Use32BitEventSeq.h
Go to the documentation of this file.00001 /******************************************************************************* 00002 * 00003 * Copyright (c) 2009-2010 Philipp Werner <philipp.werner@st.ovgu.de> 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 00010 * * Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * 00013 * * Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in 00015 * the documentation and/or other materials provided with the 00016 * distribution. 00017 * 00018 * * Neither the name of the copyright holders nor the names of 00019 * contributors may be used to endorse or promote products derived 00020 * from this software without specific prior written permission. 00021 * 00022 * 00023 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00024 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00025 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00026 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00027 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00028 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00029 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00030 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00031 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00032 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00033 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00034 * 00035 * 00036 * $Id$ 00037 * 00038 ******************************************************************************/ 00039 00040 00041 #ifndef __USE32BITEVENTSEQ_H_06F00D78E8653E__ 00042 #define __USE32BITEVENTSEQ_H_06F00D78E8653E__ 00043 00044 00045 #include "util/endianness.h" 00046 00047 00048 namespace famouso { 00049 namespace mw { 00050 namespace afp { 00051 namespace frag { 00052 00053 00062 template <class AFPC> 00063 class Use32BitEventSeq { 00064 00066 static uint32_t & seq_clock() { 00067 static uint32_t s = 0; 00068 return s; 00069 } 00070 00072 uint32_t seq; 00073 00074 public: 00075 00077 Use32BitEventSeq() { 00078 // Get sequence number from seq clock and update it 00079 seq = seq_clock()++; 00080 } 00081 00083 enum { header_length = 5 }; 00084 00090 void get_header(uint8_t * data, bool more_headers) { 00091 if (more_headers) 00092 data[0] = 0x40; 00093 else 00094 data[0] = 0x00; 00095 00096 *reinterpret_cast<uint32_t *>(data + 1) = htonl(seq); 00097 } 00098 }; 00099 00100 00101 } // namespace frag 00102 } // namespace afp 00103 } // namespace mw 00104 } // namespace famouso 00105 00106 00107 #endif // __USE32BITEVENTSEQ_H_06F00D78E8653E__ 00108