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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// Copyright (c) 2013 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_CHROMIUM_SPDY_BUFFER_PRODUCER_H_
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#define NET_SPDY_CHROMIUM_SPDY_BUFFER_PRODUCER_H_
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#include <memory>
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#include "base/compiler_specific.h"
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#include "base/macros.h"
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#include "net/base/net_export.h"
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namespace net {
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class SpdyBuffer;
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// An object which provides a SpdyBuffer for writing. We pass these
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// around instead of SpdyBuffers since some buffers have to be
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// generated "just in time".
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class NET_EXPORT_PRIVATE SpdyBufferProducer {
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public:
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SpdyBufferProducer();
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// Produces the buffer to be written. Will be called at most once.
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virtual std::unique_ptr<SpdyBuffer> ProduceBuffer() = 0;
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virtual ~SpdyBufferProducer();
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// Returns the estimate of dynamically allocated memory in bytes.
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virtual size_t EstimateMemoryUsage() const = 0;
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private:
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DISALLOW_COPY_AND_ASSIGN(SpdyBufferProducer);
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};
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// A simple wrapper around a single SpdyBuffer.
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class NET_EXPORT_PRIVATE SimpleBufferProducer : public SpdyBufferProducer {
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public:
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explicit SimpleBufferProducer(std::unique_ptr<SpdyBuffer> buffer);
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~SimpleBufferProducer() override;
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std::unique_ptr<SpdyBuffer> ProduceBuffer() override;
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size_t EstimateMemoryUsage() const override;
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private:
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std::unique_ptr<SpdyBuffer> buffer_;
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DISALLOW_COPY_AND_ASSIGN(SimpleBufferProducer);
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};
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} // namespace net
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#endif // NET_SPDY_CHROMIUM_SPDY_BUFFER_PRODUCER_H_
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