| // Copyright 2018 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/script/mozjs-45/mozjs_array_buffer.h" |
| |
| #include "cobalt/base/polymorphic_downcast.h" |
| |
| namespace cobalt { |
| namespace script { |
| |
| // TODO: These can be merged into common code (using SbMemoryAllocate |
| // directly) once AllocationMetadata is removed. |
| PreallocatedArrayBufferData::PreallocatedArrayBufferData(size_t byte_length) { |
| data_ = js_malloc(byte_length); |
| byte_length_ = byte_length; |
| } |
| |
| PreallocatedArrayBufferData::~PreallocatedArrayBufferData() { |
| if (data_) { |
| js_free(data_); |
| data_ = nullptr; |
| byte_length_ = 0; |
| } |
| } |
| |
| // static |
| Handle<ArrayBuffer> ArrayBuffer::New(GlobalEnvironment* global_environment, |
| size_t byte_length) { |
| auto* mozjs_global_environment = |
| base::polymorphic_downcast<mozjs::MozjsGlobalEnvironment*>( |
| global_environment); |
| JSContext* context = mozjs_global_environment->context(); |
| JS::RootedObject global_object(context, |
| mozjs_global_environment->global_object()); |
| JSAutoRequest auto_request(context); |
| JSAutoCompartment auto_compartment(context, global_object); |
| JS::RootedValue array_buffer(context); |
| array_buffer.setObjectOrNull(JS_NewArrayBuffer(context, byte_length)); |
| DCHECK(array_buffer.isObject()); |
| return Handle<ArrayBuffer>( |
| new mozjs::MozjsUserObjectHolder<mozjs::MozjsArrayBuffer>(context, |
| array_buffer)); |
| } |
| |
| // static |
| Handle<ArrayBuffer> ArrayBuffer::New(GlobalEnvironment* global_environment, |
| PreallocatedArrayBufferData* data) { |
| auto* mozjs_global_environment = |
| base::polymorphic_downcast<mozjs::MozjsGlobalEnvironment*>( |
| global_environment); |
| JSContext* context = mozjs_global_environment->context(); |
| JS::RootedObject global_object(context, |
| mozjs_global_environment->global_object()); |
| JSAutoRequest auto_request(context); |
| JSAutoCompartment auto_compartment(context, global_object); |
| |
| JS::RootedValue array_buffer(context); |
| array_buffer.setObjectOrNull(JS_NewArrayBufferWithContents( |
| context, data->byte_length(), data->data())); |
| DCHECK(array_buffer.isObject()); |
| data->Release(); |
| return Handle<ArrayBuffer>( |
| new mozjs::MozjsUserObjectHolder<mozjs::MozjsArrayBuffer>(context, |
| array_buffer)); |
| } |
| |
| } // namespace script |
| } // namespace cobalt |