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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/runtime/runtime-utils.h" | 5 #include "src/runtime/runtime-utils.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/factory.h" | 8 #include "src/factory.h" |
9 #include "src/messages.h" | 9 #include "src/messages.h" |
10 #include "src/objects-inl.h" | 10 #include "src/objects-inl.h" |
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113 CHECK(byte_length % element_size == 0); | 113 CHECK(byte_length % element_size == 0); |
114 size_t length = byte_length / element_size; | 114 size_t length = byte_length / element_size; |
115 | 115 |
116 if (length > static_cast<unsigned>(Smi::kMaxValue)) { | 116 if (length > static_cast<unsigned>(Smi::kMaxValue)) { |
117 THROW_NEW_ERROR_RETURN_FAILURE( | 117 THROW_NEW_ERROR_RETURN_FAILURE( |
118 isolate, NewRangeError(MessageTemplate::kInvalidTypedArrayLength)); | 118 isolate, NewRangeError(MessageTemplate::kInvalidTypedArrayLength)); |
119 } | 119 } |
120 | 120 |
121 // All checks are done, now we can modify objects. | 121 // All checks are done, now we can modify objects. |
122 | 122 |
123 DCHECK_EQ(v8::ArrayBufferView::kInternalFieldCount, | 123 DCHECK_EQ(v8::ArrayBufferView::kEmbedderFieldCount, |
124 holder->GetInternalFieldCount()); | 124 holder->GetEmbedderFieldCount()); |
125 for (int i = 0; i < v8::ArrayBufferView::kInternalFieldCount; i++) { | 125 for (int i = 0; i < v8::ArrayBufferView::kEmbedderFieldCount; i++) { |
126 holder->SetInternalField(i, Smi::kZero); | 126 holder->SetEmbedderField(i, Smi::kZero); |
127 } | 127 } |
128 Handle<Object> length_obj = isolate->factory()->NewNumberFromSize(length); | 128 Handle<Object> length_obj = isolate->factory()->NewNumberFromSize(length); |
129 holder->set_length(*length_obj); | 129 holder->set_length(*length_obj); |
130 holder->set_byte_offset(*byte_offset_object); | 130 holder->set_byte_offset(*byte_offset_object); |
131 holder->set_byte_length(*byte_length_object); | 131 holder->set_byte_length(*byte_length_object); |
132 | 132 |
133 if (!maybe_buffer->IsNull(isolate)) { | 133 if (!maybe_buffer->IsNull(isolate)) { |
134 Handle<JSArrayBuffer> buffer = Handle<JSArrayBuffer>::cast(maybe_buffer); | 134 Handle<JSArrayBuffer> buffer = Handle<JSArrayBuffer>::cast(maybe_buffer); |
135 holder->set_buffer(*buffer); | 135 holder->set_buffer(*buffer); |
136 | 136 |
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186 CHECK(TryNumberToSize(*length_obj, &length)); | 186 CHECK(TryNumberToSize(*length_obj, &length)); |
187 } | 187 } |
188 | 188 |
189 if ((length > static_cast<unsigned>(Smi::kMaxValue)) || | 189 if ((length > static_cast<unsigned>(Smi::kMaxValue)) || |
190 (length > (kMaxInt / element_size))) { | 190 (length > (kMaxInt / element_size))) { |
191 THROW_NEW_ERROR_RETURN_FAILURE( | 191 THROW_NEW_ERROR_RETURN_FAILURE( |
192 isolate, NewRangeError(MessageTemplate::kInvalidTypedArrayLength)); | 192 isolate, NewRangeError(MessageTemplate::kInvalidTypedArrayLength)); |
193 } | 193 } |
194 size_t byte_length = length * element_size; | 194 size_t byte_length = length * element_size; |
195 | 195 |
196 DCHECK_EQ(v8::ArrayBufferView::kInternalFieldCount, | 196 DCHECK_EQ(v8::ArrayBufferView::kEmbedderFieldCount, |
197 holder->GetInternalFieldCount()); | 197 holder->GetEmbedderFieldCount()); |
198 for (int i = 0; i < v8::ArrayBufferView::kInternalFieldCount; i++) { | 198 for (int i = 0; i < v8::ArrayBufferView::kEmbedderFieldCount; i++) { |
199 holder->SetInternalField(i, Smi::kZero); | 199 holder->SetEmbedderField(i, Smi::kZero); |
200 } | 200 } |
201 | 201 |
202 // NOTE: not initializing backing store. | 202 // NOTE: not initializing backing store. |
203 // We assume that the caller of this function will initialize holder | 203 // We assume that the caller of this function will initialize holder |
204 // with the loop | 204 // with the loop |
205 // for(i = 0; i < length; i++) { holder[i] = source[i]; } | 205 // for(i = 0; i < length; i++) { holder[i] = source[i]; } |
206 // We assume that the caller of this function is always a typed array | 206 // We assume that the caller of this function is always a typed array |
207 // constructor. | 207 // constructor. |
208 // If source is a typed array, this loop will always run to completion, | 208 // If source is a typed array, this loop will always run to completion, |
209 // so we are sure that the backing store will be initialized. | 209 // so we are sure that the backing store will be initialized. |
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456 return isolate->heap()->false_value(); | 456 return isolate->heap()->false_value(); |
457 } | 457 } |
458 | 458 |
459 Handle<JSTypedArray> obj(JSTypedArray::cast(args[0])); | 459 Handle<JSTypedArray> obj(JSTypedArray::cast(args[0])); |
460 return isolate->heap()->ToBoolean(obj->GetBuffer()->is_shared() && | 460 return isolate->heap()->ToBoolean(obj->GetBuffer()->is_shared() && |
461 obj->type() == kExternalInt32Array); | 461 obj->type() == kExternalInt32Array); |
462 } | 462 } |
463 | 463 |
464 } // namespace internal | 464 } // namespace internal |
465 } // namespace v8 | 465 } // namespace v8 |
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