| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPCXX_SUPPORT_BYTE_BUFFER_H |
| #define GRPCXX_SUPPORT_BYTE_BUFFER_H |
| |
| #include <grpc/grpc.h> |
| #include <grpc/byte_buffer.h> |
| #include <grpc/support/log.h> |
| #include <grpc++/impl/serialization_traits.h> |
| #include <grpc++/support/config.h> |
| #include <grpc++/support/slice.h> |
| #include <grpc++/support/status.h> |
| |
| #include <vector> |
| |
| namespace grpc { |
| |
| /// A sequence of bytes. |
| class ByteBuffer GRPC_FINAL { |
| public: |
| /// Constuct an empty buffer. |
| ByteBuffer() : buffer_(nullptr) {} |
| |
| /// Construct buffer from \a slices, of which there are \a nslices. |
| ByteBuffer(const Slice* slices, size_t nslices); |
| |
| ~ByteBuffer(); |
| |
| /// Dump (read) the buffer contents into \a slices. |
| void Dump(std::vector<Slice>* slices) const; |
| |
| /// Remove all data. |
| void Clear(); |
| |
| /// Buffer size in bytes. |
| size_t Length() const; |
| |
| private: |
| friend class SerializationTraits<ByteBuffer, void>; |
| |
| ByteBuffer(const ByteBuffer&); |
| ByteBuffer& operator=(const ByteBuffer&); |
| |
| // takes ownership |
| void set_buffer(grpc_byte_buffer* buf) { |
| if (buffer_) { |
| Clear(); |
| } |
| buffer_ = buf; |
| } |
| |
| // For \a SerializationTraits's usage. |
| grpc_byte_buffer* buffer() const { return buffer_; } |
| |
| grpc_byte_buffer* buffer_; |
| }; |
| |
| template <> |
| class SerializationTraits<ByteBuffer, void> { |
| public: |
| static Status Deserialize(grpc_byte_buffer* byte_buffer, ByteBuffer* dest, |
| int max_message_size) { |
| dest->set_buffer(byte_buffer); |
| return Status::OK; |
| } |
| static Status Serialize(const ByteBuffer& source, grpc_byte_buffer** buffer, |
| bool* own_buffer) { |
| *buffer = source.buffer(); |
| *own_buffer = false; |
| return Status::OK; |
| } |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_SUPPORT_BYTE_BUFFER_H |