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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/api.h" | 5 #include "src/api.h" |
6 | 6 |
7 #include <string.h> // For memcpy, strlen. | 7 #include <string.h> // For memcpy, strlen. |
8 #ifdef V8_USE_ADDRESS_SANITIZER | 8 #ifdef V8_USE_ADDRESS_SANITIZER |
9 #include <sanitizer/asan_interface.h> | 9 #include <sanitizer/asan_interface.h> |
10 #endif // V8_USE_ADDRESS_SANITIZER | 10 #endif // V8_USE_ADDRESS_SANITIZER |
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6426 DCHECK(data_view->buffer()->IsJSArrayBuffer()); | 6426 DCHECK(data_view->buffer()->IsJSArrayBuffer()); |
6427 buffer = i::handle(i::JSArrayBuffer::cast(data_view->buffer())); | 6427 buffer = i::handle(i::JSArrayBuffer::cast(data_view->buffer())); |
6428 } else { | 6428 } else { |
6429 DCHECK(obj->IsJSTypedArray()); | 6429 DCHECK(obj->IsJSTypedArray()); |
6430 buffer = i::JSTypedArray::cast(*obj)->GetBuffer(); | 6430 buffer = i::JSTypedArray::cast(*obj)->GetBuffer(); |
6431 } | 6431 } |
6432 return Utils::ToLocal(buffer); | 6432 return Utils::ToLocal(buffer); |
6433 } | 6433 } |
6434 | 6434 |
6435 | 6435 |
| 6436 size_t v8::ArrayBufferView::CopyContents(void* dest, size_t byte_length) { |
| 6437 i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this); |
| 6438 i::Isolate* isolate = obj->GetIsolate(); |
| 6439 size_t byte_offset = i::NumberToSize(isolate, obj->byte_offset()); |
| 6440 size_t bytes_to_copy = |
| 6441 i::Min(byte_length, i::NumberToSize(isolate, obj->byte_length())); |
| 6442 if (bytes_to_copy) { |
| 6443 i::DisallowHeapAllocation no_gc; |
| 6444 const char* source = nullptr; |
| 6445 if (obj->IsJSDataView()) { |
| 6446 i::Handle<i::JSDataView> data_view(i::JSDataView::cast(*obj)); |
| 6447 i::Handle<i::JSArrayBuffer> buffer( |
| 6448 i::JSArrayBuffer::cast(data_view->buffer())); |
| 6449 source = reinterpret_cast<char*>(buffer->backing_store()); |
| 6450 } else { |
| 6451 DCHECK(obj->IsJSTypedArray()); |
| 6452 i::Handle<i::JSTypedArray> typed_array(i::JSTypedArray::cast(*obj)); |
| 6453 if (typed_array->buffer()->IsSmi()) { |
| 6454 i::Handle<i::FixedTypedArrayBase> fixed_array( |
| 6455 i::FixedTypedArrayBase::cast(typed_array->elements())); |
| 6456 source = reinterpret_cast<char*>(fixed_array->DataPtr()); |
| 6457 } else { |
| 6458 i::Handle<i::JSArrayBuffer> buffer( |
| 6459 i::JSArrayBuffer::cast(typed_array->buffer())); |
| 6460 source = reinterpret_cast<char*>(buffer->backing_store()); |
| 6461 } |
| 6462 } |
| 6463 memcpy(dest, source + byte_offset, bytes_to_copy); |
| 6464 } |
| 6465 return bytes_to_copy; |
| 6466 } |
| 6467 |
| 6468 |
6436 size_t v8::ArrayBufferView::ByteOffset() { | 6469 size_t v8::ArrayBufferView::ByteOffset() { |
6437 i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this); | 6470 i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this); |
6438 return static_cast<size_t>(obj->byte_offset()->Number()); | 6471 return static_cast<size_t>(obj->byte_offset()->Number()); |
6439 } | 6472 } |
6440 | 6473 |
6441 | 6474 |
6442 size_t v8::ArrayBufferView::ByteLength() { | 6475 size_t v8::ArrayBufferView::ByteLength() { |
6443 i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this); | 6476 i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this); |
6444 return static_cast<size_t>(obj->byte_length()->Number()); | 6477 return static_cast<size_t>(obj->byte_length()->Number()); |
6445 } | 6478 } |
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8062 Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate()); | 8095 Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate()); |
8063 Address callback_address = | 8096 Address callback_address = |
8064 reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback)); | 8097 reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback)); |
8065 VMState<EXTERNAL> state(isolate); | 8098 VMState<EXTERNAL> state(isolate); |
8066 ExternalCallbackScope call_scope(isolate, callback_address); | 8099 ExternalCallbackScope call_scope(isolate, callback_address); |
8067 callback(info); | 8100 callback(info); |
8068 } | 8101 } |
8069 | 8102 |
8070 | 8103 |
8071 } } // namespace v8::internal | 8104 } } // namespace v8::internal |
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