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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/cronet/native/generated/cronet.idl_impl_interface.h"
#include "base/no_destructor.h"
#include "base/numerics/safe_conversions.h"
namespace {
// Implementation of Cronet_BufferCallback that calls free() to malloc() buffer.
class Cronet_BufferCallbackFree : public Cronet_BufferCallback {
public:
Cronet_BufferCallbackFree() = default;
Cronet_BufferCallbackFree(const Cronet_BufferCallbackFree&) = delete;
Cronet_BufferCallbackFree& operator=(const Cronet_BufferCallbackFree&) =
delete;
~Cronet_BufferCallbackFree() override = default;
void OnDestroy(Cronet_BufferPtr buffer) override { free(buffer->GetData()); }
};
// Concrete implementation of abstract Cronet_Buffer interface.
class Cronet_BufferImpl : public Cronet_Buffer {
public:
Cronet_BufferImpl() = default;
Cronet_BufferImpl(const Cronet_BufferImpl&) = delete;
Cronet_BufferImpl& operator=(const Cronet_BufferImpl&) = delete;
~Cronet_BufferImpl() override;
// Cronet_Buffer implementation
void InitWithDataAndCallback(Cronet_RawDataPtr data,
uint64_t size,
Cronet_BufferCallbackPtr callback) override;
void InitWithAlloc(uint64_t size) override;
uint64_t GetSize() override;
Cronet_RawDataPtr GetData() override;
private:
Cronet_RawDataPtr data_ = nullptr;
uint64_t size_ = 0;
Cronet_BufferCallbackPtr callback_ = nullptr;
};
Cronet_BufferImpl::~Cronet_BufferImpl() {
if (callback_)
callback_->OnDestroy(this);
}
void Cronet_BufferImpl::InitWithDataAndCallback(
Cronet_RawDataPtr data,
uint64_t size,
Cronet_BufferCallbackPtr callback) {
data_ = data;
size_ = size;
callback_ = callback;
}
void Cronet_BufferImpl::InitWithAlloc(uint64_t size) {
if (!base::IsValueInRangeForNumericType<size_t, uint64_t>(size))
return;
data_ = malloc(size);
if (!data_)
return;
size_ = size;
static base::NoDestructor<Cronet_BufferCallbackFree> static_callback;
callback_ = static_callback.get();
}
uint64_t Cronet_BufferImpl::GetSize() {
return size_;
}
Cronet_RawDataPtr Cronet_BufferImpl::GetData() {
return data_;
}
} // namespace
CRONET_EXPORT Cronet_BufferPtr Cronet_Buffer_Create() {
return new Cronet_BufferImpl();
}
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