As you probably know, over the course of the last several months, V8
switched to an in-house implementations of ArrayBuffer, typed arrays and
DataView. These implementations feature faster allocation, better garbage
collection performance and a potential to become even faster in the future
with deep compiler optimizations - they are the finest available.
Before these happy times however, V8 made do with a
v8::Object::SetIndexedPropertiesToExternalArrayData and a bunch of
associated APIs (also Get, Has and Length versions of the same), and
implementations of ArrayBuffer, typed arrays and other similar classes were
provided by an embedder. However, embedder-provided typed arrays are behind
us, and internal implementation of typed arrays and associated classes will
be moving away from the mechanism underlying SetIndexedPropertiesTo* API.
Supporting both in the long run is a burden on the code base (recall that
SetIndexedPropertiesTo* API allows turning _any_ JS object into a kind of
typed array).
Therefore, over a course of the next few months, I plan to deprecate and
remove the following APIs:
void v8::Object::SetIndexedPropertiesToPixelData(uint8_t* data, int
length);
bool v8::Object::HasIndexedPropertiesInPixelData();
uint8_t* v8::Object::GetIndexedPropertiesPixelData();
int v8::Object::GetIndexedPropertiesPixelDataLength();
void v8::Object::SetIndexedPropertiesToExternalArrayData(void* data,
ExternalArrayType array_type,
int number_of_elements);
bool v8::Object::HasIndexedPropertiesInExternalArrayData();
void* v8::Object::GetIndexedPropertiesExternalArrayData();
ExternalArrayType v8::Object::GetIndexedPropertiesExternalArrayDataType();
int v8::Object::GetIndexedPropertiesExternalArrayDataLength();
If you have objections, and know a use case which is not adequately served
by V8's implementation of typed arrays &c, the time to yell is now.
Cheers,
Dmitry
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