique_ptr< BackingStore > | NewResizableBackingStore (size_t byte_length, size_t max_byte_length) |
| static V8_INLINE ArrayBuffer * | Cast (Value *value) |
 Static Public Member Functions inherited from Object | |
| static V8_INLINE int | InternalFieldCount (const PersistentBase< Object > &object) |
| static V8_INLINE int | InternalFieldCount (const BasicTracedReference< Object > &object) |
| static V8_INLINE void * | GetAlignedPointerFromInternalField (const PersistentBase< Object > &object, int index) |
| static V8_INLINE void * | GetAlignedPointerFromInternalField (const BasicTracedReference< Object > &object, int index) |
| static V8_INLINE MaybeLocal< Context > | GetCreationContext (const PersistentBase< Object > &object) |
| static V8_INLINE Isolate * | GetIsolate (const TracedReference< Object > &handle) |
| static Local< Object > | New (Isolate *isolate) |
| static Local< Object > | New (Isolate *isolate, Local< Value > prototype_or_null, Local< Name > *names, Local< Value > *values, size_t length) |
| static V8_INLINE Object * | Cast (Value *obj) |
| Static Public Member Functions inherited from Value | |
| template<class T > | |
| static V8_INLINE Value * | Cast (T *value) |
Static Public Attributes | |
| static const int | kInternalFieldCount = V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT |
| static const int | kEmbedderFieldCount = V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT |
An instance of the built-in ArrayBuffer constructor (ES6 draft 15.13.5).
Definition at line 131 of file v8-array-buffer.h.
| size_t ByteLength | ( | ) | const |
Data length in bytes.
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inlinestatic |
Definition at line 333 of file v8-array-buffer.h.
| void * Data | ( | ) | const |
More efficient shortcut for GetBackingStore()->Data(). The returned pointer is valid as long as the ArrayBuffer is alive.
| V8_WARN_UNUSED_RESULT Maybe< bool > Detach | ( | v8::Local< v8::Value > | key | ) |
Detaches this ArrayBuffer and all its views (typed arrays). Detaching sets the byte length of the buffer and all typed arrays to zero, preventing JavaScript from ever accessing underlying backing store. ArrayBuffer should have been externalized and must be detachable. Returns Nothing if the key didn't pass the [[ArrayBufferDetachKey]] check, Just(true) otherwise.
| std::shared_ptr< BackingStore > GetBackingStore | ( | ) |
Get a shared pointer to the backing store of this array buffer. This pointer coordinates the lifetime management of the internal storage with any live ArrayBuffers on the heap, even across isolates. The embedder should not attempt to manage lifetime of the storage through other means.
The returned shared pointer will not be empty, even if the ArrayBuffer has been detached. Use |WasDetached| to tell if it has been detached instead.
| bool IsDetachable | ( | ) | const |
Returns true if this ArrayBuffer may be detached.
| bool IsResizableByUserJavaScript | ( | ) | const |
More efficient shortcut for GetBackingStore()->IsResizableByUserJavaScript().
| size_t MaxByteLength | ( | ) | const |
Maximum length in bytes.
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static |
Create a new ArrayBuffer. Allocate |byte_length| bytes. Allocated memory will be owned by a created ArrayBuffer and will be deallocated when it is garbage-collected, unless the object is externalized.
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Create a new ArrayBuffer with an existing backing store. The created array keeps a reference to the backing store until the array is garbage collected. Note that the IsExternal bit does not affect this reference from the array to the backing store.
In future IsExternal bit will be removed. Until then the bit is set as follows. If the backing store does not own the underlying buffer, then the array is created in externalized state. Otherwise, the array is created in internalized state. In the latter case the array can be transitioned to the externalized state using Externalize(backing_store).
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Returns a new standalone BackingStore that is allocated using the array buffer allocator of the isolate. The result can be later passed to ArrayBuffer::New.
If the allocator returns nullptr, then the function may cause GCs in the given isolate and re-try the allocation. If GCs do not help, then the function will crash with an out-of-memory error.
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Returns a new standalone BackingStore that takes over the ownership of the given buffer. The destructor of the BackingStore invokes the given deleter callback.
The result can be later passed to ArrayBuffer::New. The raw pointer to the buffer must not be passed again to any V8 API function.
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Returns a new resizable standalone BackingStore that is allocated using the array buffer allocator of the isolate. The result can be later passed to ArrayBuffer::New.
|byte_length| must be <= |max_byte_length|.
This function is usable without an isolate. Unlike |NewBackingStore| calls with an isolate, GCs cannot be triggered, and there are no retries. Allocation failure will cause the function to crash with an out-of-memory error.
| V8_DEPRECATE_SOON | ( | "Use the version which takes a key parameter (passing a null handle is " "ok)." | ) |
Detaches this ArrayBuffer and all its views (typed arrays). Detaching sets the byte length of the buffer and all typed arrays to zero, preventing JavaScript from ever accessing underlying backing store. ArrayBuffer should have been externalized and must be detachable.
| bool WasDetached | ( | ) | const |
Returns true if this ArrayBuffer has been detached.
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Definition at line 341 of file v8-array-buffer.h.
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Definition at line 340 of file v8-array-buffer.h.
1.9.7