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55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_SPDY_PLATFORM_API_SPDY_MEM_SLICE_H_
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#define NET_SPDY_PLATFORM_API_SPDY_MEM_SLICE_H_
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#include <utility>
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#include "net/spdy/platform/api/spdy_export.h"
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#include "net/spdy/platform/impl/spdy_mem_slice_impl.h"
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namespace net {
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// SpdyMemSlice is an internally reference counted data buffer used as the
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// source buffers for write operations. SpdyMemSlice implicitly maintains a
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// reference count and will free the underlying data buffer when the reference
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// count reaches zero.
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class SPDY_EXPORT_PRIVATE SpdyMemSlice {
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public:
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// Constructs an empty SpdyMemSlice with no underlying data and 0 reference
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// count.
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SpdyMemSlice() = default;
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// Constructs a SpdyMemSlice with reference count 1 to a newly allocated data
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// buffer of |length| bytes.
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explicit SpdyMemSlice(size_t length) : impl_(length) {}
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// Constructs a SpdyMemSlice from |impl|. It takes the reference away from
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// |impl|.
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explicit SpdyMemSlice(SpdyMemSliceImpl impl) : impl_(std::move(impl)) {}
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SpdyMemSlice(const SpdyMemSlice& other) = delete;
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SpdyMemSlice& operator=(const SpdyMemSlice& other) = delete;
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// Move constructors. |other| will not hold a reference to the data buffer
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// after this call completes.
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SpdyMemSlice(SpdyMemSlice&& other) = default;
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SpdyMemSlice& operator=(SpdyMemSlice&& other) = default;
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~SpdyMemSlice() = default;
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// Returns a char pointer to underlying data buffer.
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const char* data() const { return impl_.data(); }
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// Returns the length of underlying data buffer.
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size_t length() const { return impl_.length(); }
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private:
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SpdyMemSliceImpl impl_;
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};
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} // namespace net
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#endif // NET_SPDY_PLATFORM_API_SPDY_MEM_SLICE_H_
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