ceb2fb3131
Change-Id: I4dce9352b296c2beefd8097ca57f10adf266afcc Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2914955 Reviewed-by: Ilya Sherman <isherman@chromium.org> Reviewed-by: Takashi Sakamoto <tasak@google.com> Reviewed-by: danakj <danakj@chromium.org> Reviewed-by: Kentaro Hara <haraken@chromium.org> Reviewed-by: Matthew Denton <mpdenton@chromium.org> Reviewed-by: Jeremy Roman <jbroman@chromium.org> Auto-Submit: Bartek Nowierski <bartekn@chromium.org> Commit-Queue: Bartek Nowierski <bartekn@chromium.org> Cr-Commit-Position: refs/heads/master@{#886734}
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "gin/array_buffer.h"
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#include <stddef.h>
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#include <stdlib.h>
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#include "base/allocator/partition_allocator/page_allocator.h"
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#include "base/check_op.h"
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#include "build/build_config.h"
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#include "gin/per_isolate_data.h"
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#if defined(OS_POSIX)
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#include <sys/mman.h>
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#ifndef MAP_ANONYMOUS
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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#endif // defined(OS_POSIX)
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namespace gin {
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static_assert(V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT == 2,
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"array buffers must have two internal fields");
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// ArrayBufferAllocator -------------------------------------------------------
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void* ArrayBufferAllocator::Allocate(size_t length) {
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// TODO(bbudge) Use partition allocator for malloc/calloc allocations.
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return calloc(1, length);
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}
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void* ArrayBufferAllocator::AllocateUninitialized(size_t length) {
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return malloc(length);
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}
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void ArrayBufferAllocator::Free(void* data, size_t length) {
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free(data);
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}
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ArrayBufferAllocator* ArrayBufferAllocator::SharedInstance() {
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static ArrayBufferAllocator* instance = new ArrayBufferAllocator();
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return instance;
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}
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// ArrayBuffer ----------------------------------------------------------------
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ArrayBuffer::ArrayBuffer() = default;
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ArrayBuffer::ArrayBuffer(v8::Isolate* isolate, v8::Local<v8::ArrayBuffer> array)
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: backing_store_(array->GetBackingStore()) {}
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ArrayBuffer::~ArrayBuffer() = default;
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ArrayBuffer& ArrayBuffer::operator=(const ArrayBuffer& other) = default;
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// Converter<ArrayBuffer> -----------------------------------------------------
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bool Converter<ArrayBuffer>::FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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ArrayBuffer* out) {
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if (!val->IsArrayBuffer())
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return false;
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*out = ArrayBuffer(isolate, v8::Local<v8::ArrayBuffer>::Cast(val));
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return true;
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}
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// ArrayBufferView ------------------------------------------------------------
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ArrayBufferView::ArrayBufferView()
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: offset_(0),
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num_bytes_(0) {
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}
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ArrayBufferView::ArrayBufferView(v8::Isolate* isolate,
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v8::Local<v8::ArrayBufferView> view)
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: array_buffer_(isolate, view->Buffer()),
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offset_(view->ByteOffset()),
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num_bytes_(view->ByteLength()) {
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}
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ArrayBufferView::~ArrayBufferView() = default;
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ArrayBufferView& ArrayBufferView::operator=(const ArrayBufferView& other) =
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default;
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// Converter<ArrayBufferView> -------------------------------------------------
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bool Converter<ArrayBufferView>::FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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ArrayBufferView* out) {
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if (!val->IsArrayBufferView())
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return false;
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*out = ArrayBufferView(isolate, v8::Local<v8::ArrayBufferView>::Cast(val));
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return true;
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}
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} // namespace gin
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