
Before this CL, - `//DEPS` allows including `base/` headers - `//base/DEPS` allows including `partition_alloc` headers, while banning `base/allocator/partition_alloc`. This forced us to use - `#include "partition_alloc/*"` in `//base` - `#include "base/allocator/partition_alloc/src/partition_alloc/*"` elsewhere and the rule was inconsistent. This CL applies the DEP include rule in `//base` chrome-wide so that we can only use `#include "partition_alloc/*"` style includes. At the same time, all `#include` with the old style are rewritten. This need to be done in the single CL to avoid DEP rule check errors. Bug: 40276913 Change-Id: I1410888184df71ec3bd6374d58d876740357272c Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5745369 Commit-Queue: Mikihito Matsuura <mikt@google.com> Reviewed-by: Rick Byers <rbyers@chromium.org> Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org> Owners-Override: Rick Byers <rbyers@chromium.org> Cr-Commit-Position: refs/heads/main@{#1334435}
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
// Copyright 2013 The Chromium Authors
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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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#ifdef UNSAFE_BUFFERS_BUILD
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// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
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#pragma allow_unsafe_buffers
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#endif
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#ifndef GIN_ARRAY_BUFFER_H_
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#define GIN_ARRAY_BUFFER_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "base/compiler_specific.h"
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#include "base/memory/shared_memory_mapper.h"
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#include "gin/converter.h"
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#include "gin/gin_export.h"
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#include "partition_alloc/partition_alloc.h"
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#include "v8/include/v8-array-buffer.h"
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#include "v8/include/v8-forward.h"
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namespace gin {
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class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
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public:
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void* Allocate(size_t length) override;
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void* AllocateUninitialized(size_t length) override;
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void Free(void* data, size_t length) override;
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GIN_EXPORT static ArrayBufferAllocator* SharedInstance();
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private:
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friend class V8Initializer;
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template <partition_alloc::AllocFlags flags>
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void* AllocateInternal(size_t length);
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// Initialize the PartitionAlloc partition from which instances of this class
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// allocate memory. This is called after initializing V8 since, when enabled,
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// the V8 sandbox must be initialized first.
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static void InitializePartition();
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// The PartitionAlloc partition that instances of this class allocate memory
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// chunks from. When the V8 sandbox is enabled, this partition must be placed
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// inside of it. For that, PA's ConfigurablePool is created inside the V8
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// sandbox during initialization of V8, and this partition is then placed
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// inside the configurable pool during InitializePartition().
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static partition_alloc::PartitionRoot* partition_;
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};
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class GIN_EXPORT ArrayBuffer {
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public:
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ArrayBuffer();
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ArrayBuffer(v8::Isolate* isolate, v8::Local<v8::ArrayBuffer> buffer);
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ArrayBuffer(const ArrayBuffer&) = delete;
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~ArrayBuffer();
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ArrayBuffer& operator=(const ArrayBuffer& other);
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void* bytes() const {
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return backing_store_ ? backing_store_->Data() : nullptr;
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}
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size_t num_bytes() const {
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return backing_store_ ? backing_store_->ByteLength() : 0;
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}
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private:
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std::shared_ptr<v8::BackingStore> backing_store_;
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};
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template<>
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struct GIN_EXPORT Converter<ArrayBuffer> {
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static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
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ArrayBuffer* out);
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};
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class GIN_EXPORT ArrayBufferView {
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public:
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ArrayBufferView();
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ArrayBufferView(v8::Isolate* isolate, v8::Local<v8::ArrayBufferView> view);
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ArrayBufferView(const ArrayBufferView&) = delete;
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~ArrayBufferView();
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ArrayBufferView& operator=(const ArrayBufferView& other);
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void* bytes() const {
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return static_cast<uint8_t*>(array_buffer_.bytes()) + offset_;
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}
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size_t num_bytes() const { return num_bytes_; }
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private:
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ArrayBuffer array_buffer_;
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size_t offset_;
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size_t num_bytes_;
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};
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template<>
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struct GIN_EXPORT Converter<ArrayBufferView> {
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static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
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ArrayBufferView* out);
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};
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GIN_EXPORT base::SharedMemoryMapper* GetSharedMemoryMapperForArrayBuffers();
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} // namespace gin
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#endif // GIN_ARRAY_BUFFER_H_
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