1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 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 "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/memory/scoped_ptr.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 scoped_ptr<SpdyBuffer> ProduceBuffer() = 0; 26 27 virtual ~SpdyBufferProducer(); 28 29 private: 30 DISALLOW_COPY_AND_ASSIGN(SpdyBufferProducer); 31 }; 32 33 // A simple wrapper around a single SpdyBuffer. 34 class NET_EXPORT_PRIVATE SimpleBufferProducer : public SpdyBufferProducer { 35 public: 36 explicit SimpleBufferProducer(scoped_ptr<SpdyBuffer> buffer); 37 38 virtual ~SimpleBufferProducer(); 39 40 virtual scoped_ptr<SpdyBuffer> ProduceBuffer() OVERRIDE; 41 42 private: 43 scoped_ptr<SpdyBuffer> buffer_; 44 45 DISALLOW_COPY_AND_ASSIGN(SimpleBufferProducer); 46 }; 47 48 } // namespace net 49 50 #endif // NET_SPDY_SPDY_BUFFER_PRODUCER_H_ 51