mirror of
https://github.com/OPM/ResInsight.git
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211 lines
9.7 KiB
C++
211 lines
9.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2018- Equinor ASA
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "VdeCachingHashedIdFactory.h"
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#define FARMHASH_NO_BUILTIN_EXPECT
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#define NAMESPACE_FOR_HASH_FUNCTIONS farmhash
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#include "farmhash/farmhash.h"
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#ifdef _MSC_VER
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#pragma warning( push )
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#pragma warning( disable : 4267 4307 4319 4244 4456 )
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#endif
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#include "farmhash/farmhash.cc"
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#ifdef _MSC_VER
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#pragma warning( pop )
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#endif
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//==================================================================================================
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//
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//
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//
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//==================================================================================================
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class Checksum
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{
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public:
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static unsigned int crc( const void* data, size_t numBytes );
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};
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//==================================================================================================
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//
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//
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//
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//==================================================================================================
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool VdeCachingHashedIdFactory::Key::operator<( const Key& other ) const
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{
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if ( hashVal != other.hashVal )
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{
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return hashVal < other.hashVal;
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}
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else if ( role != other.role )
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{
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return role < other.role;
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}
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else if ( elementType != other.elementType )
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{
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return elementType < other.elementType;
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}
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else
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{
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return elementCount < other.elementCount;
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}
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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VdeCachingHashedIdFactory::VdeCachingHashedIdFactory()
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: m_lastUsedId( -1 )
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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int VdeCachingHashedIdFactory::getOrCreateIdForFloatArr( ArrayRole arrayRole, const void* floatArr, size_t elementCount )
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{
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return getOrCreateIdForArrOfType( arrayRole, Float32, sizeof( float ), floatArr, elementCount );
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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int VdeCachingHashedIdFactory::getOrCreateIdForUint32Arr( ArrayRole arrayRole, const unsigned int* uint32Arr, size_t elementCount )
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{
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return getOrCreateIdForArrOfType( arrayRole, Uint32, sizeof( unsigned int ), uint32Arr, elementCount );
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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int VdeCachingHashedIdFactory::getOrCreateIdForUint8Arr( ArrayRole arrayRole, const unsigned char* uint8Arr, size_t elementCount )
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{
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return getOrCreateIdForArrOfType( arrayRole, Uint8, sizeof( unsigned char ), uint8Arr, elementCount );
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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int VdeCachingHashedIdFactory::lastAssignedId() const
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{
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return m_lastUsedId;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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int VdeCachingHashedIdFactory::getOrCreateIdForArrOfType( ArrayRole arrayRole,
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ElementType elementType,
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size_t elementSizeInBytes,
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const void* data,
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size_t elementCount )
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{
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Key key;
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key.elementType = elementType;
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key.role = arrayRole;
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key.elementCount = elementCount;
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const size_t arraySizeInBytes = elementCount * elementSizeInBytes;
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// key.hashVal = Checksum::crc(data, arraySizeInBytes);
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// key.hashVal = farmhash::Hash32(static_cast<const char*>(data), arraySizeInBytes);
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// key.hashVal = farmhash::Hash64(static_cast<const char*>(data), arraySizeInBytes);
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// key.hashVal = farmhash::Hash128to64(farmhash::Hash128(static_cast<const char*>(data), arraySizeInBytes));
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key.hashVal = farmhash::Hash128( static_cast<const char*>( data ), arraySizeInBytes );
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std::map<Key, int>::iterator it = m_keyToIdMap.find( key );
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if ( it != m_keyToIdMap.end() )
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{
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return it->second;
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}
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const int newId = ++m_lastUsedId;
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m_keyToIdMap[key] = newId;
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return newId;
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// const int newId = ++m_lastUsedId;
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// return newId;
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}
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//==================================================================================================
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//
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// CRC Stuff
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//
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//==================================================================================================
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static const unsigned int crc_table[256] =
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{ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e,
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0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb,
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0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8,
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0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
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0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
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0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb,
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0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
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0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074,
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0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
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0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e,
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0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27,
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0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0,
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0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
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0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
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0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92,
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0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4,
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0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
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0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d,
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0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a,
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0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37,
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0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d };
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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unsigned int Checksum::crc( const void* data, size_t numBytes )
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{
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unsigned int sum = 0xffffffff;
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const unsigned char* p = reinterpret_cast<const unsigned char*>( data );
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// Compute crc
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{
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unsigned int tbl_idx;
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while ( numBytes-- )
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{
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tbl_idx = ( sum ^ *p ) & 0xff;
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sum = ( crc_table[tbl_idx] ^ ( sum >> 8 ) ) & 0xffffffff;
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p++;
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}
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sum = sum & 0xffffffff;
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}
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return sum ^ 0xffffffff;
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}
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