Method newArrayBuffer

valdi/src/valdi/quickjs/QuickJSJavaScriptContext.cpp:535–561

}

Valdi::JSValueRef QuickJSJavaScriptContext::newArrayBuffer(const Valdi::BytesView& buffer,
                                                           Valdi::JSExceptionTracker& exceptionTracker) {
    auto guard = _threadAccessChecker.guard();
    if (buffer.empty()) {
        return toRetainedJSValueRef(JS_DupValue(_context, _emptyArrayBuffer));
    } else {
        JSFreeArrayBufferDataFunc* freeFunction;
        auto* byteBuffer = dynamic_cast<Valdi::ByteBuffer*>(buffer.getSource().get());

        // For byte buffers that we are transferring to JS, we notify the JS engine about the memory
        // usage from them, to increase the likely of a future GC pass.
        if (byteBuffer != nullptr && byteBuffer->retainCount() == 1) {
            freeFunction = &freeByteBuffer;
            JS_IncreaseExternallyAllocatedMemory(_runtime, byteBuffer->capacity());
        } else {
            freeFunction = &freeArrayBuffer;
        }

        return checkCallAndGetValue(exceptionTracker,
                                    JS_NewArrayBuffer(_context,
                                                      const_cast<Valdi::Byte*>(buffer.data()),
                                                      buffer.size(),
                                                      freeFunction,
                                                      Valdi::unsafeBridgeRetain(buffer.getSource().get()),
                                                      0));
    }
}

Valdi::JSValueRef QuickJSJavaScriptContext::newTypedArrayFromArrayBuffer(const Valdi::TypedArrayType& type,
                                                                         const Valdi::JSValue& arrayBuffer,