| /* |
| * |
| * 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_SLICE_H |
| #define GRPCXX_SUPPORT_SLICE_H |
| |
| #include <grpc++/support/config.h> |
| #include <grpc/support/slice.h> |
| |
| namespace grpc { |
| |
| /// A wrapper around \a gpr_slice. |
| /// |
| /// A slice represents a contiguous reference counted array of bytes. |
| /// It is cheap to take references to a slice, and it is cheap to create a |
| /// slice pointing to a subset of another slice. |
| class Slice final { |
| public: |
| /// Construct an empty slice. |
| Slice(); |
| // Destructor - drops one reference. |
| ~Slice(); |
| |
| enum AddRef { ADD_REF }; |
| /// Construct a slice from \a slice, adding a reference. |
| Slice(gpr_slice slice, AddRef); |
| |
| enum StealRef { STEAL_REF }; |
| /// Construct a slice from \a slice, stealing a reference. |
| Slice(gpr_slice slice, StealRef); |
| |
| /// Copy constructor, adds a reference. |
| Slice(const Slice& other); |
| |
| /// Assignment, reference count is unchanged. |
| Slice& operator=(Slice other) { |
| std::swap(slice_, other.slice_); |
| return *this; |
| } |
| |
| /// Byte size. |
| size_t size() const { return GPR_SLICE_LENGTH(slice_); } |
| |
| /// Raw pointer to the beginning (first element) of the slice. |
| const uint8_t* begin() const { return GPR_SLICE_START_PTR(slice_); } |
| |
| /// Raw pointer to the end (one byte \em past the last element) of the slice. |
| const uint8_t* end() const { return GPR_SLICE_END_PTR(slice_); } |
| |
| /// Raw C slice. Caller needs to call gpr_slice_unref when done. |
| gpr_slice c_slice() const { return gpr_slice_ref(slice_); } |
| |
| private: |
| friend class ByteBuffer; |
| |
| gpr_slice slice_; |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_SUPPORT_SLICE_H |