1 // Copyright 2013 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_SPDY_SPDY_BUFFER_PRODUCER_H_ 6 #define NET_SPDY_SPDY_BUFFER_PRODUCER_H_ 7 8 #include <memory> 9 10 #include "base/compiler_specific.h" 11 #include "net/base/net_export.h" 12 13 namespace net { 14 15 class SpdyBuffer; 16 17 // An object which provides a SpdyBuffer for writing. We pass these 18 // around instead of SpdyBuffers since some buffers have to be 19 // generated "just in time". 20 class NET_EXPORT_PRIVATE SpdyBufferProducer { 21 public: 22 SpdyBufferProducer(); 23 24 // Produces the buffer to be written. Will be called at most once. 25 virtual std::unique_ptr<SpdyBuffer> ProduceBuffer() = 0; 26 27 SpdyBufferProducer(const SpdyBufferProducer&) = delete; 28 SpdyBufferProducer& operator=(const SpdyBufferProducer&) = delete; 29 30 virtual ~SpdyBufferProducer(); 31 }; 32 33 // A simple wrapper around a single SpdyBuffer. 34 class NET_EXPORT_PRIVATE SimpleBufferProducer : public SpdyBufferProducer { 35 public: 36 explicit SimpleBufferProducer(std::unique_ptr<SpdyBuffer> buffer); 37 38 SimpleBufferProducer(const SimpleBufferProducer&) = delete; 39 SimpleBufferProducer& operator=(const SimpleBufferProducer&) = delete; 40 41 ~SimpleBufferProducer() override; 42 43 std::unique_ptr<SpdyBuffer> ProduceBuffer() override; 44 45 private: 46 std::unique_ptr<SpdyBuffer> buffer_; 47 }; 48 49 } // namespace net 50 51 #endif // NET_SPDY_SPDY_BUFFER_PRODUCER_H_ 52