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// Copyright 2021 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "fxjs/cfx_v8_array_buffer_allocator.h"
#include "core/fxcrt/fx_memory.h"
CFX_V8ArrayBufferAllocator::CFX_V8ArrayBufferAllocator() = default;
CFX_V8ArrayBufferAllocator::~CFX_V8ArrayBufferAllocator() = default;
// NOTE: Under V8 sandbox mode, defer NewDefaultAllocator() call until
// first use, since V8 must be initialized first for it to succeed, but
// we need the allocator in order to initialize V8.
void* CFX_V8ArrayBufferAllocator::Allocate(size_t length) {
if (length > kMaxAllowedBytes)
return nullptr;
#ifdef V8_ENABLE_SANDBOX
if (!wrapped_) {
wrapped_.reset(v8::ArrayBuffer::Allocator::NewDefaultAllocator());
}
return wrapped_->Allocate(length);
#else // V8_ENABLE_SANDBOX
return FX_ArrayBufferAllocate(length);
#endif // V8_ENABLE_SANDBOX
}
void* CFX_V8ArrayBufferAllocator::AllocateUninitialized(size_t length) {
if (length > kMaxAllowedBytes)
return nullptr;
#ifdef V8_ENABLE_SANDBOX
if (!wrapped_) {
wrapped_.reset(v8::ArrayBuffer::Allocator::NewDefaultAllocator());
}
return wrapped_->AllocateUninitialized(length);
#else // V8_ENABLE_SANDBOX
return FX_ArrayBufferAllocateUninitialized(length);
#endif
}
void CFX_V8ArrayBufferAllocator::Free(void* data, size_t length) {
#ifdef V8_ENABLE_SANDBOX
if (wrapped_) {
wrapped_->Free(data, length);
}
#else // V8_ENABLE_SANDBOX
FX_ArrayBufferFree(data);
#endif
}