mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 05:41:12 +00:00
98e40ec294
We generate ByteBuf by rust bindgen, so we can drop StyleVecU8. One potential follow-up is that we can merge this together with WrVecU8. Differential Revision: https://phabricator.services.mozilla.com/D60328 --HG-- rename : ipc/glue/ByteBuf.h => ipc/glue/ByteBufUtils.h extra : moz-landing-system : lando
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* A type that can be sent without needing to make a copy during
|
|
* serialization. In addition the receiver can take ownership of the
|
|
* data to avoid having to make an additional copy. */
|
|
|
|
#ifndef mozilla_ipc_ByteBuf_h
|
|
#define mozilla_ipc_ByteBuf_h
|
|
|
|
#include "mozilla/Assertions.h"
|
|
|
|
namespace IPC {
|
|
template <typename T>
|
|
struct ParamTraits;
|
|
}
|
|
|
|
namespace mozilla {
|
|
|
|
namespace ipc {
|
|
|
|
class ByteBuf final {
|
|
friend struct IPC::ParamTraits<mozilla::ipc::ByteBuf>;
|
|
|
|
public:
|
|
bool Allocate(size_t aLength) {
|
|
MOZ_ASSERT(mData == nullptr);
|
|
mData = (uint8_t*)malloc(aLength);
|
|
if (!mData) {
|
|
return false;
|
|
}
|
|
mLen = aLength;
|
|
mCapacity = aLength;
|
|
return true;
|
|
}
|
|
|
|
ByteBuf() : mData(nullptr), mLen(0), mCapacity(0) {}
|
|
|
|
ByteBuf(uint8_t* aData, size_t aLen, size_t aCapacity)
|
|
: mData(aData), mLen(aLen), mCapacity(aCapacity) {}
|
|
|
|
ByteBuf(const ByteBuf& aFrom) = delete;
|
|
|
|
ByteBuf(ByteBuf&& aFrom)
|
|
: mData(aFrom.mData), mLen(aFrom.mLen), mCapacity(aFrom.mCapacity) {
|
|
aFrom.mData = nullptr;
|
|
aFrom.mLen = 0;
|
|
aFrom.mCapacity = 0;
|
|
}
|
|
|
|
ByteBuf& operator=(ByteBuf&& aFrom) {
|
|
std::swap(mData, aFrom.mData);
|
|
std::swap(mLen, aFrom.mLen);
|
|
std::swap(mCapacity, aFrom.mCapacity);
|
|
return *this;
|
|
}
|
|
|
|
~ByteBuf() { free(mData); }
|
|
|
|
uint8_t* mData;
|
|
size_t mLen;
|
|
size_t mCapacity;
|
|
};
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|
|
|
|
#endif // ifndef mozilla_ipc_ByteBuf_h
|