00001 /* 00002 * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By 00003 * downloading, copying, installing or using the software you agree to 00004 * this license. If you do not agree to this license, do not download, 00005 * install, copy or use the software. 00006 * 00007 * Intel Open Source License 00008 * 00009 * Copyright (c) 2004 Intel Corporation. All rights reserved. 00010 * 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are 00013 * met: 00014 * 00015 * Redistributions of source code must retain the above copyright 00016 * notice, this list of conditions and the following disclaimer. 00017 * 00018 * Redistributions in binary form must reproduce the above copyright 00019 * notice, this list of conditions and the following disclaimer in the 00020 * documentation and/or other materials provided with the distribution. 00021 * 00022 * Neither the name of the Intel Corporation nor the names of its 00023 * contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR 00030 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 */ 00038 #ifndef _OASYS_STREAM_BUFFER_H_ 00039 #define _OASYS_STREAM_BUFFER_H_ 00040 00041 #include <stdlib.h> 00042 00043 namespace oasys { 00044 00055 class StreamBuffer { 00056 public: 00060 StreamBuffer(size_t size = DEFAULT_BUFSIZE); 00061 ~StreamBuffer(); 00062 00067 void set_size(size_t size); 00068 00071 char* data() { return &buf_[0]; } 00072 00074 char* start(); 00075 00077 char* end(); 00078 00080 void reserve(size_t amount); 00081 00083 void fill(size_t amount); 00084 00086 void consume(size_t amount); 00087 00089 void clear(); 00090 00092 size_t size() { return size_; } 00093 00095 size_t fullbytes(); 00096 00098 size_t tailbytes(); 00099 00100 private: 00102 void realloc(size_t size); 00103 00107 void moveup(); 00108 00109 size_t start_; 00110 size_t end_; 00111 size_t size_; 00112 00113 char* buf_; 00114 00115 static const size_t DEFAULT_BUFSIZE = 512; 00116 }; 00117 00118 } // namespace oasys 00119 00120 #endif //_OASYS_STREAM_BUFFER_H_